催化作用

With the deposition of Pt, a rough electrocatalytic Pt layer would form on the surface of Ti alloy.

在腐蚀介质的作用下，Pt与Ti的化合物分解，Pt沉淀到晶体表面造成Pt在合金表面形成凹凸不平的Pt电催化层。

In the first part of this work, it has been demonstrated that the ordered mesostructure of OMC plays an important role in the electrocatalytic activity towards the thiols and the destruction of this structure results in the decrease of such properties.

在论文第一部分中，我们介绍了介孔碳在硫醇类物质的电催化活性中所起的重要作用，以及介孔碳结构的变化导致这些性质的下降。

BACKGROUND: One of the key neuropathological changes in Alzheimer disease is that neurofibrils over phosphorylated cytoskeletal protein composed of entwist together, and the phosphorylation of τ protein can be catalyzed by cyclin dependent kinase 5 (CDK5),however whether the phosphorylation of neurofilaments can be catalyzed by CDK5, as well as its role in the pathogenesis of Alzheimer diseases is less acknowledged.

背景：阿尔茨海默病的主要神经病理学特征之一是由过度磷酸化的细胞骨架蛋白如(o，神经细丝组成的神经原纤维缠结，细胞周期蛋白依赖性蛋白激酶5可催化蛋白的磷酸化，但神经细丝是否可被细胞周期蛋白依赖性蛋白激酶5磷酸化及其在阿尔茨海默病发病中的作用却知之甚少。

This catalyst was applied for the liquid phase oxidation of glyoxal to glyoxylic acid.

研究结果表明，V_2O_5/C催化剂对乙二醛的氧化具有良好的催化活性和乙醛酸选择性，反应过程中无需控制溶液pH值即可得到乙醛酸，乙醛酸在V_2O_5/C催化剂作用下不存在过度氧化，乙二醛的氧化产物主要是甲酸和乙醛酸，它们是一平行反应。

This paper reported the synthesis of 2-hydroxyl-1-naphthalene formaldehyde under microwave irradiation with 2-naphthol, hexamethylenamine, solvent of glacial acetic acide, catalysis of sulphuric acid, and discussed the influence of the time and the power of microwave radiation, the proportion and quantity of reagents to the synthetic yield.

利用微波技术，采用2-萘酚与六次甲基四胺为原料，冰乙酸作溶剂，在浓硫酸的催化下合成2-羟基－1-萘甲醛，并考察了微波作用的时间、微波辐射功率、反应试剂的组成与用量等因素对产物产率的影响。

The G α subunit will eventually hydrolize the attached GTP to GDP by its inherent enzymatic activity, allowing it to reassociate with G βγ and starting a new cycle.

G蛋白的作用是分子开关，α亚基结合GDP失活，结合GTP活化。α亚基具有GTP酶活性，可催化结合的 GTP水解，恢复到无活性状态。

In this work, isobutyl isobutyrate was prepared by the condensation of two molecular isobutyraldehyde in the presence of aluminium isobutoxide catalyst system.

依据间歇反应所得一系列数据，确定了异丁醛连续缩合反应工艺流程；考察了以异丁醛为原料，在 5～10℃，停留时间 1 5～ 2h ，在异丁氧基铝催化体系作用下，两分子异丁醛缩合成一分子异丁酸异丁酯；脱除催化剂后，粗产品精制得到纯度≥ 99 5 %的异丁酸异丁酯，异丁醛的转化率≥ 98 5 %，异丁酸异丁酯的选择性≥95 %。

The article introduces the anti-tumor and other pharmacologic effects of the isocoumarin s, reviews the methods of synthesizing isocoumarin s, and places an emphasis on introducing and comparing such methods of synthesizing syntheticroutes of dihydro isocoumarin s as ozone oxidation, organic metal sythesis, catalytic oxidation and so on.

介绍了异香豆素类化合物在抗癌和其他药理方面的作用，综述了异香豆素类化合物的合成方法，着重介绍其中的二氢类异香豆素化合物的臭氧氧化法、金属有机合成法、催化氧化法、分子间成环缩合法等合成方法，并进行了比较。

Resorcinol was prepared from isophthalic acid through liquid-phase catalytic oxidation and subsequent hydrolysis using oxygen in the air as oxidizing agent in the presence of catalyst copper and promoter manganese.

崔建新；肖如亭(天津理工大学生物与化工学院)摘要：以间苯二甲酸为起始原料，在催化剂铜和助剂镁作用下，以空气中的分子氧作氧化剂，通过液相催化氧化继而水解制得间苯二酚。

By using cadmium acetate as catalyst, polyitaconic anhydride was prepared through ring opening polymerization of itaconic anhydride.

环酯单体在不同引发/催化体系作用下的开环聚合是制备可生物降解脂肪族聚酯的主要方法。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。