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Caltech scientists have found a fast and efficient way to add up large numbers of Feynman diagrams, the simple drawings ...
The chemical is bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate, also called BTMPS, which is in a group of chemicals called hindered amine light stabilizers. BTMPS is usually added to plastics, ...
Buried for 209 million years, a tiny flying reptile and its ancient neighbors just emerged from Arizona’s Triassic past.
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