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The reaction of pyrrole with asymmetric ketones has been investigated and sixteen new functionalizedcalix[4]pyrroles have been synthesized and characterized.

本文探讨了非对称脂肪酮与吡咯的反应，合成了16个新型功能化的杯[4]吡咯化合物，解析了四个杯[4]吡咯和其包结物的晶体结构。。。

Previously, we reported chiral 2, 5-disubstituted pyrrolidine derivatives as chiral catalyst ligands in the reaction of diethylzinc with arylaldehydes. Very high yields and enationselectivities have been achieved in this asymmetric addition reaction.

我们小组以前合成的具有C〓-对称性的五员氮杂环类手性配体在二乙基锌和醛的不对称加成反应中取得了优良的结果。

Conclusion. We think that intraoperatie reduction by asymmetric traction is a reliable and safe technique to correct neuromuscular scoliosis and pelic obliquity in nonwalking spastic quadriplegic patients.

我们认为通过不对称牵引进行术中复位是纠正不能行走的痉挛性四肢瘫痪病人神经肌肉性脊柱侧凸和骨盆倾斜的可靠和安全的手术方法。

The parametic geometric feature include standard spur gear , helical gear, symmetrical tooth ,asymmetric tooth, double involute gear with ladder shape teeth, and Max-supporting quadruplet involute gear with four independent pressure angles with Ladder shape teeth.

支持的形状包括直齿，斜齿，对称齿形，不对称齿形，分阶齿。最高支持到具有4个独立压力角的齿轮副的生成。

Up to 97% ee was also obtained in the asymmetric hydrogenation of the more difficult and less studied 2,3-disubstitued quinoline derivatives.

以手性二胺与金属铱形成的配合物Cp*Ir(CF3TsDPEN)为催化剂，研究了在空气条件下喹啉衍生物的不对称氢化反应。

The 2/SegPhos/I2 system can be applied in asymmetric hydrosilylation of quinoline and quinoxaline derivatives successfully, and up to 93% ee was obtained.

芳香杂环化合物喹啉衍生物的不对称硅氢化反应一直是不对称氢化领域的一个难点，我们利用2/-SegPhos/I2催化体系首次实现了杂芳香化合物：喹啉和喹喔啉的不对称硅氢化反应，最高获得了93%的ee值。

Under an incompletion market condition, existing asymmetric information and risk-aversion, any quoter who formerly acts not only considers own quote influence but also predicts the other quotes influences upon the result, facing to uncertainty influence of the trader type.

在一个不完全的市场上，存在非对称信息和风险回避的条件下，首先行动的报价者不仅要考虑到自己的报价对结果的影响、而且要推断其他报价者的报价对结果的影响，以及面临交易者类型不确定性的影响。

Chiral aminoalcohol is an important kind of chiral substance in the asymmetric synthesis, meanwhile, it is widely used in the field of medicine synthesis and the resolution of raceme.

手性氨基醇在不对称合成领域中是一类重要的手性源，同时，手性氨基醇在药物合成、外消旋体拆分等领域也具有广泛的用途。

It was pointed out that the major difference in all the routes was the adjustment in the synthesis of intermediates: 1 racemization of-intemediate; 2 asymmetric synthesis of-intermediate, 3 the preparation of duloxetine from-intermediate.

指出所有这些路线的主要的区别在于调整了中间体的合成方法：将不能利用的-中间体消旋，手性合成-中间体，-中间体制备盐酸度洛西汀。

Raff." Asymmetric segregation of Numb: a mechanism for neural specification from drosophila to mammals ."

Raff。〈 Numb的非对称隔离：从果蝇到哺乳动物的神经分化机制〉《自然神经科学》第5卷(2002)： 1265-1269页

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失