氧化剂

Regarding the thermobaric explosive further tests, the research showed that the compressive stress was 6.699MPa; The tensile stress was 0.716MPa; Heat sensitivity was 288℃(5s); The anti-overload capacity may withstand 1.0×104g launch overloads and smaller than 2×105g the impact deceleration overload; first decomposition temperature was 251.9 ℃, highest exothermic peak temperature was 286.9 ℃; In the compatibility, except the ceresin and Oxidant, the ceresin and the F rubber, the ceresin and Al compatible rank could reach to second level of compatibility, the others could reach to the first level of compatibility.

对此粘结-钝感体系包覆的温压炸药样品进一步测试研究显示：抗压强度为6.699MPa；抗拉强度为0.716 MPa；热感度为288℃（5s爆发点）；抗过载能力为可承受1.0×104g的发射过载和小于2×105g的撞击减速过载；安定性为分解温度251.9℃，最高放热峰温度286.9℃；内相容性为除蜡类钝感剂+氧化剂，蜡类钝感剂+F橡胶，蜡类钝感剂+Al相容性等级为2级相容性较好外，其他组分间相容性均为1级，相容性很好。

In the presence of 1b,1c,or 1d(5%,molar fraction),chalcone was stereoselectively epoxidized by sodium hypochlorite with yields range from % to 92% and ee range from 58% to 63%.

以次氯酸钠为氧化剂时，化合物1b、1c和1d可不对称地催化查尔酮的环氧化反应，ee值58%~63%，产率%~92%。

Any salt of chloric acid .

一种强力的氧化剂，形成高氯酸盐。

Coffee is also a major source of chlorogenic acid, a strong antioxidant, which may improve insulin sensitivity.

咖啡也是一个主要来源，绿原酸，是一种强烈的抗氧化剂，可以提高胰岛素的敏感性。

Synthesis process of 2,6-dichloro-3-methylaniline was investigated 3-methylaniline was first N-acetylated with acetic anhydride,then treated with chlorosulphonic acid and ammonia yielding the 2-methyl-4--benzenesulfonic amide,which wasin turn deacetylated,chlorinated and hydrolyzed to the title compound.Hydrochloric acid was used instead of sodium hydroxide in deacetylation and sodium chlorate instead of hydrogen peroxide as oxidant in chlorination.

合成工艺2，6-二氯-3-甲基苯胺调查3-甲基首次N-乙酰与醋酸酐，然后与氯磺酸和氨产量 2-甲基-4--苯磺酰胺基，而擅转乙酰，氯化和水解的标题compound.hydrochloric酸代替氢氧化钠乙酰氯酸钠代替双氧水为氧化剂，加氯。

The free radical scavenging properties of six Aloe species are to be investigated in some modified chemical system. The antioxidant was purified by silica column and thin layer chromatography and analyzed by HPLC. A fraction was purified from A. brevifolia Mill showed the most effective scavenging activities on 〓 and ·OH (66. 01% and 38. 98% respectively). With the analysis of IR spectrum, UV spectrum and mass spectrum, the structure of FA was identifed as 8-C-D-glucopyranosyl-2- [2-hydroxy] propyl-5-methyl-7-hydroxychromone. Its scavenging activity on free radicals is higher than that of aloe-emodin. Its antioxidant activity may be due to the phenoxyl on glucosyl chromone which can be react with free radicals and form relatively stable free radicals.

本研究利用分别产生超氧阴离子自由基和羟自由基的化学模型体系研究比较了不同品种芦荟提取物的清除活性氧自由基的抗氧化作用，进一步利用硅胶柱结合薄层层析法和反相高压液相色谱法，从短叶芦荟叶子中首次分离了具有较强自由基清除能力（超氧阴离子自由基和羟自由基清除率分别为66.01％和38.98％）的成分FA，利用红外光谱、紫外光谱和质谱等仪器分析结果推断出该活性成分的分子结构为8-C-吡喃葡萄糖-2-[2-羟基]-丙基-5-甲基-7-羟基对氧萘酮，它的自由基清除能力高于芦荟大黄素，是一种天然抗氧化剂。

In this work, with the bilateral carotid artery stroke model in Mongolian gerbils, the production and changes of NO and ROS in the pathogenic process of stroke were investigated, and the protective effects and mechanism of Crataegus extracts , a kind of natural antioxidant, on the ischemia/reperfusion damage were also studied.

本工作以蒙古沙鼠双侧颈动脉结扎引起的脑损伤中风模型，研究了中风病程中活性氧和一氧化氮的产生变化，同时探索了一种天然抗氧化剂—山楂提取物(Crataegus Extracts，CE)对缺血再灌注脑损伤的保护作用及机制。

Using o-nitrotoluene as an oxidant,the improved preparation of 7-chloroquinldine was studied by classical Skraup reaction of m-chloroaniline and crotonaldehyde.

研究了以邻硝基甲苯为氧化剂，间氯苯胺和巴豆醛通过经典的Skraup反应制备7-氯喹哪啶的改进方法。

Using o-nitrotoluene as an oxidant, the improved preparation of 7-chloroquinldine was studied by classical Skraup reaction of m-chloroaniline and crotonaldehyde.

研究了以邻硝基甲苯为氧化剂，间氯苯胺和巴豆醛通过经典的Skraup反应制备7-氯喹哪啶的改进方法。7-氯喹哪啶的收率为46.7%，质量分数99.2%；副产物为二氯喹哪啶，收率13.4%。

The method of one-step cyclopentene oxidation with hydrogen peroxide as oxidizer is the trend of research and development of glutaraldehyde in the future because its raw materials are cheap and easy obtainable.

指出吡喃法是目前国内外合成戊二醛普遍采用的方法，以过氧化氢为氧化剂的环戊烯一步氧化法具有原料价廉易得等特点，是今后研究开发的方向。

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。