Encyclopedia : P : PY : PYK (5 articles)

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Pyknosis
Pyknosis, or karyopyknosis, is the condensation of chromatin in the nucleus of a cell undergoing programmed cell death (see Naoufal Zamzami and Guido Kroemer: "Apoptosis: Condensed matter in cell death", Nature Vol. 401 p. 127, 9 September. 1999 [link]). It is followed by Karyorrhexis, o..
Pykrete
Pykrete is a composite material made of approximately 14 percent sawdust or some other form of wood pulp (such as paper) and 86 percent ice by weight. The properties of such a composite were apparently first noted by a couple of researchers at New York Poly, and were investigated more thoroughly by ..

 

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