Tips to effectively organize car shipping
The task of auto transport is simple. But ensuring that the process of auto transportation goes on in a smooth manner is our duty. We need to take care of the certain details. Some of the basics that can help you to get successful results are as follows:
First and foremost before giving your vehicle for auto transportation, be sure that you make your vehicle ready for shipping. This just indicates that you need to clean it properly and remove all your expensive personal belongings like antennae, show pieces and other things are important. Check that the gas tank is not filled with more than one-fourth of the tank. The anti-freezing temperature of the radiator needs to be controlled properly. Look for the leakages of the petrol tank of the car.
Once you have completed the inspection of your car is completed, make a report of your inspection. The report should contain the condition of the car at present; this will help you to resolve all the disputes in case there is existence of any kind of chaos after the vehicle has been transported to the destination ports. You can easily claim for the damages with the report if they have occurred during the shipment process.
You need to have a glance at the license of the company and enquire about the coverage of insurance that they are providing on the vehicle. Before signing the car shipping contract ensure that you read the contract thoroughly, concentrate on the payment details and the quality service. We always need to remember that good things come at a price. A good analysis of the car shipping contract enables you to gain the satisfaction of the service that they are providing for your car and the insurance coverage that you would be eligible for incase of any defaults.
Be careful that you invest good amount of time in deciding the auto transport company, there are many companies that provide good services with different conditions at reasonable prices. But being alert is our duty and we need to think about our budget constraints. There have been rapid developments and sophisticated use of technology these days. We can get our vehicles transported at remote distances in overseas countries. People are resorting to international auto shipment because they are moving from one country to another. They find it difficult to transport their expensive vintage cars across the national frontiers, so they look in for the high quality service provided by the auto transport movers. There is also a need for the people to ship their cars in the remote areas. The enterprises require this service to ship their vehicles incase they are relocating their retail stores; even the showrooms require these services foe getting their cars from the manufacturers. The terms and conditions of international and the national auto transport services are different from each other. We need to provide all the documents with respect to property rights for customs control during auto transport. The growth of the auto transport companies is improving thus rendering us with effective control over our vehicles and we can be assured of good services at favorable prices.
Joseph Letzelter is the seo copywriter for auto shipping. He has written many articles like vehicle transport, car shipping, auto transport, vehicle shipping and more. For more information visit our site www.movetransport.com. Contact him at josephletzelter12@gmail.com
Toys Wholesale Welcomes the Hot Sale Period
The new year of 2010 is coming soon, so is the peak sales period of toys in Yiwu toy wholesale market. In the end of the year, the tourists in Tourism Shopping Street in Yiwu International Trade Mart bring the peak sales hot period of toys.
Toy car in Yiwu wholesale market
Remote Control Toy Helicopters Remain Hot in Sales
“The toys in hot sale in wholesale market of 2009 are usually in the theme of some popular movie and comic figures, such as the Bumblebee, the Optimus Prime in Transformers.” as a dealer of toys in Yiwu market introduced, the toys made in Yiwu account for over 30% of the market share, which are exported to more than 200 countries and territories. There is one made in Yiwu in every 4 toys all over the world. The difference between Yiwu toy manufacturers and the other ones lie in the stress on marketing concept. Yiwu has the great advantages of the huge tangible market. Yiwu toy industry is sensitive enough to the market, which is connected with the international market, which made Yiwu toy industry seize the opportunities early.
Toys are warly welcomed by kids
Onccc noticed that toy market will be one of the most emphasized industry during the Christmas, New Year’s Day, Spring Festival, etc. Toys, like some educational toys and electronic toys, are especially favored by consumers.
Source: China Commodity City: http://en.onccc.com
‘China Commodity City Website’ was established in June 2003, which is subordinated in Zhejiang China Commodities City Group Co., Ltd. It is operated by Yiwu China Commodities City Information Technology Company. It is an information platform that can release all the product information, trade leads, and service information consultation. It is also the only official website that represents Yiwu China Commodity City. By concerning about what our customers need, ‘China Commodity City Website’regards providing useful information for customers as its target, based on the Yiwu commodities market. We will strive to combine the tangible with the intangible market and become the largest B2B website of small commodities.
Snow Driving – Top Tips & Advice
If you have to drive in these conditions, then here are some top tips to help you complete your journey safely.
THE NO.1 RULE IS DO EVERYTHING SLOWLY AND GENTLY, AND ALLOW EXTRA TIME FOR YOUR JOURNEY!
The best advice we can offer is to avoid driving in snow, sleet and ice, as it will always be treacherous! Even if you remain confident and in control of your vehicle, not everyone else will. Never drive in blizzard conditions, avoid long or remote journeys, and preferable drive in daylight for better temperatures and visibility. At least wait for the snowploughs and gritters to do their jobs, and heed the advice from authorities such as the AA or other motoring organisations before setting off!
PREPARATION -
Practice makes perfect when driving, so ideally you will have taken a course on driving is adverse weather conditions as offered by a professional Instructor or motoring organisation, before the situation even arises. If not, you can sign up with a local driving Instructor for a lesson on coping in snowy conditions. It can even be useful to practice the techniques mentioned in this article on freshly fallen snow in a large, empty car park, out of shopping hours. ‘Winterise’ your car before setting out in the cold. The usual winter car service still applies, but you can also prepare as follows, keeping a few extra items in your boot:
Check you have a full tank of fuel Good snow-ice scraper
Correct tyre pressure for the conditions Extra windshield washing fluid in the car
Use headlights, making sure both front and tail lights are clear of snow Topped up mobile phone & car charger Shovel & salt/grit if possible Hat, gloves, coat and boots/wellingtons Torch Functioning radio
First aid kit Jump leads
Warning triangle Old sack/rug (to use under wheels if stuck)
Water repellent spray Tow rope
For longer or more remote journeys it would also be wise to take some food and water as a precaution, along with a sleeping bag/blankets, flask of tea/coffee, extra clothing and boots.
Take a few minutes to prepare the car itself. Clear snow and ice from the roof and all windows of the car. A pile of snow on your roof can slide onto your windscreen and obscure you view, or launch a missile attack on to passing drivers! It is illegal to drive without full, all round vision, and the peep hole style windscreen only looks right on a tank! Use your air conditioner to help demist the inside of your windows, and use a cloth with elbow grease to clear smears on the inside of the glass. The low winter sun can be difficult enough without dirty windows. Sunglasses at the ready are also a good idea. Warm the key if you find your door lock has frozen, because breathing on the lock can cause more problems from frozen condensation. The AA currently recommends that tyres should have at least 3mm of tread for winter motoring, and certainly not less than 2mm. They also say that you should not reduce your tyre pressure to obtain more grip on snow as it doesn’t work, and can reduce the cars stability. Wear comfortable, dry shoes for driving and keep the snow-covered wellies in the boot. It is always wise to tell family or friends where you are going, and what time you should be back! On longer or more remote journeys always let someone know your intended route, and expected time of arrival. Tune into local radio for traffic and weather updates.
TOP TIPS –
A good winter driver, who stands more chance of completing a snowy journey safely, will look ahead and anticipate problems. You will need to watch the road so as not to react abruptly – aim to be controlled, gentle and slow!
SLOW DOWN - driving too fast is the main winter driving error. Every mistake will happen faster, and more dramatically! Use 2nd gear to pull away, gently coming off the clutch to avoid wheel-spin. Drive slowly, keeping a greater distance from the car in front, as stopping distances can be ten times longer when there is snow and ice. Begin slowing down sooner for stops and turns for the same reason. Occasionally check your traction by tapping the brakes. SLIDES – if the car starts to slide when the brakes are applied, stop braking immediately, and apply the brakes again but more slowly SKIDS – steer into skids. For example, if the car starts to skid to the right, turn the wheel to the right until you regain control of the car, and then gently steer back onto the road. This will keep control of the car if you have time to do it! CLIMBING A HILL – the key is to maintain a constant, controlled speed, and avoid changing down a gear on a hill. Reach the correct speed and gear on the lead up to the hill, as you do not want to stop once on the incline. Wait until the hill is clear of other cars, or at least leave plenty of room between you and the car in front. DOWNHILL – reduce your speed and use a low gear as you approach the slope, trying to avoid use of the brakes. As always, leave as much room as possible between you and the car in front. CORNERING - always brake smoothly before entering a corner, but then release the brakes so as to use all the grip of the wheels to take the corner. You can then slowly accelerate out of the corner. MEMORY – if you drive on a regular route, then remember where the icy roads occur. Where do you often see water running across the road or large puddles? Bridges and intersections often ice up, as water tends to collect in these areas. Use your knowledge of the area to plan a safer route! STUCK – straighten the steering wheel and clear snow from around the wheels. Place the sack/old rug in front of the driving wheels to help with grip. Once moving keep going until you are on firmer ground. SNOWBOUND - if you are some distance from civilisation, then it is recommended that you stay with your car as it offers protection and makes it easier for emergency services to spot you. Never set off on foot in blizzard conditions! Just stay put, make sure your car exhaust is clear, run the engine for brief periods to warm the car whilst conserving fuel, and use your phone to let people know your location. BLACK ICE – one of winter’s worst hazards! Black ice is nearly transparent ice that may just look like a puddle or be overlooked completely. The usual rules apply to driving on black ice, if you can spot it. Test the traction of the road if in doubt by gently applying your brakes or slightly turn your steering wheel. 4 x 4 OR ALL-WHEEL DRIVE VEHICLES – can be useful in adverse weather conditions, but only if you know how to use the vehicle correctly, and have not become overconfident! All wheel drive will help you accelerate or keep moving, but it will not stop you sliding on ice or help you turn a snowy corner. Don’t be lulled into a sense of false security, as you will still need the skills already mentioned to maintain traction and keep safe!
J S F Driving School
37 Rushyleaze
LYDNEY GL15 5QW
Introduction to Plc and Scada
Introduction to PLC’s
Programmable Logic Controllers
Bedford Associates, founded by Richard Morley introduced the first Programmable Logic Controller in 1968. This PLC was known as the Modular Digital Controller from which the MODICON company derived its name. The History of the PLC as told to Howard Hendricks by Dick Morley provides an interesting insight into the early development of the PLC.
Schnieder Quantum PLC
Programmable Logic Controllers were developed to provide a replacement for large relay based control panels. These systems were inflexible requiring major rewiring or replacement whenever the control sequence was to be changed.
The development of the micro processor from the mid 1970’s have allowed Programmable Logic Controllers to take on more complex tasks and larger functions as the speed of the processor increased.
Ladder Logic
PLC had to be maintainable by technicians and electrical personnel. To support this the programming language of Ladder Logic was developed. Ladder Logic is based on the relay and contact symbols technicians were used to through wiring diagrams of electrical control panels.
Until recently there has been no formal programming standard for PLC’s. The introduction of the IEC 61131 Standard in 1998 provides a more formal approach to coding. PLC Manufacturers have so far been slow on the uptake of the standard with partial implementation. The SearchEng articleIEC 61131-3, a Standard for PLC Software by R.W. Lewis provides an introduction to the standard.
The documentation for early PLC Programs was either non existent or very poor, just providing simple addressing and basic comments, making large programs difficult to follow. This has been greatly improved with the development of PLC Programming Packages.
SCADA and HMI
The early programmable logic controllers interfaced with the operator in much the same way as the relay control panel, via push-buttons and switches for control and lamps for indication.
The introduction of the Personal Computer (PC) in the 1980’s allowed for the development of a computer based interface to the operator, these where initially via simple Supervisory Control and Data Acquisition (SCADA) systems and more recently via Dedicated Operator Control Panels, known as Human Machine Interfaces (HMI).
The History of the PLC
as told to Howard Hendricks by Dick Morley
The following are some fables associated with the first ten years of the programmable controller business. These Fables may or may not have a basis of truth, but in general, they are the best that my Alzheimer-plagued memory can do at the moment. As has been often in other articles and reports, the startup of Modicon and the programmable controller industry as a whole is well documented. The programmable controller was detailed on New Year’s Day, 1968, and from hence till now, a slow steady growth has allowed the manufacturing and process control industries to take advantage of applications-oriented software.
The early days however, were not as straightforward nor as simple. We had some real problems in the early days of convincing people that a box of software, albeit cased in cast iron, could do the same thing as 50 feet of cabinets, associated relays and wiring. The process was indeed difficult, and deserves some of the stories that I hope the reader will be regaled with as he proceeds onward through the tortuous swamp of my mind.
One of my earliest recommendations was that the programmable controller, according to my own system architecture specification, did not need to go fast because I felt as though speed was not a criteria because it would go as fast as we needed it to. The initial machine, which was never delivered, only had 125 words of memory, and speed was not a criteria as mentioned earlier. You can imagine what happened! First, we immediately ran out of memory, and second, the machine was much too slow to perform any function anywhere near the relay response time. Relay response times exist on the order of 1/60th of a second, and the topology formed by many cabinets full of relays transformed to code is significantly more than 125 words. We expanded the memory to 1K and thence to 4K. At 4K, it stood the test of time for quite a while. Initially, marketing and memory sizes were sold in 1K, 2K, 3K, (?) and 4K. the 3K was obviously the 4K version with constrained address so that field expansion to 4K could easily be done.
The question of speed, in part, was part of the early designs. No interrupts were necessary because the external signal conditions were directly written onto memory without any supervisory requirements or “operating system of the conventional type. This allowed the processor to pay attention to solving logic rather than housekeeping the I/O. As a result, of course, the processor had to have significantly more processing power than normally associated with this size computer; and secondly, the system had to be made to run fast.
We increased the memory size, as mentioned above, but to get it to run fast, we had to break up the machine into three distinct components. Initially, the programmable controller was conceived of a processor board and a memory, and that the algorithmic and logical manipulation would be done in software. This approach was painfully slow, both on the generic “store bought computers, and other items.
We did, however, manage to substantially speed up the machine by making a third major component. This was called the logic solver. A logic solver board solved the dominant algorithms associated with solving ladder logic without the intervention and classical software approach of general-purpose processing. This meant that we ended up with three boards; memory, logic solver and processor. This single step allowed us to get the speed we needed in this application-specific computer to solve the perceptually simple problem of several cabinets full of relay wiring.
We had also assumed a modular approach to the programmable controller. In act, the name Modicon means MOdular DIgital CONtroller. The modularity, however, was soon abandoned because, as everyone knows, open architectures are no good. We instead had the marketing premise that a large footprint would contain within it the sets of problems we wished to solve. This meant that a buyer of programmable controllers could buy large numbers of the same units, and the software and hardware would be identical across a broad spectrum of applications in his factory. Service, maintenance and total life cost would be substantially lower than the perceived lower cost of an open architecture and modular expansion. Although at first, a supporter of the open architecture modular expansion, I soon became convinced by the marketplace, but this was folly.
We took one of our early units which was aimed at the machine tool industry because of my Bedford Associates consulting background, up to one of the early requesters of this equipment. This particular early requester was Byrant Chuck and Grinder in Springfield, Vermont. We took the machine up there, and it was heavy. This was the 084. The 084 was in the trunk of my old Pontiac, and since we needed help carrying it in, requested some of the people at Bryant to help us. We went out and opened the hood, and the first comment made by an outside viewer of the programmable controller said, “Thank God it,s not another pastel colored piece of sheet metal.
We can hypothesize from this particular comment that the ruggedness of the visual design was pleasing to him, and being human (as opposed to Martian), assumed that this same attitude went deep inside the construction of the machine in both the hardware and software. Indeed, this was the case, and the machine as a result, was built rugged, had no ON/OFF switch, had no fans, did not make any noise and had no wear out system.
To reminisce for a moment—in selecting the cores for the first memories, which in itself was a revolutionary step, we selected these cores and we applied Shannon,s Law. Shannon,s Law assumes that the signal-to-noise ratio is what makes signals good or bad. There are several ways to get the power from the signal-to-noise ratio; one is to code heavily, be triply redundant, and use lots and lots of error checking. There is another way, which is perfectly compatible with theory, which is to use lots of signal power in another domain. A nice switch, a car battery and a D-rated light bulb will work fairly well over a long time period.
Therefore, what we did was rather than going error checking, triply redundant and stuff, we got, and searched for and found high energy, large ferrite core memories that had lots on energy per bit. We still make the same assumption today. The energy per bit is extremely important—as Shannon,s theory said in his most famous 1948 paper, that the signal noise to power noise is what gives you transmission. the way we got signal power was to increase the energy per bit. This we felt was far more important than getting the energy per bit increased by means of doubly transmitting it. But I digress. Bryant Chuck and Grinder put it in, and liked the equipment so much that they never bought one. They in turn thought it was a good idea, and as many did at that time, tried to evolve their own.
One of our first major customers, however, was Landis in Landis, PA. We flew the equipment down in a private aircraft, and with apprehension because we were late (as usual), brought the equipment into Landis. In doing so, we tripped over the threshold. The equipment went KA-RASH onto the floor! Without much chagrin, we picked the equipment up, trundled it in. hooked it up, and low and behold, it worked quite well.
Now, Landis was pleased and surprised. They were pleased because it worked, but they were most pleasantly surprised—not because the equipment worked—but because the guys from Modicon fully expected the equipment to work in spite of it being dropped. In other words, the people from Modicon weren,t nervous about the fact that it fell on the floor over the threshold.
Landis subsequently took and wrapped welding coils of wire around the machine to induce electro-magnetic noise to see if they could make it fail. We had them there! We used to test the programmable controllers with a Teslar coil that struck a quarter inch to half-inch arch anywhere on the system, and the programmable controller still had to continue to run. There was significant strangeness with respect to the programmable controller. For example, it had no ON/OFF switch. It had no means to load software. It had no fans. It ran cool. It could survive bad, physical and thermal environments. It was not computer industry standard. There were many things that were most difficult in the acceptance of the programmable controller, and early acceptance was most difficult indeed.
Our sales in the first four years were abysmal. Early innovators such as Landers and General Motors were, of course, heroes to our eyes, but they would buy small numbers of units and then test them in the field before they committed themselves later on. We had one customer in the utilities business that took them approximately six to seven years to make a decision to but the first one.
We never really sold any programmable controllers into the intended market which was machine tool control such as lathes, grinders and stuff, but we did, as luck would have it, stumble across the transfer line market which was and still is the mainstay, long-term market for the application of programmable controllers. Discreet parts manufacturing in an automatic environment, i.e., mass production, continues to be, and probably will be for the future, the mainstay of the programmable controller industry.
