查询词典 chiral

Compounds 1 and 2 are a pair of enantiomer, representing the first three-dimensional chiral polyoxometalates in the world.

主要研究结果如下：1。

Distribution behavior of terbutaline enantiomorph was investigated in a aqueous/organic two-phase system containing a chiral selector (L-dihexyltartrate).

研究了特布他林对映体在含手性选择剂水－有机溶剂两相体系中的萃取分配行为。

At the meantime, we synthesized the chiral spiroketal enol ether steroselectively and their absolute configuration were determined.

我们还对螺环缩酮烯醇醚类化合物的立体选择性形成规律进行了探索，并取得了积极的结果。

It was found that the chiral separation process was enthalpy controlled.

结果表明，分子烙印手性固定相的分离过程为焓控制过程。

Based on functional group transformation and C-C bond formation,this review focuses on the first-rate progress of the catalytic asymmetric reaction in China in recent years,especially its application in synthesis of chiral drugs and pharmaceutical intermediates.

本文从官能团的转换和碳硫键形成的角度概述了我国近年来在不对称催化反应领域的研究进展，特别是在手性药物及其中间体合成中的应用进展。

Besides the above main work of this thesis,we also do some other work related to the electroweak chiral Lagrangian,for instance we calculate the contributions to the oblique correction parameters S,T and U from heavy fermions and scalars in some generic representations of the electroweak gauge group.

除上述这些本论文工作的主要部分之外，我们还做了一些与电弱手征拉氏量相关的其它工作，例如我们计算了处于电弱规范群的一些一般表示的重费米子和重标量场对oblique修正参数S，T和U的贡献。

The results showed that the steric hindrance of the chiral auxiliaries and the Grignard reagents was the main factor to influence the stereoselectivity of Micheal addition.

研究结果表明手性助剂及格氏试剂的空间位阻是影响反应立体选择性的主要因素。

The chiral guanidine —compound(6)was synthesized from the methyl-phenylglycinate hydrochloride as material and the reaction conditions were investigated.

本文以-苯基甘氨酸甲酯盐为原料合成了手性胍—化合物(6)，并对合成反应条件进行了探索和优化。

The first half of this thesis reviews the heavy quark effective field the-ory and the heavy hadron chiral perturbation theory.

本文前半部分综述了重夸克有效场论以及重强子的手征微扰论。

The final section is an outlook for hydrazones in the areas of constructing chiral configurations and certain specific skeletons, based on their halogenation and acylation.

最后，在归纳腙类化合物的酰化、卤化等反应的基础上，对近年来有关腙用于有机合成构筑手性中心及环状骨架等研究成果进行了较完整的总结。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。