A Light emitting diodes (LEDs) have gained broad recognition as the ubiquitous little lights that tell us that our monitors are on, the phone is off the hook or the oven is hot semiconductor.

The basic principle behind the emission of light is that: When charge carrier pairs recombine in a semiconductor with an appropriate energy band-gap generates light. In a forward biased diode, little recombination occurs in the depletion layer. Most occurs in a few microns of either P- region or N ?region, depending on which one is lightly doped.

LE ....etc

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dear sir,
i need some detailed information about The design and fabrication of solid fuel making system.

kindly provide me with the required information.

Thanking you ....etc

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The World Wide Web is an architectural framework for accessing linked documents spread out over millions of machines all over the Internet. Currently the World Wide Web has overshadowed all other internet applications. The popularity of WWW is largely dependent on the web search engines. Search engines are the gateways to the huge information repository at the internet. Anyone can quickly search for helpful cleaning tips, music lyrics, recipes, pictures, celebrity websites and more with search engines. Generally an internet su ....etc

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sir,
i m vageesha agarwal of 12th class. i hv pcm+biotechnology.
i have to make a project on solid waste micro flora and bio degradation& i don't know anything about it. ....etc

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In early times, the disposal of human and other wastes did not pose a significant problem, for the population was small and the amount of land available for the assimilation of wastes was large .Now due to rapid population growth and economic development in the country-Solid waste disposal has become a major environmental issue in India. Solid waste, often called the third pollution after air and water pollution, is that material which arises from various human activities and which is normally discarded as useless or unwanted it consists of the ....etc

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i am majnu. i want all information about SLOW PYROLYSIS OF KIKAR FOR GENERATION OF SOLID, LIQUID AND GASEOUS FUELS project plese give me the information ....etc

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In early times, the disposal of human and other wastes did not pose a significant problem, for the population was small and the amount of land available for the assimilation of wastes was large .Now due to rapid population growth and economic development in the country-Solid waste disposal has become a major environmental issue in India. Solid waste, often called the third pollution after air and water pollution, is that material which arises from various human activities and which is normally discarded as useless or unwanted it consists of the ....etc

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INTRODUCTION
Solid freeform fabrication (SFF) encompasses a class of processes that can be used to design and construct parts using a layer-additive approach. SFF processes are an outgrowth of rapid prototyping processes such as stereolithography for plastics and welding repair techniques employing laser, electron beam, or arc welding for repairing metal seal knife edges, turbine blade tips, or tooling dies. Current development efforts are expanding these repair techniques and applying principles from ....etc

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SOLID WASTE MANAGEMENT 0N INDIA

India’s Population = 1027 Million
As per 2001 Census


Urban Population = 285 Million


Urban Areas = 5161
(Cities / Towns)


TREND OF URBANIZATION

Year Year Year Year
1951 1991 2001 2021

1. Number of Urban 2795 3768 5161 --
Agglomerations / Towns


2. Urban Population 62.0 217.0 285.0 550.0
(in million)


3. As percentage of total 17.3% 25.72% 27.8% 41%
Po ....etc

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Author: Loren Wyard-Scott

Abstract

Here, students learn how solid state lighting technology can improve the lives of people in the developing world, making their evenings more productive and safer. In the laboratory, the students design a portable, solar-charged, LED lamp that can provide two hours of reading light. In the process, they learn about basic circuits, the engineering design cycle, and light. They also compare the efficiency, durability, and cost of lighting technologies.

For more details
[url=http://realworlde ....etc

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