Pumped hydroelectric and compressed air energy storage (CAES) are currently economic for utilities when relying on natural geologic formations and the cheapest, most abundant substances (i.e. elevated water and compressed air). In these situations the cost of energy storage capacity can be very low (<$5/kWh1) Unfortunately the scale and location-specific nature of energy storage in natural formations is likely to render it of limited benefit to small scale distributed renewables. Available pumped hydro and CAES capacities could prove small in r ....etc

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1. INTRODUCTION
Material handling plays an very important role in the industrial economy. Mass production depends mainly on conveying system and expansions is mass production invariably follow developments in method of handling the materials involved. The material handling is a system or combination of methods, facilities, labour and equipment for moving, packaging and storing of materials to meet specific objectives. Materials handling is increasingly being recognized as a primary tool for improving productivity. Nearly ....etc

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High air pollution in terms of particulate matter, SO2, NO2 etc has been observed from the rapidly urbanized cities. This is the most issuing problem for the environmental planners and scientists. The conventional approach of air quality status planning is generally achieved within four phases, namely monitoring, modeling, development and finally execution. Monitoring is achieved by integrative sampling; grab sampling, and passive sampling. But previous studies show that conventional approach to assess the pollution level are not efficient. Sin ....etc

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The chemical process industries are facing increased regulation of hazardous air pollution. Air pollution control has emerged over the past 40 years as a significant industrial sector. Outgas emission control has become an overall pervasive technological problem, that is further complicated with legislative imperatives and demands of the market place. It is already clear that the industry requires efficient, affordable solutions that are also technology and configuration specific. Bio treatment of contaminants in air streams offers an inexpensi ....etc

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Definition

Have you been to the gas station this week? Considering that we live in a very mobile society, it's probably safe to assume that you have. While pumping gas, you've undoubtedly noticed how much the price of gas has soared in recent years. Gasoline which has been the main source of fuel for the history of cars, is becoming more and more expensive and impractical (especially from an environmental standpoint). These factors are leading car manufacturers to develop cars fueled by alternative energies. Two hybrid cars took to the road ....etc

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ABSTRACT
Air muscle is essentially a robotic actuator which is replacing the conventional pneumatic cylinders at a rapid pace. Due to their low production costs and very high power to weight ratio, as high as 400:1, the preference for Air Muscles is increasing. Air Muscles find huge applications in biorobotics and development of fully functional prosthetic limbs, having superior controlling as well as functional capabilities compared with the current models. This paper discusses Air Muscles in general, their construction, and principle of oper ....etc

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Detection of corrosion damage in aircraft wing skin structures is an ongoing NDT challenge. Ultrasonic methods are known and well-accepted techniques, which are relatively simple to carry out in terms of setup, probes and instrumentation and operator training. However, with conventional inspection from the top surface using a transducer at normal incidence (0o to the normal to the surface) producing a visual picture in the form of a C-scan, it is very tie consuming to point-by-point inspects large aircraft wing skin areas. In addition it is too ....etc

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