金属氢

Time course of expression of hydrogenase activity showed that the derepression of hydrogenase activity depended on nickel.

除镍外其他二价金属离子如钼、铜、锌、钴、铁、镁、锰、钙等未发现对吸氢活性有促进作用。

Hydroperoxide decomposition into radicals is accelerated by various catalysts, notable the transition metals.

氢通过氧化物分解为自由基的过程，可被各种催化剂加速，特别是过渡金属。

The higher selectivity to isopentenes, however, was regarded as a consequence of both insufficient active sites for further hydrogenation of isopentenes to isopentane and lower electronic interaction between Pd and the alumina surface.

而较高的选择性则可归因於没有足够的钯活性中心可供异戊烯进一步氢化生成异戊烷以及钯金属和氧化铝间较低的电子效应所致。

And electricity conduction, malleability, ductility, high light reflectivity , and capacity to form positive ions

金属： 具有高电导率、高热导率以及可塑性、延展性和高反光性的物质，在溶解时可以形成正离子和氢氧化物，其氧化物在遇水时并不产生酸。

In the presence of cobalt ion, nearly 100% selectivity to ortho-chloroanilinewas achieved over PVP-Ru/Pt colloids at 100% conversion of o-CNB, with an activity twoorders of magnitude higher than that of monometallic PVP-Ru colloid.

当在反应体系中加入钴离子时，邻氯硝基苯被高选择性地氢化为邻氯苯胺(邻氯硝基苯转化率为100%时，选择性～100％)，同时，反应的活性比PVP-Ru单金属胶体提高了约两个数量级。

In addition,the one complex containing benzoaza-15-crown-5 pendant has a relatively higher catalytic activity over another one containing morpholine,which may be due to the preponderant effect of hydrophobic environment of the former.

Schiff碱类金属配合物除在氢化反应、环氧化反应、聚合反应、仿生催化氧化等方面得到广泛的应用外[5]，近两年来，我们发现Schiff碱金属配合物也能有效地促进酯的水解或剪切4

By comparison, multivalent transition metal halides have the best catalytic activity to the Mg-based hydrogen storage materials.

比较发现，多价态过渡族金属卤化物对镁基储氢材料具有最好的催化作用。

WithinPMAO LB films,because the distance between the metal ions is no morethan 0.3nm,the carboxylate groups of a molecule form a nanoparticle(the size is less than 0.2nm)by the hydrogen bond or metal ion asthe bridges.

实验表明，在这种高羧基密度的聚合物中，由于羧基距离较近(＜0.3nm)，羧基通过氢键或金属离了为桥在分子内聚集成纳米团簇(＜2nm)。

The optimal output power of ultrasonic wave was 80 W and the temperature was 50℃.

制备过程中，超声波的引人能够提高活性组分的分散性，改善活性组分的粒径，催化剂的催化加氢性能得到明显改善，超声波辅助金属诱导化学镀Ni-B/MgO催化剂的最佳输出功率为80W，制备温度为50℃。

In this paper,by considering the characteristics of magnesium resources in salt lakes in China,the research progress in the preparation and utilization of magnesium hydroxide,magnesium oxide,magnesium metal and alloys,magnesium oxychloride cements,and ...

本文针对我国盐湖镁资源的特点，综述了和盐湖镁资源开发利用相关的氢氧化镁、氧化镁、金属镁、镁合金、氯氧镁水泥和镁质晶须的开发及研究进展，并对我国盐湖镁资源的开发利用提出了一些建议。

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。