过氧化氢物

It has been detected in a wide range of aerobe. The decomposition of hydrogen peroxide catalyzed by catalase is a bi- substrate enzyme-catalyzed reaction. As Chance proposed, it is an overall first-order reaction.

过氧化氢酶催化过氧化氢分解是一个两底物酶促反应，依照Chance提出的机理，反应速率方程具有一级反应方程的形式。

The first part is about the mimicking of 〓 by using dioxotetraamine Cu complex; the second part is about the mimicking of Mn-Catalase by using benzimidazole Mn complex.

本论文主要做了两个方面的研究：第一部分以二氧四胺类Cu配合物对〓的模拟；第二部分以苯并咪唑类Mn配合物对Mn-过氧化氢酶的模拟。

It begins to inactivate when the temperature is beyond 40℃. However, CDH has the ability to resist high concentration of H2O2.CDH catalyze a typical reaction of double substrates and double products, which fits the Cleland'sPing-Pong nmechanism.

CDH具有很强的耐受过氧化氢的能力，在50mmol/LH2O2下保持12小时，仍保存近80%的活力，CDH催化的是一典型的双底物双产物反应，符合Cleland的兵乓反应机制。

The epoxidation of propylene to propylene oxide, using cumene hydroperoxide as oxidant, molybdenum-glycol complex as catalyst and ethanol as solvent, has been investigated.

研究了以钼－醇配合物为催化剂，过氧化氢异丙苯为环氧化剂，乙醇为溶剂的丙烯一步氧化制环氧丙烷的反应。

Superoxide dismutase (EC 1.15.1.1;SOD) is a metal-containing enzyme that widely exist in organisms. It catalyzes the dismutation of superoxide free radical and produces hydrogen peroxide and oxygen.It plays an important role in protecting the plasmalemma from the reactive oxygen species.A recombinant plasmid pPICZA-sodM18 was constructed and after its linearization was transferred into chromosome of Pichia pastoris GS115 by electroporation.

超氧化物歧化酶(Superoxide dismutase；EC 1.15.1.1；SOD)是广泛存在于生物体内的金属酶，是机体内唯一以超氧阴离子自由基(O_2~-)为底物的酶，它能专一地催化O_2~-的歧化反应，生成过氧化氢和氧气，能有效的抵御氧自由基和其他氧化物自由基对细胞质膜的毒性，对机体防御氧化损伤起着十分重要的作用。

In order to investigate the relationship between ammonia in the sediment and the physiological and biochemical characteristics of macrophytes, Vallisneria natans L and Elodea nuttallii were planted in the sediments of seven different concentrations of ammonia.

和伊乐藻Elodea nuttallii两种沉水植物的植株鲜物质量的变化、干物质量、根系的活力、过氧化物酶和过氧化氢酶活性，以期明确这两种沉水植物与水体底质浓度之间的关系。

After treated by alkaline peroxide, the extractive in jack pine TMP long fiber decreased evidently, its surfaces produced large numbers of carboxyl. The H2O2 dosage in AP treated process had evident effect on brightness of sheet. The action of alkali in AP process is to make structure of cell wall loose.

碱性过氧化氢处理 TMP长纤维组分能明显降低浆中抽出物含量，纤维表面产生大量的羧基；过氧化氢用量的变化对白度影响较为明显；碱的作用是使细胞壁结构变得松弛，随着用碱量的增加，抽出物含量明显降低，羧基含量大幅度增加，纤维表面O/C比也略有增加，各项强度均增加。2。

These products include sodium percarbonate, percarbamide, 4Na 2SO 4·2H 2O 2·NaCl adduct, tertiary amine oxides, hydrazine hydrate, dihydroxy benzene, quaternary ammonium salt hydrogen peroxide and methylethyl ketone oxime.

介绍了近期国外过氧化氢在部分化学品合成中应用研究新进展，产品包括过碳酸钠、过碳酰胺、4Na2 SO4·2H2 O2 ·NaCl加合物、叔胺氧化物、水合肼、二羟基苯、季铵盐过氧化氢和甲乙酮肟。

Inorganic chemistry ; hydrogen peroxide ; review ; sodium percarbonate ; percarbamide ; 4Na 2SO 4·2H 2O 2·NaCl adduct ; tertiary amine oxides ; hydrazine hydrate ; dihydroxy benzene ; quaternary ammonium salts hydrogen peroxide ; methylethyl ketone oxim

无机化学；过氧化氢；综述；过碳酸钠；过碳酰胺； 4Na2SO4·2H2O2·NaCl加合物；叔胺氧化物；水合肼；二羟基苯；季铵盐过氧化氢；甲乙酮肟；合成；催化剂；质量；安定性；收率

It also cut the level of hydroperoxides, another group of oxidising agents that cause cell damage.

同时它还降低了过氧化氢物的含量，过氧化氢物是另外一族能导致细胞破坏的化合物。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。