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No effect concentration

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  • 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

  • Predicted No Effect Concentration — Als PNEC (predicited no effect concentration) bezeichnet man die vorausgesagte Konzentration eines in der Regel umweltgefährlichen Stoffes, bis zu der sich keine Auswirkungen auf die Umwelt zeigen. Wird diese Konzentration also unterschritten,… …   Deutsch Wikipedia

  • Concentration effect — During induction of general anesthesia when a large volume of nitrous oxide is taken up from alveoli into pulmonary capillary blood, the concentration of gases remaining in the alveoli is altered. This results in effects known as the… …   Wikipedia

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

  • Concentration of media ownership — Journalism News · Writing style Ethics · Objectivity Values · …   Wikipedia

  • Concentration camps —    These camps are distinguished from the death camps, which had as their primary purpose the murder of Jews and other targeted victims of the Nazis. The concentration camps were originally organized to incarcerate political opponents of the Nazi …   Historical dictionary of the Holocaust

  • concentration — con|cen|tra|tion W2S3 [ˌkɔnsənˈtreıʃən US ˌka:n ] n 1.) [U] the ability to think about something carefully or for a long time →↑concentrate ▪ She needed all her powers of concentration to stop herself from slipping on the icy road. ▪ Lack of… …   Dictionary of contemporary English

  • 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

  • concentration effect — koncentracijos ribinė vertė statusas T sritis ekologija ir aplinkotyra apibrėžtis Kenksmingosios cheminės medžiagos koncentracijos žmonių darbo ar gyvenamojoje aplinkoje rodiklis, kurį viršijus cheminės medžiagos poveikis žmonių sveikatai yra… …   Ekologijos terminų aiškinamasis žodynas

  • 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

  • Measured environmental concentration — An Measured Environmental Concentration (MEC) relates to a chemical substance found in an environmental sample. The concentration of the compound may result from direct contamination, transformation and/or metabolization of an different chemical… …   Wikipedia

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