Some of the more interesting stories center around the personalities and experiences as opposed to the programmable controller. Modicon,s third president (or fourth, if you count my two-week stint) was Don Kramer. When Don Kramer was chosen as president, we decided to go out and celebrate at the Lanum Club in Andover. At the time, we felt we should celebrate over both martinis and food. As we were leaving the shop for the Lanum Club, Don made the aside comment that “the place is dingy and needs a paint job. As we were leaving, I mentioned to Don that as president you have to change what you say, and not be very open—you have to be a little careful about what you say because employees, customers, and boards of directors tend to take what you say as truth. Rather than listen to the meaning, they listen to the literal statements, and one must be careful. We went over to the Lanum Club and had a nice glowing two hours of discussion, food, and drink. Coming back, as we entered the Modicon lobby, we noticed that there was scaffolding about and people were painting. We went over and asked Lou as to why these people are painting since, at the time, we don,t have any money. Who ordered this paint job? And Lou looked Don Kramer straight in the eye, and said, “Why you did, Mr. Kramer. Nuff said.
As has been mentioned many times, your author, that,s me—Dick Morley—is supposed to be the inventor of the programmable controller. This is at best, partially true. The thing that made the Modicon company and the programmable controller really take off was not the 084, but the 184. The 184 was done in design cycle by Michael Greenberg, one of the best engineers I have ever met. He, and Lee Rousseau, president and marketeer, came up with a specification and a design that revolutionized the automation business. they built the 184 over the objections of yours truly. I was a purist and felt that all those bells and whistles and stuff weren,t “pure, and somehow they were contaminating my “glorious design, Dead wrong again, Morley! they were specifically right on! the 184 was a walloping success, and it—not the 084, not the invention of the programmable controller—but a product designed to meet the needs of the marketplace and the customer, called the 184, took off and made Modicon and the programmable controller the company and industry it is today. My compliments to the two chefs—Lee Rousseau and Mike Greenberg.
The issue of quality in programmable controllers is a story that is normally taken for granted. The gentle reader must remember that our engineering people came from the computer industry where reliability in those days was a phantom—a phantom of design, a phantom of cost. People felt that reliability was something other people did, and that if we only could deliver faster computers, even if they didn,t work, everything would be fine.
When the programmable controller was designed, it was designed in to be reliable. We used lots of energy per information bit by utilizing D-rated components, large memory ferrite cores, relatively stable and large etchings on printed circuit boards, totally enclosed systems and conductive cooling. No fans were used, and outside air was not allowed to enter the system for fear of contamination and corrosion. Mentally, we had imagined the programmable controller being underneath a truck, in the open, and being driven around—driven around in Texas, driven around in Alaska. Under those circumstances, we anted it to survive. The other requirement was that it stood on a pole helping run an utility or a microwave station which was not climate controlled, and not serviced at all. Under those circumstances, would it work for the years that it was intended to be? Could it be walled in? Could it be bolted in a system that was expected to last 20 years?
The humorous side of this is though we did all those designs and very carefully tried to make this system as intrinsically reliable as we could, not by redundancy, but by building well. In other words, it was designed to be built, it was designed to be designed, and it was designed to be reliable. We, however, as engineers, didn,t understand the accountants and manufacturing. those two have their grail, shipments by the end of the month. As far as we could ascertain at the time, shipments were made independent of quality and independent of whether or not the system ran.
In the early days of the programmable controller and Modicon, even though I wasn,t a direct employee and an owner, I would give out my home phone number to many of our critical customers so that if they had a problem, they could call me directly. Several calls indicated that when we shipped near the end of the month, let’s say October 34th, that the equipment would not run; and secondly, when they opened the box and took the machine apart, cards were missing, bolts were on the bottom of the cabinetry, and some of the cards were not fully inserted. In other words, to make the end of the month was much more important than to deliver equipment that ran. to put it mildly, we were pissed! How do we as engineers maintain quality without continual surveillance which is most difficult for the design and entrepreneurial mind set. What we did was specify and design “blue boxes. These were cabinetries that the system had to operate in and run continuously for a minimum of 24 hours, under load, and under varying conditions. The box was built out of plywood, but its primary intention was to heat cycle the programmable controller under various input/output loads. We also ran, as a specification, that a Tesla coil was to be used on the programmable controller, and that vibration and thumping with a hammer (rubber) would be part of the specification.
This may seem unscientific to many of you, but let us assume that you try to get your equipment to run while somebody purposely tries to destroy it with a rubber hammer or spark coil that he can put anywhere on the system. Remember, your intention is to make the processor stop. That combination significantly depressed those monthly shipments during the first period. As a result of that, however, the message got through. Not only did we build ovens and tests, and pay attention to heat and spark and RF emissions, we would run the system continuously even in the shipping crate to get the maximum number of pre-custom hours we could. It was important to us that we found the mistakes and not the customer and his secondary customer.
The language itself, ladder lister, bears some discussion. This particular language was not the invention of Modicon. We hypothesize that the language is very old, and originated in Germany to describe relay circuitry. If one looks at ladder lister, it has been our technical community for so long, we somehow think those little symboligies actually look like relays. In fact, it,s a mnemonic form of rule-based language, very modern and very high level, but designed in a Darwinian fashion over a period of many decades.
The ladder logic construct, “If… Then… is a very powerful construct used today in expert systems and other rule-based languages. The symbology, allowing normally open and normally closed situations as well as parallel and serial representation, was used for many decades before the invention of the programmable controller. I have worked on machines where the number of C-size and D-size prints were hung in special racks, and would be up to three feet thick worth of documentation on those drawing sets.
The name ladder comes from the fact that on the right-hand of the drawing is one power rail and the left-hand side is the other power rail; and in between in a horizontal fashion, is the statement or sequential connection of logical elements which we call relays or relay logic. The initial 084 had only logic in its functionality, and as a result, was marginal. In other words, all we did was replace relays rather than enhance the functionality by a factor of ten which is the entrepreneurial rule. Immediately, of course, based on customer response and our own frustrations, we put thing in the ladder listing language such as addition, multiplication, subtraction, and other functionalities that went far beyond relay capability and entered the realm of mathematics and set theory. This was still not sufficient, however, and we needed some way to make a “call to a “subroutine using ladder lister symbology and representation.
A software engineer, Chuck Schelberg, and myself were in the conference room one day trying to ascertain how we could make a generic call to functionalities that far exceeded the relay symbology and representation, and came up with the “DX function. This function was a block function that would be an element on the ladder logic representation that could perform many functionalities including arrays, motor drive functions, servo functions, extended mathematical functions, PID loops, ad nauseam. We felt there would be an occasional representation and use of these functionalities, and that not much had to be done to the programmable controller other than to modify the software. Wrong again!
The first customer that took delivery of a programmable controller utilizing the DX function, had a capability to be predictable and operate in real time. The RUN light went out, and the time to execute a scan or complete transformation of the ladder logic went far beyond the time allowable. Every single line had a DX function on it. Again we learned that when you enhance functionality, people use it all. I have never designed a computer that had too much memory. I,ve only designed computers that have too little memory. The same thing applies to any other functionality. Conventional wisdom seems to think that price/performance depends on only one thing—price—when, in fact, my experience has been that the customer cares little about price.
This price/performance tirade being over, one of the lessons we learned is that the customer wants functionality over the entire life cycle cost installation of the job. the customer also wants ease of installation, to have some fun, and to be proud of the work he does. After he,s finished, he never wants to come back.. The equipment should work as installed and as based. At one time, the programmable controller meantime before failure in the field was 50,000 hours. This is far in excess of almost any other type of electronic or control equipment.
The concept of languages and high-level languages is important. The programmable controller, as it evolved, began to request more and more power, and more and more memory. The memories continually went up as well as power. It is estimated that at one time, in the mid-1970s, that the programmable controller had the equivalent of two MIPS processor and 128 kilobytes of memory, which at that time was a significantly powered minicomputer capability. Why? High-level languages require power to run them. If we take the equivalent of the ladder lister statement “If… Then…, the high-level language as represented here, requires a substantial amount of interpretive compiler, if you will, generation of underlying code. In other words, this statement spawns significant underlying code that must be run quickly, reliably, and contain within it, all aspects of resource allocation and operations resource. The higher level the language, the more powerful the processor apparently has to be in order to run the language. Ladder lister is a high-level rule-based language which, until now, we haven,t talked much about in these terms. Our customers treated the programmable controller as a box of relays, and well they should. Language theory is neither necessary not desirable for most of the customers to know. The customers, instead, understand their problem, and are indeed much smarter than the design engineers because the dimensions of their problem far exceed the relatively simple problem of designing a computer software system and language. Ladder lister requires high performance which is one of the reasons it has difficulty running on the personal computer even of today
INTRODUCTION TO SCADA
SCADA is the abbreviation for Supervisory Control And Data Acquisition. It generally refers to an industrial control system: a computer system monitoring and controlling a process. The process can be industrial, infrastructure or facility based as described below:
Industrial processes include those of manufacturing, production, power generation, fabrication, and refining, and may run in continuous, batch, repetitive, or discrete modes.
Infrastructure processes may be public or private, and include water treatment and distribution, wastewater collection and treatment, oil and gas pipelines, electrical power transmission and distribution, and large communication systems.
Facility processes occur both in public facilities and private ones, including buildings, airports, ships, and space stations. They monitor and control HVAC, access, and energy consumption.
A SCADA System usually consists of the following subsystems:
A Human-Machine Interface or HMI is the apparatus which presents process data to a human operator, and through which the human operator monitors and controls the process.
A supervisory (computer) system, gathering (acquiring) data on the process and sending commands (control) to the process
Remote Terminal Units (RTUs) connecting to sensors in the process, converting sensor signals to digital data and sending digital data to the supervisory system.
Communication infrastructure connecting the supervisory system to the Remote Terminals Units
There is, in several industries, considerable confusion over the differences between SCADA systems and Distributed control systems (DCS). Generally speaking, a SCADA system usually refers to a system that coordinates, but does not control processes in real time. The discussion on real-time control is muddied somewhat by newer telecommunications technology, enabling reliable, low latency, high speed communications over wide areas. Most differences between SCADA and Distributed control system DCS are culturally determined and can usually be ignored. As communication infrastructures with higher capacity become available, the difference between SCADA and DCS will fade.
Systems concepts
The term SCADA usually refers to centralized systems which monitor and control entire sites, or complexes of systems spread out over large areas (anything between an industrial plant and a country). Most control actions are performed automatically by remote terminals units (”RTUs”) or by programmable logic controllers (”PLCs”). Host control functions are usually restricted to basic overriding or supervisory level intervention. For example, a PLC may control the flow of cooling water through part of an industrial process, but the SCADA system may allow operators to change the set points for the flow, and enable alarm conditions, such as loss of flow and high temperature, to be displayed and recorded. The feedback control loop passes through the RTU or PLC, while the SCADA system monitors the overall performance of the loop.
Data acquistion begins at the RTU or PLC level and includes meter readings and equipment status reports that are communicated to SCADA as required. Data is then compiled and formatted in such a way that a control room operator using the HMI can make supervisory decisions to adjust or override normal RTU (PLC) controls. Data may also be fed to a Historian, often built on a commodity Database Management System, to allow trending and other analytical auditing.
SCADA systems typically implement a distributed database, commonly referred to as a tag database, which contains data elements called tags or points. A point represents a single input or output value monitored or controlled by the system. Points can be either “hard” or “soft”. A hard point represents an actual input or output within the system, while a soft point results from logic and math operations applied to other points. (Most implementations conceptually remove the distinction by making every property a “soft” point expression, which may, in the simplest case, equal a single hard point.) Points are normally stored as value-timestamp pairs: a value, and the timestamp when it was recorded or calculated. A series of value-timestamp pairs gives the history of that point. It’s also common to store additional metadata with tags, such as the path to a field device or PLC register, design time comments, and alarm information.
Human Machine Interface
A Human-Machine Interface or HMI is the apparatus which presents process data to a human operator, and through which the human operator controls the process.
An HMI is usually linked to the SCADA system’s databases and software programs, to provide trending, diagnostic data, and management information such as scheduled maintenance procedures, logistic information, detailed schematics for a particular sensor or machine, and expert-system troubleshooting guides.
The HMI system usually presents the information to the operating personnel graphically, in the form of a mimic diagram. This means that the operator can see a schematic representation of the plant being controlled. For example, a picture of a pump connected to a pipe can show the operator that the pump is running and how much fluid it is pumping through the pipe at the moment. The operator can then switch the pump off. The HMI software will show the flow rate of the fluid in the pipe decrease in real time. Mimic diagrams may consist of line graphics and schematic symbols to represent process elements, or may consist of digital photographs of the process equipment overlain with animated symbols.
The HMI package for the SCADA system typically includes a drawing program that the operators or system maintenance personnel use to change the way these points are represented in the interface. These representations can be as simple as an on-screen traffic light, which represents the state of an actual traffic light in the field, or as complex as a multi-projector display representing the position of all of the elevators in a skyscraper or all of the trains on a railway.
An important part of most SCADA implementations are alarms. An alarm is a digital status point that has either the value NORMAL or ALARM. Alarms can be created in such a way that when their requirements are met, they are activated. An example of an alarm is the “fuel tank empty” light in a car. The SCADA operator’s attention is drawn to the part of the system requiring attention by the alarm. Emails and text messages are often sent along with an alarm activation alerting managers along with the SCADA operator.
Hardware solutions
SCADA solutions often have Distributed Control System (DCS) components. Use of “smart” RTUs or PLCs, which are capable of autonomously executing simple logic processes without involving the master computer, is increasing. A functional block programming language, IEC 61131-3, is frequently used to create programs which run on these RTUs and PLCs. Unlike a procedural language such as the C programming language or FORTRAN, IEC 61131-3 has minimal training requirements by virtue of resembling historic physical control arrays. This allows SCADA system engineers to perform both the design and implementation of a program to be executed on an RTU or PLC. Since about 1998, virtually all major PLC manufacturers have offered integrated HMI/SCADA systems, many of them using open and non-proprietary communications protocols. Numerous specialized third-party HMI/SCADA packages, offering built-in compatibility with most major PLCs, have also entered the market, allowing mechanical engineers, electrical engineers and technicians to configure HMIs themselves, without the need for a custom-made program written by a software developer.
Remote Terminal Unit (RTU)
The RTU connects to physical equipment. Typically, an RTU converts the electrical signals from the equipment to digital values such as the open/closed status from a switch or a valve, or measurements such as pressure, flow, voltage or current. By converting digital setpoints to electrical signals and sending these electrical signals out to equipment the RTU can control equipment, such as opening or closing a switch or a valve, or setting the speed of a pump.
Quality SCADA RTUs have these characteristics:
Data Networking capability
Data Reliability
Data Security.
Supervisory Station
The term “Supervisory Station” refers to the servers and software responsible for communicating with the field equipment (RTUs, PLCs, etc), and then to the HMI software running on workstations in the control room, or elsewhere. In smaller SCADA systems, the master station may be composed of a single PC. In larger SCADA systems, the master station may include multiple servers, distributed software applications, and disaster recovery sites. To increase the integrity of the system the multiple servers will often be configured in a dual-redundant or hot-standby formation providing continuous control and monitoring in the event of a server failure.
Initially, more “open” platforms such as Linux were not as widely used due to the highly dynamic development environment and because a SCADA customer that was able to afford the field hardware and devices to be controlled could usually also purchase UNIX or OpenVMS licenses. Today, all major operating systems are used for both master station servers and HMI workstations.
Operational philosophy
For some installations, the costs that would result from the control system failing is extremely high. Possibly even lives could be lost. Hardware for some SCADA systems is ruggedized to withstand temperature, vibration, and voltage extremes, but in most critical installations reliability is enhanced by having redundant hardware and communications channels, up to the point of having multiple fully equipped control centres. A failing part can be quickly identified and its functionality automatically taken over by backup hardware. A failed part can often be replaced without interrupting the process. The reliability of such systems can be calculated statistically and is stated as the mean time to failure, which is a variant of mean time between failures. The calculated mean time to failure of such high reliability systems can be on the order of centuries.
Communication infrastructure and methods
SCADA systems have traditionally used combinations of radio and direct serial or modem connections to meet communication requirements, although Ethernet and IP over SONET / SDH is also frequently used at large sites such as railways and power stations. The remote management or monitoring function of a SCADA system is often referred to as telemetry.
This has also come under threat with some customers wanting SCADA data to travel over their pre-established corporate networks or to share the network with other applications. The legacy of the early low-bandwidth protocols remains, though. SCADA protocols are designed to be very compact and many are designed to send information to the master station only when the master station polls the RTU. Typical legacy SCADA protocols include Modbus RTU, RP-570, Profibus and Conitel. These communication protocols are all SCADA-vendor specific but are widely adopted and used. Standard protocols are IEC 60870-5-101 or 104, IEC 61850 and DNP3. These communication protocols are standardized and recognized by all major SCADA vendors. Many of these protocols now contain extensions to operate over TCP/IP. It is good security engineering practice to avoid connecting SCADA systems to the Internet so the attack surface is reduced.
RTUs and other automatic controller devices were being developed before the advent of industry wide standards for interoperability. The result is that developers and their management created a multitude of control protocols. Among the larger vendors, there was also the incentive to create their own protocol to “lock in” their customer base. A list of automation protocols is being compiled here.
Recently, OLE for Process Control (OPC) has become a widely accepted solution for intercommunicating different hardware and software, allowing communication even between devices originally not intended to be part of an industrial network.
Trends in SCADA
There is a trend for PLC and HMI/SCADA software to be more “mix-and-match”. In the mid 1990s, the typical DAQ I/O manufacturer supplied equipment that communicated using proprietary protocols over a suitable-distance carrier like RS-485. End users who invested in a particular vendor’s hardware solution often found themselves restricted to a limited choice of equipment when requirements changed (e.g. system expansions or performance improvement). To mitigate such problems, open communication protocols such as IEC870-5-101/104 and DNP 3.0 (serial and over IP) became increasingly popular among SCADA equipment manufacturers and solution providers alike. Open architecture SCADA systems enabled users to mix-and-match products from different vendors to develop solutions that were better than those that could be achieved when restricted to a single vendor’s product offering.
Towards the late 1990s, the shift towards open communications continued with individual I/O manufacturers as well, who adopted open message structures such as Modbus RTU and Modbus ASCII (originally both developed by Modicon) over RS-485. By 2000, most I/O makers offered completely open interfacing such as Modbus TCP over Ethernet and IP.
SCADA systems are coming in line with standard networking technologies. Ethernet and TCP/IP based protocols are replacing the older proprietary standards. Although certain characteristics of frame-based network communication technology (determinism, synchronization, protocol selection, environment suitability) have restricted the adoption of Ethernet in a few specialized applications, the vast majority of markets have accepted Ethernet networks for HMI/SCADA.
“Next generation” protocols such as OPC-UA, Wonderware’s SuiteLink, GE Fanuc’s Proficy and Rockwell Automation’s FactoryTalk, take advantage of XML, web services and other modern web technologies, making them more easily IT supportable.
With the emergence of software as a service in the broader software industry, a few vendors have begun offering application specific SCADA systems hosted on remote platforms over the Internet, for example, PumpView by MultiTrode. This removes the need to install and commission systems at the end-user’s facility and takes advantage of security features already available in Internet technology, VPNs and SSL. Some concerns include security, Internet connection reliability, and latency.
