氧化剂

Objective To study the inhibitory effects of antioxidants on methylmercury-indueed lipid peroxidation.

目的探讨抗氧化剂对甲基汞诱导的脂质过氧化的拮抗作用。

The highest total flavonoid rate was 1.127%. An all-round evaluation for the antioxidant activity of the flavonoids extract from zizania-bract was carried out with that of ascorbic acid as the control. The evaluation indexes included the cleanup rate of the polyphenolic extract towards superoxidized anionic radicals, hydroxyl radicals, DPPH free radicals, the deoxidizing ability, and the antioxidant activity towards the peroxidize of lipids and edible oils.

采用抗坏血酸作为对照，全面测定了茭白苞叶总黄酮对超氧阴离子自由基、羟基自由基、DPPH自由基的清除率，以及还原能力、抗脂质过氧化活性和对食用油脂的抗氧化性的影响，结果表明，白苞叶中的总黄酮是一种有开发价值的天然抗氧化剂。

Covering the chemistry of liquid-phase oxidation of organic compounds, this book includes the results of analysis with the parabolic model as applied to reactions of peroxyl radicals with C-H bond of different organic compounds.

在有机化学和生物学方面的氧化和抗氧化剂有機化学と生物学の面でのアンチオキダントと酸化します包括有机化合物的液相氧化的化学，这本书象适用于peroxyl 激进主义者与不同的有机化合物的C-H 契约的反应的那样用抛物线的模型包括分析的结果。

Carnosic acid, an antioxidant polyphenol derived from Sage and Rosemary, is a lipophilic antioxidant that scavenges singlet oxygen, hydroxyl radicals, and lipid peroxyl radicals, thus prevents lipid peroxidation and the disruption of biological membranes.

鼠尾草酸则是存在於鼠尾草和迷迭香中的多酚类化合物，在过去实验指出鼠尾草酸也是一种抗氧化剂。

The antioxidative action may involve trapping the initiating radicals generated by AAPH in the bulk phase, inhibiting the propagating lipid peroxyl radicals on the surface of micelles and regeneratingα-tocopherol by reducing theα-tocopheroxyl radical.

在均相溶液中，这些化合物单独使用时都是很好的抗氧化剂，但是只有杨梅树素产生了抑制期，其他化合物均降低了引发速率。

In light of the principle of vanadium's valent state change,after samples are dissolved by weak nitric acid,in medium of around 15% nitric acid,the oxidant ammonium persulphate is immediately used to selectively oxidize V~(4+) to V~(5+).

利用钒的价态变化原理，试样以稀硝酸溶解后，在15%左右的硝酸介质中，直接用氧化剂过硫酸铵选择性地氧化V~(4+)为V~(5+)。

In this paper, a new generation polymer of guide-3,4-poly ethylene dioxythio phene was introduced. Preparation processing of PEDT films was studied. Most of principle was recommended. The influence of different process factors on PEDT films properties had been discussed, observing the surface situation ,and studying the relationship between conductivity、surface situation and mensuration of degree of polymerization .

本文介绍了新一代导电聚合物材料PEDT(3，4—聚乙烯二氧噻吩)的主要特点，相关原理，及合成方法，研究发现影响薄膜电导率和致密度的影响因素如：聚合温度，单体和氧化剂配比等，研究了PEDT材料的热稳定性，对PEDT的膜层表面形貌以及分子量的测定方法进行了研究。

When using urea-hydroperoxide as oxygent, just the trimethylphosphine adsorbed on the Lewis acid sites in TS-1 zeolite was oxidized. It further confirmed that the hydroperoxo-titanium species formed by the interaction between the titanium in Lewis acid sites and urea-hydroperoxide are the active oxidation center, and the titanium in the framework as Lewis acid sites enhances the oxidation ability of hydroperoxide. 3. Phenylacetaldehyde and benzaldehyde are found to be the major products in the catalytic oxidation of styrene over TS-1 zeolite, and styrene epoxide is not as speculated detected.

当以过氧化氢尿素为氧化剂时，室温条件下吸附在TS-1分子筛Lewis酸性位的三甲基膦即能被氧化，由此进一步证明，TS-1分子筛中由Lewis酸性位的骨架钛与过氧化氢相互作用形成的过氧化钛物种是三甲基膦氧化反应的活性中心，骨架钛作为Lewis酸中心提高了过氧化氢的氧化能力。

With chromium phosphomolybdate as catalyst and H2O2 as oxidant,catalytic oxidative removing of dibenzothiophene in n-octane under microwave irradiation was studied.

以磷钼酸铬盐为催化剂、过氧化氢为氧化剂，研究了微波辐射加热下模拟汽油中二苯并噻吩的氧化脱除。

Using cyclohexanol as raw material, in presence of sodium tungstate and phosphotungstic acid as catalyst, the technique for oxidizing cyclohexanol to cyclohexanone with hydrogen peroxide were discussed.

以环己醇为原料、钨酸钠和磷钨酸配合为催化剂，探讨了双氧水为氧化剂氧化环己醇合成环己酮的工艺方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。