查询词典 catalyze

Sahghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China Abstract: Carboxylesterases are a group of related enzymes that catalyze the hydrolysis of a vast number of ester-containing endogenous and exogenous compounds.

中国科学院上海生理生态研究所，上海 200025 摘要：羧酸酯酶水解众多内源和外源含酯的化合物。

They were principally used to catalyze aldol, allylation, Diels-Alder, ene and Friedel-Crafts reactions.

它们主要被用来催化Aldol，烯丙基化，Diels-Alder，Ene和Friedel-Crafts等反应。

When 5 mol% of 1a was used to catalyze the reaction at 0℃to room temperature, the aldol products were obtained with up to 96% ee, which were comparable to the effect with 30 mol% of L-proline as catalyst.

在0℃～室温下，以5mol％的1a催化即可获得相当或优于30mol％脯氨酸本身所具有的催化效果，ee值最高可达96％。

We found that when acetone was used as solvent, in the presence of TFA, cis-4-pyrrodin-1-yl-L-proline could catalyze the direct asymmetric aldol reaction between acetone and 4-nitrobenzaldehyde with 84% ee.

研究发现，该催化剂以丙酮为溶剂时，加入催化剂等当量的三氟乙酸可以较好的催化丙酮与对硝基苯甲醛之间的直接不对称Aldol反应，得到84%的ee值。

Study on the Crystallization Process of Labeled GL-7-ACA Acylase CA130 Complex 7β-bromoacetyl amino cephalosporanic acid (BA-7-ACA), an analog of glutaryl-7-amino cephalosporanic acid (GL-7-ACA), can inhibit and specifically alkylate GL-7-ACA acylase (CA130) from Pseudomonas sp. 130, forming a carbon-carbon bond between BA-7-ACA and the C-2 on indole ring of Trp-β4 residue of CA130.Here we reported that BA-7-ACA labeled CA130 (BA-C130) could self-catalyze the hydrolysis of BA-7-ACA during crystallization process. The hydrolysis was confirmed to be a reaction analogous to the one of GL-7-ACA by comparative MALDI-TOF (matrix-assisted laser desorption/ionization-time of flight) spectrometry analysis.

二、GL-7-AcA酰化酶CA130标记复合物的结晶过程研究溴乙酰氨基头孢烷酸（7β-bromoacetyl amino cephalosporanic acid，BA-7-ACA）作为戊二酰-7-氨基头孢烷酸（GL-7-ACA）的类似物，不仅能够抑制GL-7-ACA酰化酶CA130的活力，而且能通过在BA-7-ACA和CA130的β亚基第四位色氨酸吲哚环二位碳原子之间形成碳-碳共价键而将CA130特异的烷基化。

The city has well transportation with neighborhoods become a megalopolis. They can share their society, economy, culture and resource. The mega city needs to operate efficiently. The population and globalization catalyze the cities in Asia. The density of space development and the efficiency of the operating become the territorial accent. This study is about globalization to arise from mobility space. Taichung city become a megalopolis that is center. The city has ambition to become an international city. It needs to know, how to affront that spaces of ambulant city advance maneuver.

在面对城市规模巨大化下，城市运作的效率成为发展上的方向，而其中以亚洲城市由於人口及在全球化的催化下，於空间上发展的密度与使用上的效率更具有区域上的特色，故本研究试图在全球化下的流动空间的想法上，重新为已具有都会区人口规模的台中市，寻求一个城市目标朝向国际化发展的城市，应如何面对流动城市的发展策略。

There are many kinds of catalysts that can catalyze the amination of fatty alcohols, among them the catalysts based on Cu and Ni are most popularly used.

脂肪醇催化剂有多种类型，而以Cu、Ni元素为基础的催化剂的应用最为广泛。

In chemistry industry, Zinc Oxide is widely used as a catalyze agent and a decoke vulcanization agent, when composing carbinol it is use as a catalyze agent and when composing ammonia it is used as a decoke vulcanization agent.

在化学工业中，氧化锌被广泛用作催化剂、脱硫剂，如合成甲醇时作催化剂，合成氨时作脱硫剂；纳米氧化锌的表面高活性可以提高催化剂的选择性能和催化效率，具有广泛的潜在应用市场。

Lacunaria maize starch can be resulted from theα-amylose-catalyze hydrolysis, but the surface of potato starch was just eroded under the same condition. The crystallinity of starches can not be increased through theα-amylose-catalyze hydrolysis.

淀粉酶催化水解时，玉米淀粉颗粒形成多孔状，马铃薯淀粉只是颗粒表面被腐蚀水解，酶解不能提高淀粉的结晶度。

The catalytic system composed of NHPI and transition metal ion can catalyze effectively ethane into acetic acid,cyclane into dicarboxylic acid,toluene into benzoic acid,alkene into epoxide,alkyne into acetylenic ketone,and amide into imide;NHPI used alone can catalyze adamantane to be carbonylated,hydrogen peroxide prepared by oxidization alcohol;NHPI combined with as...

NHPI与过渡金属离子组成的催化体系能高效地催化乙烷氧化为乙酸、环烷烃氧化为二元羧酸、甲苯氧化为苯甲酸、烯烃氧化为环氧化物、炔烃氧化为炔酮、酰胺氧化为酰亚胺；NHPI单独使用能催化金刚烷发生氧化羰基化反应、催化氧化醇制取过氧化氢；NHPI与有机助催化剂如偶氮二异丁腈、溴化季铵盐、蒽醌和醇等也能催化分子氧氧化反应。

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。