SCADA systems are becoming increasingly ubiquitous. Thin clients, web portals, and web based products are gaining popularity with most major vendors. The increased convenience of end users viewing their processes remotely introduces security considerations.
Security issues
The move from proprietary technologies to more standardized and open solutions together with the increased number of connections between SCADA systems and office networks and the Internet has made them more vulnerable to attacks. Consequently, the security of SCADA-based systems has come into question as they are increasingly seen as extremely vulnerable to cyberwarfare/cyberterrorism attacks.
In particular, security researchers are concerned about:
the lack of concern about security and authentication in the design, deployment and operation of existing SCADA networks
the mistaken belief that SCADA systems have the benefit of security through obscurity through the use of specialized protocols and proprietary interfaces
the mistaken belief that SCADA networks are secure because they are purportedly physically secured
the mistaken belief that SCADA networks are secure because they are supposedly disconnected from the Internet
Because of the mission-critical nature of a large number of SCADA systems, such attacks could, in a worst case scenario, cause massive financial losses through loss of data or actual physical destruction, misuse or theft, even loss of life, either directly or indirectly. Whether such concerns will cause a move away from the use of existing SCADA systems for mission-critical applications towards more secure architectures and configurations remains to be seen, given that at least some influential people in corporate and governmental circles believe that the benefits and lower initial costs of SCADA based systems still outweigh potential costs and risks] Recently, multiple security vendors, such as Byres Security, Inc., Industrial Defender Inc., Check Point and Innominate, and N-Dimension Solutions have begun to address these risks by developing lines of specialized industrial firewall and VPN solutions for TCP/IP-based SCADA networks. The problem according to Eric Byres, CEO of Byres Security, is that “while many infrastructure organizations are doing good work, others are falling behind. When you have this diversity of effort, you are only as effective as your weakest link.
Also, the ISA Security Compliance Institute (ISCI) is emerging to formalize SCADA security testing starting as soon as 2009. ISCI is conceptually similar to private testing and certification that has been performed by vendors since 2007, such as the Achilles certification program from Wurldtech Security Technologies, Inc. and MUSIC certification from Mu Security, Inc. Eventually, standards being defined by ISA SP99 WG4 will supersede these initial industry consortia efforts, but probably not before 2011.
Radio System for Toys
The radio system is to connect between you and your model rc toys (remote control toys) such as rc car, rc helicopter, nitro rc car, rc gas boat, remote control helicopter, remote control car etc.. It looks like a bit complicated at the very beginning but with some study, all aspects of the radio system can be easily understood. We will introduce you to the radio system here and explain a few of the features found on many of the systems available today.
Radios are separated into two groups, those used for model aircraft and those used for
surface models. Although the operation, electronics, and mechanics for both types of systems are virtually identical, they operate on different sets of frequencies. The separation is stipulated by law and it is to protect the safety of the modeler and those in the vicinity.
A flying aircraft can be dangerous if it becomes uncontrolled and the frequency separation helps avoid an aircraft being interfered with by someone operating a car or boat. In addition to a difference in frequencies, some surface radios are also available as a pistol grip control which is ergonomically easier when controlling cars and boats. A pistol grip for aircraft would be impractical.
The first criteria one usually looks for when choosing a radio is the number of control functions or channels. (Note that the term channels here refers to the number of controls and does not have anything to do with the frequency on which the radio operates.) Generally modern radio systems are available with anything from 2 to 10 channels.
What comes with the radio
Transmitter: The transmitter is the control box which you hold that converts your human control movements into electrical impulses and sends them via radio waves to the receiver in your model.
Receiver: The receiver is the small electronic unit in your model which converts the radio signal from your transmitter into electrical control signals which can be sent to your servos.
Servos: Servos are the devices in the model which actually produce the control movements. They convert the electrical signals from your receiver into physical movement to control your model. A different servo is required for each control function or radio channel.
Batteries: Virtually all 4-channel and greater systems come complete with rechargeable NiCd
battery packs for both receiver and transmitter.
Dual Charger: A dual charger will come with any system that is complete with NiCd batteries.
It will charge both the receiver pack and the transmitter pack at the same time. Switch Harness: A switch harness is provided to turn off the power to the receiver and servos in the model. It goes between the battery pack and receiver and also has a lead for charging.
Servo Accessories: Most radio systems will come with additional servo arms and hardware for mounting them.
P.S. Common rc toys (remote control toys) and hobby items: rc car, rc helicopter, nitro rc car, rc gas boat, remote control helicopter, remote control car etc.
David ZHENG is the CEO of China Topwin Industry Co., Ltd rc car, rc helicopter, nitro rc car, rc gas boat, remote control helicopter, remote control car, Topwin hobby a specialty trader of a variety of toys and hobby items, such as rc car, rc helicopter, nitro rc car, rc gas boat, remote control helicopter, remote control car etc.
http://www.chinatopwin.com
Intelligent Solar Lamps for Rural India
INTELLIGENT SOLAR LAMPS FOR RURAL INDIA
S. N . Singh , Dr A .K .Singh *
Department of Electronics Engineering
Department of Electrical Engineering *
NIT , Jamshedpur 831014
Jharkhand (India)
Phone : + 91-9835171619 (M)
e-mail : snsnitjsr@sify.com
e-mail : akselect2006@yahoo.co.in*
Abstract
Solar powered lightening system is becoming popular in remote isolated Indian villages. The design and construction principle of a solar lamp is presented in this paper. It investigates the performance characteristic of the proposed system. The paper also presents the comparison of the proposed solar lantern with conventional lightening systems, hurricane lantern and candle, in terms of cost and performance. The Impact of these systems in the life of the Indian villagers has been reflected in terms of parameters like employment generation, their educational and economic status etc.
Introduction
Lightening is essentially required for a human being in his living place wherever it might be. There are places in remote Indian villages where grid supply is not possible due to technical and economic reasons . An alternative source of lightening may be used in such isolated remote areas. The operation of alternative source should not be sophisticated one so that rural people can easily operate. In the present study solar lamp has been used to meet the lightening system requirement of these remote villages. The constructional features and performance characteristic of the new proposed solar lamp has been presented .The comparison between new proposed lamp with other conventional lightening system, hurricane lamps and candle is also presented in terms of construction, performance characteristic and cost [1,2,3 ].
Conventional sources of lightening
The conventional sources of lightening used in a rural home are usually of two types:
i) Hurricane
ii) Candle
The hurricane lantern is made of steel. It has a reservoir/tank of fuel. The usual fuel is kerosene. The flame is produced by firing a cotton feather, which absorb kerosene from the fuel tank. The flame is covered by a tubular glass. The life of these lamps are 5 years
A candle is made of wax. It provides light for 20 hour or more depending on the size of candle. In the present study a candle of 25 cm height and 5 cm diameter has been used which give light for 20 hours.
Technology of Solar Lantern
Solar lamp consists of following components/modules as shown in Fig (1)
§ PV module 3W/10W – 6V/12V
§ Battery 4.5/7.5AH
§ Power Converter 230V,10W
§ Lamp (LEDS) 10W
§ Intelligent Controller
The source of the energy of the proposed lantern is the DC electricity produced by a solar panel during insolation period. The energy is stored in a battery which supplies power to lamp (LEDS) working as a load.
A voltage regulator circuit controls the charging of the battery. The low voltage protection circuit is incorporated to prevent the battery from deep discharging (SOC=50%)
An inverter circuit converts DC voltage to sinusoidal PWM AC waveforms with 95 % efficiency and THD less than 2%.
The unique feature of the innovative intelligent solar lamp is its controlled delivery of power through intelligent action of the control switches to regulate the intensity of lamps as per requirement
PV
Inverter
Battery
Intelligence Controller
Load (Lamp)
Fig (1) Schematic Diagram of Solar Lamp
Illumination Level of Lamps
The output power in terms of illumination of solar lamp and its comparative study with conventional Lamps have been shown in Fig (2)
Fig (2) Comparison of illumination level of solar powered lamp, hurricane lamp and candle lamp
Cost Analysis of Different Lamps
The cost of solar lantern include the cost of different accessories which include Voltage Control Unit, Low voltage protection Circuit , Inverter LEDS, Casing and SMF Battery etc. In the cost analysis of hurricane lamp its life time is considered as 5 year. The consumption of kerosene is 40 ml per hour and is used for 4 hour a day for lightening purpose. The cost of candle is also evaluated considering 4 hours of illumination each day.
The annual repayment cost of different types of the lamps is given in Table 5
Table (5) Cost of different type of Lamps
Lightening Lamps
Life cycle
Annual Expenditure (Rs.)
10 Watt Solar Lantern
20 year
1750=00
Hurricane Lamp
1-5 year
2000=00
Candle
20 hour
2500=00
Experimental Investigation on Solar Lamps
(A) The out put power generated by PV Source during insolation is presented in Table (1)
Table (1) PV Source Output (watt)
Time
PV Output (watt)
6:30 am
1
7:00am
2
8:00 am
4
9:00 am
8
10:00 am
10
11:00 am
11
12:00 Noon
12
1:00 pm
10
2:00 pm
8
3:00 pm
7
4:00 pm
6
5:00 pm
3
6.30 pm
1
(B) The 10W solar panel charges 6V/4.5AH single SMF battery. The charging of battery is done in two modes of operation i.e. trickle and boost for both cloudy and sunny day. Table (2)
presents the SOC of the battery depicting the voltage and charging current.
Table (2) Development of charges in battery connected to 10W PV panel
Time
Battery voltage (volt) / current
Cloudy day
Sunny day
6:30 am
4.57V/0.04A
3.98V/0.06A
7:00 am
5.80 / 0.06
5.00 / 0.07
8:00 am
5.80 / 0.12
5.50 / 0.09
9:00 am
5.90 / 0.14
5.60 / 0.12
10:00 am
5.95 / 0.24
5.70 / 0.13
11:00 am
6.00 / 0.22
5.75 /0.20
12:00 Noon
6.50 / 0.20
5.80 /0.23
1:00 pm
6.10 / 0.17
6.10 / 0.30
2:00 pm
6.20 / 0.16
6.20/ 0.20
3:00 pm
6.20 / 0.15
6.30/ 0.10
4:00 pm
6.25 / 0.04
6.30 / 0.09
5:00 pm
6.30 / 0.01
6.30 / 0.03
(C) The output power in terms of illumination was measured in Lux at different distances from the solar lantern and observations as recorded is given in Table (3.)
Table (3) Illumination Data of Solar Lamps
Distance (cm)
Voltages (Volt )
7.0
4.5
1.5
30
350
240
80
61
100
80
19
91
50
43
10
122
45
30
8
152
40
22
7
183
30
18
6
213
20
12
5
274
11
11
5
305
8
8
5
335
6
6
5
Utilization of Solar Lamps and Socio- Economic Impact Study
A study was carried out to analyze the benefit of use of solar lantern in different remote village houses of East Singhbhum district of Jharkhand State ( India) [ 4 ] .The Database was obtained with the interview of approximately 1000 villagers in different villages of the District under study, where such Lightening system were implemented, through a pre-structure questionnaire to record data and analyze the impact of solar Lamps on their socio economic development and the findings were concludes as presented in Table (6)
Table (6) Impact of Solar Lamps in the society of village
Parameters
Benefits
(% Increase)
Employment Generation
50%
Educational Status
30%
Economic Status
40%
Communication
10%
Health Awareness
30%
Clinic
5%
Animal Population
20%
Rural Cottage Industries
50%
The study reveals that the use of solar Lamp can give further benefit to villagers in many ways such as their children can do school work till late in the evening . Barbers can open their shops till late night.
Basket weavers can devote more time under solar light during evening hours and can increase their productivity.
A Basket weavers in a Solar Rural House of Bodam Village In Patamda Block of East Singhbhoom District of Jharkhand State (India)
Villagers can prepare their food under solar light during night hour. Aganbari centers can be run under solar light to conduct Distance Education OBC Literacy classes of National Open School (Government of India) for school drop-outs children or vocational linked Literacy classes for neo literate adult persons. Training programme of need oriented vocational courses can be arranged by Jan Shikhan Sansthan (Sponsored organization of Government of India) for potential youths specially for Tribal villagers and other weaker section of society for self employment or wage employment.
The author is distributing the certificate on successful completion of a training programme on basket weaving to tribal villagers in Patamda Block of East Singhbhoom District of Jharkhand State .
People can walk from one place to another place during night hours also. Tele-communication (WLL) services can be started in solar light powered community centers. Tailor shop can be opened during night hours.
A solar powered Lamp in a Tailor Shop in Koladoba Village in Ghatsila Block of East Singhbhoom District of Jharkhad State (India)
Self employment can be generated in villages and thus potential youths can supplement their family income.
A village potential youth running a cycle repair shop under solar powered lightening house in Patamada Block of the District East Sighbhoom of Jharkhand State
The death rate can be reduced which are caused by snake bites due to darkness during evening hours .Village Health centers can be made operative during evening hours by Government Doctors People can be educated on general education through awareness programme in solar light powered Panchayat Bhawan of villages by NGOs. Goatary, ,Piggery and Poultry Farms can be powered with solar lights Small scale farmers producing cottage industry products (like agarbati , Jam and Jelly , Papad etc) can substantiate their family income. Thus more and more employment can be generated for potential youths in rural villages and migration of these potential youths from villages can be stopped.
The government of India and state Government agency are taking initiative and are providing the solar lamps at subsidised rate to the villagers through Block offices of every district /
DRDA of Jharkhand state and many other states of our country .
Conclusion
Solar lamps are gaining popularity in remote villages due to its portability and light in weight. It produces pollution free clean light source energy as compared to conventional lamps, hurricane and candles.
In this paper the design, construction and performance characteristic of different types of lamps have been presented and comparison of cost on yearly basis between all type of lamps have been done It is clearly observed that solar lantern is much cheaper than other lamps, hurricane and candles. More ever it produces more illumination without any operational hazard
The study reveals that use of intelligent solar lamps as proposed for lightening system have resulted in a significant impact on the lives of rural population allowing them to replace their poor quality kerosene lamps producing toxic gasses with more efficient safer and pollution free solar lamps
LITERATURE
M. Alam et al Solar Power Lantern, B.Sc Engg Thesis 199 B HUET, Dhake
J.E Kanman et al IES Lightening handbook. Reference volume 1981 Illuminating engineering society of North America
Q Ah San “Solar Power Lantern for Flood Affected Area” IEEE 2000 page 487 – 492.
S. N . Singh , Dr A .K .Singh *
Department of Electronics Engineering
Department of Electrical Engineering *
NIT , Jamshedpur 831014
Jharkhand (India)
Phone : + 91-9835171619 (M)
e-mail : snsnitjsr@sify.com
e-mail : akselect2006@yahoo.co.in*
Wetland Ecosystem Conservation: A Review
1. Introduction
A system is a group of parts that interact through one or more processes (Odum 1983). The term ecosystem was introduced and defined by Tansley (1935), who as “a fundamental organizational unit of the natural world that includes both organisms and their spatial environment.” Ecosystems have since been defined in various ways, and at different spatial and temporal scales (Golley 1993; O’Neill et al. 1986; Evans 1956). Some ecologists define ecosystems on the basis of biotic organisms, populations, or communities. For example, Hutchinson (1978) considered the ecosystem to be the environmental context in which population or community dynamics occur. Others define ecosystems in terms of their abiotic characteristics and processes (Rowe and Barnes 1994). For example, Lindeman (1942) defined ecosystems as “…the system composed of physical, chemical, and biological processes active within a space/time unit.” Regardless of whether the emphasis is on biotic components or abiotic characteristics and processes of ecosystems, both remain integral to the concept of ecosystem. Rowe (1961) emphasized this when he defined ecosystems as “…a three dimensional segment of the earth where life forms and the environment interact.”
Wetland ecosystems have been defined in a variety of ways by researchers, resource managers, and regulatory authorities, depending on their specific needs and objectives (Mitsch and Gosselink 1993). In the applied world of regulation, planning, and management, wetlands are usually defined in terms of their physical, chemical, and biological characteristics such as hydrologic regime, soil type, and plant species composition. For example, in classifying wetlands for mapping, inventory, and other purposes, Cowardin et al. (1979) defined wetlands as “…lands transitional between terrestrial and aquatic systems where the water table is usually at or near the surface or the land is covered by shallow water…” that are characterized by the presence of hydrophytic vegetation, hydric soils, and surface water during the growing season.
Wetlands are often biodiversity ‘hotspots’ (Reid et al., 2005), as well as functioning as filters for pollutants from both point and non-point sources, and being important for carbon sequestration and emissions (Finlayson et al., 2005). The value of the world’s wetlands are increasingly receiving due attention as they contribute to a healthy environment in many ways. Wetland functions are defined as the normal or characteristic activities that take place in wetland ecosystems or simply the things that wetlands do. Wetlands perform a wide variety of functions in a hierarchy from simple to complex as a result of their physical, chemical, and biological attributes. For example, the reduction of nitrate to gaseous nitrogen is a relatively simple function performed by wetlands when aerobic and anaerobic conditions exist in the presence of denitrifying bacteria. Nitrogen cycling and nutrient cycling represent increasingly more complex wetland functions that involve a greater number of structural components and processes. At the highest level of this hierarchy is the maintenance of ecological integrity, the function that encompasses all of the structural components and processes in a wetland ecosystem. Wetlands are one of the most productive of all ecosystems, and carry out critical regulatory functions of hydrological processes within watersheds (Banner et al. 1988). Regulating water quality, water levels, flooding regimes, and nutrient and sedimentation levels are a few of these processes (Gregory et al. 1991). As with any natural habitat, wetlands are important in supporting species diversity and have a complex of wetland values. Moreover, the pattern of seasonal variation of the wetland affects the bird population fluctuation (Imran. A. D and Mithas. A. D 2009). Even small wetlands are extremely important to the conservation of biodiversity because they provide critical breeding habitat where dispersed populations can exchange genetic material, reducing the risks of extinction (Semlitsch and Brodie 1998).
The present review is aimed at providing in a nutshell, the distribution of wetlands, the value of Wetlands, the causes and consequences of the loss of wetlands and their conservation status with special reference to India.
2. Distribution of wetlands in India
In India a total area of 40494 km2 is classified as wetlands. This consists only 1.21 per cent of the total land surface. Most of the wetlands in India are directly or indirectly linked with major river systems such as the Ganga, the Cauvery, the Krishan, the Godavari and the Tapti. A Directory of Wetlands in India (1988) gives information on the location, area and ecological categorization of wetlands of our country. Wetlands in India are distributed in different geographical regions ranging from Himalayas to Deccan plateau. The variability in climatic conditions and changing topography is responsible for significant diversity. They are classified into different types based on their origin, vegetation, nutrient status, thermal characteristics, like 1. Glaciatic Wetlands (e.g., Tsomoriri in Jammu and Kashmir, Chandertal in Himachal Pradesh).
