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单词 sterane
释义

Definition of sterane in English:

sterane

noun ˈstɛreɪnˈstɪəreɪnˈsti(ə)r-
Chemistry
  • Any of a class of saturated polycyclic hydrocarbons which are found in crude oils and are derived from the sterols of ancient organisms.

    〔化〕强的松龙,泼尼松龙

    Example sentencesExamples
    • The distribution of phenanthrenes, aromatic steranes, and dibenzothiophenes shows regular dependence on the maturity of organic matter.
    • Contrary to expectation, the relative abundance of steranes seems to be lower than that of the hopanoids, with the variety of hopanoid structures greatly outnumbering those of the steranes.
    • Some of the other archaeological samples look quite similar to bitumen derived from Cretaceous source rock, based on the distribution patterns of steranes and terpanes.
    • But because steranes are commonly degraded by bacteria, they are of limited use.
    • This biomarker group is, like the steranes, characterized by numerous maturity-sensitive stereoisomers.

Origin

1950s: from steroid + -ane2.

Definition of sterane in US English:

sterane

nounˈsti(ə)r-
Chemistry
  • Any of a class of saturated polycyclic hydrocarbons which are found in crude oils and are derived from the sterols of ancient organisms.

    〔化〕强的松龙,泼尼松龙

    Example sentencesExamples
    • Contrary to expectation, the relative abundance of steranes seems to be lower than that of the hopanoids, with the variety of hopanoid structures greatly outnumbering those of the steranes.
    • The distribution of phenanthrenes, aromatic steranes, and dibenzothiophenes shows regular dependence on the maturity of organic matter.
    • But because steranes are commonly degraded by bacteria, they are of limited use.
    • Some of the other archaeological samples look quite similar to bitumen derived from Cretaceous source rock, based on the distribution patterns of steranes and terpanes.
    • This biomarker group is, like the steranes, characterized by numerous maturity-sensitive stereoisomers.

Origin

1950s: from steroid + -ane.

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更新时间:2024/11/11 8:11:54