查询词典 ions

The research of swelling dynamic behavior shows that the electrolytical ions in swelling media have a great effect on the swelling behavior of PVA gel and the equilibrium swelling ratio in physiological saline is less than that in aqueous media.

溶胀特性研究显示，PVA水凝胶在生理盆水中的平衡溶胀比小于其在蒸馏水中的平衡溶胀比，凝胶的平衡溶胀比随浓度和冷冻－解冻次数的增加而下降，其下降趋势满足幂函数的变化规律；水凝胶的溶胀过程符合溶胀动力学方程。

It was found from the structure-electrochemical studies of cytochrome c that (1) the secondary and tertiary structural changes of cytochrome c are greatly influenced by the reductions of tyrosine residues and iron ions in heme;(2) the reduction reaction dose not induce the configuration transition;(3)α helix, parallel β sheet, antiparallel β sheet and random coil take part in the complex secondary structural transitions;(4) mechanism and parameters about the electroreduction have also been obtained.

在细胞色素c的结构-电化学研究中发现：（1）细胞色素c的二级和三级结构受电场和酪氨酸残基及血红素中Fe的电化学还原的影响，其中酪氨酸残基还原的影响较大；（2）细胞色素c的电化学还原没有发生构型转化现象；（3）细胞色素c参与二级结构变化的构象有α螺旋，平行β折叠，反平行β折叠和无规卷曲；各组份随电位的变化复杂；（4）获得细胞色素c电化学还原的机理和参数

They readly enolize in alkaline soluions to reduce ions such as cu2+ and fe63-. therefore, they are called "reducing sugars".

它们在碱性溶液中易于烯醇化而使cu2+、fe63+之类的离子还原，因此称它们为&还原糖&。

Moreover, the effects of metal ions on the two enzymatic activities were also similar.

另外，金属离子对这两种酶活性的影响也趋于一致。

Printing the work piece is placed on a fully open and the air during the oxygen ions of chemical reaction process, motivate a offsctdruckereien resin curing inks for drying, change business card printing and membership card making ink layer inside the conjunctuval and epiderm don't do it.

印品工件全面开放式的置于期间，空气中的氧气离子化的化学反应过程，能促使胶印树脂油墨的干燥固化，改变制卡和会员卡制作后油墨印层表皮结膜干燥而内部不干的状况。

The effect of four metal ions Cu2+,Ni2+,Zn2+ and Co2+ on the interaction between bovine serum albumin and esculetin extracted from a Traditional Chinese Medicine fraxinus chinensis bark,was investigated by means of UV and fluorescence spectroscopy.

以荧光光谱、紫外光谱技术研究了传统中药有效成分七叶内酯与BSA在金属离子Cu2+、Ni2+、Zn2+和Co2+分别共存时的相互作用。

3A biomimetic catalytic system M_n/CH_3CHO has been used in the selective oxidation of p-chlorotoluene.The effects of the center metal ions,the amount of catalyst and ethanal,the oxygen pressure,the reaction time,and the reaction solvents on the selective oxidation were investigated.

3将M_n/CH_3CHO仿生催化体系用于对氯甲苯的选择性氧化，研究了不同中心金属离子、催化剂用量、乙醛用量、氧气压力、反应时间及反应介质对反应的影响。

This dissertation includes two parts. The first part deals with study on gas-phase reactions of metal ions with ethanethiol molecule by using the laser ablation-molecular beam method and density functional calculations. The second part describes experimental and theoretical study on VUV photoionization of some molecules using synchrotron radiation.

本论文分两大部分，第一部分介绍利用激光溅射-分子束技术研究金属离子与乙硫醇的气相反应，并用密度泛函理论研究了反应形成的团簇离子的结构和特性；第二部分介绍一些分子的真空紫外同步辐射光电离，结合量化计算分析了实验结果。

In the source, lithium ions are extracted from a heated emitter (β- Eucryptite), focused by a electrostatic lens, and neutralized in a charge -exchange cell by sodium atoms.

它是从锂霞石热发射体上引出离子，经静电透镜聚焦，在中和室与钠原子进行电荷交换，通过离子偏转最后获得中性束。

Theoretical analyses indicate that the reduction of internal relative humidity or so_called self_desiccation of HPC may be mainly caused by the increase in the mole concentration of soluble ions in HPC and the fractions of gel water, absorbed water and interlayer water in the total amount of evaporable water.

理论分析表明，混凝土中可溶离子浓度的增大，及凝胶孔水、吸附水、层间水在总可蒸发水量中的比例增大是导致HPC自收缩或自干燥的主要机理。

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