2. Tectonic Wetlands (e.g., Nilnag in Jammu and Kashmir, Khajjiar in Himachal Pradesh, and Nainital and Bhimtal in Uttaranchal).
3. Oxbow Wetlands (e.g., Dal Lake, Wular Lake in Jammu and Kashmir and Loktak Lake in Manipur and some of the wetlands in the river plains of Brahmaputra and Indo-Gangetic region. Deepor Beel in Assam, Kabar in Bihar, Surahtal in Uttar Pradesh).
4. Lagoons (e.g., Chilika in Orissa).
5. Crater Wetlands (Lonar lake in Maharashtra).
6. Salt water Wetlands (e.g., Pangong Tso in Jammu and Kashmir and Sambhar in Rajasthan)
7. Urban Wetlands (e.g., Dal Lake in Jammu and Kashmir, Nainital in Uttaranchal and Bhoj in Madhya Pradesh).
8. Ponds/Tanks, man-made Wetlands (e.g., Harike in Punjab and Pong Dam in Himachal Pradesh).
9. Reservoirs (e.g., Idukki, Hirakud dam, Bhakra-Nangal dam).
10. Mangroves (e.g., Bhitarkanika in Orissa).
11. Coral reefs (e.g., Lakshadweep).
12. Creeks (Thane Creek in Maharashtra), seagrasses, estuaries, thermal springs are some kinds of wetlands in the country.
The Indo-Gangetic flood plain is the largest wetland system in India, extending from the river Indus in the west to Brahmaputra in the east. This includes the wetlands of the Himalayan terai and the Indo-Gangetic plains. The vast intertidal areas, mangroves and lagoons along the 7500 kilometer long coastline in West Bengal, Orissa, Andhra Pradesh, Tamil Nadu, Kerala, Karnataka, Goa, Maharashtra and Gujarat. Mangrove forests of the Sunderbans of West Bengal and the Andaman and Nicobar Islands. Offshore coral reefs of the Gulf of Kutch, Gulf of Mannar, Lakshadweep and Andaman and Nicobar Islands.
Ninety-four wetlands have been identified for conservation and management under the National Programme for Conservation and Management of Wetlands.
These wetlands are eligible for financial assistance on 100% grant basis to the concerned State Governments for undertaking activities like survey and demarcation, weed control, catchment area treatment, desiltation, conservation of biodiversity, pollution abatement, livelihood support creation of minor infrastructure, educational awareness, capacity building of various stakeholders, and community development. So far 24 States have been covered; the remaining States are expected to the covered in the Eleventh Five-Year Plan.
Wetlands play a vital role in maintaining the overall cultural, economic and ecological health of the ecosystem, their fast pace of disappearance from the landscape is of great concern. The Wildlife Protection Act protects few of the ecologically sensitive regions whereas several wetlands are becoming an easy target for anthropogenic exploitation. Survey of 147 major sites across various agro climatic zones identified the anthropogenic interference as the main cause of wetland degradation (The Directory of Indian Wetlands 1993). Current spatial spread of wetlands under various categories is shown.
3. Wetland losses – a threat to ecological balance
Threats to wetland ecosystems comprise the increasing biotic and abiotic pressures and perils.
Biotic
(1) Uncontrolled siltation and weed infestation.
(2) Uncontrolled discharge of waste water, industrial effluents, surface run-off, etc. resulting
in proliferation of aquatic weeds, which adversely affect the flora and fauna.
(3) Tree felling for fuel wood and wood products causes soil loss affecting rainfall pattern,
loss of various aquatic species due to water-level fluctuation.
(4) Habitat destruction leading to loss of fish and decrease in number of migratory birds.
Abiotic
(1) Encroachment resulting in shrinkage of area.
(2) Anthropogenic pressures resulting in habitat destruction and loss of biodiversity.
(3) Uncontrolled dredging resulting in successional changes.
(4) Hydrological intervention resulting in loss of aquifers.
(5) Pollution from point and non-point sources resulting in deterioration of water quality.
(6) Ill-effects of fertilizers and insecticides used in adjoining agricultural fields.
Coastal ecosystems are among the most productive yet highly threatened systems in the world. These ecosystems produce disproportionately more services relating to human well-being than most other systems, even those covering larger total areas, but are experiencing some of the most rapid degradation and loss:
(1). About 35% of mangroves have been lost over the last two decades, driven primarily by aquaculture development, deforestation, and freshwater diversion.
(2). Some 20% of coral reefs were lost and more than a further 20% degraded in the last several decades of the twentieth century through overexploitation, destructive fishing practices, pollution and siltation and changes in storm frequency and intensity.
(3). There is established but incomplete evidence that the changes being made are increasing the likelihood of nonlinear and potentially abrupt changes in ecosystems, with important consequences for human well-being. These nonlinear changes can be large in magnitude and difficult, expensive, or impossible to reverse. For example, once a threshold of nutrient loading is crossed, changes in freshwater and coastal ecosystems can be abrupt and extensive, creating harmful algal blooms (including blooms of toxic species) and sometimes leading to the formation of oxygen-depleted zones, killing all animal life. Capabilities for predicting some nonlinear changes are improving, but on the whole scientists cannot predict the thresholds at which change will be encountered. The increased likelihood of these nonlinear changes stems from the loss of biodiversity and growing pressures from multiple direct drivers of ecosystem change. The loss of species and genetic diversity decreases the resilience of ecosystems —their ability to maintain particular ecosystem services as conditions change. In addition, growing pressures from drivers such as overharvesting, climate change, invasive species, and nutrient loading push ecosystems toward thresholds that they might otherwise not encounter.
(4). Many wetland-dependent species in many parts of the world are in decline; the status of species dependent on inland waters and of waterbirds dependent on coastal wetlands is of particular concern. Although the evidence has geographical limitations and is chiefly from species already globally threatened with extinction.
The primary indirect drivers of degradation and loss of rivers, lakes, freshwater marshes, and other inland wetlands (including loss of species or reductions of populations in these systems) have been population growth and increasing economic development. The primary direct drivers of degradation and loss include infrastructure development, land conversion, water withdrawal, pollution, overharvesting and overexploitation, and the introduction of invasive alien species.
The current loss rates in India can lead to serious consequences, where 74% of the human population is rural (Anon. 1994) and many of these people are resource dependent. Healthy wetlands are essential in India for sustainable food production and potable water availability for humans and livestock. They are also necessary for the continued existence of India’s diverse populations of wildlife and plant species; a large number of endemic species are wetland dependent. Most problems pertaining to India’s wetlands are related to human population. India contains 16% of the world’s population, and yet constitutes only 2.42% of the earth’s surface. Indian landscape has contained fewer and fewer natural wetlands over time. Restoration of these converted wetlands is quite difficult once these sites are occupied for non-wetland uses. Hence, the demand for wetland products (e.g., water, fish, wood, fiber, medicinal plants etc.) will increase with increase in population. Wetland loss refers to physical loss in the spatial extent or loss in the wetland function. The loss of one km2 of wetlands in India will have much greater impacts than the loss of one km2 of wetlands in low population areas of abundant wetlands (Foote Lee et al. 1996). The wetland loss in India can be divided into two broad groups namely acute and chronic losses. The filling up of wet areas with soil constitutes acute loss whereas the gradual elimination of forest cover with subsequent erosion and sedimentation of the wetlands over many decades is termed as chronic loss.
Acute wetland losses
(1). Direct deforestation in wetlands: Mangrove vegetation are flood and salt tolerant and grow along the coasts and are valued for fish and shellfish, livestock fodder, fuel wood, building materials, local medicine, honey, bees wax and for extracting chemicals for tanning leather (Ahmad 1980). Alternative farming methods and fisheries production has replaced many mangrove areas and continues to pose threats. Eighty percent of India’s 4240 km2 of mangrove forests occur in the Sunderbans and the Andaman and Nicobar Islands (Anon. 1991). But most of the coastal mangroves are under severe pressure due to the economic demand on shrimps. Important ecosystem functions such as buffer zones against storm surges, nursery grounds and escape cover for commercially important fishery are lost. The shrimp farms also caused excessive withdrawal of freshwater and increased pollution load on water like increased lime, organic wastes, pesticides, chemicals and disease causing organisms. The greatest impacts were on the people directly dependent on the mangroves for natural materials, fish proteins and revenue. The ability of wetlands to trap sediments and slow water is reduced.
(2). Hydrologic alteration: Alteration in the hydrology can change the character, functions, values and the appearance of wetlands. The changes in hydrology include either the removal of water from wetlands or raising the land-surface elevation, such that it no longer floods. Canal dredging operations have been conducted in India from 1800s due to which 3044 km2 of irrigated land has increased to 4550 km2 in 1990 (Anon. 1994). Initial increase in the crop productivity has given way for reduced fertility and salt accumulations in soil due to irrigated farming of arid soils. India has 32,000 ha of peat-land remaining and drainage of these lands will lead to rapid subsidence of soil surface.
(3). Agricultural conversion: The primary direct driver of the loss and degradation of coastal wetlands, including saltwater marshes, mangroves, seagrass meadows, and coral reefs, has been conversion to other land uses. In the Indian subcontinent due to rice culture, there has been a loss in the spatial extent of wetlands. Rice farming is a wetland dependent activity and is developed in riparian zones, river deltas and savannah areas. Due to captured precipitation for fishpond aquaculture in the catchment areas and rice-farms occupying areas that are not wetlands, water is deprived to the downstream natural wetlands. Around 1.6 million hectares of freshwater are covered by freshwater fishponds in India. Rice-fields and fishponds come under wetlands, but they rarely function like natural wetlands. Of the estimated 58.2 million hectares of wetlands in India, 40.9 million hectares are under rice cultivation (Anon. 1993).
Chronic wetland losses
(1). Degradation of water quality: Water quality is directly proportional to human population and its various activities. More than 50,000 small and large lakes are polluted to the point of being considered ‘dead’ (Chopra 1985). The major polluting factors are sewage, industrial pollution and agricultural runoff, which may contain pesticides, fertilizers and herbicides.
(2). Introduced species and extinction of native biota: Wetlands in India support around 2400 species and subspecies of birds. But losses in habitat have threatened the diversity of these ecosystems (Mitchell & Gopal 1990). Introduction of exotic species like water hyacinth (Eichornia crassipes) and salvinia (Salvinia molesta) have threatened the wetlands and clogged the waterways competing with the native vegetation. In a recent attempt at prioritization of wetlands for conservation, Samant (1999) noted that as many as 700 potential wetlands do not have any data to prioritize. Many of these wetlands are threatened.
(3). Ground water depletion: Draining of wetlands has depleted the ground water recharge. Recent estimate indicates that in rural India, about 6000 villages are without a source for drinking water due to the rapid depletion of ground water.
4. Condition and Trends in Wetland-dependent Species
There is increasing evidence of a rapid and continuing widespread decline in many populations of wetland-dependent species. Data on the status and population trends of species in some inland wetland-dependent groups, including mollusks, amphibians, fish, waterbirds, and some water-dependent mammals, have been compiled and show clear declines. An overall index of the trend in vertebrate species populations has also been developed and shows a continuous and rapid decline in freshwater vertebrate populations since 1970—a markedly more drastic decline than for terrestrial or marine species.
Even in the case of more poorly known wetland fauna, such as invertebrates, existing assessments show that species in these groups are significantly threatened with extinction. For example, the IUCN Red List reports that some 275 species of freshwater crustacea and 420 freshwater mollusks are globally threatened, although no comprehensive global assessment has been made of all the species in these groups. In the United States, one of the few countries to comprehensively assess freshwater mollusks and crustaceans, 50% of known crayfish species and two thirds of freshwater mollusks are at risk of extinction, and at least one in 10 freshwater mollusks are likely to have already gone extinct. Nearly one third (1,856 species) of the world’s amphibian species are threatened with extinction, a large portion of which (964 species) are freshwater-dependent. (By comparison, just 12% of all bird species and 23% of all mammal species are threatened.) In addition, at least 43% of all amphibian species are declining in population, indicating that the number of threatened species can be expected to rise in the future. In contrast, less than 1% of species show population increases. Species dependent on flowing water have a much higher likelihood of being threatened than those in still water. (Figure 5) Basins with the highest number of threatened freshwater species— between 13 and 98 species—include the Amazon, Yangtze, Niger, Paraná, Mekong, Red and Pearl (China), Krishna (India), and Balsas and Usumacinta (Central America). The rate of decline in the conservation status of freshwater amphibians is far greater than that of terrestrial species. As amphibians are excellent indicators of the quality of the overall environment, this underpins the notion of the current declining condition of freshwater habitats around the world.
Key vulnerabilities
Gitay et al. (2001) have described some inland aquatic ecosystems (Arctic, sub-Arctic ombrotrophic bog communities on permafrost, depressional wetlands with small catchments, drained or otherwise converted peatlands) as most vulnerable to climate change, and have indicated the limits to adaptations due to the dependence on water availability controlled by outside factors. More recent results show vulnerability varying by geographical region (Stern, 2007). This includes significant negative impacts across 25% of Africa by 2100 (SRES B1 emissions scenario, de Wit and Stankiewicz, 2006) with both water quality and ecosystem goods and services deteriorating. Since it is generally difficult and costly to control hydrological regimes, the interdependence between catchments across national borders often leaves little scope for adaptation.
Impacts
Climate change impacts on inland aquatic ecosystems will range from the direct effects of the rise in temperature and CO2 concentration to indirect effects through alterations in the hydrology resulting from the changes in the regional or global precipitation regimes and the melting of glaciers and ice cover (e.g., Chapters 1 and 3; Cubasch et al., 2001; Lemke et al., 2007; Meehl et al., 2007). Studies since the TAR (Third assessment report of IPCC) have confirmed and strengthened the earlier conclusions that rising temperature will lower water quality in lakes through a fall in hypolimnetic oxygen concentrations, release of phosphorus (P) from sediments, increased thermal stability, and altered mixing patterns (Jankowski et al., 2006). In northern latitudes, ice cover on lakes and rivers will continue to break up earlier and the ice-free periods to increase (Duguay et al., 2006). Higher temperatures will negatively affect micro-organisms and benthic invertebrates (Kling et al., 2003) and the distribution of many species of fish (Kling et al., 2003); invertebrates, waterfowl and tropical invasive biota are likely to shift polewards (Zalakevicius and Svazas, 2005) with some potential extinctions. Major changes will be likely to occur in the species composition, seasonality and production of planktonic communities (e.g., increases in toxic blue-green algal blooms) and their food web interactions (Winder and Schindler, 2004) with consequent changes in water quality. Enhanced UV-B radiation and increased summer precipitation will significantly increase dissolved organic carbon concentrations, altering major biogeochemical cycles (Frey and Smith, 2005). Studies along an altitudinal gradient in Sweden show that NPP can increase by an order of magnitude for a 6°C air temperature increase (Karlsson et al., 2005). However, tropical lakes may respond with a decrease in NPP and a decline in fish yields (e.g., 20% NPP and 30% fish yield reduction in Lake Tanganyika due to warming over the last century O’Reilly et al., 2003). Higher CO2 levels will generally increase NPP in many wetlands, although in bogs and paddy fields it may also stimulate methane flux, thereby negating positive effects (Zheng et al., 2006). Boreal peatlands will be affected most by warming and increased winter precipitation as the species composition of both plant and animal communities will change significantly (Weltzin et al., 2000, 2001, 2003; Berendse et al., 2001; Keller et al., 2004;). Numerous arctic lakes will dry out with a 2-3°C temperature rise (Smith et al., 2005 
. The seasonal migration patterns and routes of many wetland species will need to change and some may be threatened with extinction. Small increases in the variability of precipitation regimes will significantly impact wetland plants and animals at different stages of their life cycle. In monsoonal regions, increased variability risks diminishing wetland biodiversity and prolonged dry periods promote terrestrialisation of wetlands as witnessed in Keoladeo National Park, India (Chauhan and Gopal, 2001).
5. Wetland management – current status
Wetlands are not delineated under any specific administrative jurisdiction. The primary responsibility for the management of these ecosystems is in the hands of the Ministry of Environment and Forests. Although some wetlands are protected after the formulation of the Wildlife Protection Act, the others are in grave danger of extinction. Effective coordination between the different ministries, energy, industry, fisheries revenue, agriculture, transport and water resources, is essential for the protection of these ecosystems.
Cardinal Constituents of Comprehensive Strategy for Wetland Conservation:
The conservation and management of wetlands calls for a comprehensive strategy, ranging from legal framework and policy support to inventorization, institutional mechanism, capacity building, and community participation. The position with regard to these aspects is as follows:
Legal framework
Though there is no separate provision for specific legal instrument for wetland conservation, the legal framework for conservation and management is provided by the following legal instruments:
1. Several legislations have been enacted which have relevance to wetland conservation. These include Forest Act, 1927, Forest (Conservation) Act, 1980, the Wildlife (Protection) Act, 1972, the Air (Prevention and Control of Pollution) Act, 1974, the Water Cess Act, 1977 and the umbrella provision of Environment (Protection) Act, 1986.
2. India has set up 505 Wildlife Sanctuaries and 100 National Parks, 14 Biosphere Reserves, 6 Heritage Sites, Projects on Tiger conservation and Elephant conservation and Marine Turtles conservation with the objective of effective conservation of wetlands, and floral and faunal wealth in forest areas.
3. Notification declaring the coastal stretches of seas, bays, estuaries, creeks, rivers and backwaters, which are influenced by tidal action (in the landward side) up to 500 metres from the high tide line, and the land between the low tide line and the high tide line as the Coastal Regulation Zone Notification, 1991 under the provision of Environment (Protection) Act, 1986. This proposes graded restriction on setting up and expansion of industries, including pressures from human activities.
4. Portions of the listed sites have been declared as Wildlife Sanctuaries and National Parks.
5. Guidelines for sustainable development and management of brackish water aquaculture have been drawn up. State Governments like Andhra Pradesh and Tamil Nadu have aquaculture guidelines also at the local level.
6. The Biodiversity Act, 2002, and the Biodiversity Rules, 2004, are aimed at safeguarding the floral and faunal biodiversity, and regulating their flow from the country to other countries for research and commercial use. Thus, their provisions also contribute towards conserving, maintaining, and augmenting the floral, faunal and avifaunal biodiversity of the country’s aquatic bodies.
Policy Support: National Environment Policy (NEP), 2006
Our National Environment Policy (NEP), approved by the Cabinet on 19 May 2006, recognizes the numerous ecological services rendered by wetlands. The NEP states:
‘Wetlands are under threat from drainage and conversion for agriculture and human settlements, besides pollution. This happens because public authorities or individuals having jurisdiction over wetlands derive little revenues from them, while the alternative use may result in windfall financial gains to them. However, in many cases, the economic values of wetlands’ environmental services may significantly exceed the value from alternative use. On the otherhand, the reduction in economic value of their environmental services due to pollution, as well as the health costs of the pollution itself are not taken into account while using them as a waste dump. There also does not yet exist a formal system of wetland regulation outside the international commitments made in respect of Ramsar sites. A holistic view of wetlands is necessary, which looks at each identified wetland in terms of its causal linkages with other natural entities, human needs, and its own attributes.’
