催化的

The protein had the specificity on substrate recognition, which could decompose 3,4-dihydroxybenzoic acid to catechol but not 2,4-dihydroxy- benzoic acid to resorcin. The ligand at C-3 site of benzene ring had no effect on enzyme activity.

蛋白质还具有底物识别的特异性，能够催化3，4-二羟基苯甲酸转化为邻苯二酚，而不能催化2，4-二羟基苯甲酸转化为间苯二酚，这表明苯环上3'位的配基对酶活无影响。

The results show that the reaction of photocatalytic degradation of Rhodamine B follows the surface first law.

以样品对水中罗丹明B的光催化降解性能为评价指标，对样品的光催化性能进行了评价。

When SiO〓-NH〓-Rh-Co complex was used to catalyze the hydroformylation of methyl methacrylate, an optimal conversion of 93.4% and optimal selectivity of 84.4% for the normal aldehyde were both obtained at Rh/Co ratio of 2/1, which were both higher than that catalyzed by SiO〓-SiNH〓-Rh and SiO〓-Si-NH〓-Co momometallic catalysts. Clearly a synergistic action between Rh and Co atoms presented in the complex.

我们以SiO〓-Si-NH〓-Rh-Co催化甲基丙烯酸甲酯的醛化反应，当催化剂中Rh/Co比为2/1时，催化活性最高，可达93.4％，对正构产物β-甲酰异丁酸酯的选择性达到84.4％，都高于单金属催化剂，表明了金属间存在相互作用。

The solvolysis activity can be inhibited remarkably if a small amount of base was added in the medium. And the activity can be enhanced if acid was added.

原料中加入碱性物质可以显著抑制TS-1催化环氧丙烷溶剂解反应的活性；原料中添加酸性物质可以增强TS-1催化环氧丙烷溶剂解反应的活性。

The main action of TiO_2 loaded on stilbite, rectorite, kaolin on azo dye was adsorption . The main action of quartz loading TiO_2 photocatalyst on azo dye was photocatalysis.Surface modification was made on quartz with ( OCH_3 )_3Si(CH_2)_3SH by dry process.

辉沸石、累托石、高岭土负载纳米TiO_2光催化材料对偶氮染料的作用主要为吸附，石英负载纳米TiO_2光催化材料对偶氮染料的作用主要为降解。

The effects of shape, size of TiO〓 particles on the photocatalytical properties were studied.

设计了可方便测定量子产率的光解水催化反应装置，考察颗粒形状、大小等因素对光解水制氢催化作用的影响。

The photocatalytic activity of titanium dioxide thin film was evaluated with the degradation...

以苯酚的光催化氧化作为目标反应，评价了二氧化钛薄膜的光催化活性。

The TiO2particles are anatase crystal form with 10-20 nm in diameter, and the SiO2 particlesare uncrystallized. The TiO2 nanoparticles have good photocatalysis degradationproperties, and the kinetics is the first-order to methylene blue.

二氧化钛粒子为锐钛矿晶型，直径10-20nm，但二氧化硅粒子不呈晶态；制备的二氧化钛纳米粒子具有很好的光催化活性，对亚甲基蓝光催化降解符合一级反应动力学方程规律。

A general theme of these processes is the combination of an enantioselective enzyme with a chemical reagent,the latter being used either to racemise the unreactive enantiomer or alterna...

在催化反应过程中，一般都是对映体选择性酶与化学试剂的相结合，化学试剂一般常用于催化非活性对映体发生去消旋反应或是回收去消旋化过程中的中间体。

A new catalytic kinetic spectrophotometric method for the indirect determination of trace sulfide has been studied. The method was based on the inhibition of sulfide on the iron catalyzed oxidation of xylenol orange by hydrogen peroxide in NH3 medium.

在氨水介质中，硫离子可阻抑Fe催化过氧化氢氧化二甲酚橙褪色，并且催化体系和阻抑体系在570nm处吸光度的差值与硫离子浓度呈线性关系，据此建立了阻抑动力学光度法间接测定痕量硫离子的新方法。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！