离子

The results show that quartz cannot react with oleic irons at pH=8-10, because it is difficult to combine with metallic irons. On the contrary, clinochlore can adsorb with oleic ions because there are enough active metallic positive ions between the minerals layers which can combine with clinochlore. The clinochlore can be hydrophobic, and so the separation can be realized finally. At pH=9, the clinochlore removal rate is the maximum, the purity of SiO2 is 99.86%, and the recovery of SiO2 is 35%.

结果表明：在pH为8~10的碱性溶液中，粉石英难与金属阳离子缔合，所以，不与油酸根离子结合；而斜绿泥石解离后层间存在活性金属阳离子，可与油酸根离子发生化学吸附产生疏水作用，因而使用反浮选的方法能有效地实现二者的分离：当pH为9时，斜绿泥石的去除率最高，粉石英的纯度达99.86%，回收率为35%。

The diffusion coefficient determination of VO2+ in Nafion 1135 membrane by electrical conductivity measurement was studied.

摘 要：研究通过电导率测定钒离子VO2+在Nafion 1135离子交换膜中的扩散系数的方法。

Oxygen ions from a cold cathode ion-gun have been used tor bombarding the growing thin films.

用一个冷阴极离子枪产生的氧离子轰击淀积过程中的薄膜表面。

A rapid, efficient protocol to detect the toxicity of Cu2+ stress using wheat coleoptile, which is simple, uniformal in structure and sensitive, was established. By using this model, the mechanism of Cu2+ stress leading to the inhibition of cell elongation was also studied.

本文以小麦为材料，研究不同浓度Cu2+对小麦种子萌发和幼苗生长的影响及机理；利用小麦胚芽鞘结构简单、反应敏感的特点，探索建立小麦胚芽鞘快速检测铜离子毒害模式，并利用此模式研究了铜离子胁迫对细胞伸长抑制作用的机理。

The author also changes theproportion of Fe~(3+)、Cu~(2+) in total ions to study the complementariness of Fe~(3+)、Cu~(2+) in thesystem and proves that the replacement of the single catalytic ions with the complicatedSystem Fe~(3+)/Cu~(2+)/H_2O_2 has a good ability of the ability of counter assault against thechanges of pH value.

通过改变Fe~(3+)、Cu~(2+)在总离子中的不同比例，研究了Fe~(3+)、Cu~(2+)在体系中的相互补充、相互促进的作用，证明了用Fe~(3+)／Cu~(3+)／H_2O_2复合体系代替单一的催化离子能有效的对pH的变化起到很好的抗冲击的作用。

BACKGROUND: Glass ionomer cement has been a commonly used filling material in the clinic. However, glass ionomer easily absorbs water and dissolves in early concretionary phase, which can reduce the leak tightness of the edge of obturator, resulting in slightly leakage.

背景：玻璃离子水门汀目前已发展成为临床常用的充填材料，但玻璃离子在凝固的初期易吸水溶解的特性，会使充填体边缘密封性减低，产生微渗漏。

According to the regular condensation polymerization principle, a certain amount of amino terminated polyether D230 and a certain amount of divinyl three amine are mixed uniformly by water, and then a certain amount of hexanedioic acid is added in and stirred for dissolving.

本发明属于工业水处理技术领域，具体涉及一种抑制水中二氧化硅/硅酸盐垢沉积的非离子型聚合物及其制备方法，该聚合物是一种含具有醚键、仲胺键、肽键结构的非离子型共聚物，具体为己二酸/端氨基聚醚/二乙烯三胺共聚物，按照常规的缩聚反应原理，首先用水将一定量的端氨基聚醚D230和一定量的二乙烯三胺混合均匀，然后加入一定量的己二酸并搅拌使其溶解。

The influences of the inclusion of Na~+ into each conformer (C7AB, C7"AB, C7eqB, C5A, C7axB orα"B) of AD molecule on the Ramachandran angles of molecular backbone and the hydrogen bonds in AD moiety were discussed in detail. It was found that in the forming process of bidentate structures of Na~+-AD ion-complexes, the original H-bonds in AD molecule were fully broken down, accompanying with the new formation of the two Na-O bonds.

论文中详细探讨了Na~+-AD络合离子六种构象的空间构型，分析了丙氨酸二肽与Na~+作用过程中AD分子骨架Ramachandran角及分子内N(1)–H(1)…O(2)、N(2)–H(2)…O(1)、N(1)–H(1)…N(2)和N(2)–H(2)…N(1)氢键的变化，研究发现Na~+与AD分子形成双齿结构时，AD骨架中原先的氢键全部被破坏，继而形成了两个新的Na-O键；Na~+与AD分子形成单齿络合离子时，AD骨架中原先的氢键或者得到增强或者断裂之后出现新的强度更大的氢键。

Ionic current signal was detected in progress of combustion in constant volume combustion chamber on this system.

利用火花塞离子电流法建立了相应的离子电流检测系统。

As the sample of Yuanliangshan tunnel in Chongqing-Huaihua Railway, based on the full analysis of groundwater specimens, five chemical equations are designed to calculate evaluating data by the relation of activity, equilibrium constant and Gibbs free energy. According to the two criterion of partial pressure of carbon dioxide and reaction direction, the result calculated shows the groundwater has weak corrasion to carbonate rocks, which should be avoided to do harm to tunnel.

以渝怀线圆梁山隧道为实例，通过隧道内地下水取样进行了全分析，其中CO(上标 2-下标 3)离子作为"中间过渡态"离子，由于只存在微小量未被检出；使用水质分析结果数据设计了五个化学反应方程式，通过活度、反应平衡常数及吉布斯自由能之间关系进行热力学计算，依据二氧化碳气体分压P(下标 CO2)与反应进行两个方向化学反应判据开展分析，结果表明地下水具有弱侵蚀性，在隧道工程中应避免其引起危害。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。