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7 dtoradh

  1. INDUSTRY|chemistry

    #634409

    IATE #1684575
    isiméir Tagairt "Rialachán (CE) Uimh. 1272/2008 maidir le haicmiú, lipéadú agus pacáistiú substaintí agus meascán, agus lena leasaítear agus lena n-aisghairtear Treoir 67/548/CEE agus Treoir 1999/45/CE, agus lena leasaítear Rialachán (CE) Uimh. 1907/2006, CELEX:32008R1272/GA Faomhadh an téarma seo mar chuid de Thionscadal Lex"
    ga
    Comhthéacs 'I gcás ina bhfuil substaint ghníomhach táirge íocshláinte tréidliachta cineálaigh comhdhéanta de shalainn, eistir, éitir agus isiméir agus de mheascáin d’isiméir, de choimpléisc nó de dhíorthaigh atá éagsúil ón tsubstaint ghníomhach a úsáidtear sa táirge íocshláinte tréidliachta tagartha, measfar gurb í an tsubstaint ghníomhach chéanna í agus a úsáidtear sa táirge íocshláinte tréidliachta tagartha, mura bhfuil difríocht shuntasach eatarthu i ndáil le hairíonna i dtaca le sábháilteacht nó éifeachtúlacht.' Tagairt "Rialachán (AE) 2019/6 maidir le táirgí íocshláinte tréidliachta agus lena n-aisghairtear Treoir 2001/82/CE, CELEX:32019R0006/GA"
    Isomer
    de
    Sainmhíniú Zwei oder mehr Verbindungen mit gleicher Summenformel, aber mit unterschiedlichem Molekülbau (Struktur, Konstitution) und unterschiedlichen physikal. und (…) auch chem. Eigenschaften. Tagairt Der Brockhaus, Naturwissenschaft und Technik, Bibliographisches Institut & F. A. Brockhaus AG, Mannheim, Spektrum Akademischer Verlag GmbH, Heidelberg, 2003
    isomer
    en
    Sainmhíniú one of several species (or molecular entities) that have the same atomic composition (molecular formula) but different line formulae or different stereochemical formulae and hence different physical and/or chemical properties Tagairt "'isomer' (4.12.2019), IUPAC. Compendium of Chemical Terminology, 2nd ed. (the ""Gold Book""). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). Online version (2019-) created by S. J. Chalk. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook (4.12.2019)"
    Nóta For the classification of isomers, please see the graphic.
    isomère
    fr
    Sainmhíniú Composés possédant la même formule brute (leurs molécules sont donc formées des mêmes atomes, en nombre égal), mais non de la même formule développée Tagairt "Règlement (CE) n° 1272/2008 du Parlement européen et du Conseil du 16 décembre 2008, CELEX:32008R1272/FR"
  2. INDUSTRY|chemistry

    #642569

    IATE #3508593
    cis-isiméir Tagairt Faomhadh an téarma seo mar chuid de Thionscadal Lex
    ga
    cis-isomer
    en
    Sainmhíniú stereoisomeric olefins or cycloalkanes (or hetero-analogues) which differ in the positions of atoms (or groups) relative to a reference plane: in the cis-isomer the atoms are on the same side, in the trans-isomer they are on opposite sides Tagairt "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/C01093.html (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8 [4.9.2009]"
    Nóta See graphic
    isomère-cis
    fr
  3. INDUSTRY|chemistry

    #642570

    IATE #3508594
    isiméir chomhdhéanaimh Tagairt Faomhadh an téarma seo mar chuid de Thionscadal Lex
    ga
    isiméir struchtúrach Tagairt Faomhadh an téarma seo mar chuid de Thionscadal Lex
    ga
    constitutional isomer | structural isomer
    en
    Sainmhíniú isomers that differ in constitution and are described by different line formulae Tagairt "Based on: 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. ISBN 0-9678550-9-8. http://goldbook.iupac.org/C01285.html [4.9.2009]"
    Nóta e.g. CH3OCH3 and CH3CH2OH (the first substance is an ether while the second is an alcohol)
  4. INDUSTRY|chemistry

    #618171

    IATE #1083361
    diaisteiré-isiméir Tagairt Faomhadh an téarma seo mar chuid de Thionscadal Lex
    ga
    diastereoisomer | diastereo-isomer | diastereomer
    en
    Sainmhíniú "stereoisomer not related as mirror image" Tagairt "'diastereoisomerism' (10.2.2022). 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"
    Nóta COM-2022.02.10
  6. INDUSTRY|chemistry

    #620564

    IATE #1140571
    tras-isiméir Tagairt Faomhadh an téarma seo mar chuid de Thionscadal Lex
    ga
    trans-isomer
    en
    Sainmhíniú stereoisomeric olefins or cycloalkanes (or hetero-analogues) which differ in the positions of atoms (or groups) relative to a reference plane: in the cis-isomer the atoms are on the same side, in the trans-isomer they are on opposite sides. Tagairt "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. ISBN 0-9678550-9-8 [4.9.2009]"
    Nóta See graphic
    isomère trans
    fr
  7. INDUSTRY|chemistry

    #634410

    IATE #1684578
    eanantaiméir Tagairt Faomhadh an téarma seo mar chuid de Thionscadal Lex
    ga
    optisches Isomer | Enantiomer
    de
    optical isomer | enantiomer
    en
    Sainmhíniú one of a pair of molecular entities which are mirror images of each other and non-superposable Tagairt "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. ISBN 0-9678550-9-8. http://goldbook.iupac.org/E02069.html [4.9.2009]"
    Nóta An enantiomer can be named by the direction in which it rotates the plane of polarized light. If it rotates the light clockwise (as seen by a viewer towards whom the light is traveling), that enantiomer is labeled (+). Its mirror-image is labeled (−). The (+) and (−) isomers have also been termed d- and l-, respectively (for dextrorotatory and levorotatory). This labeling is easy to confuse with D- and L-.An optical isomer can be named by the spatial configuration of its atoms. The D/L system does this by relating the molecule to glyceraldehyde. Glyceraldehyde is chiral itself, and its two isomers are labeled D and L (typically typeset in small caps in published work).The D/L labeling is unrelated to (+)/(−); it does not indicate which enantiomer is dextrorotatory and which is levorotatory. Rather, it says that the compound's stereochemistry is related to that of the dextrorotatory or levorotatory enantiomer of glyceraldehyde—the dextrorotatory isomer of glyceraldehyde is, in fact, the D isomer.The D/L system remains in common use in certain areas of biochemistry, such as amino acid and carbohydrate chemistry, because it is convenient to have the same chiral label for all of the commonly occurring structures of a given type of structure in higher organisms. In the D/L system, they are nearly all consistent - naturally occurring amino acids are nearly all L, while naturally occurring carbohydrates are nearly all D.
    isomère optique
    fr
    Sainmhíniú molécule différant par son activité optique Tagairt Lalanne Marcel,Gloss.de biochimie,Département de biochimie,Faculté de médecine,Université Laval,Québec,1998