反应速率

It wasfound that the kinetics formulas of these photo-polymerization systemsdeviated from the normal kinetics formula sharply and there existed acritical concentration of 〓, the reaction rate would descendwhen the concentration of 〓 exceeded it.

我们发现这些光聚合反应的动力学方程与正常的动力学方程偏离较大；并首次报道了当〓的浓度达到某—临界值时，反应速率随着〓浓度的上升反而下降的现象。

The activation energy was calculated to be 406 kJ/mol and the rate constants were determined.

测定了各反应条件下的反应速率常数并测得其活化能为406kJ/mol。

To increase the solution temperature, the loading of TiO〓 and the light intensity advisably has advantage to the increase of reaction rate.

在反应条件中，存在一个最佳pH值，提高温度、TiO〓用量及光强均对提高反应速率有益。

Hydrolysis and alcoholysis were proceeding at the same time, and the reaction rates of them were about equal.

在体系中同时发生醇解和水解反应，且两者的反应速率十分接近。

As well as activity was exhibited. Theaddition of cinchonidine led to a remarkable increase in the reaction rate, as confirmed bythe IR study that the modifier activates the carbonyl groups of the reactant through itsquinuclidine nitrogen. On the contrary,〓 exerted a strong inhibition effect on theenantioselective hydrogenation. Chapter 3 Finely dispersed polyvinylpyrrolidone-stabilized iridium andbimetallic clusters were prepared by the alcohol-water reduction method.

第三章 采用醇水还原的方法制备了聚乙烯基吡咯烷酮稳定的铱纳米簇及双金属纳米簇，对丙酮酸甲酯的催化氢化表明，在铱金属簇催化体系中，辛可尼定不仅诱导了一定的对映选择性，同时对反应活性有明显的促进作用，平均反应速率可提高2-6倍。

Generation of product was observed under340～370nm in the reaction of rutin and α-hydroxy ethyl peroxyl radical. The observed1st order build-up and decay of the new product was calculated to be (1.11±0.08)〓, respectively.

在340～370nm观察到了芦丁与有机过氧自由基反应体系中新物质的生成，并计算得到了新物质生成和衰变的的表观一级反应速率常数分别为〓和〓。

The ethanol can not only inhibit the anodic oxidation of formaldehyde, but also accelerate the deoxidation of Cu~(2+) in suitable concentration.

而无水乙醇既可以降低甲醛氧化反应速率，在一定浓度范围内又促进Cu~(2+)的还原反应，它对镀速的影响与其浓度有关。

Using the combination of the model with corresponding experimental observation, the important kinetic parameters, the diffusion coefficient and the rate constant could be obtained.

这个模型与相应的动力学实验相结合可以测出反应物在明胶层中的扩散系数和反应速率常数。

A large number of bond-type complexes, as long as the hydrogen of the molecules covalently coupled to the molecular approach in an electronegative atom up, that constitutes a hydrogen bond, there are intramolecular hydrogen bonds and intermolecular hydrogen bonds of the points, will affect the formation of complex reaction carried out, such as in solution adding dioxa cyclohexane, or tetrahydrofuran, will reduce the alkylation reaction rate.

氢键型络合物为数众多，只要含氢的分子以共价键方式耦合到分子中一个电负性原子上去，即构成氢键，有分子内氢键和分子间氢键之分，络合物的形成将会影响反应的进行，如在溶液中加入二氧杂环己烷或四氢呋喃，都会降低烷基化反应速率。

The carbonylation of methanol is homogeneous phase and hydrogenolysis of methyl formate is heterogeneous phase.

并在假想不同的步骤为反应控制步骤的基础上，提出了可能的30种反应速率方程。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。