negative reactivity

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• Negative affectivity — Negative Affect (NA) is a general dimension of subjective distress and unpleasurable engagement that subsumes a variety of aversive mood states, including anger, contempt, disgust, guilt, fear, and nervousness. Low negative affect is… …   Wikipedia

• Negative temperature coefficient — A negative temperature coefficient (NTC) occurs when the thermal conductivity of a material rises with increasing temperature, typically in a defined temperature range. For most materials, the thermal conductivity will decrease with increasing… …   Wikipedia

• Reactivity–selectivity principle — In chemistry the reactivity–selectivity principle or RSP states that a more reactive chemical compound or reactive intermediate is less selective in chemical reactions. In this context selectivity represents the ratio of reaction rates. This… …   Wikipedia

• Reactivity (psychology) — For other uses, see Reactivity. Psychology …   Wikipedia

• negative anergy — transient reduction in reactivity to allergens in a sensitized individual, occurring as a result of intervening events, such as cachexia …   Medical dictionary

• Positive Affect Negative Affect Scale — The PANAS is a scale measuring emotions (PANAS = Positive Affect Negative Affect Scale). The emotions measured can be general and also specific ones (i.e. at a cretin moment or event). Therefore, the PANAS can be used to measure emotions in the… …   Wikipedia

• Neutron poison — For information on biological effects of excessive ionizing radiation, see radiation poisoning. A neutron poison (also called a neutron absorber or a nuclear poison ) is a substance with a large neutron absorption cross section in applications,… …   Wikipedia

• Nuclear poison — A nuclear poison, also called a neutron poison is a substance with a large neutron absorption cross section in applications, such as nuclear reactors, when absorbing neutrons is an undesirable effect. However neutron absorbing materials, also… …   Wikipedia

• SL-1 — The SL 1, or Stationary Low Power Reactor Number One, was a United States Army experimental nuclear power reactor which underwent a steam explosion and meltdown in January 1961, killing its three operators. The direct cause was the improper… …   Wikipedia

• Pressurized water reactor — (PWRs) (also VVER if of Russian design) are generation II nuclear power reactors that use ordinary water under high pressure (superheated water) as coolant and neutron moderator. The primary coolant loop is kept under high pressure to prevent the …   Wikipedia

• Advanced CANDU Reactor — The Advanced CANDU Reactor (ACR) is a Generation III+ design and is a further development of existing CANDU reactors designed by Atomic Energy of Canada Limited. It is a light water cooled reactor that incorporates features of both Pressurised… …   Wikipedia