歧化反应

Further research indicates that the polymerization of HEMA was induced by the disproportionation of dihydropyridinium. From results above, the mechanism of Gluma as a desensitizer could be proposed as follows.

发现戊二醛与牛血清蛋白之间的反应可以使水溶液中的HEMA聚合，进一步研究发现HEMA的聚合与二氢吡啶盐歧化过程所产生的自由基有关。

Rate constant of ONOO〓 formation, which is access to diffusion-controlled limit, is as three times as that of dismutation of O〓〓· by superoxide dismutase, and much faster than that of reaction of NO with hemecontaining proteins, thus demonstrating that ONOO〓 can form as long as NO meets O〓〓· during their diffusion in biological milieu.

ONOO〓在体内生成有较充分的理论依据。ONOO〓的生成速率接近于受控制的弥散极限，比超氧化物歧化酶歧化O〓〓·的速度快3倍，远远超过NO与血红素蛋白的反应速度。

The rate constants and IC50 values of the dismutation of O2 catalyzed by these complexes have been determined by riboflavin-nitroblue tetrazolium illumination method.

采用核黄素-NBT光照法测定了配合物催化O_2~-歧化的反应速率常数K_Q以及IC_(50)值。结果表明，七种配合物具有相当好的SOD活性，它们的K_Q和IC_(50)值分别在4.08×10~6-1.65×10~7'mol·L~(-1)s~(-1)和1.42×10~(-6)-2.93×10~(-7)mol·L~(-1)范围之内。

The reaction mechanism of H2O2 dismutation catalyzed by a non-heme tetraaza annulene complex has been investigated by density functional theory using the B3LYP functional.

采用密度泛函理论B3LYP方法计算了一种非血红素四氮杂轮烯配合物催化H2O2歧化的反应机理。

The mercerized zeolite thus prepared may be used as catalyst in disproportionation of tolune and reaction of alkyl transference.

制得的高硅丝光沸石可应用于制造甲苯歧化与烷基转移反应的催化剂。

The method can be used in dimethylbenzene industrial manufacture by methylbenzene disproportionation and alkyl transfer.

本方法集中了轴向反应器和径向反应器的优点，同时克服了以往轴径向反应器由于径向和轴向沉降，易造成反应气体短路的现象，可用于甲苯歧化与烷基转移生产二甲苯的工业生产。

When termination occurs partly by disproportionation, the prepolymer chains in the product carry branches as well as cross-links.

当终止反应一部分是由歧化所起时，则在产物中预聚物链不但带有交联也带有支链。

Rational reaction condition is that ratio of the Cu(superscript 2+) schiff base complex of disproportionated rosin amine is 3%, urushiol concentration is 68.8 g/L, the system of reaction reacts 36 h at 30℃ in alcohol dissolvent.

结果表明，氧化聚合反应的理想条件是以乙醇为溶剂，加入3%歧化松香胺席夫碱－铜配合物催化剂，漆酚浓度为0.0688g/ml，在30℃下反应36h后，漆酚聚合物的沉淀得率为51.3%。

The optimal conditions for the target product were obtained: reaction temperature 110 ℃, reaction time 1.5 h, NaOH dosage 1.2 g,molar ratio 3:1(disproportionated rosin glycide ester: the hydroxyl group per D-glucose unit), microwave power 700 W.

目标产物的最佳合成条件：反应温度110℃，反应时间1.5 h，NaOH用量1.2 g，摩尔比3：1（歧化松香缩水甘油酯：葡萄糖单元中羟基数）及微波功率700 W。

In this paper, the chemical equilibrium constants of the reactions in the reaction system of toluene disproportionation and trimethylbenzene transalkylation reaction system were carefully calculated , and the equilibrium compositions of the components at different temperatures and different feed mole ratios were analysed .

对甲苯歧化与三甲苯烷基转移反应体系中反应的化学平衡常数进行了详细计算，并对不同温度、不同进料组成下的平衡组成进行了分析。结果表明，随温度升高，甲苯与三甲苯的芳烃平衡转化率降低，二甲苯的平衡组成亦降低；降低进料中甲苯和三甲苯的摩尔比，甲苯和三甲苯的总芳烃平衡转化率降低，而二甲苯的平衡组成明显上升。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