查询词典 oxidation-reduction

The anodic oxidation reactions of borohydride ion involves a novel and complex reaction system of three hydrogen valence states: protide H(superscript --protium H(superscript 0*-proton H(superscript +. Based on cyclic voltammetry and polarization studies, a multi-step mechanism for the oxidation of BH4-on Cu anode in NaOH solution was presented, and a kinetic expression containing the coverages of BH(superscript - subscript 4) and OH-adsorbed on the surface of Cu anode was deduced by the steady state approximation theory.

鉴于BH(上标-下标 4)阳极氧化反应涉及一个复杂的氢负离子H(上标-下标 4)－氢单原子H(上标 0*)－质子H之间价态转化的新颖反应体系，在循环伏安和极化实验研究基础上，提出了NaOH溶液中BH(上标-下标 4)在Cu电极上氧化反应的多步骤机理，导出了包含表面吸附态BH(上标-下标 4， ad)和OH覆盖率θ和θ的电极反应动力学方程。

The inhibition of pyrocatechol on sulfite oxidation was investigated by oxygen removal and air oxidation tests.

通过除氧试验和空气氧化试验，研究了焦儿茶酚对亚硫酸盐自动氧化的阻滞作用。

The effect of aqueous ethanol (50% v/v) on the activity of purified mushroom polyphenol oxidase has been found to be as follows:(1)The oxidation of catechol or pyrogallol is greatly stimulated,an increase in the rate of oxygen uptake of over 100% having been invariably observed with catechol as the substrate,whereas the oxidation of other substituted o-dihydric phenols is inhibited in 50% ethanol.

三无论有无抗坏血酸的存在，50%乙醇对多酚氧化酶活力的提高程度是一样的，在有一定量的抗坏血酸的存在下，多酚氧化酶对儿茶酚的 Michaelis 常数(25℃)在水溶液及50%乙醇溶液中各为0.072×10~(-3)M 及0.49×10~(-3)M。

The anti-oxidation was measured by the self oxidation method of pyrogallol, Fenton system and lipid peroxidation in rat liver tissue.

利用水提分级醇沉法从关白附中提取可溶性多糖，采用邻苯三酚自氧化、Fenton体系和H2O2致鼠肝脏脂质过氧化的方法，观察体外加入关白附多糖对这些氧化反应的影响。

Compared with classical methods,the main advantage is as follows:raffinose oxidation time may be shortened within 60min;oxidation of hemoglobin can be controlled when the reaction temperature is 20℃;the proportion of MetHb can be controlled less than 5%;the ratio of raffinose to hemoglobin and the final concentration were dependent on the average molecular weight of HBOCs;at the same time,we can obtain HBOCs of different molecular weights.

与经典的方法相比，其主要优点为：高碘酸钠氧化棉籽糖的时间可缩短至60min即可达到完全氧化：在20℃时，便可控制血红蛋白的氧化，可将MetHb含量控制在5%以内；棉籽糖与血红蛋白的比例和血红蛋白的反应终浓度可根据所需要的目的聚合血红蛋白的平均分子量的大小来定；同时调整反应体系可以得到不同分子量大小的HBOCs。

The property of no film, micro-arc oxidation film and chromate film influenced the corrosion of joint samples which was analyzed in same corrosive conditions by calculate the corrosion effects and observe macro-photograph micro-photograph. The corrosive regularity influenced by corrosive condition factors and the corrosion resistance of different thickness of micro-arc oxidation film also be compared.

采用减重法计算连接腐蚀效应并观察试样表面的腐蚀宏观及微观形貌，对比分析了无表面处理、铬化处理及微弧氧化处理在相同盐雾腐蚀条件下对减小镁合金-钢连接腐蚀作用的差异性以及盐雾腐蚀条件参数对镁合金-钢连接腐蚀的影响规律。

Characteristic parameters of coal spontaneous combustion were qualitatively studied and quantitatively determined by coal self-ignition experiment from two aspects: coal oxidation and exothermic which is produced by oxidation.

在井下现场应用研究方面，按照安全规程的要求和采空区瓦斯运移规律结合对实际条件下的漏风规律研究存在发火条件的危险区域，通过实验研究，对指标气体产生和发展规律有了充分认识，有效地指导防火灭火工作。

The oxidation behavior of reaction-bonded silicon carbide,and the effects of process parameters on the oxidation,were studied.

摘 要：研究了反应烧结碳化硅材料900℃的氧化过程以及制备参数和掺杂元素对氧化过程的影响。

The article is carrier with grain of 2 oxidation silicon, use ultrasonic chemistry silver-gilt method, preparation gives silver / 2 oxidation silicon is compound grain, undertook token of silver-colored content analysis and XRD, SEM to the product, studied the performance fighting bacterium of compound grain mainly.

本文以二氧化硅颗粒为载体，利用超声波化学镀银方法，制备出银/二氧化硅复合颗粒，并对产品进行了银含量分析和XRD、SEM表征，重点探究了复合颗粒的抗菌性能。

The anti-oxidation effect is not remarkable when the composite is alone pre-impregnated in HBO2 or TESO soaker. The anti-oxidation property is good for the composite pre-impregnated in H3PO4 or H3PO4+HBO2 mixed solution soaker. The mass loss rate oxidated at 900℃ for 2h are 0.40% and 0.33% respectively.

单独预浸涂以硼酸或TEOS为主的浸渍剂后，试样抗氧化效果不明显，而预浸涂以磷酸或磷酸+硼酸混合液为主的浸渍剂效果较好，900℃，2h静态氧化质量损失率分别为0.40%和0.33%。

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。