氢解作用

The dechroming mechanism of organic acid from chrome shavings was studied from the following aspects,the depolymerization of complex compound,the replacement of H+ and the replacement of organic acid radical anion.

从络合物解聚、氢离子取代和有机酸根阴离子取代3个方面，探讨了有机酸的脱铬机理，认为氢离子的取代和有机酸阴离子的取代起主要作用。

Glyceraldehyde-3-phosphate dehydrogenaseis known for its pivotal role in glycolysisasa classical glycolytic protein in cytosolic energy production.

3-磷酸甘油醛脱氢酶作为一种糖酵解蛋白在糖酵解的能量产生中发挥着重要作用。

Amino alcohol via LAH reduction and hydrogenolysis.

经过LAH还原和氢解作用得到了-氨基醇。

The Mn alloying has less effect on environmental embrittlement. The alloy with Mn has higher ambient strength, elevated-temperature strength and larger ductility because of high cleavage strength, high movability of dislocation and high ordertype transformation temperature.

Mn的合金化对合金的环境氢脆作用影响不大，但是加Mn后的合金解理强度得到提高，位错的易动性增强，有序类型转变温度提高，故合金在宏观上表现为室温、高温强度提高、塑性增大，因此Mn的低合金化是改善Fe〓Al基有序合金力学性能的一个重要方法。

It was considered that the rubber,as a hydrogen donor,might take part in the modification of coal tar pitch and formed a new asphaltine.

橡胶在改质过程中作为供氢媒介参与筑路油的热解反应，正是煤沥青的受氢作用改善了筑路油的质量。

The effects of shape, size of TiO〓 particles on the photocatalytical properties were studied.

设计了可方便测定量子产率的光解水催化反应装置，考察颗粒形状、大小等因素对光解水制氢催化作用的影响。

Three aspects were included here:The derivatives of dihydrol,2,4,5-tetrazine-3,5-dicarboxylic acid were synthesized via three different routes:(1) four new compounds were synthesized via the reaction bet ween dihydrol,2,4,5-tetrazine-3,5-dicarboxylic acid, thionyl chloride and corresponding alcohol ;(2) first ,dimethyl dihydro-1,2,4,5-tetrazine-3,5-dicarboxylate wer e synthesized, then ,another four new compounds were obtained t hrough the alcoholysis under the catalyst ;(3) three acylamines were got through the ammonolysis betw een dimethyl dihydro-1,2,4,5-tetrazine-3,5-dicarboxylate and amines.

本论文分别通过三条不同的路线合成了1，4-二氢-3，6-二甲酸-s-四嗪的衍生物：(1)通过1，4-二氢-3，6-二甲酸-s-四嗪与氯化亚砜和相应的醇反应，制备了四个新化合物；(2)合成1，4-二氢-3，6-二甲酸甲酯-s-四嗪，在催化剂的作用下，与高沸点的醇进行酯交换反应，合成了四个新化合物；(3)合成1，4-二氢-3，6-二甲酸甲酯-s-四嗪后，与胺进行氨解反应，合成三个新的1，4-二氢-3，6-二甲酰胺-s-四嗪化合物。

It's found that th e activation of alloy was improved with increasing the concentration,temperature and immersing time of alkaline solution,the reason is that the Zr-rich surface of alloy was conversed to Nirich surface because of the strong erodent action of alkaline solution,this catalyzes ...

实验发现：储氢合金电极的活化性能随碱液浓度增大、温度升高以及浸泡时间的延长得到改善，主要由于KOH的强腐蚀性使合金表面由富Zr层转化为富Ni层，为氢的吸附离解起到催化作用，总结出最佳KOH处理液的实验参数：6mol/L、80℃、浸泡 2 4h ，在此条件下合金电极循环两周即达最大放电容量。

The results show that although both Ni substitution and Mg vacancies are effective in desorbing hydrogen at lower temperatures, the substitution of Ni at the Mg site is energetically more favorable than the formation of Mg vacancies. The Ni atoms of NiF2 can replace some Mg atoms of MgH2 systems, the reaction of NiF2+3MgH2=MgF2+Mg2NiH4 during mill process is accelerated, thus, MgH2 with the higher stability can be changed into Mg2NiH4. Because of a ternary hydride Mg2NiH4 with lower stability forming, the dehydrogenating properties on Ni doped MgH2 systems are improved.

结果表明：Ni替代Mg和创造Mg空位对MgH2体系解氢而言，均发挥有益作用，而形成Mg空位所需能量(6.51 eV)高于Ni替代Mg所需能量(2.12 eV)，表明低温下Ni替代Mg对MgH2体系解氢而言更有利，至此NiF2中的Ni替代MgH2中的Mg，有利于加速化学反应NiF2+3MgH2=MgF2+Mg2NiH4向右进行，使结构稳定的MgH2发生转变，生成结构不稳定的Mg2NiH4，这样体系解氢过程不是通过MgH2，而是转变为通过Mg2NiH4进行，因此，Ni掺杂提高了MgH2体系的解氢性能。

The results show that: when the biomass is blended with coals of different metamorphic grade,the quantity of hydrogen sulphide is influenced obviously.

生物质与煤共热解时，在380℃以前析出的H2S的浓度和析出量都比煤单独热解时的高，且随着生物质加入比例的增加而增加，这是生物质加氢作用的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。