What are generators?

An electric generator, as the name implies, is a device designed to generate electricity, generally used to power other equipment in places where…
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Gasoline Engines: The History of OHV Technology.

Starting in 1983, the OHV system (valves in the head) was the result of a 3-year research and development work. Engineer Yonekazu Uetsuji…
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River transport: the life of riparians in northern Brazil.

Approximately 12% of the planet's surface fresh water flows in Brazilian rivers. The Amazon region, for example, holds the largest river basin in…
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