The Environmental Policy identifies the following six-fold Action Plan:
1. Set up a legally enforceable regulatory mechanism for identified valuable wetlands to prevent their degradation and enhance their conservation. Develop a national inventory of such wetlands.
2. Formulate conservation and prudent use strategies for each significant catalogued wetland, with participation of local communities, and other relevant stakeholders.
3. Formulate and implement eco-tourism strategies for identified wetlands through multi stakeholder partnerships involving public agencies, local communities and investors.
4. Take explicit amount of impacts on wetlands of significant development projects during the environmental appraisal of such projects; in particular, the reduction in economic value of wetland environmental services should be explicitly factored into cost-benefit analysis.
5. Consider particular unique wetlands as entities with ‘Incomparable Values’, in developing strategies for their protection.
6. Integrate wetland conservation, including conservation of village ponds and tanks, into sectoral development plans for poverty alleviation and livelihood improvement, and the link efforts for conservation and sustainable use of wetlands with the ongoing rural infrastructure development and employment generation programmes. Promote traditional techniques and practices for conserving village ponds.
Inventorization
Survey and inventorization should take into consideration identification of different human activities, effect of both industrial and domestic effluents, and information obtained through remote sensing to be verified with the ground truth data for getting proper results. This component includes mapping of catchment areas through revenue records, survey and assessment, and land-use pattern using GIS techniques, with emphasis on drainage pattern, vegetation cover, siltation cover, encroachment, conversion of wetlands, human settlements, total area encroached, human activities at the primary, secondary, and tertiary levels, and their impact on catchment and water body. The following surveys of wetlands have been undertaken so far:
1. Asian Wetland Directory, 1989 – identified 93 Wetlands of International Importance.
2. Wetland Directory published in 1990 by the Ministry of Environment and Forests using questionnaire survey.
3. Identification of 2167 natural freshwater wetlands covering 1.5 million ha area.
4. Identification of 65,253 man-made freshwater wetlands covering 2.6 million ha area.
5. WWF-India and the Ministry of Environment and Forests in 1993 identified 54 additional wetlands of international importance with more details.
6. Space Application Centre using remote sensing techniques identified 27,403 inland and coastal wetlands covering 7.6 million ha
7. Salim Ali Centre for Ornithology under UNDP project has undertaken survey of 72 districts.
8. A project on ‘National Wetland Information System and Updation of Wetland Inventory’ has been sanctioned by the Ministry of Environment and Forests. The objectives of this project are (1) to map and inventorize wetlands on 1:50,000 scale by on-screen interpretation of digital IRS LISS III data of post and pre-monsoon seasons, (2) to prepare State-wise wetland Atlases, and (3) to create a digital database in GIS environment in respect of all wetlands in the country.
9. The Centre for Advanced Studies in Marine Biology at Annamalai University, Parangipettai, has been assisted in project mode for updating all wetlands in the country.
Institutional mechanism
(a) It is imperative to have multi-disciplinary, holistic and integrated approach for achieving long-term sustainable wetland conservation and management measures. At present, various models exist in States and different nodal agencies are responsible for implementing the Wetland Conservation Programme. In some States, the programme is executed by the Department of Forests and/or Environment or Urban Development; in some others, it is the Department of Irrigation or Science and Technology or Fisheries. However, the Wetland Conservation and Management is a specialized technical and scientific field where multi-disciplinary approach is needed, involving a number of components like water management, sustainable fisheries development, hydrological aspects, socio-economic issues, community participation, weed control, biodiversity conservation and use of aquatic macrophytes for nutrient recycling process, hydrological aspects providing information about inflow/outflow pattern in the system, nutrient fluxes and nutritional dynamics. These aspects need to be dealt with in a coordinated manner by managers having expertise in the relevant fields.
(b) Taking into consideration the complexity of the issue, the State Steering Committees have been constituted under the chairmanship of Chief Secretaries of the States having members from all Departments concerned. The Committee is also expected to have representatives from communities, NGOs and academicians. The officer from the nodal department acts as a member-secretary of the Committee. The success of the programme depends upon its strong institutional mechanism where conservation efforts are undertaken through integrated and multi-disciplinary approach. However, due to inadequacy of infrastructure and staff, conservation activities are yet to acquire comprehensiveness and sustainability in some States.
State Governments have been advised to consider constitution of Wetland Conservation Authorities so that experts from various Departments undertake conservation activities in a more scientific, cohesive and sustainable manner.
(c) Some States have already constituted Authorities for execution of wetland conservation programmes in their respective States. Notable among them are Chilika Development Authority in Orissa (mandated to manage all identified lakes in the State); Loktak Development Authority in Manipur; Shore Area Development Authority in Andhra Pradesh; Lakes and Waterways Development Authority in Jammu and Kashmir; Lake Development Authority in Karnataka and Lake Conservation Authority in Madhya Pradesh.
Capacity building
Capacity building is a major tool without which no conservation activity is possible. We need to have good infrastructure, trained people, and case studies to teach values and functions of wetlands in an integrated and multi-disciplinary manner. The Ministry has taken several initiatives in this regard as per details given below.
(a) It has published several reports/documents on conservation and wise use of wetlands which include six monographs on Ramsar sites in collaboration with WWF India and eco-tourism guidelines for Chilika Lake.
(b) During the Tenth Five Year Plan, several training programmes have been conducted in collaboration with different academic organizations/research institutes/State Governments/international NGOs to impart training on various components of wetland conservation which include wise use, catchment area treatment, weed control, hydrological aspects, research methodology, preparation of management action plans and community participation. Training is imparted to policy makers, senior/ middle level managers, organizations, stakeholders and others. A National Training Programme for Integrated Water Resource Management and Wetland Conservation was organized during 7-11 August 2006 by Chilika Development Authority with the financial support from Ministry of Environment and Forests. More training programmes are proposed to be organized at different regions of the
Country.
A series of regional workshops were organized in various parts of the country to make people aware of the importance of wetlands and integrate their traditional knowledge in the planning process. The following regional and international workshops were organized during the Tenth Plan:
1 Western Region, Gujarat
2 Southern Region, Kerala
3 Eastern Region, Orissa
4 North-Eastern Region, Manipur
5 Central Region, Madhya Pradesh
6 Northern region, Uttar Pradesh
7 Northern region, Jammu and Kashmir
8 Southern region, Lakshadweep
9 International Workshop on High Altitude Wetlands, Sikkim
10 Meeting of Board of Directors of Wetland International, Rajasthan
Holding regional workshops along with research organizations and wetland managers is an ongoing feature.
Community Participation
(a) No decision-making is complete without participation of local people whose livelihoods depend on wetland resources. People have been using wetlands since time immemorial. We have to blend both traditional and latest scientific technologies to achieve long-term conservation goals. Participatory Rural Appraisal exercise involving local communities should be the main ingredient of community participation. It should also take into consideration issues of women and gender sensitization and involve women in the management process.
(b) The component of community participation comprises the following constituents.
1. Assessment of resource availability by surveys and participatory rural appraisal of the site.
2. Stakeholder analysis
3. Contact with external institutions for resource and technical advice
4. Utilization of wastes and aquatic weeds for energy regeneration, for example through installation of community- based biogas plants.
5. Additional alternate income generation programmes like handloom, handicrafts, integrated farm management techniques and other measures to reduce pressure on wetlands.
6. Highlighting of gender-related cross-cultural, governance-related practices and other special concerns for assessment by community.
(c) The Joint Forest Management Committees (JFMCs), also referred to as Village Protection Committees (VPCs) or Eco-Development Committees (EDCs), are expected to play an active role in conservation and management of wetlands located in forest fringe areas, i.e. normally within a radius of 5 km of forest boundary. The JFMC/ VPC/EDC shall be instrumental in mobilization of communities and for implementing equitable access to information rights.
Use of Geo-spatial technology in wetland management
Remote sensing data in combination with Geographic Information System (GIS) are effective tools for wetland conservation and management. The application encompasses water resource assessment, hydrologic modeling, flood management, reservoir capacity surveys, assessment and monitoring of the environmental impacts of water resources project and water quality mapping and monitoring (Jonna 1999).
Flood zonation mapping
Satellite data are used for interpretation and delineation of flood-inundated regions, flood-risk zones. Temporal data helps us to obtain correct ground information about the status of ongoing conservation projects. IRS 1C/D WIFS data having 180 km spatial resolution and high temporal repetitiveness has helped in delineating the zonation of flooding areas of large river bodies, thus helping in the preparation of state-wise and basin wise flood inventories.
Water quality analysis and modeling
Remote sensing data is used for the analysis of water quality parameters and modeling. Water quality studies have been done carried out using the relationship between reflectance, suspended solid concentration, and chlorophyll-a concentration. In the near infrared wavelength range, the amount of suspended solids content is directly proportional to the reflectance. Due to spatial and temporal resolution of satellite data information of the source of pollution and the point of discharge, inflow of sewage can be regularly monitored. Using IRS LISS II data (Sasmal & Raju 1996) monitored the suspended load in estuarine waters of Hoogly, West Bengal in a GIS environment. In this study band 4 of the data set was found to show a wider range of digital classes indicating a better response with depth than rest of the bands. Landsat TM and IRS –1A data were used to estimate sediment load in Upper lake, Bhopal (Raju et al. 1993). This study showed high relationship between the satellite as well as ground truth radiometric data and total suspended solids. Different image processing algorithms are also used on Landsat MSS dataset to delineate sediment concentration in reservoirs (Jonna et al. 1989). Qualitative remote sensing methods have been used for real time monitoring of Inland Water quality (Gitelson et al. 1993) Airborne sensor has also been used to study the primary productivity and related parameters of coastal waters and large water bodies (Seshmani et al. 1994).
Water resource management
With the development of highly precise remote sensing techniques in spatial resolution and GIS, the modeling of watershed has become more physically based and distributed to enumerate interactive hydrological processes considering spatial heterogeneity. A distributed model with SCS curve number method called as Land Use Change (LUC) model was developed (Mohan & Shresta 2000) to assess the hydrological changes due to land use modification. The model developed was applied to Bagmati river catchment in Kathmandu valley basin, Nepal. The study clearly demonstrated that integration of remote sensing, GIS and spatially distributed model provides a powerful tool for assessment of the hydrological changes due to landuse modifications.
Mapping of Wetland
The Space Application Center (SAC) has mapped the wetlands at 1:250000 scale in the mainland as well the islands using the visual interpretation of coarse resolution satellite data. The states of Sikkim, West Bengal, Goa Punjab, Haryana, Himachal Pradesh, Chandigarh, Delhi, Andaman, Nicobar, Lakshwadeep, Dadra and Nagerhaveli were mapped at 1:50000 scale. However, in the rest of the country, only wetlands of 56.25 ha and above in size could be mapped. It is known that a vast majority of wetlands-often in number, extent and conservation importance is below 50 ha in size (For example, those in the Indo-gangetic plains and in the Deccan peninsula). Thus, the inventory covered only a small number of wetlands: more over, the conservation values are not known for those wetlands even whose inventory has now been obtained. The data merely indicates location of wetlands, the classification of wetlands on 1:250,000 scale is moreover, only geomorphologic in nature (such as Oxbow lakes, Playas, Lakes and Ponds etc.) and has no other factual biological conservation value. By itself, the information will only be partly useful for conservation of wetlands. This estimate is likely to be twice if we include wetlands of size 50 ha or less (Das et al. 1994 for Etwah and Mainpuri districts of U.P.).
6. Conclusion
Threats to wetland ecosystems comprise the increasing biotic and abiotic pressures and perils. About 35% of mangroves have been lost over the last two decades, driven primarily by aquaculture development, deforestation, and freshwater diversion. Some 20% of coral reefs were lost and more than a further 20% degraded in the last several decades of the twentieth century through overexploitation, destructive fishing practices, pollution and siltation and changes in storm frequency and intensity. The primary direct driver of the loss and degradation of coastal wetlands, including saltwater marshes, mangroves, seagrass meadows, and coral reefs, has been conversion to other land uses. In the Indian subcontinent due to rice culture, there has been a loss in the spatial extent of wetlands. Wetlands in India support around 2400 species and subspecies of birds. But losses in habitat have threatened the diversity of these ecosystems Introduction of exotic species like water hyacinth (Eichornia crassipes) and salvinia (Salvinia molesta) have threatened the wetlands and clogged the waterways competing with the native vegetation. As many as 700 potential wetlands do not have any data to prioritize. Many of these wetlands are threatened. In monsoonal regions, increased variability risks diminishing wetland biodiversity and prolonged dry periods promote terrestrialisation of wetlands as witnessed in Keoladeo National Park, India. So far as current status of wetland management in India is concerned, Wetlands are not delineated under any specific administrative jurisdiction. The primary responsibility for the management of these ecosystems is in the hands of the Ministry of Environment and Forests. Although some wetlands are protected after the formulation of the Wildlife Protection Act, the others are in grave danger of extinction. Effective coordination between the different ministries, energy, industry, fisheries revenue, agriculture, transport and water resources, is essential for the protection of these ecosystems. The dynamic nature of wetlands necessitates the widespread and consistent use of satellite based remote sensors and low cost, affordable GIS tools for effective management and monitoring.
References
1. Ahmad, N. 1980. Some aspects of economic resources of Sunderbans mangrove forests of Bangladesh. pp. 50- 51. In: P. Soepadmo (ed.) Mangrove Environment: Research and Management. Report on UNESCO Asian Symposium, held at University of Malaya, Kuala Lumpur, Malaysia, 25-29 August 1980.
2. Anonymous, 1991. India 1990. A Refrence Annual. Research and Reference Division, Ministry of Information and Broadcasting, Govt. of India, Delhi.
3. Anonymous, 1993. Directory of Indian Wetlands. World Wildlife Federation, New Delhi
4. Anonymous, 1994. World Development Report. World Bank Development Report.
5. Banner A, RJ Hebda, ET Oswald, J Pojar, and R Trowbridge 1988 Wetlands of Pacific Canada. In Wetlands of Canada, National Wetlands Working Group. Polyscience, Ottawa, ON., pp. 306–346.
6. Chauhan,M. and B. Gopal, 2001: Biodiversity andmanagement of Keoladeo National Park (India): a wetland of international importance. Biodiversity in Wetlands: Assessment, Function and Conservation: Volume 2, B. Gopal,W.J. Junk and J.A. Davies, Eds., Backhuys Publishers, Leiden, 217-256.
7. Chopra, R. 1985. The State of India’s Environment. Ambassador Press, New Delhi.
8. Cowardin, L. M., Carter, V., Golet, F. C., and LaRoe, E. T. (1979). “Classification of wetlands and deepwater habitats of the United States,” U.S. Fish and Wildlife Service, Office of Biological Services, FWS/OBS-79/31, Washington, DC.
9. Cubasch, U., G.A.Meehl, G.J. Boer, R.J. Stouffer,M. Dix,A. Noda, C.A. Senior, S. Raper and K.S. Yap, 2001: Projections of future climate change. Climate Change 2001: The Scientific Basis. Contribution ofWorking Group I to the Third Assessment Report of the Intergovernmental Panel on Climate Change, J.T. Houghton, Y. Ding, D.J. Griggs, M. Noguer, P.J. van der Linden, X. Dai, K. Maskell and C.A. Johnson, Eds., Cambridge University Press, Cambridge, 525- 582.
10. de Wit, M. and J. Stankiewicz, 2006: Changes in surface water supply across Africa with predicted climate change. Science, 311, 1917-1921.
11. Duguay, C.R., T.D. Prowse, B.R. Bonsal, R.D. Brown, M.P. Lacroix and P. Menard, 2006: Recent trends in Canadian lake ice cover. Hydrol. Process., 20, 781-801.
12. Evans, F. C. (1956). “Ecosystem as the basic unit in ecology,” Science 123, 1127- 1128.
13. Finlayson, C.M., R. D’Cruz, N. Davidson, J. Alder, S. Cork, R. de Groot, C. Leveque, G.R. Milton, G. Peterson, D. Pritchard, B.D. Ratner, W.V. Reid, C. Revenga, M. Rivera, F. Schutyser, M. Siebentritt, M. Stuip, R. Tharme, S. Butchart, E. Dieme-Amting, H. Gitay, S. Raaymakers and D. Taylor, Eds., 2005: Ecosystems and HumanWell-being:Wetlands and Water Synthesis. Island Press, Washington, District of Columbia, 80 pp.
14. Foote Lee, S., Pandey & N.T. Krogman. 1996. Processes of wetland loss in India. Environmental Conservation 23: 45-54.
15. Frey, K.E. and L.C. Smith, 2005:Amplified carbon release from vastWest Siberian peatlands by 2100. Geophys. Res. Lett., 32, L09401, doi:10.1029/2004GL02202
16. Gitay, H., S. Brown, W. Easterling and B. Jallow, 2001: Ecosystems and their goods and services. Climate Change 2001: Impacts, Adaptation, and Vulnerability. Contribution of Working Group II to the Third Assessment Report of the Intergovernmental Panel on Climate Change, J.J.McCarthy, O.F. Canziani, N.A. Leary, D.J. Dokken and K.S. White, Eds., Cambridge University Press, Cambridge, 237-342.
17. Gitelson, A., G. Garbuzov., F. Szilagyi., K.H. Mittenzwey., A. Karnielli & A. Kaiser. 1993. Quantitative remote sensing methods for real-time monitoring of inland water quality. International Journal of Remote Sensing 14: 1269-1295.
18. Golley, F. B. (1993). A history of the ecosystem concept in ecology. Yale University Press, New Haven, CT.
19. Goswami, A.K. Rai, N.D. Sharma, K.V. Ravindran & P.K. Sharma (eds.). Proceedings National Symposium on Remote Sensing Applications for Resource Management with Special Emphasis on N. E. Region, Guwahati.
29. Gregory SV, FJ Swanson, WA McKee, and WC.Kenneth, 1991. An ecosystem perspective of riparian zones. Bioscience 41:540–550.
21. Hutchinson, G. E. (1978). An introduction to population ecology. Yale University Press, New Haven, CN.
22. Imran. A. Dar and Mithas. A. Dar; Seasonal variation of Bird Population in Shallabug Wetland Kashmir, India: Journal of Wetland Ecology, (2009) vol. 2, pp 19-33
23. Imran. A. Dar and Mithas. A. Dar; Evaluation of Bird Population Fluctuation in Haigam Wetland, Kashmir: ESAIJ (Environmental Science: An Indian Journal), 4(5), 2009 [260- 268]
24. Jankowski, T., D.M. Livingstone, H. Buhrer, R. Forster and P. Niederhaser, 2006: Consequences of the 2003 European heat wave for lake temperature profiles, thermal stability and hypolimnetic oxygen depletion: implications for a warmer world. Limnol. Oceanogr., 51, 815-819.
