CH activation

CH activation
Any of a wide range of techniques, often using catalysts, in which a carbon to hydrogen covalent bond of an organic compound is made to cleave in order to replace the hydrogen with a functional group.

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  • activation — [ aktivasjɔ̃ ] n. f. • 1910; de activer 1 ♦ Chim. Opération consistant à augmenter les propriétés physiques ou chimiques d une substance (généralement en la soumettant à des radiations). Activation de l ergostérol, du charbon. Biochim. Activation …   Encyclopédie Universelle

  • Activation product — Activation products are materials made radioactive by neutron activation.Fission products and actinides produced by neutron absorption of nuclear fuel itself are normally referred to by those specific names, and activation product reserved for… …   Wikipedia

  • Activation Physiologique — L activation physiologique (dite aussi activation cérébrale ou arousal, importé de l anglais) désigne l état psychophysiologique correspondant à l activation de la formation réticulée activatrice (FRA) du tronc cérébral impliquant le système… …   Wikipédia en Français

  • Activation cérébrale — Activation physiologique L activation physiologique (dite aussi activation cérébrale ou arousal, importé de l anglais) désigne l état psychophysiologique correspondant à l activation de la formation réticulée activatrice (FRA) du tronc cérébral… …   Wikipédia en Français

  • activation — n. 1. the process of making active. Syn: energizing, activating [WordNet 1.5 2. making active and effective (as a bomb). [1913 Webster] Note: certain devices, as bombs or artillery shells, are designed to be unable to operate until a specific… …   The Collaborative International Dictionary of English

  • Activation synthesis theory — is a neurobiological theory of dreams, put forward by James Allan Hobson and Robert McCarley in 1977, which states that dreams are a random event caused by firing of neurons in the brain. This random firing sends signals to the body s motor… …   Wikipedia

  • Activation Neutronique — L analyse chimique par activation neutronique est une méthode analytique très sensible, particulièrement bien adaptée pour analyser la pureté d un échantillon. La méthode consiste à irradier un échantillon par un flux de neutrons. Les différentes …   Wikipédia en Français

  • Activation-Induced (Cytidine) Deaminase — (AID) is a 24 kDa enzyme that removes the amino group from the cytidine base in DNA.AID is currently thought to be the master regulator of secondary antibody diversification. It is involved in the initiation of three separate immunoglobulin (Ig)… …   Wikipedia

  • Activation — Activation. См. Активация. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • Activation energy — Activation energy. См. Энергия активации. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • Activation corticale — ● Activation corticale excitation des neurones corticaux et sous corticaux par l intermédiaire d un stimulus quelconque …   Encyclopédie Universelle

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