no observed effect concentration

См. также в других словарях:

• No effect concentration — (NEC) is a risk assessment parameter that represents the concentration of a pollutant that will not harm the species involved, with respect to the effect that is studied. It is often the starting point for environmental policy [Bruijn et al, 1997 …   Wikipedia

• Measures of pollutant concentration — NOEL redirects here. For other uses, see Noel (disambiguation). Measures of pollutant concentration are used to determine risk assessment in public health. Industry is continually synthesizing new chemicals, the regulation of which requires… …   Wikipedia

• Effect of psychoactive drugs on animals — Drugs administered to a spider affect its ability to build a web.[1] …   Wikipedia

• effect — The result or consequence of an action. [L. efficio, pp. effectus, to accomplish, fr. facio, to do] abscopal e. a reaction produced following irradiation but occurring outside the zone of actual radiation absorption. additive e. an e. wherein two …   Medical dictionary

• No observable effect level — NOEL oder NOEC (No Observed Effect Level oder Concentration) ist ein toxikologischer Endpunkt in der Toxizitätsbestimmung. Der NOEL entspricht der höchsten Dosis oder Expositionskonzentration eines Stoffes in subchronischen oder chronischen… …   Deutsch Wikipedia

• Hall effect — For the Colombian band, see The Hall Effect (band). The Hall effect is the production of a voltage difference (the Hall voltage) across an electrical conductor, transverse to an electric current in the conductor and a magnetic field perpendicular …   Wikipedia

• Greenhouse effect — The Greenhouse effect refers to the change in the thermal equilibrium temperature of a planet or moon by the presence of an atmosphere containing gas that absorbs infrared radiation. [ [http://www.ipcc.ch/pdf/assessment report/ar4/syr/ar4 syr… …   Wikipedia

• Half maximal effective concentration — The term half maximal effective concentration (EC50) refers to the concentration of a drug or antibody which induces a response halfway between the baseline and maximum. [ [http://www.graphpad.com/curvefit/introduction89.htm Introducing… …   Wikipedia

• Free-air concentration enrichment — FACE facility in the Nevada desert. Free Air Carbon dioxide Enrichment (FACE) is a method used by ecologists and plant biologists that raises the concentration of CO2 in a specified area and allows the response of plant growth to be measured.… …   Wikipedia

• Ouzo effect — The ouzo effect during the preparation of absinthe. The ouzo effect (also louche effect and spontaneous emulsification) is a phenomenon observed when water is added to ouzo and other anise flavored liqueurs and spirits, such as pastis, raki, arak …   Wikipedia

• Field-effect transistor — FET redirects here. For other uses, see FET (disambiguation). High power N channel field effect transistor The field effect transistor (FET) is a transistor that relies on an electric field to control the shape and hence the conductivity of a… …   Wikipedia