25. Jonna, S. 1999. Remote sensing applications to water resources: retrospective and Perspective. pp. 368- 377. In: S. Adiga (ed.). Proceedings of ISRS National Symposium on Remote Sensing Applications for Natural Resources. Dehradun.
26. Jonna, S., K.V.S. Badarinath & J. Saibaba. 1989. Digital image processing of remote sensing data for water quality studies. Journal of the Indian Society of Remote Sensing 17: 59-64.
27. Karlsson, J.,A. Jonsson andM. Jansson, 2005: Productivity of high-latitude lakes: climate effect inferred fromaltitude gradient. Global Change Biol., 11, 710-715.
28. Kling, J., K. Hayhoe, L.B. Johnsoin, J.J. Magnuson, S. Polasky, S.K. Robinson, B.J. Shuter,M.M.Wander, D.J.Wuebbles and D.R. Zak, 2003: Confronting Climate Change in the Great Lakes Region: Impacts on our Communities and Ecosystems. Union of Concerned Scientists and the Ecological Society of America, Cambridge, Massachusetts andWashington, District of Columbia, 92 pp.
29. Lemke, P., J. Ren, R.Alley, I.Allison, J. Carrasco, G. Flato, Y. Fujii, G. Kaser, P. Mote, R. Thomas and T. Zhang, 2007: Observations: changes in snow, ice and frozen ground. Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, S. Solomon, D. Qin, M. Manning, Z. Chen, M. Marquis, K.B.Averyt, M. Tignor and H.L. Miller, Eds., Cambridge University Press, Cambridge, 335-383.
30. Lindeman, R. L. (1942). “The trophic dynamics of ecology,” Ecology 23, 399- 418.
31. Meehl, G.A., T.F. Stocker, W. Collins, P. Friedlingstein, A. Gaye, J. Gregory, A. Kitoh, R. Knutti, J.Murphy,A. Noda, S. Raper, I.Watterson,A.Weaver and Z.- C. Zhao, 2007: Global climate projections. Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, S. Solomon, D. Qin,M. Manning, Z. Chen, M. Marquis, K.B. Averyt, M. Tignor and H.L. Miller, Eds., Cambridge University Press, Cambridge, 747-845.
32. Mitchell, S. & B. Gopal. 1990. Invasion of tropical freshwater by alien species. pp. 139-154. In: P. S. Ramakrishnan (ed.) Ecology of Biological Invasion in the Tropics.
33. Mitsch, W. J., and Gosselink, J. G. (1993). Wetlands. 2nd ed., Van Nostrand Reinhold, New York.
34. Mohan, S. & M.N. Shrestha. 2000. A GIS based integrated model for assessment of hydrological changes due to land-use modifications. pp. 27-29. In: T.V. Ramchandra (ed.) Symposium on Restoration of Lakes and Wetlands, November 2000, Indian Institute of Sciences, Bangalore.
35. Odum, H. T. (1983). Systems ecology: An introduction. Wiley Interscience Publication, New York.
36. O’Neill, R. V., DeAngelis, D. L., Waide, J. B., and Allen, T. F. H. (1986). “A hierarchical concept of ecosystems,” Monographs in Population Biology 23, Princeton University Press, Princeton, NJ.
37. Parikh, J. & K. Parikh. 1999. Sustainable Wetland. Environmental Governance – 2, Indira Gandhi Institute of Development Research, Mumbai.
38. Raju, P.L.N., A.K. Chakraborti & C.V. Deshpande. 1993. Estimation of suspended sediment load upper lake, Bhopal using remote sensing techniques. pp. 25-27. In: B. Sahai, D.C.
39. Reid,W.V., H.A.Mooney,A. Cropper, D. Capistrano, S.R. Carpenter, K. Chopra, P. Dasgupta, T. Dietz,A.K. Duraiappah, R. Hassan, R. Kasperson, R. Leemans, R.M. May, A.J. McMichael, P. Pingali, C. Samper, R. Scholes, R.T. Watson, A.H. Zakri, Z. Shidong, N.J.Ash, E. Bennett, P. Kumar,M.J. Lee, C. Raudsepp- Hearne, H. Simons, J. Thonell and M.B. Zurek, Eds., 2005: Ecosystems and Human Well-being: Synthesis. Island Press, Washington, District of Columbia, 155 pp.
40. Rowe, J. S. (1961). “The level-of-integration concept and ecology,” Ecology 42, 420-277.
41. Rowe, J. S., and Barnes, B. V. (1994). “Geo-ecosystems and bioecosystems,” Bulletin of the Ecological Society of America 75, 40-41.
40. Samant, S. 1999. Prioritization of biological conservation sites in India wetland. pp. 155-167. In: Shekhar Singh, A.R.K. Sastry, Raman Mehta & Vishaish Uppal (eds.). Setting Biodiversity Conservation Priorities for India. World Wide Fund for Nature, India.
42. Sasmal, S.K. & P.L.N. Raju. 1996. Monitoring suspended load in estuarine waters of Hooghly with satellite data using PC based GIS environment. In: Proceedings of National Symposium on Coastal Zone Management. Feb. 25-26 Behrampur University, Behrampur, Orissa.
44. Semlitsch RD and RD Brodie 1998. Are small, isolated wetlands expendable? Conservation Biology 12:1129–1133.
45. Seshamani, R., T.K. Alex & Y.K. Jain. 1994. An airborne sensor for primary productivity and related parameters of coastal waters and large water bodies. International Journal of Remote Sensing 15: 1101-1108.
46. Smith, L.C., Y. Sheng, G.M.MacDonald and L.D. Hinzman, 2005: Disappearing arctic lakes. Science, 308, 1429.
45. Stern, N., 2007: The Economics of Climate Change: The Stern Review. Cambridge University Press, Cambridge, 692 pp.
48. Tansley, A. G. (1935). “The use and abuse of vegetational concepts and terms,” Ecology 16, 284-307.
47. Winder, M. and D.E. Schindler, 2004: Climatic effects on the phenology of lake processes. Global Change Biol., 10, 1844-1856.
50. Zalakevicius, M. and S. Svazas, 2005: Global climate change and its impact on wetlands and waterbird populations. Acta Zool. Lituanica, 15, 215-217.
51. Zheng, X., Z. Zhou, Y. Wang, J. Zhu, Y. Wang, J. Yue, Y. Shi, K. Kobayashi, K. Inubushi, Y. Huang, S.H. Han, Z.J. Xu, B.H. Xie, K. Butterbach-Bahl and L.X. Yang, 2006: Nitrogen-regulated effects of free-air CO2 enrichment on methane emissions from paddy rice fields. Global Change Biol., 12, 1717-1732.
I am Imran Ahmad Dar. I have completed my M.Sc. in Environmental Sciences in Kashmir University, India and i am doing research (Ph.D) in the department of Industries and Earth Sciences, Tamil University, India.I am having seven(refreed and peer reviewed) international publications. In addition i have presented three papers in National Symposium/Conferences. Moreover, presently, i am the Editor of the journal- Journal of Wetland Ecology, besides being the reviewer of Journal of Coastal Research and Journal of Hydrology.
4 Facts On Racing Remote Control Cars
If you are already experienced at this past time then you understand why even the mention of racing RC cars can excite you. It is a safe hobby (at least for you), and the excitement level it can provide it just out of this world. If you are among those that have yet to get a feel of what racing RC cars is all about, well – heres your chance to read a bit about the hobby – and it is never too late you know.
1. A wide range
Remote Control cars can be operated froma joystick through wireless communication or radio frequescies. The models of remote control model cars can be as simple as the start – stop variety or as complex as the sophisticated ones that offer the similar manueverability as the real full size racing cars, and everything in between.
2. Its for everyone!
This hobby has got everyone from old to youn to men to women to children interested in it. After all the skills that you require for this cannot be affected by age, as long as you are not a toddler. This is the best thing about RC cars – anyone can enjoy it, as long as speed and strategy do hold your interest.
3. Where to get one?
Well, racing cars models are available widely. You could get some simpler models at toy stores, great models in the hobby stores, and a huge variety online as well. We suggest you buy your racing car model from a local store so you can maybe try it out before you actually pay for it. RC cars are assets that become quite personal to you so you will want to get one that you are most comfortable with. The truth is, the best RC cars are often the most expensive ones. However that does not mean that the most expensive RC car would suit the absolute beginner. The more the controls the harder it is to control the car, and the complexity of the task requires great skill when you consider that everything has to be done in the nick of time. We suggest – if you are a beginner get a simple model and get the hang of it before you move up to something really expensive. You’d be throwing your money away if you ditched the car into a pond you know!
4. Maintenance
Just as with most everything else, RC cars need care and maintenance. You need to take care of these babies just as you would take care of a full sized car, especially if it is the gas powered variety you are using. Timely cleaning, tyre checks and the likes of that will ensure years of enjoyable racing. Keep in mind that your model will require some care that you may not be able to provide yourself. So if you are a beginner, regular pit stops with the supplier will keep your car in top shape.
Abhishek has a passion for Remote Control Cars and he has got some great RC Cars Secrets up his sleeves! Download his FREE 106 Pages Ebook, “Remote Control Cars Inside Out!” from his website http://www.Auto-Whiz.com/477/index.htm . Only limited Free Copies available.
Universe,third Chapter, a Bit Fire of Fertile Plain
There’re greating Rubbish Bases in the small palnet near Double Stars, 200 sq.km. There’re defend power having 50,000 soldiers, and almost 100 thousand workers. It’s one of main bases for deal rubbish of V.Family in the D.S. Military establishment such as tank depots, maintain factory, info-center, etc. and set hundreds of elevators and running cannon systems, it’s with very good battle power. A young officer was directing soldiers to help worker divide or take down a big broken astro-ship. A star train was landing down near young officer. A scientist Got off, he’s Borndear who consultant of nation science and technology. He’s lost a left arm, because one attacked him at youth. Now he is a consultant duty to the rubbishs bases of D.S. Borndear had on safety suit who came to young officer, There’s over dust forg or others, he’s had a wigwag with hand in front of himself, but didn’t see fingers. Dense forg almost overcome the working yard. Workers and soldiers working with feeling in forg. It’s only the robots able to finish task, if they haven’t safety suit in cold and rolling smoking yard. The young officer continued to command,
Borndear had a weak patted officer soldier, and asked,“Captain Waken, would you tell me where’s the astro-ship from?”
Waken replied,“Mr. Borndear, waiting a minute. Frist thing to finish the task.”
Waken was born at poor family in D.S. Depended on his strong will and excellent military tactics in Contract soldier job 10 years. Afterall, joined to V.Family who become a level 5 captain of empire. He’s only commanded thousands of soldiers beated back ten thousands of S.soldiers attacking under great dispanity condition, has rescued a group of war refugee on the sky during one man task too. He’s awarded suggestion medal of D.S., because made a great contribution for environment construction objects of V.Family. He’s official nominated the Top Commander of The Rocks Starfields rubbishs bases by V.Family, and in charge of whole affairs.
There is a full dangerous starfields, many astro-mobster always appear and dispappear?that’s D.S. rebellion-force of activity territory too. V.Family excepted to establish greating rubbishs bases, also were building a large-sized forest section for State Experimentation item. Waken both holding ground and deal with diffend affair of the forest section. If it’s lookless out, possible to became target of public criticism.
2 hours late, Waken went back the command post, dust all over his body. Had a pat dust of coat, then went into the clean system room.
The clean system room use three clean types for body healthy. The first room is cold and heat clean, people can clean body and clothes; the second room is healthy radial clean, people can use the radial quite put and end to unknow virus, bad microbes or other parasite etc; the three room is difference temperature and medication, people can according to conditions one’s self, about suit temperature or healthy medication, to choose suitable method for good health. And kill bad germs grow in difference temperature.
Waken walked into the first room with too impatient, filter water over strong body, to scatter warm in drops or particles. Then went to the second room, the healthy radial were sweepping and scanning on air, his body seems ghost appear or unappear. He’s feeling release and free. Stepped into the third room, easy press personal code in computer, then tuned to room of temperature and medicine gas. Cold feeling flare up.
In the mean time, the computer said alarm,“Waring, waring! Captain Waken, the temperature is above normal, will be restore normal.”
Waken had a deep breathing, then answered,“Mr. Consciousness, thank for your help.”
The computer spoke,“Not at all. Honorific Waken, work data of tomorrow and other information will be submit for you in two hours late.”
“Thank you, Mr. Consciousness.” He’s talked.
Borndear and a commander watching the screen at mean time, the news of civil war in sights. The commander name’s Veten. Sounds or pictures with exciting bedin of antwar billowing around air at command post. Angry people had burning mimic-weapons. Some people exciting standed on the camera lens middle, and violence dissatisfied criticisming. Some people even do many quizzical acts. They’re faces wore a somewhat quizzical almost impertinent. Some people were exerting strength to throw things to riot police, some civil war supporter abuse to antwar people, then up to force. Rows, streets, scenes, every almost confusion everywhere, fire sky.
Waken walked out the clean room, he’s wonder asked,“What’s matter, It’s so busy? Everyone looks like exciting.”
Veten talked,“There’s I told you civil war of empire affairs last time, many starfield people are acting antwar bedin as. But on my standpoint, these acts useless, only show people’s look and thinking to the empire premier at war. Impossibility to war decision.”
Borndear talked,“No matter what’s side in war that make of very serious influece. But sometimes use force who straight way.”
Waken smile spoke,“With reason, howerver, war will work to fatal personnel casualty or loss. But I thinking that isn’t the best straight at a point.”
Veten talked,“So,Captain.What’s a good idea?”
Waken thought a litter time, then talked,“Temporarily, I haven’t. you can ask me again when I bethinked.”
Brondear watching and saying,“Onhogo should going on the way that time.” Veten asked,“I have a thing no understood, Why Onhogo going to Universe Empire Star battle without you? Captain is a First-rate battle expert in my mind.”
Waken have no alternative spoke,“He’ve a lot of lion-generals, What’s ability to me? No kidding.”
One soldier come in, and saluted, then reported,“Captain Waken, there’s have a remote antiquity battleship was delivered, please order.”
Waken had a little impatient replied,“Set the remote ship to artificial gravitation field, avoid last case begin again. Then deal with thus tomorrow.”
The soldier power responded,“Yes, Captain!”
Borndear sigh with emotion,“Could you tell me what’s type of ancient ship?”
Waken answered,“It should be a trash ship, the type made in G.I.M.E. calendar 1045 y. Ancient empire astro-ship.”
He’s interested in,“Doctor.Waken, could you take me to have a look, may be have somewhat good finding!”
Veten first talked,“He’s an expert, We might discover a pot of Transmutation Stone at the end of the rainbow.”
Waken watced clock, 62:45 second day, March, G.I.M.E. new Calendar 5030. then answered,“In this case, we’re going to.” He’s pressed a calling system, a soldier came in.
Waken ordered,“Tank ready, leave for ancient ship.”
“Yes, commander!” soldier responed.
Bumper-to-bumper tanks were ordered waitting for them outside. V.Family tank?looks like a thick and flat China-fan. When tank?reach to high speed, they’re can close-ground Fly and volplane, through out road block, cross over danger zone. Heavy machine gun installed at front, effective gunshot 3 km. Sides of gun seted emitter gateway that able to S.L.A. (sea,land,air) long distance attack with suit guided missile. Soft and hard crashworthy system, can endure and support very strong crash power, can change bodywork depend on conditions.Tank metal shell are installed Chameleon System that able to change colours on surface in difference environment, heighten camouflage skill and show V.Family of variability character.?
Three persons stepped on Tank who go forward to anchor of the ancient ship. Borndear looked into the distance of rubbishes bases on the way. The bases are builded on a mountain chain, there’re needed to shovel mountainside a year. It’s undifficulty imagine, as these buildings have needed great rich material fling into. Present to great taste because as beehive adhibit surface of small planet in sight. A military unit of G.I.M.E. regular-soldiers motorcade After Moving tanks. Few minutes late, tanks arrived at the ancient ship on time. Waken had seen an engineer was making a reconnaissance the ship.
He’s closing and greeting,“Our engineer, thanks for your working.”
Steborg had a suddenly, and talked,“Never mind, everyone know I’m high on job. Thanks your care.” Then Borndear and Veten followed stepps, they’re talking about this cases.
Borndear knocked at metal shell of ancient ship, was touching, petting, considering about. The ship shape as an ancientry Chinese knive, 500 m.long, 30 ton weight. Ship shell were made up by platinic metal, flashing under sunshine.
Steborg pated dust of body, talked to Waken,“That ancient battle ship mass and stick astro-dust or rocks, grains, I believe it should be dead in an accident of meteorite zone, We should go into and have a look.”
Waken nice and fast replied,“Sure, no problem.” Two soldiers used great effort to open the cabin door 10 minutes, a team of soldiers were being guided cabin by robot.
Waken listened report from soldiers, then turnned to say people,“We can go in.”
The ship isn’t bigger, but command module can contain ten and several human people. Command module is confusion, equipment still good save as new. Waken had groped to find or accomplish something, Steborg continued work, Borndear had a touch per several stepps, his full curiosity of surrounding, as seek out an object that arouses interest, as by being novel or extraordinary. Veten exciting leaded a team of soldiers went around inside. As want to seek out something.
Signal sounds form expsire suit of Waken, he’s opened hand-screen, asked,“What’s up?”
A soldier reported,“Captain, there’s a trade astro-ship under attacking of Astro-Robber in our contronlled C section of star fields. They’re need help, please order.”
Waken spoke,“Start up pilotless aircraft to completely scout B, C, D section of Rocks Starfields in second, ask starfields patrol units go to rescue at accident. The bases must up to guard, strong defense!”
“Yes, commander!” soldier replied.
Veten asked,“We’re whether go back or not?”
Waken said,“Don’t worry, Astro-robber never do out of pocket businesss. There’re rubbishs bases, not the palace. Does notthing to do with life themselves. Otherwise you lead 200 soldiers go back, stay 600 soldiers with me, go.”
Veten received,“Yes, Captain Waken.”
Borndear came to the front, then told,“I asked Steborg, it’s complete know the battle ship that need to spend 2 hours.”
Waken ordered to soldiers,“Holding on defense, follow me to return after 2 hours!”
A soldier reported to him from outside,“Captain, V.Family brigadier QuQing demand communication.”
“Yes, no problem.” Answered Waken.
Brigadier QuQing had dranking fine green tea at home, and talking about civil war of empire cases with Waken. He’s talked again,“I’m so sorry, delay you long time. Bases job must be very hard?”
Waken replied,“No, not hard. Thanks for honour regard. To great responsibility for defense of palace, It’s comparativer than Waken’s cases with worth.” They’re talking about something again.
