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   杂环芳烃 在 有机化工 分类中 的翻译结果: 查询用时:0.217秒
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杂环芳烃
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  “杂环芳烃”译为未确定词的双语例句
    Facile Calculation of Characteristic Polynomial and Select Eigenvalues of Heterocyclic Benzenoids Using Chemical Graph Theory
    杂环芳烃选择本征值和本征多项式的快速计算法
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    HMO characteristic polynomial and select eigenvalues for many heterocyclic benzenoids are calculated by using chemical graph theory methods.
    应用化学图论计算了杂环芳烃HMO的选择本征值和本征多项式。
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HMO characteristic polynomial and select eigenvalues for many heterocyclic benzenoids are calculated by using chemical graph theory methods.

应用化学图论计算了杂环芳烃HMO的选择本征值和本征多项式。

The fragmentation mechanisrn of four isomers of pyridino and benzobenzanthrones was investigated by(EI)tandem mass spectrometry (MS/MS).The relationship between fragmentation pathways and structural characteristics was also discussed. Initial fragmentation pathways have been estimated by the intensities of fragmemt ions[M一H]+,[MHCN]+,[M一COH]+, [M一CO]i+, [M一(CO+2H)]i+ and[M一(CO+HCN)]i+ produced from Mi+ (i=1, 2). They indicated remarkable differences and very interesting features depending upon the isomer' s...

The fragmentation mechanisrn of four isomers of pyridino and benzobenzanthrones was investigated by(EI)tandem mass spectrometry (MS/MS).The relationship between fragmentation pathways and structural characteristics was also discussed. Initial fragmentation pathways have been estimated by the intensities of fragmemt ions[M一H]+,[MHCN]+,[M一COH]+, [M一CO]i+, [M一(CO+2H)]i+ and[M一(CO+HCN)]i+ produced from Mi+ (i=1, 2). They indicated remarkable differences and very interesting features depending upon the isomer' s component with or without nitrogen, and also the condensation positions of a pyridino or benzo ring to the benzanthrone skeleton. The collisioninduced dissociation(CID)spectra of M2+ ion showed more effectively specific differentiation for their fragmentation behaviors reflecting the structural characteristics of these isomers.

应用(EI)MS/Ms法研究了吡啶并苯并蒽酮以及苯并苯并蒽酮类异构体的裂解方式及其与结构之间的相关性,探讨了不同异构体中由M ̄(i+)产生的[M-H]+、[M-HCN]+、[M-COH]+、[M-CO](i+)、[M-(CO+2H)](i+)以及[M-(CO+HCN)](i+)(i=1,2)等1价及2价离子在MS/MS-CID谱上的强度差异和裂解方式,发现是否含有氮原子以及氮原子和苯环位置的差异,是支配这类化合物在CID谱中裂解行为的主要因素。研究结果表明,2价离子的CID谱能更有效地反映这类杂环芳烃异构体之间的结构差异和裂解特性。

The recent advances in biodegradation of refractory organic compounds by immobilized microbial cells were reviewed.The organic pollutants include phenols (phenol,chlorinated phenol,cresol,nitrophenol,etc.),aromatic compounds (mono-,poly- & hetero-cyclic aromatic compounds) and other refractory organics (aliphatic amides,cyanides,pesticides,herbicides,surfactants,etc.).The application prospects and existing problems were evaluated.

综述了90年代以来固定化微生物技术用于难降解有机污染物治理中的最新研究进展,这些难降解有机污染物包括:酚类(苯酚、氯代酚、甲酚、硝基酚等),芳香烃类(单环芳烃、多环芳烃、杂环芳烃)及其他化合物(酰胺类、氰、农药、杀虫剂、合成洗涤剂等)。并对固定化技术的应用前景及存在的问题进行了评述。

 
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