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Cetacea (/ s ɪ ˈ t eɪ ʃ ə /; from Latin cetus 'whale', from Ancient Greek κῆτος () 'huge fish, sea monster') is an infraorder of aquatic mammals that includes whales, dolphins, and porpoises.Key...
An oxygen concentrator is a device that concentrates the oxygen from a gas supply (typically ambient air) by selectively removing nitrogen to supply an oxygen-enriched product gas stream. They are...
The microscopic pores present in agarose gels act as a molecular sieve. Samples of DNA can be loaded into wells made in the gel during molding. When an electric field is applied, the DNA molecules...
molecular: [adjective] of, relating to, consisting of, or produced by molecules....
The 5A molecular sieve is an alkali metal aluminosilicate with an effective pore opening of 5 angstroms and is the calcium-exchanged form of the type A zeolite. The strong ionic forces of the...
In free solution the two effects would cancel out, but in the mesh of the polyacryl-amide gel, which acts as a molecular sieve, large proteins are retarded much more than small ones. As a result, a...



