反应的

In this paper, through a series of experiments, two series of quaternary-ammounium Gemini surfactants were synthesized, namely the pair alkylene double quaternary ammonium salt surfactant m-s-m·2Br and the pair the alkylene double quaternary ammonium salt surfactant -s-·2Br. We has carried on the attribute with the infrared spectrum to its structure, and to affected the factor which the synthesis pair the alkylene double quaternary ammonium salt surfactant responded to carry on the discussion. We has discovered the synthesis pair the ethylene double quaternary ammonium salt surfactant m-2-m·2Br optimum condition: The bromo alkane and a tetramethyl ethylene diamine mole of ratio is 3.0: 1.0, makes the solvent by the ethyl alcohol, 80℃ under responds for 48 hours in the backflow temperature; Synthesis pair alkylene double quaternary ammonium salt surfactant 12-S-12 ·2Br optimum condition: 12 tertiary amine and 1, 3- propylene dibromide (1, 4- two bromines butane) a mole of ratio is 2.2: 1.0, makes the solvent by the ethyl alcohol, responds for 48 hours in the constant temperature 80 ℃ under backflow.

本文通过一系列的实验，合成了两个系列的Gemini型表面活性剂，即双烷撑双季铵盐表面活性剂m-s-m·2Br和双烷撑双季铵盐表面活性剂-s-·2Br，用红外光谱对其结构进行了表征，并且对影响合成双烷撑双季铵盐表面活性剂反应的因素进行了讨论，找出了合成双乙撑双季铵盐表面活性剂m-2-m·2Br的最佳条件：溴代烷与四甲基乙二胺的摩尔比为3.0：1.0，以乙醇作溶剂，在回流温度80℃下反应48小时；合成双烷撑双季铵盐表面活性剂12-s-12·2Br的最佳条件：十二叔胺与1，3-二溴丙烷(1，4-二溴丁烷)摩尔比为2.2：1.0，以乙醇作溶剂，在恒温80℃下回流反应48小时。

Students should grasp the classification of the nitration reactions and its industrial application, the main nitration reagents and the nitration method, the classification of the sulfonation reactions, the function of sulfo group and its in the industrial application, sulfonating agents and its industrial application, the separation method for the sulfonated compounds, the widespread applicationof diazonium and the coupled reactions and its in the industry specially employed in the dyes and the pigments synthesis

掌握硝化反应的分类及其在工业上的应用。掌握主要的硝化试剂和硝化方法。掌握磺化反应得分类、磺酸基的作用及其在工业上的应用。掌握磺化剂其在工业上的应用。了解磺化物得分离方法。掌握重氮化及偶合反应及其在工业上特别是在染料和颜料合成中的广泛应用。

"We determined these brain regions responded to tasks irrespectie of the senses inoled, they were engaged in selecting the appropriate response, and, most importantly, they showed 'queing' of neural actiity--the neural response to the second task was postponed until the response to the first was completed," Dux said.

"我们观察到他们的大脑区域活动特点是不管碰到哪种形式的任务，他们忙于选择正确的反应，并且最主要的是，他们显示出中枢活动'排队'的特点—直到第一个反应结束为止，对于第二个反应的中枢活动被延后进行。"Dux 说。

Furthernore, based on the Van't Hoff equation, the enthalpy and entropy of the complexation reaction were determined to be 55.3kJmol^(-1) and 218 kJmol^(-1), respectively.

基于Van't Hoff方程，求出了络合反应的摩尔反应焓和熵，其值分别为553 kJmol^(-1)和218 kJmol^(-1)。

The results show that the reactive characters of macro-kinetics are different from that of intrinsic kinetics under the same experimental conditions. The isobutene dimeric reaction follows 1.5 order reaction because of the effect of inner diffusion, and isooctane dimeric reaction follows zero order reaction.

结果表明，在相同的实验条件下，反应的宏观动力学行为与本征动力学行为有较大的不同，异丁烯的反应级数受内扩散影响由2级变为1.5级，异辛烯的反应级数则为0级。

By analysis of factors, influencing reaction a kinetic model to desc...

对影响活化反应的主要因素进行分析，建立活化反应动力学模型。

The results show that PP can be degraded in water when the temperature and pressure exceeded the critical points of water.

对于聚丙烯母粒在SCW中的降解反应来说，降解反应能够发生的最低条件是反应的温度和压力要超过水的临界温度和压力。

Ammonium carbamate was found to be the best ammonia donor for the reaction and its favorable concentration is 120~160 mmolL^(-1). The optimal water activity, reaction temperature, pH value and concentration of D, L-HPGME are 0.55~0.75, 35~40℃, 7.5~8.0 and 40 mmolL^(-1), respectively.

该反应的最适氨源为氨基甲酸铵，其较佳浓度为120~160mmolL^(-1)；最适水活度、反应温度、pH值、对羟基苯甘氨酸甲酯浓度分别为0.55~0.75、35~40℃、7.5~8.0和40mmlL^(-1)。

A conversion of 68% and an e.e. of 99% of epoxide were obtained when α-methylstyrene was oxidized by NaClO for 24 h at 0 ℃ in the presence of 4-PPNO.

在NaClO/PPNO氧化剂体系中0℃反应24h，α-甲基苯乙烯环氧化反应的转化率达68%，对映选择性e.e。

This is the first example in the presence of catalytic amount of Lewis acid among this kind of transformations.

这是此类转化反应的首例催化反应。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。