氢离子

When FeCl3 was added into Cl to form an ionic liquid, the chemical shift of 2-H shifted downfield, which indicated that 2-H was deshielded by FeCl3 and was easy to disengage from imidazole.

通过Cl/FeCl3离子液体的1H NMR分析发现，咪唑环上的氢质子尤其是2-H的化学位移与FeCl3含量密切相关，随着FeCl3与Cl摩尔比的增大，2-H的化学位移向低场移动，说明其去屏蔽作用增强，2-H更容易脱离。

The combination energy includes hydrogen bond energy and electrostatic energy of ionic-pair,and contribution of the later is main.

分析晶胞发现每一个晶胞包含四个EM IM+/C l-离子对，测定咪唑环上C2和C l原子的距离为0.355 nm，认为C2-H…C l间形成了氢键。

As a result, electrostatic interactions and hydrogen bond were identified to contribute to the affinity interaction, while hydrophobic interaction contributed little. Moreover, the importance of electrostatic interactions and hydrogen bond to the affinity changed with pH value.The effect of rate of mobile phase on the retention of insulin was researched and the dynamic adsorption isotherm was got by analyzing the breakthrough data with Langmuir equation.

通过调节流动相的pH值和离子强度，并使用尿素和乙二醇分别对吸附蛋白进行洗脱，详细研究了吸附效果最好的目标蛋白质与肽配基之间的亲和吸附机理，发现静电作用和氢键是二者之间产生亲和吸附的主要作用力，而疏水相互作用对该亲和几乎没有贡献。

Ethene are mainly adsorbed by p electron interaction with high frequency sites in Cs/HMor.

Cs~+离子置换了低频吸附位SiOH中的氢后，转变为高频吸附中心Si-O-Cs。

Results based on experiment and measurement data indicate that, when 244 nm argon ion laser emits 40 mW UV light, the curve of refractive index changes in single mode hydrogen loading fiber is exponential type (Ac=1.632×10-6 t 0.76912), exponential growth is obvious in the beginning, a very good linear region is following, and then refractive index increments reach saturated.

结果表明， 244 nm氩离子倍频激光器输出光功率为40 mW时，普通载氢光纤光致折射率变化量随曝光时间总体上呈现指数分布关系Ac=1.632×10-6 t 0.76912；在曝光时间较短时，造成的光栅强度较弱，光致折射率变化量有明显的指数增长趋势，之后是一段较好的线性区域，这时两个测量模型的结果得到了很好的印证，随着曝光时间的继续增加，光致折射率变化量达到饱和。

A warning signal from the system which indicates high EC or EC ratio of a dairy cow is used to inform the milker to pay attention to the suspected cow. The detection thresholds of EC and ECR to determine whether a quarter or a dairy cow is infected with mastitis correspond with the criterion of SCC = 500×103 cells/ml for quarter foremilk of a dairy cow. The performance of online system for mastitis detection in dairy cows is evaluated with several methods, such as the detection thresholds, running analysis and discrimination analysis.

以分房乳 SCC 500 × 103 cells/ml 作为乳房炎感染与否的门槛值，由牛旁采样分房乳样的检测与分析，探讨影响牛乳 EC 大小的相关因素及其关系，如分房乳中的氯离子浓度、挤乳时间、挤乳前后及乳成份，利用变异数分析探究未感染与感染乳房炎的分房乳之间，其 EC 及 ECR 物理性质，SCC、乳酸去氢酵素及 pH 化学性质及乳脂率、蛋白质及乳糖等乳成份的差异，进而利用统计鉴别分析探讨 EC 相关参数结合乳成份参数对乳房炎检测的准确度。

Whereas the calculation result of electric structure shows that the front valence electron of face (001) of gibbsite is active correspondingly. That is there may be some activity points on this face.

氢氧化铝的(001)面的前线价电子较为活跃，其晶面可能存在与铝酸钠溶液中不同形态的铝酸根离子或者是晶体生长基元发生键合的"活性点"。

The applications of ionic liquids in Heck reaction,oxidation,hydroreduction,Friedel-Crafts and halogenation of alcohol were summarized.

综述了离子液体在Heck反应、氧化反应、加氢还原反应、傅-克反应和醇的卤代反应中的应用。

In the fourth chapter, four new complexes of hydrazide of podophyllic acid with transition metals have been prepared. Elemental analysis, molar conductivity, IR,〓 NMR and TG-DTA were used to characterize them. The results show that general formula of the complexes is M〓(n=0 or 2). The ligand is linked through the carbonyl oxygen and the terminal nitrogen of the hydrazide base to the transition metal ions in bidentate mode.

第四章 合成了四种鬼臼酰肼的过渡金属配合物，通过元素分析、摩尔电导、红外光谱、核磁共振氢谱和热重-差热对配合物进行了表征，研究结果表明，配合物的组成为M〓（n=0或2），配体是通过羰基氧和肼基上的端氮以双齿形式与金属离子配位的。

Recent studies on the dissociation of the hydrogen molecular ion revealed some interesting and unique properties of its dissociating procedure.

最近人们对氢分子离子的光解离过程进行了实验方面的研究，显示出解离过程中的奇异性质。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