查询词典 catalyzing

The aim was to study the feasibility of catalyzing the transesterification of 3-N-butylphthalide by lipase in nonaqueous media.

［目的］研究在非水相介质中脂肪酶催化丁基苯酞的转酯化可行性。

Objective The aim was to study the feasibility of catalyzing the transesterification of 3-N-butylphthalide by lipase in nonaqueous media.

研究在非水相介质中脂肪酶催化丁基苯酞的转酯化可行性。

Olid super acid of SO_4~(2-)/ZrO_2 and SO_4~(2-)/SnO_2 type have attracted much attention for its strong acidity and good performance in catalyzing organic synthesis reaction, while fewer reports on modification and application of SO_4~(2-)/Fe_2O_3 have been made.

O_4~(2-)／ZrO_2、SO_4~(2-)/SnO_2型固体超强酸因其较强的酸性，在催化有机合成反应中具有较高的活性而备受关注，而关于SO_4~(2-)／Fe_2O_3固体超强酸的改性及应用的报道相对较少。

For very long time, many research groups focus on using more than a stoichiometric amount of a chiral auxiliaries to obtain high enantioselectivity. There were mainly two sorts of processes reported on highly catalytic asymmetric addition of Grignard reagents to aldehydes. The former case was to transform Grignard reagent RMgX into other organometal reagents such as R_2Zn and R-Ti derivatives via complicated procedures at extremely low temperature. The later case was to link a chiral ligand to Mg in the form of organomagnesium amides or use chiral amine ligand catalyzing the alkylation of aldehydes.

格氏试剂对醛的不对称加成的报道大多需要大量的手性助剂以获得高的光学活性，而高度催化的格氏试剂对醛的不对称加成主要通过两种途径进行：一种是把格氏试剂转化成其他的有机金属试剂如R_2Zn和R-Ti化合物再对醛进行加成，反应通常在低温下进行；另一种是利用手性镁胺作为中间体或直接用手性胺催化来完成此反应。

In conclusion, our results showed that mPGES-2 might be involved in the processes of fertilization, oocyte/early embryo transport and early embryo development by catalyzing PGE2 synthesis in oviductal epithelium.

这些结果表明，mPGES-2 可能通过输卵管上皮细胞中合成的PGE_2，间接参与输卵管中进行的受精、卵母细胞和早期胚胎的运输，以及早期胚胎发育等过程。

Contrasted with the activity of the same reaction in oil-water double phased system, the hydrolyzing behavior of Camlicla Lipolytica Lipase in reversed micellar systems is much like that in oil-water double phased system. The stability and catalyzing activity are both enhanced and give rise to "superactivity". except in reverse micelles composed of cationic surfactant.

实验表明，脂肪酶CLL在反胶束体系中催化水解反应的行为与油-水双相体系中的行为大体相似，在阴离子和非离子型表面活性剂构建的反胶束中，酶的稳定性和催化活性都有所增加，呈现&超活性&。

Triphenylmethyl chloride can react selectively with the 30-hydroxil group of glycyrrhetol under the catalyzing effects of three ethyl amine and dimethyl amino-pyridine.This condition of the reaction has an important value for the selective protection of 30-hydroxil group of glycyrrhetol.

三苯氯甲烷在三乙胺和二甲氨基吡啶等碱性催化下与甘草萜醇的C30-位羟基进行选择性缩合反应，此反应产率较与C3-位羟基化反应的要高，此种反应条件在甘草萜醇C30-位羟基的选择性保护中具有重要的价值。

The results suggested that MoO42- could abate pH decrease and Cl- enrichment, and inhibit the auto-catalyzing acidification effect inside the OCC, so retard the development of underscale local corrosion obviously.

结果表明，MoO42-能有效地减缓闭塞区内pH值降低及Cl-浓集、减弱酸化自催化效应、抑制垢下局部腐蚀。

Insurers have a key role to play in creating solutions to climate change and actuaries have a significant role to play in catalyzing that action into hard facts, he said.

保险公司有一个发挥关键作用，在建立气候变化和精算师的解决方案有重大作用，发挥催化成铁的事实采取行动，他说

The improved method of konjac glucomannan carboxy methylation was proposed in this paper according to the effects of deacetylation. Carboxymethyl KGM were synthesized by blending KGM with etherification agent first and then basifying and catalyzing in ethanol. Basifying first and then etherifying prepared traditional carboxymethyl KGM.

针对脱乙酰基的这种影响进行羧甲基化方法的改进，在乙醇介质中先混合醚化剂，再进行碱化催化反应制备羧甲基魔芋葡甘聚糖，并通过与传统的先碱化再醚化的KGM羧甲基改性方法比较，达到乙酰基脱出顺序上的不同。

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。