oxygen free radical

свободные радикалы кислорода
* * *
свободный кислородный радикал
атом кислорода, содержащий избыточное количество электронов, являющийся потенциально опасным для тканей организма

English-Russian Biotechnology Glossary. . 2007.

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  • Free radical addition — is an addition reaction in organic chemistry involving free radicals [L.G. Wade s Organic Chemistry 5th Ed. (p 319) Mechanism supplements original.] . The addition may occur between a radical and a non radical, or between two radicals.The basic… …   Wikipedia

  • Free-radical theory — The free radical theory of aging states that organisms age because cells accumulate free radical damage over time. In general, a free radical is any atom or molecule that has a single unpaired electron in an outer shell. While a few free radicals …   Wikipedia

  • Free Radical Centre — The Free Radical Centre or ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, was established in the 2005 Australian Research Council funding rounds. It is administered from the University of Melbourne, and has nodes at five… …   Wikipedia

  • Free radical halogenation — In organic chemistry, free radical halogenation is a type of halogenation. This chemical reaction is typical of alkanes and alkyl substituted aromatics under application of heat or UV light. The reaction is used for the industrial synthesis of… …   Wikipedia

  • Free radical reaction — A free radical reaction is any chemical reaction involving free radicals. This reaction type is abundant in organic reactions. Two pioneering studies into free radical reactions have been the discovery of the triphenylmethyl radical by Moses… …   Wikipedia

  • free radical — noun an atom or group of atoms with at least one unpaired electron; in the body it is usually an oxygen molecule that has lost an electron and will stabilize itself by stealing an electron from a nearby molecule (Freq. 2) in the body free… …   Useful english dictionary

  • free radical — A highly reactive chemical that often contains oxygen and is produced when molecules are split to give products that have unpaired electrons (a process called oxidation). Free radicals can damage important cellular molecules such as DNA or lipids …   English dictionary of cancer terms

  • Living free radical polymerization — is a type of living polymerization where the active polymer chain end is a free radical. Several methods exist. IUPAC recommends[1] to use the term reversible deactivation radical polymerization instead of living free radical polymerization .… …   Wikipedia

  • Radical (chemistry) — Free radical redirects here. For other uses, see Free radical (disambiguation). Moses Gomberg (1866 1947), the founder of radical chemistry Radicals (often referred to as free radicals) are atoms, molecules, or ions with unpaired electrons on an… …   Wikipedia

  • Oxygen toxicity — Classification and external resources In 1942–43 the UK Government carried out extensive testing for oxygen toxicity in divers. The chamber is pressurised with air to 3.7  …   Wikipedia

  • Oxygen radical absorbance capacity — (ORAC) is a method of measuring antioxidant capacities in biological samples in vitro.[1][2] A wide variety of foods has been tested using this method, with certain spices, berries and legumes rated highly.[3] There exists no physiological proof… …   Wikipedia

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