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Curing kinetics for two kinds of isomeric compound different proportion BPF-epoxy resin/MeTHPA/DMP-30 system is studied by means of differential scanning calorimetryand the extreme value method.

利用差示扫描量热法和极值法对两种同分异构体分布不同的双酚F环氧树脂/甲基四氢苯酐/DMP-30体系固化动力学进行了研究,求得了体系的固化动力学参数,并对同分异构体分布与固化特性之间的关系进行了初步讨论。

The influence of solvent and medium on the absorption spectrum and the equilibrium between azo tautomerism and hydrazone tautomerism was discussed.

讨论了溶剂和介质对各个染料紫外可见吸收光谱及偶氮式异构体与腙式异构体互变平衡的影响。

In like wise, the acidic matrixes can prevent transforming from deltamethrin to its isomer.

溴氰菊酯两个异构体峰的比值在不同基质中存在显著差异,橙子、番茄、葡萄等酸性基质和甘蓝中异构体1所占比重最小,溴氰-1:溴氰-2≈1:4;而在洋葱、蒜、黄瓜中两者比例几乎达到1:1。

Complex 4 exists as a mixture of two isomers. The interconversion between the two isomers was studied by variable-temperature 1H NMR.

化合物4存在两种异构体,通过变温核磁研究了这两种异构体的相互转化。

The molecular structure of this isomer has been determined by X-ray diffraction and it is the first time to report the crystal structure of this kind of isomer which was proposed erroneously in the literature.

采用X-射线衍射的方法测定了其中一个异构体的结构,这是对此类异构体单晶结构的首次报导,纠正了文献中存在的对此类化合物结构的错误认识。

However, the formation of metal chelation at one or two side of biphenyl resulted a pair of enantiomers of monometallic or bimetallic complexes. Moreover, if the coordinating groups have chiral element (e.g., chiral oxazolines), the diastereomeric metal complexes will be formed.

而且,如果配位基团上带有手性元素,它们跟金属配位后得到一对非对映异构体,由于手性元素的影响,形成这一对非对映异构体的能量是有差异的。

Such as pentane there are three isomers, Wang alkyl has 35, while containing 30 carbon atoms, the number of isomers of alkanes up to 411 × 109 Ge.

例如戊烷的异构体有3个,王烷有35个,而含30个碳原子的烷烃的异构体数目高达411×109个。

A discussion of the possible formation and control of polymorphic and enantiomeric substances.

讨论可能会形成的异构体并讨论异构体的控制。

In order to evaluate the difference between enantiomers and the racemate in the research about pharmacology and toxicology, both high optical pure enantiomers of KMBZ-009 were obtained with efficient method of enzymatic-catalyst kinetic resolution.

2为了评价KMBZ-009光学对映异构体在药效、毒性上是否存在显著性差异,成功地进行了KMBZ-009光学异构体酶促动力学拆分。

The results showed that the four stereoisomers of soman were well separated under the defined chromatographic conditions. CP-)soman was only detected stereoisomer in the intoxicated rabbit blood and eliminated rapidly, the toxicokinetics could be described by a two-compartment model after rabbits received soman via vein.

结果可见梭曼4个异构体在确定的气相色谱条件下得到了较好地分离;给兔iv梭曼43.2 μg·kg-1后,血中仅测到一对CP梭曼,其消除过程符合二室开放模型, V d=2.1 L·kg-1, t 1/2α=4.5 s, t 1/2β=72 s, AUC(15~300 s)=2.08 mg·s·L-1, CL =21 mL·kg-1·s-1,血中CP梭曼在血中消除过程反映了机体对梭曼毒性异构体的解毒过程。

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随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

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