Some times passed, QuQing continued,“After a week, V.Family will open The family important meeting, I’ll send the information for you tomorrow.” Waken replied,“My pleasure, honour QuQing. I will attendance on time, Good bye.”
A moment late, Steborg had a stretch, and talked,“I have finished the work, we can leave.” Waken then stepped on tank who went back the bases with them ahead of time.
In the one of palace rooms, one warrior had lying comfortable and big bed who looking up sky of window outside. Although epmire have bursted out civil war, but It’s not matter with? It’s only do best my task is enough.
An officer came in, and asked,“Good morning, Mr. Luohu. My master Bianja asked me to remind you must keep those words. On the other hand, the long-voyage combat airship is ready for you. Please to Mr.Luohu depart and Warrant for arrest Goodbingo. We’ll sent the information to your hands at any moment in time.”
Luohu dressed coat, then walked out the room as leisure. Fast step in long-voyage combat airship. Flew to blue sky with a swoosh, disappeared in people’s eyes.
Yesterday, Luohu walked along a long hall way who then came in Kue office. Walls of office full puted materail or information, Kue was siting at the center of room. His flying-chair took him to take some information. No a point of diffence face before. Sly eyes, tine-knife face, a wisp mustache grow at chin, Luohu distinguish him from a look.
He’s knocked at the door, opened mouth,“L.Colonel Kue, I’m Luohu, What’s job do you find me?” Kue put down the information and returned the chair, happy to talk,“Hey~, Mr.Luohu, your arrived, please sit down, don’t metion.”
Luohu sat down with a rush, his hand fingers slight had a point to office table. Then had a little neck act, side-face talked, “The criminal had handed to location police last time. What’s task? How many rewards?”
tastily spoked from Kue,“Don’t hurry, and don’t worry. I believe this task will be accomplish on your great power such be, Mr. Luohu. But… the task concerning many thing, important thing, great thing. So the end time should be fast. And of course the money will doubling for you. Let me a think, a! have 500,000 E.coin. Listening, five hundred thousand Coin. Al! I don’t worry about my life, such as firewood, rice, oil, salt, soy, vinegar, tea if belong to me. But it is a pity that I haven’t your skills.”
“Hum, hum, unsimple task.” Luohu watched and played a few E.coin with hand. Sometimes throwed in air, sometimes held in. bicker grain moving on stars, It’s the most earnestly dream of world forever.
E.coin is small side, flat and round, diameter 1 cm., and 2 gram weight. Main clour gold yellow, main material are mix-made from the firmest metal of Empire. Frontface mark in G.I.M.E. Sword designs. And have 250,000 diffence clour and very microstructure artifical distinguish charts, it needs to use tailor-made sky-high distinguish percentage of microscope radial scanner to clear. Frontside sword of E.coin also can depend on specially conditions that change to all manner of empir sword forms Backside of E.coin are 5,000,000 best heroes, heroines’s image, difference sculpted. E.coin having a direction pointting system, facility to take count in account, and process a limited tail as occasion requires. In addition, G.I.M.E. have check system, energy sources money and others for main currency in the empire, too.
Lunhu laugh said,“What kinds of person worth 500,000 E.coin. go on.”
Kue talked to,“Don’t look down the man, have skills too. He’s name Goodbingo who a professional engage-soldier of U.E.S. A big man’s son was killed in his hands. The big man from X family. Then Goodbingo killed all the prison police at captivity airship after go to the dead execution star field on the way, also hijack the airship. So, he’s unsimple person. I also tell you a thing, 3,000 dead execution prisoners with him. According to intelligence information show, the airship is flying to star fields near Double Stars. If Mr.Luohu can take these criminal! The money Sure belong to you without other. But, in another point of view look, If you can life arrested, you’re very possibility to get appreciation from premier Liyidan. Also have a chance to join empire “War Proof” competition, at one time you will become focus from newspaper, magazine or other medias, then you are great news.”
Kue opened again the screen, his face front eyes: strapping body, vigorous and power hands, feet; brown black hair, his hair is seep in smallness pearl of colour gold and luminous, as galaxy of dark night on sky, especially eyes; stick eyebrow, sharp eyes, high nose, full of fascination lip. Dragon beard of totem temples; favor to soft and comfortable combat armour, usuall carry a travel bag that characterized by intricate and beautiful design or execution, a pair of high speed battle shoes, there’s installing a laser sword system on surface of shoes, He’s born in U.E.S., parents dead when childhood, and relatives unknow; he’s original lived in Human Orphanage of Jieme City, then sent to D.S. and educated in Contract-soldier Lesson While youth, to become a profession Contract-soldier.
Luohu had careful watching Goodbingo’s face on screen, thought about something, talked and asked,“Very qualification, educated from the Contract Soldier Center of D.S. a demon warrior. Well then How many time I owned?” Kue replied,“A month. If above a month, I will send other man to arrest him, such as analogy.” Continue talked,“There’s 10,000 E.coin. according to pass actions. It’s first reward. Because we believe you.” Kue pressed a calling button, a Royalty-guarde put a bag of 20 kg. E.coin in front of Kue on table. Luohu took up the bag, and want to leave.
Kue told him again,“O! Yes! Mr.Luohu, Gonggu said that “War proof”, I’m not say anything, I’m apology. But pleaset to remember again.” Luohu had a smile, answered that,“Thanks, L.colonel Kue.”
A week ago, one captivity airship had flying to the Dead Execution star field. 3,000 more dead prisoners locked up in the airship, including murderer. He’s an engage soldier. Hometown in the U.E.S….
One night, strapping Goodbingo had dressing style back evening wear attendanced friend society party with girl griend, she has multicoloured, quality astro-coat(long winter, shor summer style). She’s a national trade company president’s daughter. Good and high stature, emeralddish and bluish, soldier-high long hair and colour eyebrow, specially obvious times colour. A pair of high speed gymshoes and a suit of seven colour, transmutation Stone and sex body bijouterie that show diffence beauty at diffence surroundings. Goodbingo combed hair himself, then linked her fine hand, went into the party hall of hotel. Many new faces, guests talking, dranking , chating or so.
He’s thought,“She’s social skills very well, fast a lot of people.” A young miss moved toward,“Welcom, welcom, Mr.Goodbingo, dear Tylice.”
Tylice did an alluring lips, then gently puff, pretend to angry,“Congratulation, Gece. A lot of friends again, also open a ceramic company, I don’t know How to thinking.”
Gece smile talked,“Oh, my dear Tylice, how to forget? Wait a minute I’ll introduce my new friends to you, do you like?”
Melting sound from Tylice,“Sorry, I just joking, don’t mind. You’re good friend forever.” Gece low said,“Stealth talk to you, today guests almost from very important people, also have young military officer… Mr.Goodbingo should be watch up your girl friend, she’s so beautiful, If don’t care about, may be a pile of love opponents running in. Hum, hum.”
He’s made an act as not care, then talked,“Really? Where? Where’re they?” Tylice gentle an energize niped on his buns by hand, the pain with a cough, bring breathe out smile from Gece. When they’re happy talking something, a young man had dreessed red and white business suit who leaded several strong bodyguards came to, they look like a big great.
Gece hurry turned, and talked to,“Hey, noble Mr.Kuwi, Welcome here! Come on, let me introduce two good friends for you.”
Kuwi pruriently gaze at Tylice, and talked,“ah~, dear Tylice, How are you?”
Tylice bright eyes suddently became murky gray, rush hid to behind of Goodbingo. Goodbingo consciously block in front of girl friend. Low asked,“What’s happened?” She’s a ghost fear of espression was passing in sights. Little sound,“Kuwi was my neighbor of childhood, he teased me.” Goodbingo seems understood some, smile talked,“We’re very luck see you long time, Mr.Kuwi. By the way, Ms.Gece, I have a friend waitting for me and Tylice, excuse me.”
Gece as understanding too,“All right, waiting for you, have fun.”
He’s a gaze to Kuwi, then they’re made a distance and disappear in his sight, ten and several minutes late, Tylice went to toilet, but the case has started happening. When she went out, a black showing in the way, and emited deep and low voice,“Lovely Tylice, I haven’t seen you some time, you’re growin up beauty.”
“What do you want?!” lightness and style step all of a sudden hurry up.
Kuwi bared up the lewd and cheap face,“Don’t, don’t scare. I’m not a wolf. Do you remember we’re innocent playmates time?” I’m very like you when that time, but pity you moved other place, Hoothoot, I’m so hurt. Today! I finally meet you again! We’re really foreordained of fate, must be god’s plan. We would be better to…” Hands with alcohol gas run out her beautiful face, slender thigh, Tylice promptly moved by exerting force against. Kuwi hasn’t talked all, a straight slap his face. She still as a willow is slender—and equally graceful, equally erect. Kuwi covered left face, gazed at Tylice’s tender white, spring, young skin, as debauchee laugh,“Eh, so good, belove hit, come again.”
Goodbingo is having a chat with people that time. She’s leave a long, therefore decided to find her at outside of toilet then waiting. But the result of picture from the case. He’s very angry, fast came and had fisting Kuwi to swound on the ground. Want to fist again, Tylice speed to hold, and told,“We must go out, this place unsuitable stay for a long time.” Got on the taxi running after they’re fly out hotel. After a little, bodyguards found Kuwi,
Headache Kuwi utterly discomfited and standing shouted,“I swear I never free you, Waitlook!”
Slightly raining air, strangers in a hurry near running car. Tylice inclined her head toward boy-friend’s breast, softly leaned against him, and was considering that how should to deal troubles Kuwi at future. Goodbingo fingering girl friend’s hair, and comforted,“Don’t worry, may be we should looking for one place avoid fire. Listened to landscape of Double Stars not bad, We can have a tour. Right?” She’s soulful looked at dear, with hands to firmly hold his power right hand. Slender talked,“I following you wherever.”
Sudden, fast and furry sweep shoot from back of taxi.“da~da~da~!” taxi back had broken in second. Taxi driver scared, and terrible emergency cried,“Help! Help!”
Goodbingo put the pistol, expertly open the safety lock, light spoke,“Don’t be afraid, I will come back soon.” Then took a good opportunity to welter out running taxi. She’s exclaimed behind, the voice more and more far.
Goodbingo roused active and spirit, fired to the chaseing front wheel of sports car “Phut! phut!” two gunshot, then sports car brushed way and down aside. 2 men rolled down from sport car, a group of gunmen in the wake of other sports cars, the police alarm sound more voice from far place. Cold swind faned city sky, gunmen took weapons, having cap and veil. A balck suit and sunglassess midlife man lead they to shoot, crazy bullets biting around of Goodbingo. He discovered force badly, promptly rolled to left, hid at the corner, again back shoot to gunmen, many gunmen had shot down with voice, but they’re too many, more and more formed to besiege a circle, Goodbingo very dangerous. It’s luck that a police car fast coming on sky, a police tensely used gun aim at gunmen, another police use broadcast system said aloud,“Please attention! Everybody listening to me! We’re patrol police of location. Our reinforce will be fast to here, please calm down, calm down! Put down your weapon, we can manage every problems. I repeat…”
The sunglasses man laugh,“Ya~! That guy such really be I had seen disk of police and thief words yesterday, I’m not fool!” He’s put scattergun and shot to police. Other gunmen firing too, police rush shoot them, one of police called the info-center,“Backup, backup! We need to force! The mobsters have 30 and several, We only several, hurry up!”
A gunman closed to sunglasses man,“Brother! Police force will arrived here in 5 minutes, Should we…”
The man talked,“Fall back, fall back on aim way! With chance to kill that guy Goodbingo when fall back!”
Gunmen answered,“Yes, head.”
Passerby hid and avoided at scene, only gunmen and police shadows moving in the street. Police making fire to gunmen, bullets bursting, cluster, random. Goodbingo took the chance of running, then rode a small car running away. He’s worry girl friend’s safety, must be chase up. Through a street and a street , a familiar of taxi stopped road side. He had seen Kuwi forcing to hold her. He deeply never thought that shoot down Kuwi bodyguards. Kuwi very scared, and pressed Tylice to aside. Then hands up, said aloud,“I give up, I give up! But, tomorrow I’ll never free you, Fu~aha~, your girl friend’s body very nice! Not bad. Eh~, ah~~.”
Goodbing looked at confusion wear of Tylice, obvious marks.
He’s angry and blood eyes,“Phut, phut, puht…”
Spare bullets beated in Kuwi’s body. Kuwi stared eyes, couldn’t believed the shoot from him as wonder, Never people could dare. He’s slowed lyed down on the road, lying die with little moving, Fishy blood poured out from body’s mouth. Goodbing exhausted, and kneeled on the groud, and deepped breathing and winded. Tylice clashed to him, then firmly held and cried. He’s too, Police car were coming, besieged their… rain even more befor, as complained of ugly of world.
Goodbingo whole bared body, sitting on the presoner bed, and gazed at photo of girl friend. The prison house only 30 square meter. Prison door set laser cote system. If illegal in and out, It would be emanate high temperature, emitting sting ray of laser light. Perfect mointor system at corridor, able to distinguish clear every walker. For the better keeping of Tylice photo, he’s used a tailor-made small winebottle. The small winebottle was made up by transparent green-fiberglass, have definite tenacity. It’s wall of inside put a precious colour fibre photo, can conitnue to pour wine or water after used of special solute tool together photo and winebottle. This little bottle is one and only pocket property, that’s coursed many twists and turned, finally kept up. The capitivity airship never-rest flew to Dead Execution Starfield, difficult foresee, suffering prison life will waiting for 3,000 prisoners. At former, many prisoners were dead, because of couldn’t bear dying prison life in the Dead Excution Starfield.
Goodbingo lying on bed and having Tylice in mind, then insensibly sleeping.
Suddenly, captivity airship as earthquake moving, broadcast system alarmed,“Attention, please to attention! Airship is passing a Thunder Dust Devil Zone.” The airship continued acutely shaking, Goodbingo no attention on the bed still.
And at once he discovered disappear without trace of hand bottle! Fast and hurry jumpped from the bed, then looking for little bottle on the ground. For a long time, found the small bottle had rolled aside of corridor. Goodbingo could not closed to, because of prison door. A robot had passing the corridor,
He’s promptly beseeched him for a help,“Excuse me, honour robot, honour robot! Could you help me to take the little bottle, please, please!”
The robot had a seen to him, then trod down small bottle with foot,“I have not this class of request in the programme.”
Then moving, Goodbingo as mad as wild animals bluster, loudness, the prison room is flickering, suffering in heard, a screen and screen of beautiful fancey along with besmash as degreeing to die. Goodbingo weeping and tremble, suffering heart, Had changing to an angry, a hatred fire flightiness upswing without end. He’s angry kicked the door. Hurried stepps coming from, the door “Zi” opened, two whole armed prison police walked in prison house, loudmouthed with rush,“What! What’s cry! I will throw you out, eat dust of universe if cry again!” And that time, a sharp violent of thunder crul shot captivity airship whom slanted and swagged, people were screaming.
An idea fireing from he’s heart,“Rush, kill them, rush out!”
He’s eyes murderous. Took a shaking chance of airship, small acts beated down police, put on police battle suit, single along to operation module… after a moment, prisoners flood out roomes as tide tidewater, went at other police…
Second day, Goodbingo hijacking captivity airship news blazed Milky Way galaxy, other solar systems. Had a some one stealth smile in the Rocks Starfields. There’s secret hideout of astro-robbers—Dake City. Famous and big astro-robber Dake controlled in this city Who leading privateer fleet is the legalize crime group of Milky Way galaxy. He lighted up a smoke, smile and talked himeslef,
“You’re standard, you’re standard.”
A dark engage-soldier supported another engage solder who went in capacious and comfortable Dake office. Dispiritedly told, “Boss, D.S. normal army helped the trade ship at starfields, the fish gone.”
But Dake Having a buoyant or self-confident air,“Never mind! Never mind. First go back for rest, I will call you if something.”
“Yes, Boss.” They answered,
Sixty minutes ago, the trade ship was flying in the Rocks Starfields that came from Force nation of earth. The passengers were including elder Holen and his son and daughter who went to Double Stars on way. They weren’t expected astro-robber will waylay action at the zone. Elder Hole’s 700 years old, Force nation wisdomer, Stars Map Logic Ecclesiastic higher educator, famous called “Hundred Education” He’s observed to look at planet map of D.S. as looking for a good universe corridor. Lovely daughter Hofi carefully driving, and Hoen mointor to operation system ship of screen, holding in standard effect. Abruptly, a minitype interstellar missile hit to the impulsement module of trade ship that dithering.
Hole thought about,“Why the astro-robber appeard?”
A moment with that words,“Hoen, hurry up send SOS to near starfields!”
Hoen answered,“No problem, my father.”
Hofi talked to dad with a little exciting,“Father, astro-robber destoried left impulsement of ship. Flying speed start to slower, must be seek a repair place.”
2 interstellar fighter plane again shot as slam. Information screen showed masked robber, “Step in our fileds, quickly give me the money.”
Hole pretended to a face of smile, asked him,“How much is the money?”
Astro-robber laugh, and shouted,“Whole! Hi hi…”
Press closed with moment. Hoen have no idea,“A flock of madmen!”
Flight planes missiled one again, a largeness blast on the same place, then ship speed was slowing. Operation screen fast showed a young officer pictures When asking help failed,
He’s explained,“We’re D.S. empire military of Rocks Starfields, SOS has receipted. Patrol fleet will be arrived, please for waiting.” A sharp of electrolazer bursted back of flight plane when the third missile ready, ten and several battle airships lightning appearance on back of them.
They shocked and loss color on face,“Fall back! Brother.” The flight planes very fast run into meteorolites.?
Hole mopped down cold sweat on head, talked,“Now safety, all right.”
Trade airship landed on the airfield of defend army that armored forces, patrol battle ships, soldiers full control the airfield. Felicitate on mind themselves whole got off the airship. A high, young officer came to them, and saluted,“Good to meet you. I felicitate you on safety, sir. I’m D.S.L.colonel Veten of defending troops in Rocks Starfields. Welcom to Double Stars.”
Ash and blue gown cap was being opened by Hole, then nodded,“Thanks for your help, thanks a lot.”
And Hofi talked,“Because of the underattacking from astro-robber, We need time to repair serious broken ship.”
Veten looked at the nice girl, she’s lovely face and touching eyes, a suit of white metal astro-coat that show sweet for good model. He’ll fell in love with beautiful girl if hadn’t married.
Veten talked to,“We’ll share a place for your repair job, but first let’s checking you airship.”
Hoen spoke,“Sure, father.” Elder Hole answer,“All right, Veten. With check to begin.” A battle tank ran in the airfield. Three people got off and they’re Waken, Brondear, Stebrog who came back form the remote airship.
Waken kindly shook hands with Hole,“Welcome to D.S. I’m Waken, the highest commander of location, they’re my colleagues.”
