氧化还原

Apple polyphenol extracts had stronger deoxidizing capacity, antioxidant activity and scavenging effects on superoxide an...

苹果多酚提取物具有较强的还原能力和抗氧化活性，对脂质过氧化产生的超氧阴离子自由基具有较强的抑制作用，且在试验浓度范围内其最大抑制率优于同浓度二丁基羟基甲苯的效果。

Re-W alloy is oxidized and separated through air lancing reaction in a tubular oxidizing furnace with different temperature zones, and the Re oxide is heated and reduced in H2 atmosphere to obtain high purity Re powder.

将钨铼合金在具有不同温区的氧化气氛管式炉中进行吹扫反应，同时对不同区域温度、吹扫气体流量、反应系统出口气流量进行集中控制，以便在合适的气氛与温度下使钨铼合金充分氧化，并得到有效分离，最终对铼的氧化物在氢气氛中加热还原，制得高纯铼粉。

In terms of experimental results, ammonium persulfate oxidizes antimony trioxide into hydrous antimony pentoxide and is reduced itself into ammonium sulfate in aqueous medium of sulfuric acid.

结果指出，在硫酸介质中，过硫酸铵可将三氧化二锑氧化成固体水合五氧化二锑，自身则被还原成硫酸铵进入溶液。

We have synthesized 4,4'-dinitro-3 4''-dimethyl triphenylamine,(1), in 84% yield in an one-step condensation process between 3,4-dimethyl aniline and 4-fluoro-nitrobenzene. After the auto-oxidation of (1) and the subsequent hydrogenation of the nitro-groups, an AB2 type triphenylamine polyimide intermediate bearing two amine groups and one acid-anhydride group each on individual phenyl ring,{AB2 PI Intermediate}, was prepared successfully. The yields of the autoxidation and the hydrogenation steps are 81% and 90% respectively.

中文摘要本研究以3，4-二甲苯胺及4-氟硝基苯为原料，经一步骤缩合反应得到产率为84 %之4，4'-二硝基-3&，4&-二甲基三苯胺(1)，由(1)经自氧化法后再以氢化法还原硝基，成功地制备出带有二胺基与一羧基的三官能基之AB2型三苯胺中间体(AB2型PI中间体)，自氧化反应与氢化法的产率各为81%及90%。

Keywords Palladium;Titanium oxide;Barium oxide;Aluminum oxide;Nitrogen oxide;Storage-reduction catalyst;Sulfur resistance;Lean burn engine emission

钯； 氧化钛；氧化钡；氧化铝；氮氧化物；储存-还原催化剂；抗硫性能；贫燃发动机尾气

With the reduction mechanisms of the pellets containing carbon in the metal bath and the mechanisms of CVD used to attain nanometer fines, the experiment research on directly obtaining nanometer ZnO powder from the zinc-oxide ore in low grade , have been carried out.

利用含碳球团在金属浴中的还原机理和气相化学反应法制备纳米粉的原理，进行了从低品位氧化锌矿直接制取纳米氧化锌粉的实验研究。

The oxidation-deoxidization between Al and ZrO2 or Y2O3 is one of the mechanisms of high temperature oxidation failure of TBCs. The failure under thermal shock results from the formation of cracks normal to the bond/top coat interface, due to the different coefficients of thermal expansion between bond coat and top coat and the temperature change.

底层与面层之间界面存在的部分Zro，或YZO3被A1还原生成Zr或Y，A1被氧化形成A1203的反应是热障涂层高温氧化失效的原因之一；热震失效的主要原因是由于底层与面层之间热膨胀系数的差异而产生的剪应力与喷涂时产生的内应力之和导致面层产生裂纹。

Fully automatic sample feeding of up to 60 samples into a steel combustion tube, high temperature digestion at 900°-1000°C.Oxygen saving, sensor controlled gas supply.Detection of nitrogen after reduction on tungsten by means of a special low-noise thermoconductivity detector.Carbon determination as CO2 and hydrogen determination as H2O with "purge and trap" technique and TCD detection.

通过装有60个样品的全自动进样器，将样品送入不锈钢的燃烧管内，样品在900° C －1000° C 的高温并通过由传感器控制的加氧装置加入纯氧进行氧化，燃烧气体中的氧化氮被钨还原成氮并通过特殊的低噪音的热导池被检测，其后通过分离装置将 CO2和 H2O 进行分离并通过 TCD 检测得出碳和氢的含量。

The pchloroaniline was prepared by catalytic reduction of pchloronitrobenzene with hydrazine in the presence of an iron oxide hydroxide catalyst.

在氢氧化氧铁催化剂存在下水合肼还原对氯硝基苯制备对氯苯胺，结果表明，氢氧化氧铁作为催化剂具有很好的催化活性、选择性和重复使用性。

Studies show CoQ10 can exist in the form of ubiquinol and ubiquinone, which have quite difference in the ability of antioxidation.

然而，CoQ10的作用与其存在的状态应有密切的关联；文献中曾提到CoQ10具有氧化态与还原态，其抗氧化之能力也有所差异。

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。