不对称

Asymmetric hydrogenation of quinoline derivatives is a hot topic in asymmetric hydrogenation. However, some problems still remained.

芳香杂环化合物喹啉衍生物的不对称氢化一直是不对称氢化领域的一个热点，然而对于苄基取代喹啉和一些多取代的喹啉衍生物至今没有实现有效的不对称氢化。

In this dissertation, Ir-catalyzed asymmetric hydrogenation, asymmetric transfer hydrogenation and asymmetric hydrosilylation of quinoline derivatives have been studied.

本论文研究了铱催化喹啉衍生物的不对称氢化、不对称转移氢化和不对称硅氢化反应。

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。

There are two independent molecules of ZnL or Co(IIL and two water molecules in one asymmetric unit of complex 1(or 2), the crystal structure of CuClL1·2H2O consists of one molecule of CuClL1 and two water solvate molecules in the asymmetric unit, while the ZnL·CH3OH (4) comprises of one molecule of ZnL and a methanol molecule in per unit.

在这四个金属配合物中，配合物(1)和配合物(2)的每个不对称单元中有两个独立的ML 分子和两个水分子，配合物(3)的每个不对称单元中有一个CuClL1分子和两个水分子，而配合物(4)的每个不对称单元中只有一个ZnL 分子和一个甲醇分子。

There are two independent molecules of ZnL or Co(IIL and two water moleculesin one asymmetric unit of complex 1(or 2), the crystal structure of CuClL_1·2H_2O consistsof one molecule of CuClL_1 and two water solvate molecules in the asymmetric unit,while the ZnL·CH3OH (4) comprises of one molecule of ZnL and a methanolmolecule in per unit.

在这四个金属配合物中，配合物(1)和配合物(2)的每个不对称单元中有两个独立的MLZn(IIL、CoL分子和两个水分子，配合物(3)的每个不对称单元中有一个CuClL_1分子和两个水分子，而配合物(4)的每个不对称单元中只有一个ZnL分子和一个甲醇分子。

This paper also applies game theory to set up game models for ante-accommodation and post-accommodation. In the information model for ante-accommodation, commercial banks expect the occurrence of separate game equivalence not the pooled game equivalence, for in pooled game equivalence, commercial banks may easily choose adverse selection to provide loans because of asymmetric information, while in the supervision model for post-accommodation, banks and enterprises hardly make pure strategic equivalence, that is, they can not achieve Pareto optimum in the same time, meanwhile, when the supervision model for post-accommodation achieve pooled strategic equivalence, we will make use of probabilities of enterprises not keeping their promises and probabilities of bank supervision as indexes for describing qualitatively the credit risk for enterprises and the credit risk for bank supervision.

首先，论文对信贷活动中信息不对称所产生的逆向选择与道德风险及由此产生的信贷风险进行了一般理论分析，并提出了防范逆向选择和道德风险的一般模型；其次，论文结合我国信贷市场预算约束软化这一根本特征，研究了我国信贷活动中由信息不对称而产生的信贷风险形成机理的特殊性进行了分析；接着，运用博弈论方法对我国信贷市场中商业银行与企业在申请贷款、偿还贷款时的博弈行为进行了深入分析；最后，文章提出了消除信贷市场信息不对称的对策和建议。

Result: For all of the 100 atlases samples, in 15 samples (15%) there were skew transverse processes in abscissa axis, in 5 samples (5%) asymmetry of anterior and posterior tubercles in longitudinal axis, in 10 samples (10%) asymmetry of left and right posterior arches of atlases, in 11 samples (11%) asymmetry of vertebral foramens.

结果：100例寰椎标本左右横突在横轴上偏歪者15例(15%)、前后结节在纵轴上不对称者5例(5%)、左右后弓不对称者10例(10%)、椎孔不对称者11例(11%)。

The synthesis and characterization of asymmetric dinuclear and mononuclear vanadium complexes show that the pH value is very important for the products\' formation and isolation. In some pH range, theα-alkoxy bridge was easy to break and form asymmetric dinuclear and mononuclear vanadium structure.

三、不对称的双核钒和单核钒配合物的合成和表征显示，pH值对产物的形成和分离具有至关重要的作用。pH值在一定范围内，柠檬酸的烷氧基氧作为桥氧的化学键才容易断开，从而形成不对称的双核钒和单核钒结构。pH值不仅影响不对称双核V_2O_3钒配合物和单核钒配合物的形成，还关系到钒还原的速度。

Chapter 7 focuses on the asymmetries in the categorial shift between verb and noun, pointing out that these asymmetries are rooted in the conceptualasymmetry of verb and noun.

第七章研究动名相互转化中的种种不对称现象，分析不对称现象产生的根本原因在于动词和名词之间概念上的不对称。

And as a result of geothermal field dissymmetry and geometrical dissymmetry of slant slope embankment, the road deformation becomes dissymmetrical too.

由于路基地温的不对称和斜坡路基的几何不对称，引起了路基变形的不对称。

In this paper, the requirement analysis, design and implementation of the system are introduced in detail.

此论文详细介绍了系统的需求分析，系统设计和具体实现。

In the context of economic globalization is increasingly deepening, China's economy can not be spared.

在经济全球化日益加深的背景下，中国经济不可能做到独善其身。