They’re introduce on another, then wlaked into the meeting room.
Cup of Hole was filled up hot tea by soldier. He’s a little drink who felling green tea aroma seepped in body, lingering fear eliminated all at once. One sip again, then thanked,“I’m so grateful to captain and other people’s help. We’re dead in the Rocks starfields if haven’t you.”
Waken replied,“Not at all, never mention. This our responsibility, elder Hole. By the back way, you’re come from the remote earth as important thing to deal, is it right?”
He’s smile said,“Yes, captain Waken. Else personal reason, we also have an important purpose that establish embranchment of Stars Map Logic Ecclesiastic in the D.S. Nonce, G. people are facing to first strange catastrophe, for end to war fire burning more, for end to slump an abysm with people more. Stars Map Logic Ecclesiastic put almost available material, We’re come to here for tomorrow sky.”
Brondear spoke,“I’m very glad to see you, famous logic exploiter of galaxies.”
He going on,“I’m admire to base tenet of education from Stars Map Logic Ecclesiastic.”
Hoen answered,“Overpraise from your admire, We’re tent to education, because of people mind have extending and improve from education.”
Veten talked,“I’m thinking that education important, economy at the same.”
Brondear told,“You’re right, I think so.”
Veten continued to said,“On the way, I had listened that unstability of earth and planets around, sure?”
Hole smile talked,“Colonel Veten really well know all, very sure. There’re under goodish since the civil war. As, wars had recorded since first human history. We’re only may be one cup of water pour on the hill of befire-woods.”
Waken asked him,“Could you tell me What’s happened when you’re underattack? Do you remember?”
He’s replied,“I haven’t mind to more because I had seen the empire interstellar chart. But my ship computer has noted all procession. I believe ship data will be useful for help.”
Waken thanked,“Thanks for your help and support.”
Hofi one-up talked,“This should be, you saved me, brother and my father.”
Hofi’s eyes gazed at the handsome man. One suit of silver-gray military officer, suggestions decoration of D.S. on left arm that show his full of wisdom. As Cupid arrow blew in heart, fall in love with young officer, Waken. Hoen thought out sister’s unusual act. With right handed to a press her arm. Hofi woke up a little gaffe, turnned see another place.
Waken kept up,“On the case your trade ship should be repair a week at least. After a week, I’ll present to V.Family important meeting, would you want me to drive on way?”
Hole said,“With so pleasure, thanks captain.”
Knocking on the door outside, pretty voice,“Captain Waken is here?”
Waken answered,“Come in.”
A nice young girl walked in the office. She had on purel-white space suit, floss cap didn’t cover fine hair. She dressed down the coat in minute, showed up the purel one-piece dress that low-chesty and intimate style?slow spoke,“Why so hot?”
Waken smile talked,“I’m so sorry, allow me to introduce my personal physicaltherapy master, Ms. Xingmei.”
She’s smile talked,“Sorry to trouble you, your nice.” A sight dropped on Hofi, intuition told her have carry weight from the girl at future. Xingmei hurry drawed apart with Waken because big or small question who afrair love will be fly out.
Xingmei had a bit tweaked Waken’s arm, then small voice,“My Waken, Who’s that beautiful sister?”
He’s smile and answered,“She’s edler Hole’s daughter Hofi. What’s wrong?”
She’s asked again,“She’s love competitor in woman’s intuition.”
Waken returned,“You may be not enough confidence oneself in my man experience.”
Xingmei coquetry said,“I didn’t care what or some what, you need to tell me who beautiful.”
Waken seens realized,“You’re very beautiful, she too.”
He’s suddenly felt up her sunshiny face as become clouds more. Rush renew,“No! of course not. I’m joking. You’re beautier than her.”
Xingmei happy talked,“Thank you.”
Then talked more,“Reach hand.”
Waken asked,“Why should I reach my hand?”
She’s annoy talked,“I want to help you physical therapy acts, come on.”
Waken asked,“What time is it. We have guesters, after one, waiting for me at room, we could be continue talking about.”
Waken got a hump on eyes to Veten, He’s smile said,“What are you doing? We’re talking about the cases. Don’t manner such, difference armyman’s way.”
Waken speedily returned and talked,“My brother Veten speak out my heart words, I have words talk to elder Hole. Excuse me, you should go back room.”
Xingmei plumped up the mouth, and went back the room.
Brondear continued,“Where’s words? We would be talking the cases.”
Hofi sat, then saw them, realised what’s tastes in mind.
She’s thought,“I’m better than her, take chance of closing.”
She’s brother hoen gazed at young and white skin, beheart fire back, swallowing saliva. Sister pressed to brother with hand too, he’s woke up and smile. Other people still having a chat or so, no one find unusual colour on their faces.
Sunshine throught out the cloud stones, then shine in the Rubbishs bases, soldiers suit apparence effulge on armous. A small team of empire soldier had passing channel of hill, they’re didn’t discover serveal shadows moving at sunless hill channel who steal visit to great rubbishs bases.
One of shadows steal talked,“Brother Flolamp! Couldn’t close up the great rubbishs bases, this’s very damage.”
Flolamp acted big steel teeth, thought about,“Elder send me to scout here with reasons.”
He want to continue toward, a soldier sudden high shouted,“Who’s there!?”
Flolamp had knew fail to hide. Empire soldier is shot down when he want to say again. A team of soldiers up to there, and savage shot to him. Flolamp put out mini bomb at pocket, fast threw out.
“Bomb~cha!”
Suffering soldiers lying down. They’re hurry rode small cars running quickly. Bases airplane, army came to, Flolamp already ran into an air, only leaved behind serveal soldiers’s bodies.
Flolamp went back to the secret base of Natureism with small car. Dressing Natureism traditonal warrior short battle suit. Got off the car with leisure, at moment that stretching full muscular arms. Breast’s muscle and ventro-muscel following moving arm dithering. Wounds was bright flopping on the body or face. It’s rode a long time in long distance, then with warm up sports would be eliminate tire and good acts.
A team of Natureism closing,“Brother Flolamp, elder inviting.” Tall and strong team of headman talked to him.
He stopped and answered,“Ok, this go!”
Long time go, Natureism have begun to war V.Family since. Who don’t know war began with what’s reason , may be someone know at future. Nowaday, Natureism, some of human, other underoppressive nations against to V.Family for real freedom, even for control in D.S. They’re good at battle who Natureism buidled a secret military base because flying guerilla. Ring Mountain Zone very vast area, enough 760,000 sq.km. Ring Mountain difference, some as a vase standing on the Ring Mountain, some as broke bowl with some water, some as feetprint of giant, some as great spiral snake, some as character english letter ‘O’, all kinds of strange things, layer upon layer, ring upon ring.
The military base was builder in the wide mountain chain, because good camouflage, more nature-blocks, brought about undiscovered. Dia 10 kilometre of ring mountain all over Natureism gun towers, N.fighter planes interluding near canyon of ring mountain. And around many ring mountains zone. They’re set up roadbocks or patrol every main road, exit. If unknow this landform, impossibility safety come or out.
Flolamp had a saluted,“Elder Tker, Flolamp have finished the scout and come back.”
Short Tker answered,“Good, good job, Natureism hero is no doubt.”
Flolamp talked,“According my know, there’s in charge of Waken, he’s new defense commander. Greats rubbishs bases still working in rubbishs and recycle material every places. No big found.”
Elder Tker smile told,“Oh, changed to young man, the ex-commander’s ages probably as me. I think that is time to find some time for visit parents or relatives at country.”
At the moment, one Natureism warrior came in the army corps, saluted,“Elder Tker, we’re come back.”
Tall and thin warrior spoke,“We’re came back from astro-robber Dake’s den, It’s said that had a trade airship was rescued by V.Family Who passed the Rocks Starfields. If ture, they’re should be repairing in the bases. Mr. Dake hope capture them, then send. The due is 3 interstellar battleplanes and 2 ton of weapon ammo material.”
Tker slow asked,“Did you ask the reason? Hatmen.”
Hatmen answered,“Yes, I did. But Mr.Dake no replied.”
Tker blinked eyes as understood something, talked,“Thank you, you can back to rest. I’ll call you talking if something.”
Hatmen answered,“Yes, elder Tker.”
He’s a looked at Flolamp, they went out corps after had shaked to battle gown,
Flolamp wonder,“Elder, Tker, that’s…?”
Tker hat pated his hand, talked,“That’s Hatmen, he’s son of deceased gnerral Hadoe. You’re sheepman’s son therefore may be look down you. He usually this manner, don’t blame him.”
Flolamp laugh,“We’re Natureism. Never mind everyone.”
Tker asked him again,“You’re go back here from far Queen Haven yearstoday. I haven’t ask you that what about deatil of there?”
He’s stemly replied,“Queen Haveen grimness as the same of Double Stars. They’re sometimes war because rob treasure material. It’s said that have a new V.Family commander again, so my uncle send me to help you.”
Tker satisfactorily talked,“Taromer is Taromer, I don’t worry about, because you.”
Another Natureism warrior came in from outside again, then reported,“Elder Tker, Waken’s background has found. He’s single who born in poor human family. Father was officer, but now It’s dismissed from his post. Mother is mtermittence madwoman, has living in the psychopathy hospital of D.S. other relatives unknow. Waken depended on individual strong will and wisdom, has working on engage-soldier 10 years long. After, he’s passed the entrance examination of 2G War college who conitune to an advanced studies, now degree Doctor. Waken is assigned to here After graduated. That man have rich battle experience. Creativity very strong.”
Take spoke,“Thanks for your intelligence, warrior Menbeca.”
Menbeca talked,“No thanks, Elder Tker. If no other thing, I should back to rest.”
Tker talked more,“Please wait a moment, come here, I introduce a new warrior for you.”
Menbeca said,“Thank you, elder.”
Tker continued to,“This is warrior Flolamp, come from Queen Haven, aslo Taromer’s nephew.”
Flolamp talked to him,“Not at all with proud, I’m so grateful to admiration. I’m great fortunate to meet you today.”
Menbeca got a look of strong warrior: bright eyes, vigor steel teeth. Teeth-form mustache especially show full of selfhood. He’s began to discover the young will become Natureism future. Both were invited by elder Tker who presence to Natureism dinner party…
Some piles of firewood distributing vastness ground with flaming and burning. Natureism teamheads and some of nation-warriors are together talking about how to gainst V.Family. This is an enormous meeting party, There’re almost people joined. Elder Tker standed up from elderseat, said aloud,“Today, My heart delightm because we can together to against V.Family. Today, my heart affaid, because worry V.Family’s tyranny will unstopping! Eventually, Gods give us an excellent chance. Now! there’re so far Leitibu, great Windom leading 20 galaxies rebellion battlefront, above 7,000,000,000 rebelliion warriors uprising, also have first progressing at win. I believe at the future, at the short time, G.I.M.E. Family of ten, V.Family will be crush on hand!” One tigrish and bear waist warrior was standing, shouted,“Elder right! We must take the chance beat down V.Family.” “Yes!” “Good!” “So nice!” “Wa, very excited! ” “I like thus!” Warriors talking or shouting or aloud. Flolamp and Menbeca were drinked and laughed.
A power warrior had standing with a rush, then shouted,“You! Why laugh? What’s wrong with Tker words? Talk me reason!” Warriors of sides as same.
Elder Tker had a knocked on the kettle with crutch,“Please calmness, calmness!”
People began soudless, but wouldn’t ease dissatisfaction from heart.
Elder Tker asked to Flolamp,“What’s good idea?” Flolamp slow put down the wine cup, standing up then speeched,“At first, I want to thanks elder Tker’s forgive, thank you. I’m apologize for everybody, because impertinence. Then I want to ask the brother, He name’s…? call…? ”
Young warrior shouted,“I’m FlameOx, Natureism warrior teamhead. What about you?”
Flolamp made a manner, talked,“I come from Queen Haven, my name’s Flolamp!”
Crowds in an uproar because Natureism warrior come from Queen Haven must be unsimple.
He continued,“I want to ask brother FlameOx, What’s good idea would be hit down V.Family?”
FlameOx thought a few time, then shaking up arm as elephant, howled,“I first shovel down V.Family defend army, after all wave straight point to Double Stars!” “Yes! Yes! Very good!” people shout again.
Elder Tker knocked again, talked,“Quiet, please quiet, listen to them!”
Flolamp clapped hands and said,“That’s a good idea! But have a question, How to shovel down the defend army? Were we stared up many battles before, but succeed? No! We haven’t succeed! We have brave, but we need to enough patience and wisdom at same!”
Crowds start talking and talking “Right, not bad!” “That’s great!”
Elder Tker asked,“What’s good idea from you?”
He’s gentle and slow walked out the seat, near the pile fire.
Continue talked,“Bushfighting of Natureism is good play to the government. Force conflict and fury uprising have emerged in endlessly since main battle of empire attacked and defensed. In order to inner or outer of territory main projects have showed no idea, even involved, one disaster after another. Battle of military army. The empire depending high-tech power that bring to nicety attacking and high-speed flexibility on successful way. This is main reason why bushflighting group face to face, crossing swords in underattacking with fail. But the empire still face to ghost bushflighting group with no idea, because main reason that guerilla batter than empire in shadow, nationality and religionary power. Military supply line, nicety intelligence are cogent power for battle. If can press these into confusion, destory nicety intelligence work involved, that will be the furthest threats, intimidation, compel to attacking power. So that destory intelligence center, working station, logistics department, supply-line etc. will be greatly hitting enemy’s morale or battle skills. Step more, if would be use effect psychological warfare with actions, better going gainst battle to pull down empire regimes every galaxies!”
Elder Tker a nice noded, Natureism warriors began a look to his strong body, but unsimple head Flolamp. Flolamp fast put up a big cup, then step and step closing pile fire. Warriors sights on his body at same time, bearing flame as mirror on red sun. Flolamp faster step by step to hill pile fire who clothing with sencod emited some piece of white gas. He’s stopped, and never fear eye’s flame, cut airstream, nip sparks.
Clap, clack, crack had following he didn’t stop wiggly dance postures as loudness song.
Warriors filled with admiration.,convulsion because very courage and deathless will.
Flolamp shouted like a lion, flame afraid and drew back.
Firewater threw into center of hill fire, flame started upswing again. He turned back to warriors with safety. Open big mouth, hold high fist, said aloud,“We’ll take a cup of fire to V.Family! Let him fire on mad! Burning more!”
Menbeca standing, threw out cup of hand too,“Great! Sounds great!”
Elder Tker smile with pleasure,“Right! Such this!”
People cried out,“We’ll take a cup of fire to V.Family! Let him fire on mad! Burning more! Speed them to die! Speed die! burning! …” insanely cried or called, FlameOx touching heart.
He’s cried,“Brother Flolamp right, Let V.Family ruin flame on mad, on burning!”
Hatmen still siting on one side, quiet and kept silence to drink alone. Analysed every people, his minded,“That Flolamp really man. May be strong opponent!”
A Naturesim battleplane landing on ground near pile fire, pilot hold the messages box, with honor on heart,“I’m Natureism warrior Tatajanmen from D.S. Elder Hesuner send me to here for deliver the messages box, also called me to give you an oral. We have united D.nation, Die-hard nation, some of human , and some other nations to dark armies, We’ll uprising at apointed date. Please Elder Tker send units for union battle!”
People cheering again, ring mountain as shout on sky including inside and outside. Menbeca words in head,“My tactics of bushfighting good happen to D.S.”
Exciting people took fire brand shaking and shaking as countless firebug have glitter in far places. One empire airplane thought out near sky…
In the bases, Waken bargaining works with other worker.
A soldier closed to him,“Captain, Natureism base has found, please order.”
Waken answered,“Thank you, my responsibility for defend bases. As for Natureism secret base, they’re usually changing places, no meaning in found. Send the report to Universe eyes center, nature have somepeople deal with.” Soldier answered, “Yes, captain!” at the U.I.E.C., thoudands of officers were checking, approving a lot pile of information, one intelligence officer has browsing a data, Universe Empire Star Warfare Presenting Unclarity…
Nitro Remote Controlled Car
Remote control cars are considered toys for big boys. But the truth is, kids and adults from both sexes can enjoy the thrill of controlling a mini-machine with much power like a nitro remote-control car. Any RC car enthusiast can choose among a wide array of car models, from Ferraris to Lamborghinis and Porsches.
Nitro RC cars are different from ordinary RC cars in that they are built for speed of more than 75 mph. Therefore, these cars are perfect for racing indoors and especially great for racing outdoors. However, because of the speed, it is not an RC car designed for beginners. Only experienced racers will enjoy this type of RC car.
Remote control cars, when delivered, come assembled and are ready to use. They are usually electrically-powered but there are also those that are gas-powered, like the nitro RC cars that are run on nitro methane gas.
Nitro RC cars have many intricate parts that are seen in real cars. Some parts include air filters to prevent the entry of dirt in the engine, gears that transfer power from the engine to the car’s transmission, and carburetor adjustment screws to control the idling speed. It also comes with a pull start mechanism just like the ones found in lawn mowers. There are many other parts that make up the complex design of a nitro RC car that are too many to mention.
The enjoyment of the nitro RC car comes in the ability of the user to do precise movements with the aid of the remote control. The steering of the car can be done gently or aggressively, depending on the call of the situation. Acceleration can, likewise, be controlled. Going from zero speed to full-speed can be done with the remote control just like in real race cars in a matter of seconds.
But of course, as it is with all kinds of machines, wear and tear can take its toll on nitro RC cars. Errors and problems may occur anytime before, during and after its run. Don’t forget that with great speed may come many damages to your RC car. You and you alone will know if something has gone bad just by looking at the way it runs. Make sure, at all times, that you double-check your car before hitting the tracks especially with your nitro RC car.
The most important thing to check on would be the engine. If the car suddenly stops at mid-run, there could be a problem with the engine. You may have to replace the piston sleeve of your engine. Usually, the changing of type of fuel can have a negative effect on the general performance of your car. Therefore, it is imperative that you have a good observation of changes in smoke and engine sound.
When buying the fuel for your car, make sure you buy the fuel especially for RC cars.
Fuel for nitro RC cars is a combination of methyl alcohol, lubricants and nitro methane.
More nitro content in the fuel gives the car more power. These cars are usually more expensive. A good start would be 10% nitro. More advanced users can do well with 20% nitro.
Having some background on nitro RC cars is a must for nitro RC car owners. You should be aware of the power this little machine can generate and how it does that. Trouble shooting will not be possible if you do not know anything about the parts and their functions. If I were you, read more about this special power remote control car.
Robert is the webmaster of Nitro Remote Controlled Car website. Remote control cars are considered toys for big boys. But the truth is, kids and adults from both sexes can enjoy the thrill of controlling a mini-machine with much power like a nitro remote-control car. Any RC car enthusiast can choose among a wide array of car models, from Ferraris to Lamborghinis and Porsches.