free radicals


free radicals
 Free Radicals
 Свободные радикалы
  Частицы с неспаренными электронами на внешних атомных или молекулярных орбиталях. Парамагнитны и реакционноспособны. Вступают в различные химические реакции. Могут быть стабильными, или долгоживущими и нестабильными, или короткоживущими. Образуются из молекул под действием электромагнитного излучения, потока частиц высоких энергий, при нагревании, в ходе окислительно-восстановительных реакций. Свободные радикалы могут повреждать молекулярные механизмы биологических систем, что ведет к образованию поперечных сшивок и мутациям.

Толковый англо-русский словарь по нанотехнологии. - М.. . 2009.

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  • Free Radicals (band) — Infobox musical artist Name = Free Radicals Img capt = Img size = Background = group or band Alias = Origin = Texas, USA Instrument = Genre = Funk, Ska, Klezmer, World Music, Years active = 1996–present Label = Associated acts = Pretentious… …   Wikipedia

  • Free radical (disambiguation) — Free radical is a chemistry term that describes an atomic or molecular species with unpaired electrons on an otherwise open shell configuration. The term may also refer to one of the following.Chemistry*Free radical addition An addition reaction… …   Wikipedia

  • Free-radical (culture) — Free radical, is a term regarding a sub cultural trend, originating in the early 21st century.The Free radical movement is part of a new trend being observed in the 21st Century. Members within this group identify themselves as “Free radicals”.… …   Wikipedia

  • free radical — free radicals N COUNT: usu pl Free radicals are atoms that contain one or more unpaired electrons. Free radicals are believed to be a cause of ageing, heart disease, and some cancers. [TECHNICAL] …   English dictionary

  • free radical — n technical an atom or group of atoms with at least one free ↑electron, which combines with other atoms very easily ▪ It is thought that free radicals can damage cells …   Dictionary of contemporary English

  • free radical — noun count SCIENCE a molecule that has an extra ELECTRON and can react very easily with other molecules. Free radicals sometimes form in the human body and can cause cancer …   Usage of the words and phrases in modern English

  • free radical — n. an atom or molecule having at least one unpaired electron: free radicals are usually reactive and unstable …   English World dictionary

  • 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 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 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

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