Gaois

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5 results

  1. SCIENCE|natural and applied sciences|life sciences

    #645484

    IATE #3523804
    rátathairiseach ionsúite Reference Faomhadh an téarma seo mar chuid de Thionscadal Lex
    ga
    uptake rate constant
    en
    Definition the numerical value defining the rate of increase in the concentration of test substance in/on test fish (or specified tissues thereof) when the fish are exposed to that chemical (k1 is expressed in day-1) Reference "Council Regulation (EC) No 440/2008 laying down test methods pursuant to Regulation (EC) No 1907/2006 of the European Parliament and of the Council on the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) CELEX:32008R0440/EN"
    Comment symbol: k1
    constante de vitesse d'absorption
    fr
    Definition valeur numérique définissant la vitesse d'accroissement de la concentration dans la substance à tester dans/sur le poisson (ou des tissus spécifiques de celui-ci) lorsqu'il est exposé à ce produit chimique (k1 est exprimé en jours – 1) Reference "Règlement (CE) n° 440/2008 de la Commission du 30 mai 2008 établissant des méthodes d'essai conformément au règlement (CE) n° 1907/2006 du Parlement européen et du Conseil concernant l'enregistrement, l'évaluation et l'autorisation des substances chimiques, ainsi que les restrictions applicables à ces substances (REACH) CELEX:32008R0440/FR"
  3. INDUSTRY|chemistry

    #645299

    IATE #3523313
    tairiseach ráta den bhréagchéad ord Reference Faomhadh an téarma seo mar chuid de Thionscadal Lex
    ga
    pseudo-first order rate coefficient | pseudo first-order rate constant | hydrolysis constants
    en
    Definition "if in a reaction between A and B, B stays constant, then the order of the reaction [ IATE:3523310 ] (with respect to time), as observed from the concentration change of A with time, will be α, and the rate of disappearance of A can be expressed in the form: vA = kobs[A]α (since the overall rate of reaction is given by: v = k[A]α[B]β). The proportionality factor kobs deduced from such an experiment is called the 'observed rate coefficient' and it is related to the ( α + β )th order rate coefficient k by the equation: kobs = k[B]β. For the common case when α = 1, kobs is often referred to as a 'pseudo-first order rate coefficient' (kψ)" Reference "IUPAC. Compendium of Chemical Terminology, 2nd ed. (the ""Gold Book""). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins http://goldbook.iupac.org/O04322.html [1.7.2010]"
    constante de vitesse de pseudo-premier ordre
    fr
  4. SCIENCE|natural and applied sciences|life sciences

    #645485

    IATE #3523805
    tairiseach an ráta díothaithe Reference Faomhadh an téarma seo mar chuid de Thionscadal Lex
    ga
    depuration rate constant | loss rate constant | elimination rate constant
    en
    Definition the numerical value defining the rate of reduction in the concentration of the test substance in the test fish (or specified tissues thereof) following the transfer of the test fish from a medium containing the test substance to a medium free of that substance (k2 is expressed in day-1) Reference "Council Regulation (EC) No 440/2008 laying down test methods pursuant to Regulation (EC) No 1907/2006 of the European Parliament and of the Council on the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) CELEX:32008R0440/EN"
    Comment symbol: k2
    constante de vitesse d'élimination | constante de vitesse de perte
    fr
    Definition valeur numérique définissant la vitesse de diminution de laconcentration de la substance à tester dans les poissons de l'essai (ou les tissus spécifiques) à la suite de leur transfert d'un milieu contenant la substance à tester à un milieu qui en est exempt (k2 exprimé en jours – 1) Reference "Règlement (CE) n° 440/2008 de la Commission du 30 mai 2008 établissant des méthodes d'essai conformément au règlement (CE) n° 1907/2006 du Parlement européen et du Conseil concernant l'enregistrement, l'évaluation et l'autorisation des substances chimiques, ainsi que les restrictions applicables à ces substances (REACH) CELEX:32008R0440/FR"