反应的

The reported organocatalyst for asymmetric Mannich reaction include proline derivatives, chiral phosphoric acids, chiralurea derivatives, cinchona alkaloids and so on, which can catalyze the asymmetric Mannich reaction with high catalytic activity and excellent enantiselectivity.

本文评述了各类有机催化剂在有机催化不对称Mannich 反应中的应用研究进展，以及不对称诱导反应的机理、催化剂分子结构及反应条件对其催化活性和不对称诱导作用的影响。

Two framework have been investigated carefully and presented in this thesis. The 18O(1D) reaction with cyclopropane has been investigated using the eletron impact ionization based universal crossed molecular beam techniques.

在环丙烷与单重态氧原子反应的实验中，反应产物经由飞行时间谱的测量，至少有四个反应通道被发现，分别是氢原子形成，氢分子( H2)形成，乙烯( C2H4)形成以及氢氧基形成的过程。

Based on these results, the factors and kinetics of solar energy photoelectrocatalytic degradation of model pollulants, the cathodic behavior and its dependence on anodic reactions, have been studied in detail.It was demonstrated that metal silver and hydrogen peroxide can be generated, respectively,in the cathode during photoelectrocatalytic degradation of organics in the anode, and that photoanodic reaction is the rate-determing step in the system.

在此基础上查明了太阳能光电催化降解污染物体系的影响因素和动力学规律，阴极反应行为及与阳极反应的相互关系，实现了阳极光电催化降解污染物的同时，阴极分别回收金属银和产生过氧化氢，证明了光电催化反应时，阳极氧化反应是速率控制步骤。

A mass of DMO in the transesterification course inhibited the disproportionation which has a small equilibrium constant. As a result, selectivity and yield of DPO were low.

酯交换反应中由于反应物DMO的大量存在阻碍了平衡常数较小的歧化反应的进行，使得DPO选择性和收率较低。

While taking estriol, patients with relapsing remitting MS also had an an improvement in cognitive test scores and an increase in protective immune response, reflected in significant decreases in delayed-type hypersensitivity responses to tetanus and in interferon-gamma levels in peripheral blood mononuclear cells.

服用estriol时，复发性弛张型MS患者，还会出现认知检查得分的增加及保护性免疫反应的好转，这反应明显降低强直性延迟型高敏感反应及周边血单核白血球中的γ干扰素浓度。

Using the MP2 method at the 6-311G level, the geometries of the reactants, transition state and products of the hydrogen abstraction reaction of isocyanic acid with formyl radical have been optimized. Changes of bond lengths of interacting molecules and the stationary point structures were discussed along the minimum energy paths.

在 UMP2/6-311G计算水平上，优化了标题反应的反应物、过渡态、产物的几何结构，沿最小能量途径讨论了异氰酸和甲酰自由基发生氢转移反应位能面上驻点的结构以及相互作用分子结构变化。

The overall rate and the overall activation energy of AA-Na polymerization have been determined by gravimetry.

同时用重量法研究了聚合反应过程中的动力学行为，得到了反应的速率方程及反应的活化能。

The first aim of this study is to clarify whether that polymorphisms of the genes that encode these enzymes associates with the TB drugs-induced adverse reactions. Furthermore, since tuberculosis patients are always administrated with multiple TB drugs, it is hard to distinguish which TB drug caused these adverse reactions.

本研究从结核药物过敏病患代谢酵素基因多型性方面探讨与结核药物过敏反应发生的相关性；此外，由於结核病患通常同时接受多种结核药物的治疗，导致难以判断是其中何种药物引起不良反应，本研究另一目标即为建立一T细胞体外培养系统，用於判断何种药物引起不良反应的产生。

By use of the Fischer-Tropsch reaction in a C-H-O system, we discussed the relationships between inorganic CO〓 and some physical chemistry conditions, such as Oxygen flee degree , temperature, pressure, other objects consistency and catalyzer. a when T=200K～2000K, if f〓＞0, the reaction of generating CO〓 will be dominant, CH〓 hardily exists; b when T＞1000K, CH〓 is not propitious to exist, carbon in system almost exists in form of CO〓; c the more pressure, the more CO〓 is propitious to exist; d the more consistency of CO, O〓 and H〓O, the more CO〓 is propitious to exist, the more consistency of H〓, the more CH〓 is propitious to exist.

依据C-H-O体系费托反应的简化模型，讨论了氧逸度、温度、压强、其它物质浓度、催化剂等物理化学条件对无机成因CO〓生成的影响，从理论上讨论了在地质环境中，无机成因CO〓存在的物理化学条件：1在T＝200K～2000K的温度范围内，体系中一旦氧逸度＞0，生成CO〓的反应将占绝对优势，CH〓几乎不可能存在；2T＞1000K时，不利于CH〓形成，使体系中的碳主要以CO〓的形式存在；3体系压强越大，越有利于CO〓的形成；4反应物CO、O〓、H〓O的浓度越高，越有利与CO〓的存在，H〓的浓度高有利于CH〓的形成。5地质成藏作用可以经历很长的地质年代，这足以补偿矿物岩石中的Ni、Mo、Fe、Co、Ru等催化性能的降低及其它动力学条件的不足，使得费托反应可能发生，从而生成无机成因的CO〓和烃类。

The addition reaction of diazo pyrazoles and isocyanate has been investigated and the mechanism of this reaction has been guessed.

研究了重氮基吡唑同异氰酸酯的环加成反应，初步推测了该反应的机理。利用此反应设计了一类可能具有生物活性的吡唑骈[5，1-d][1，2，3，5]四嗪-4-酮类衍生物。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！