查询词典 reaction rate

The suitable reaction conditions are determined by thermal analysis for grafting systems via reactive extrusion technology. The grafted structure and grafted ratio are determined and tested by infrared spectrometry and chemical tritration method. The reaction mechanism, by-reaction inhibition, effect of initiator, and monomer on grafted products are studied extensively.

对反应挤出接枝体系进行了热分析，确定了合理的反应挤出工艺条件；用红外光谱和化学滴定的方法分别对接枝结构和接枝率作了定性表征和定量测定；对三种反应挤出体系的反应机理和副反应的抑制，以及引发剂、单体对接枝产物的影响进行了深入系统地研究；对PE接枝MAH作为铝塑复合管的热熔胶进行了工程化应用研究。

This experiment lasts a semester. The intelligence, choice reaction time and simple reaction time of the subjects are tested before and after the experiment. All the tests are carried out according to The Screening Scale for Children Intelligence and EP202/204 reaction time.

采用《儿童智力筛查量表》和EP202/203反应时测定仪，在实验前和实验后对被试的智力水平和简单反应时、选择反应时进行了测定、并在此基础上对实验数据进行了统计分析。

In order to meet the needs of the research work of driving suitability, a 'human body behaviour characteristics test apparatus'is developed. This apparatus can be used to test the simple reaction time, the choice reaction time, the action reaction time, the rapidperception ability and the ability of pursuit. It can display and print test results.

结合驾驶员的驾驶适宜性研究工作，开发研制了&人体行为特性测试仪&，这台仪器具有多项测验功能，能够测试人的简单反应时间、选择反应时间、动作反应时间，快速知觉能力和跟踪能力等多项人体行为特性指标，并且能够显示和打印输出测验结果。

The details are summarized as follows: 1.γ-irradiation is extended to control the morphology of microcrystals. In our experiments, copper acetate aqueous solution, a simple reaction system, is used at room temperature to prepare pure hexapod-shaped Cu〓O microcrystals, in which a buffer pair is in-situ formed to adjust the acidity of the reaction solution. Some important information on intermediate is obtained by changing the reaction parameter, which favors to reveal the inherent growth habit of Cu〓O.

发展了γ-射线辐照合成法对微晶的形貌的控制，在常温常压下从一个简单的反应体系——醋酸铜水溶液出发，通过辐照过程中原位产生的醋酸-醋酸根缓冲对的自发调节作用，控制反应体系的酸度从而合成得到了纯相的六足状氧化亚铜微晶；并通过改变反应参数，获得了中间体的信息，从而为揭示氧化亚铜的固有生长习性提供了条件。

The second reaction mixture consisted of 5uL 10×PCR buffer,0.5uL 20mmol/L dNTP,1uL of primer R2(25umol/L),0.5uL Taq(2.5U),1.5uL product of the first PeR reaction, 43μL of double-distilled water,the whole system was 50μL;The reaction was run under the following conditions:DNA pre-denaturation at 94℃for 5 min;DNA denaturation at 94℃for 30 s,primer annealing at 55.6℃for 1min,extension at 72℃for 30s,for 25 cycles, and extension at 72℃for 5min.

循环的条件为：94℃变性5min，从94℃变性30s、58.8℃退火1 min到72℃延伸30s共25个循环，最后72℃延伸5 min。

The technological scheme is that under the conditions one reaction temperature 40-200 deg.c, reaction pressure from normal pressure to 6.0 MPa and reaction velocity of 0.5-3/hr, C4 mixture as the main material is made to contact with catalyst to produce isooctene. The production process may be used in industrial production of selective C4 mixture dimerizing process to prepare isooctene.

本发明通过采用以混合碳四为原料，在反应温度为40～200℃，反应压力为常压～6.0MPa，反应液体体积空速为0.5～3小时-1条件下，反应原料与催化剂接触生成异辛烯的该技术方案较好地解决了上述问题，可用于混合碳四选择性二聚制异辛烯的工业生产中。

This Sm-catalyzed reaction firstly efficiently realized the catalytic cycle in the tandem rearrangement/reduction reaction of α-hydroxy epoxides, and moreover the diastereoselective amplification could be distinctly observed when two C1 epimers in substrate were subjected to this catalytic tandem reaction.

该催化的多功能串联反应，高度非对映选择性地一步控制了含有季碳的三个相邻立体中心，有效地构建了&2-季碳1，3-二醇&结构单元，首次实现了此类重排—还原过程的催化循环，其中对于两个C1位的差向异构体底物，此反应具有明显的非对映选择性放大特点。

In order to identify the ring-opening reaction between hydroxyl group and epoxide group, an analogous reaction was performed and the effect of reaction environment on conversion ratio was discussed in detail.

文中对羟侧基和环氧基的开环反应进行了模拟，并对大分子的反应程度及其影响因素进行了较详细的研究。

In chapter 3, general reaction of a-hydroxy epoxides were introduced. We have developed a newly gold-catalyzed ring opening reaction ofα-hydroxy epoxides containing carbon cycle. We have disclosed the rule of ring opening reaction. And the plausible mechanism was proposed.

第三章：首先介绍了α-羟基环氧化合物的反应，其次介绍了一个新的金催化的含碳环骨架的α-羟基环氧化合物开环反应，总结了反应规律，提出了可能的反应机理。

The rational reaction mechanism of alkylation with PTC was proposed and the experiments show that the alkylation reaction is a pseudo first-order reaction.

由实验得到的反应动力学方程符合拟一级反应，提出了合理的反应机理。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。