氧化还原

Based on oxidation-reduction reaction, a novel BCS method was established for determination of antioxidant capacity of Chinese herb.

通过氧化还原反应检测中药的抗氧化活性，建立了一种测定中药抗氧化活性的新方法。

Chromic trioxide and chromium hemitrioxide are determined with iodometry, the coefficient of variation of chromic trioxide is 0.056%, and the recovery of marked compound is 99.82-99.83%; the coefficient of variation of chromium hemitrioxide is 1.45%,and the recovery of marked compound is 98.55-99.26%; iron is determined by complexometric titration, the coefficient of variation of iron is 1.73%, and the recovery of marked compound is 99.12-99.23%;sulfate is determined by complexometric titration, the coefficient of variation of sulphate is 0.16%, and the recovery of marked compound is

Analysis Of The Chromium Electroplating Wastewater By Oxidation-reduction And Complexometric Titration-化学工程与工艺-本文采用氧化还原滴定法与络合滴定法对镀六价铬的废水中铬酸酐，三氧化二铬，铁和硫酸根的含量进行了测定：铬酸酐和三氧化二铬用碘量法测定，铬酸酐的变异系数为0.056%，加标回收率为99.82-99.83%，三氧化二铬的变异系数为1.45%，加标回收率为98.55-99.26%；铁用络合滴定法测定，其变异系数为1.73%，加标回收率为99.12-99.23%；硫酸根用络合返滴定法测定，其变异系数为0.16%，加标回收率为

Nitrite oxidoreductase was responsible for the nitrification of nitrite-oxidizing bacteria, which was coded by norB gene and others.

硝化菌主要由两大生理群组成：氧化氨氮为亚硝酸盐氮的是亚硝酸菌；氧化亚硝酸盐氮为硝酸盐氮的是硝酸菌，硝酸菌中负责硝化作用的酶是亚硝酸氧化还原酶，这个酶由norB等基因编码，因而对这个酶和基因的研究将有助于氮污染的控制和防治。

Nitrite oxidoreductase is the key enzyme responsible for the oxidation of NO2- to NO3- in nitrite-oxidizing bacteria.

亚硝酸盐氧化还原酶(nitrite oxidoreductase， NXR)是硝化细菌将亚硝酸盐氧化为硝酸盐的关键酶，广泛存在于亚硝酸盐氧化菌中。

Methane ; Oxidative coupling ; Sodium tungstate ; Manganese oxide ; Supported catalyst ; Redox mechanism

甲烷；氧化偶联；钨酸钠；氧化锰；负载型催化剂；氧化还原机理

It is found that the indirect electroreduction of maleic acid to butane diacid was achieved by Ti~/Ti~ redox system on the nanocrystalline TiO2 film surface, the electrode reaction mechanism is the called catalytic mechanism.

其中TiO_2/Ti_2O_3电对对马来酸具有异相电催化还原活性，纳米TiO_2膜中的Ti~/Ti~氧化还原电对作为媒质间接电还原马来酸为丁二酸，反应机理为电化学偶联随后化学催化反应机理。

The physicochemistry properties of the raw ore and its meaning on geochemistry The earthy black weathered mineral has strong oxide-reducing and acid-base activites. When it reacts with hydroxylammine hydrochloride and inorganic acid, the large number of RE and pb in it can be dissolved in aqueous solution.

原矿的物理化学性质及地球化学意义黑色土状风化物具有较强的可还原性和酸碱活性，它对稀土和Pb等的吸持作用受环境pH值和氧化还原电势影响很大，其中的稀土和Pb可在原矿与还原性物质和酸性物质反应时被溶解出来。

The oxidation of naphthols and 2-naphthylamine under the copper amine complexes led to some novel reactions and products.

本文利用简单易得的小分子有机胺与铜盐制成络合物，模拟氧化还原酶，通过改变铜胺配比等因素来调整催化剂活性中心的配位状态，从有机合成的角度研究其对萘酚类和2-萘胺等底物的氧化性质和催化氧化性质，发现了一些新颖的仿生氧化反应和产物。

This thesis took the complexes of cupric or cuprous salts with small molecular amines to mimic oxidoreductases. The coordination environment of the active centers of the catalysts can be modified by changing the ratio of copper/amine. The oxidation of naphthols and 2-naphthylamine under the copper amine complexes led to some novel reactions and products.

本文利用简单易得的小分子有机胺与铜盐制成络合物，模拟氧化还原酶，通过改变铜胺配比等因素来调整催化剂活性中心的配位状态，从有机合成的角度研究其对萘酚类和2-萘胺等底物的氧化性质和催化氧化性质，发现了一些新颖的仿生氧化反应和产物。

Carbonyl reductase is a monomeric oxidoreductase that catalyzes the NADPHdependant reduction of a variety of quinones, ketones, and aldehydes. It is widely distributed in the cytoplasm of various tissues of mammalian and non-mammalian species, and is involved in detoxification, physical regulation, as well as in drug metabolism.

羰基还原酶是一类依赖于辅酶NADPH催化各种醌、酮和醛等物质还原的单体氧化还原酶，它们广泛分布于哺乳动物和非哺乳动物各种组织的细胞质中，具有解毒、生理调节和药物代谢等重要功能。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。