氢氧化物

When substituting MeOH for MeONa on above technology, however, the methyl ester phosphinic acid with double melting points was also obtained, and its crystal phase was clearly different from its counterpart with single melting point.

若将10-羟基-5，10-二氢磷杂吖嗪-10-氧化物和氯化亚砜的作用产物直接在甲醇溶液中回流，也得到双熔点甲酯，它与单熔点次膦酸甲酯具有不同的晶相结构。

The results showed that the H2 produced by coal volatile pyrogenation affects on the reduction of pellet.

结果表明，含碳球团中煤热解产生的氢对铁氧化物有还原作用。

New reactions found in this program include: photoinduced regioselective free radical addition to aromatic imines;photoinduced Dielse-Alder reactions of aromatic imines for synthesis of tetrahydroquinoline derivatives;Photoinduced radical cation mediated selective ring opening reaction of epoxides;Formation of novel macrocyclic crown ethers by photoinduced reaction of diazonaphthaquinones;photoinduced selective desilylation of silyl ethers.

用这种方法成功的发现了下列在有机合成中有意义的新反应：(1)光诱导产生的自由基正离子诱导的自由基对芳香亚胺的区域选择性加成反应；(2)用光诱导的芳香亚胺的Diels-Alder反应合成四氢喹啉衍生物；(3)经光诱导产生的自由基正离子基诱导的环氧化物选择性开环反应；（4）重氮萘酮在环醚中经光诱导反应形成新奇的大环冠醚；（5）硅醚的光诱导选择性脱硅基反应。

The results showed that the activities of catalase, ascorbate peroxidase, peroxidase and dehydroascorbate in apoplast of cucumber leaf inoculated with Sphaerotheca fuliginea were significantly increased, but the activities of superoxide dismutase was obviously decreased; Silicon can remarkably increase the activities of APX, SOD, POD and DHAR and decrease the activity of CAT.

结果表明，诱导接种后，质外体中过氧化氢酶、抗坏血酸过氧化物酶、过氧化物酶及脱氢抗坏血酸还原酶活性显著升高，超氧化物歧化酶活性明显降低；加硅显著提高了APX， SOD， POD和DHAR的活性，降低了CAT活性。

The thermochemical cycle s based on metal oxides were reviewed.

介绍了以金属氧化物为介质的热化学循环分解水制氢。

The protection of AF－1 was observed with the measurement of transudatory rate of LDH ,the breaking rate of DNA and contents of LPO and SOD,Results:The intotoxincation of glutamate was decreased by AF－1 which reduced the transudatory rate of LDH,the breaking rate of DNA and the content of LPO,and increased the content of SOD in culture significantly.

通过测定乳酸脱氢酶漏出率、DNA断裂率、超氧化物歧化酶和脂质过氧化物，观察AF－1药物的保护作用。结果：高浓度的谷氨酸可增加培养神经细胞的LDH释放率和DNA断裂率，并诱导自由基产生。AF－1明显降低谷氨酸的神经细胞毒性，使LDH释放率及DNA断裂率明显降低，LPO含量明显下降，SOD含量明显升高。

objective to observe the protection of typha angustifolial l extract against rats cerebral ischemia reperfusion injury. methods cerebral ischemia reperfusion models of rats were used, 40 rats were divided into 4 groups randomly to observe the activity of brain tissue lactic dehydrogenase and superoxide dismutase and content of malondial dehyde.

目的 观察蒲黄提取物对脑缺血再灌注损伤的保护作用；方法采用大鼠脑缺血再灌注模型；取sd大鼠40只，随机分为4组，给药组分别给予蒲黄提取物0.2g/kg，0.4g/kg灌胃15 d；另设对照组及假手术组；观察脑组织乳酸脱氢酶和超氧化物歧化酶活性及丙二醛含量变化。

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。

METHODS: The model of acute myocardial ischemia of rats was created by ligaturing the left coronary artery and followed with recording changes of EGG, the range of myocardial infarct and the levels of the AST, CK, LDH, SOD and MDA enzymes in blood serum to study the effects of gleditsioside on myocardial ischemia in rats.

采用结扎大鼠左冠状动脉的方法，造成急性心肌缺血模型，通过对大鼠标准Ⅱ导联心电图，心肌梗死面积及血清中天冬氨酸转氨酶、肌酸激酶、乳酸脱氢酶、超氧化物歧化酶和丙二醛的测定，探讨皂荚皂苷对大鼠心肌缺血的影响。

Methods: The model of acute myocardial ischemia in rats was developed by ligaturing the left descending anterior coronary artery. Forty male Wister rats were divided into normal control group, ischemia model group, Xuesetong group and Verapamil group. The effect of Xuesetong on the CPK, LDH, SOD and MDA in serum and myocardium and myocardial infarct range was observed.

采用结扎大鼠冠状动脉左前降支复制出大鼠心肌缺血再灌注损伤模型。40只Wister大鼠分为正常对照组、模型组、血塞通组及维拉帕米组，观察血塞通对大鼠血清磷酸肌酸激酶、乳酸脱氢酶、血清及心肌组织超氧化物歧化酶和脂质过氧化物丙二醛及对心肌梗死范围的影响。

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。