氧化物

Comparing with the old process, the new process makes the content of oxygen half remain, the lowest is 10.9ppm and the average content is 15ppm; the total content of oxide inclusion decreases 45%, the lowest is 16ppm and the average content is 17. 5ppm. The notch toughness value of wheel in the new technology is much increased than that in injecting CaSi powder, in wire-feed and in the conventional process, the notch toughness value at low temperature, such as at -40℃ and -60℃ increased over 40%.

工业性试验结果表明，采用本研究的工艺条件，不仅使车轮钢全面满足GB8601-88和GB8602-88标准中A级车轮的质量要求，而且也满足了铁道部对200km/h高速车轮提出的冶金质量要求，与原工艺相比，使钢中氧含量减少一半，最低为lO.9ppm，平均为15ppm：氧化物夹杂总量下降了45％，最低为16ppm，平均为17.5ppm，车轮的冲击韧性值得到了明显提高，其中-40℃和-60℃的低温冲击韧性值较喷粉、喂线及原工艺高40％以上。

MAIN OUTCOME MEASURES: Level of blood lipid and activities of SOD and catalase in rats.

主要观察指标：大鼠血脂水平和超氧化物歧化酶及过氧化氢酶的活性。

Test indicates that caterpillar fungus can increase the superoxide dismutase in liver tissue and restrain the formation of lipid peroxide.

实验研究表明，冬虫夏草能提高小鼠肝组织超氧化物歧化酶的含量，能抑制脂质过氧化物的形成。

Ceder, MIT professor of materials science and engineering, who led the project.

但在2月17日的文章中描述的锂镍锰氧化物可以从根本上改变整个混合动力汽车工业，此改良项目的负责人，MIT 材料及工程学教授吉布兰希德说，该工业有"巨大的增长潜力"。

The small safety risk posed by lithium cobalt oxide is manageable in small devices but makes the material not viable for the larger batteries needed to run hybrid cars, Ceder said. Cobalt is also fairly

镍钴氧化物在小型电子设备中的危险是比较小的，也可以被适当地处理掉，但这意味着它不适合构成可驱动混合动力汽车的大型电池，希德教授说道，此外，钴也是比较昂贵的一种材料。

The preparation process includes the following steps: dissolving activator and RE oxide in the molar ratio of 0.01-0.02 in concentrated nitric acid and heating to dry, dissolving the obtain RE nitrate in deionized water to obtain solution of RE nitrate; dissolving soluble tungstate and surfactant in deionized water to obtain tungstate solution; mixing the RE nitrate solution and the tungstate solution through stirring to reaction for 25-60 min to obtain white precipitate; hydrothermal reaction of the precipitate in a reaction kettle at 100-260 deg.c for 24-72 hr; centrifugally separating, washing and drying to obtain the product.

浓硝酸的加入量保证稀土氧化物溶解就可以，过量的硝酸可以加热除去；将可溶性钨酸盐和表面活性剂溶解于去离子水中，得到钨酸盐溶液，表面活剂性的加入量为反应原料重量的0-30wt％；将稀土硝酸盐溶液加入到钨酸盐溶液中搅拌，发生沉淀反应，磁力搅拌时间为25-60分钟，得到白色沉淀；将含有沉淀物的溶液作为前驱物加入到反应釜中，发生水热反应，反应温度为100-260℃，反应时间为24～72小时；离心分离，洗涤，干燥，即得所需产物。

Aim To affect COD removal efficiency of wastewater by using copper and cerium oxide catalysts.

目的研究Cu／Ce复合金属氧化物对废水催化氧化程度的影响。

Results The activity of copper and cerium oxide catalysts were better than that of copper nitrate or cerium nitrate.

结果Cu／Ce复合氧化物催化剂对吡虫啉农药废水具有较高的催化活性。

Its proved by the analysis of reactive mechanism that the support of cerium complex metal oxide had favorable redox synergistic effect between the metals and the active component Pd.

7反应机理探讨分析表明：铈复合金属氧化物载体对主活性组分Pd具有较好的氧化还原协同作用。

The results show that there are little difference of CO sensitivity between precipitation transformation method and sol-gel method, the sensitivity of copper oxide loading on zirconium oxide or cerium oxide is better than that of loading on alumina or silicon dioxide, the optimal calcinations temperature is 500 Celsius degree and the optimal copper content loading on cerium oxide is twelve percent.

实验结果表明，材料的制备方法对气敏性质的影响不大；锆铈基氧化物的气敏性质较高，而Al2O3，SiO2作载体时效果要差一些；焙烧温度在500℃时对CO具有最好的灵敏度；当负载在氧化铈载体上的氧化铜含量为12%时，对CO的气敏性质最高。

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。