查询词典 reaction

In this paper,we discuss the hydration electron resulted from chemical reaction,and demonstrate the mechanism of reaction about electrotyping oxidation-reduction reaction by the hydrated electron.

本文讨论了在实验室产生水化电子的方法，并用水化电子的概念分析了电解过程氧化还原反应机理。

In addition, ioding was found to be an efficient catalyst for the imino Diels-Alder reaction of N-arylimine and enol ethers and the reaction provided tertrahydroqinolines in good yields. One pot synthesis of tetrahydroqinolines from aldehyde, aniline and enol ethers was also achieved using iodine as the catalyst. The chemical yield of the"one pot"reaction was comparable with that obtained using preformed N-arylimine.

此外我们也发现碘能够有效地催化N-芳基亚胺与烯醇醚的Diels-Alder反应，以很高的化学收率得到了四氢喹啉衍生物，并且发现碘也能够直接催化芳香醛、苯胺、烯醇醚的三组分"一锅"反应，获得的化学产率与使用预制的N-芳基亚胺相当。

The comparison of hydrolysis-polycondensation reaction and microstructure of ORMOSILs derived by TEOS, MTES, VTES, ETES confirms that the influence of organic group such as methyl, vinyl, ethyl and ethoxyl on the hydrolysis and polycondensation reaction rate depends on several factors including electron-donating capability, size and number of ethoxyl group which can participates polycondensation reaction.

确认甲基、乙烯基和乙基和乙氧基等改性基团对硅醇盐水解-缩聚反应速度的影响是取决于有机改性基团的电负性、尺寸和可水解的-OR基团数目等因素综合作用的结果，其水解速度依MTES＞TEOS＞VTES＞ETES的顺序递减。由于Si原子上可聚合的基团数目减少，导致MTES、VTES和ETES的聚合反应速度降低，而与水解速率失配。

Immunohistochemistry showed a positive reaction to cytokeratin and a negative reaction with smooth muscle actin..Conclusions:.The Alcian blue negative stain, the negative reaction to SMA, and the fact that the patient is still alive 10 years after exenteration favored the diagnosis of basal cell adenocarcinoma.

免疫组化显示，细胞角蛋白反应阳性，平滑肌肌动蛋白（结论：阿尔辛蓝染色为阴性、SMA反应阴性及病人在眶内容去除术10年后仍然存活的事实都倾向于基底细胞腺癌的诊断。

Immunohistochemistry showed a positive reaction to cytokeratin and a negative reaction with smooth muscle actin..Conclusio :.The Alcian blue negative stain, the negative reaction to SMA, and the fact that the patient is still alive 10 years after exenteration favored the diagnosis of basal cell adenocarcinoma.

免疫组化显示，细胞角蛋白反应阳性，平滑肌肌动蛋白（结论：阿尔辛蓝染色为阴性、SMA反应阴性及病人在眶内容去除术10年后仍然存活的事实都倾向于基底细胞腺癌的诊断。

The results showed that,two reaction mechanisms of enzyme-catalyzed reaction and thermal-hydrolyzed reaction were involved in the S-TE process,which began with depolymerization of sludge flocs by exoenzyme s including proteases and amylases,followed by cell-walls and organic matters disintegration and hydrolyz.

结果表明，S-TE污泥溶解存在2种反应和2个过程：嗜热菌胞外酶首先解聚污泥胶团，进而溶解细菌的细胞壁，水解胞内有机物质。

The reaction characteristics of flocculus formed in the reaction of cationic polymer to hydrolyzed polyacrylamide and the mass ratio of cationic polymer to HPAM in complete reaction were investigated experimentally. The flocculus has good ability to reduce the core permeability and the capability of washout resistance.

室内实验结果表明，阳离子聚合物与阴离子聚合物发生反应可产生稳定的絮状沉淀，完全反应时阳、阴离子聚合物的质量比为 30∶1；当絮状沉淀的浓度较高时，它具有很好的携砂能力，絮状沉淀可使岩心的渗透率降低 88%以上，且具有良好的抗冲刷能力。

The better reaction conditions are as follows: Reaction temperature is 40°C, Reaction time is 5 hour; the ratio of L - phenylalanine to acetic acid and N - formyl - L- aspartyl anhydrideis 1:10.2:1.1, Its yield is 95.4%.

在查阅文献的基础上，得到较优的α-L-天冬氨酰L-苯丙氨酸甲脂盐酸盐的合成方案，在甲醇一水体系中，N-甲酰-α-L-天冬氨酰-L-苯丙氨酸在浓盐酸的作用下60℃水解90分钟，后冷却到15℃加入浓盐酸在20～30℃保温反应96小时，进行甲脂化，形成甲脂盐酸盐，结晶析出。

Compound 5 is synthesized through Frieldel-Crafts reaction, Grignard reaction and substitution reaction from compound 1 which serves as starting materials.

以化合物1为起始原料通过付克反应、格氏反应和取代反应，得到最终产物化合物5。

By improving the chemical reaction between Potassium Iodide and Hydrogen Peroxide, using initial velocity and activation energy calculation, this paper proposes and discusses the reaction mechanism in the reaction.

通过改进碘化钾与过氧化氢的反应实验，用初速度的方法，通过活化能的计算，讨论提出的反应机理，确定反应级数和催化反应与非催化反应的速度常数。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。