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The National Stem Cell Bank was established in October 2005 in Madison, Wisconsin in order to serve as a repository specifically for stem cell lines. It currently hosts 13 of the 21 stem cell lines that exist in the world and are listed on the Stem Cell Registry hosted by the National Institutes of Health .
E-bikes are zero-emissions vehicles, as they emit no combustion by-products, but the environmental effects of electricity generation and power distribution and of manufacturing and recycling batteries [62] must be accounted for. [63] E-bikes emit similar pollutants per kilometer as buses, with emission rates several times lower than motorcycles ...
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List of bicycle parts by alphabetic order: Axle : as in the generic definition, a rod that serves to attach a wheel to a bicycle and provides support for bearings on which the wheel rotates. Also sometimes used to describe suspension components, for example a swing arm pivot axle
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This article lists notable electric bicycle brands and manufacturers including electric unicycles.. Many bicycle brands do not manufacture their own product, but rather import and re-brand bikes manufactured by others, sometimes designing the bike, specifying the equipment, and providing quality control.
The term Electric bikes may refer to: Electric motorcycles and scooters; Electric bicycles. Pedelec (pedal electric cycle), electric bicycle where the rider's pedalling is assisted by a small electric motor
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