activation addition

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• Activation energy — In chemistry, activation energy, also called midnight energy, is a term introduced in 1889 by the Swedish scientist Svante Arrhenius, that is defined as the energy that must be overcome in order for a chemical reaction to occur. Arrhenius… …   Wikipedia

• Activation function — In computational networks, the activation function of a node defines the output of that node given an input or set of inputs. A standard computer chip circuit can be seen as a digital network of activation functions that can be ON (1) or OFF (0) …   Wikipedia

• activation — (of egg) Normally brought about by contact between spermatozoon and egg membrane. Activation is the first stage in development and occurs independently of nuclear fusion. The first observable change is usually the cortical reaction that may… …   Dictionary of molecular biology

• Carbon–hydrogen bond activation — or C−H activation may be defined as a reaction that cleaves a carbon–hydrogen bond. Often the term is restricted to reactions involving organometallic complexes and proceeding by coordination of a hydrocarbon to the inner sphere of metal, either… …   Wikipedia

• C-H bond activation — Carbon hydrogen bond activation or CH activation may be defined as a reaction that cleaves a carbon hydrogen bond. Often the term is restricted to reactions involving organometallic complexes and proceeding by coordination of a hydrocarbon to the …   Wikipedia

• Windows Product Activation — is an anti piracy measure created by Microsoft Corporation that enforces the Windows EULA (End User License Agreement) and/or other license agreements.If the Windows operating system is not activated within a limited period of time, it will… …   Wikipedia

• Macrophage-activation syndrome — (MAS) is a severe, potentially life threatening, complication of several chronic rheumatic diseases of childhood. It occurs most commonly with systemic onset juvenile idiopathic arthritis (SoJIA), which is also known as Still s disease. In… …   Wikipedia

• Neutron activation — is the process in which neutron radiation induces radioactivity in materials, and occurs when atomic nuclei capture free neutrons, becoming heavier and entering excited states. The excited nucleus often decays immediately by emitting particles… …   Wikipedia

• Oxidative addition — and reductive elimination are two important and related classes of reactions in organometallic chemistry.[1][2][3] Oxidative addition is a process that increases both the oxidation state and coordination number of a metal centre. The oxidative… …   Wikipedia

• The Society for the Activation of Social Space through Art and Sound (SASSAS) — is a 501(c)(3) non profit organization that serves as a catalyst for the creation, presentation, and recognition of experimental art and sound practices in the Greater Los Angeles area.SASSAS members are dedicated professionals interested in the… …   Wikipedia

• endocrine system, human — ▪ anatomy Introduction  group of ductless glands (gland) that regulate body processes by secreting chemical substances called hormones (hormone). Hormones act on nearby tissues or are carried in the bloodstream to act on specific target organs… …   Universalium