质子

Note the isosbestic point, indicating a direct reaction of protonated MDNPH with the aldehyde to the hydrazone.

看到色点，显示直接的反应与质子mdnph醛腙的。

The X-ray structure analysis reveals that the metal is in a square-planar N2O2 coordination environment formed by the phenolate-O, the imine-N and the deprotonated amide-O atoms of hydrazone ligand and the N atom of Himdz.

配合物的晶体结构分析表明，中心金属通过酰腙配体的酚基氧原子、亚胺基氮原子、去质子酰胺氧原子以及咪唑的氮原子形成平面四方形的N2O2配位环境。

hydrogenase and hydrogenase are the main types of hydrogenase s and have different s.

氢酶是产氢过程中的关键酶，催化氢的氧化或质子的还原。

In nature, some green algae can produce hydrogen after incubation under anaerobic conditions, during which hydrogenase is synthesized and activated.

自然界中存在于藻类和细菌中的氢酶是高效的催化氢气氧化和质子还原的氧化还原酶，在生物产氢和能量转换过程中发挥着重要的作用。

In nature,some green algae can produce hydrogen after incubation under anaerobic conditions,during which hydrogenase is synthesized and activated.

自然界中存在于藻类和细菌中的氢酶是高效催化氢气氧化和质子还原的氧化还原酶，在生物产氢和能量转换过程中发挥着重要作用。

According to the metal atoms within hydrogenase , it can be classified as NiFe- hydrogenase , Fe- hydrogenase and metal-free hydrogenase .

氢酶是一类催化氢的氧化或质子还原的酶，它在微生物产氢过程中扮演着重要角色。

Since the first crystal structure of the Fe-only hydrogenase was published in 1998, intensive efforts have been spent on the structural and functional models of Fe-only hydrogenase due to its great capability of catalyzing the reduction of protons to molecular hydrogen at extraordinarily high rates.

自从1998年唯铁氢化酶的第一个晶体结构发表以来，由于它可高效地催化质子还原成氢气，其活性中心的结构和功能模拟受到了广泛关注。

There was hypersecretion of the gastric acid in the brain operation patients.

颅脑手术术后胃酸呈高分泌状态，H2受体拮抗剂和质子泵抑制剂均能显著减少其胃酸分泌。

Nsted acid for the activation of the imine and acetic acid (20 mol %) as the non-chiral proton source for the shift of the keto-enol equilibrium.

94%酸、活化的亚胺乙酸(20摩尔%)的非手质子源为转移的酮-烯醇平衡。

Because the carbonyl in its structure is with strongly absorb-electron effect, so it is a kind of non-proton polarity solvent with high boiling point, high flash point and low melting point, use conveniently for many processing operation such as filtration, distillation, solvent extraction, and so on; it is with very low toxicity, so the harm to human body is inappreciable, and reduce the environment pollution; due to its very strong dissolvability, it can dissolve organic matter, inorganic matter, resin, polymer, etc., and activate all kinds of reagent, mix to dissolve the other high boiling point solvents; it is with very good stability, it is stable under the hot strong alkali and acidity condition, it is with water-resistance and light, oxygen stability.

246℃ m.p：—20℃闪点121℃ flash point： 121℃分子式：C6H12N2O molecular formula： C6H12N2O 分子量128.18 molecular weight： 128.18 二、DMPU的化学性质 Chemical character of DMPU 其结构中由于羰基具有强烈的吸电子效应，因而它是一种非质子的极性溶剂，具有高沸点、高闪点、低熔点，在过滤、蒸馏、溶剂萃取等工艺操作中使用方便；毒性极低，对人体危害微不足道，也减少了对环境的污染；由于它具有极强的溶解性，能溶解有机物、无机物、树脂、聚合物等，并对各种试剂具有活化性质，还能与其它高沸点溶剂混溶；具有极好的稳定性，在热的强碱和酸性条件下都很稳定，还具有耐水性及对光、氧的稳定性。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。