离子键

Several main non-ionic surfactants (AEO、TX、SpanTweem、EL) was used to emulsify liquid paraffin and di octyl sebacate and the anti-coalescence stability of the corresponding emulsion was studied, the impact of the presence of benzene and double bond in lyophobic moiety of surfactant and its length and matching with dispersed phase upon the interfacial viscosity and Gibbs elasticity was analyzed.

本文采用了几种主要的非离子活性剂(AEO、TX、Span-Tween、EL)来乳化白油和癸二酸二辛酯，通过对各乳液体系抗聚并稳定性的考察，分析了活性剂亲油链段的长度、苯环和双键的存在、及亲油链段与被乳化对象分子结构的匹配关系对界面粘度和Gibbs弹性的影响。

Previous studies by others and this laboratory on the allosteric effect of hem oglobins have suggested that the electrostatic replusive cavity at the center of tetrameric moiety plays a substantial role in regulating O2 transport prope rties, including chloride binding, and Bohr effect .

中文摘要过去对血红蛋白异位调节效应的研究指出，在血红蛋白四合体中央空腔的区域的静电排斥效应对分子机能的调节如氧合时氯离子的键结和波尔效应，扮演著一个很重要的角色。

Metallothioneins are a group of cysteine-rich, low-molecular-weight proteins, which can bind metal ions through mercaptide bonds.

金属硫蛋白(metallothionein，简称MT)是一类富含半胱氨酸的低分子量蛋白质，能够通过配位键结合金属离子。

The main reason of complex with greater nonlinear refractive index is that the complex has larger conjugated delocalized system and there are electrons shifting between ligand and metal atom.

选择具有π键的配体与金属离子合成为配合物，使其非线性效应明显增强，这对合成性能更好的非线性材料有一定的参考价值。

According to the experimental and calculation results, the enthalpies of formation of the ions and some bond energies have been evaluated.

结合实验和理论计算结果，估算了离子的标准生成焓和键解离能。

However, theseare favourable to only mono-or bi-borides, but not for borides with complex struc-ture such as Cr_5B_3 or W_2B_5. The coefficient of S_c for alloy of CsCl structuredeviating from Bragg's S_c is directly proportional to charge transfer in alloy.

对CsCl型合金，S_c对Bragg定律的偏离系数γ和合金中电荷转移量成正比，后者越大表明金属键越强，则合金对离子的阻止本领越大，这与实验结果是吻合的。

The results indicated that Eu3+ mainly interacts with the carbonyl oxygen in the amino acid residues of the peptide chain of CAT because rare earth ions are easy to coordinate with O, causing the change in the peptide conformation and in turn the change in the structure of the heme group of CAT.

结果表明，由于稀土离子易与O键合，因此，Eu3+主要与CAT肽链上的氨基酸残基中的羰基氧配位，引起肽链构象的变化，而构象的变化又会诱导CAT中的血红素结构的变化。

X=0, 11, 22, 33, 44, and 55 borophosphate glasses series have investigated, and it is found that:(1) both the covalency bonding between Yb〓 ion and oxygen ion and the asymmetry in local structures surrounding Yb〓 ion have strong effects on integrated absorption cross section ∑〓 and emission cross section σ〓 of Yb〓 ion in borophosphate glasses;(2) the borophosphate glasses and borate glasses appear superior as Yb-gain media to the phosphate glasses, although the phosphate glasses have been demonstrated as the most appropriate Ndgain media.

在第二章中，我们对〓（x=0，11，22，33，44，和55）系列的掺Yb〓硼磷酸盐玻璃的吸收光谱和发射光谱特性进行了研究，结果表明：（1）在硼磷酸盐玻璃中，Yb-O键的共价键成分和Yb〓离子周围的近邻结构的对称性两个因素对积分吸收截面∑〓和受激发射截面σ〓的影响都很大；（2）尽管磷酸盐玻璃是最合适的掺钕激光增益基质，但是作为掺镱的激光增益基质，硼磷酸盐玻璃和硼酸盐玻璃都要优于磷酸盐玻璃。

The photodissociation mechanism of long-chain alkyl iodides and cyclic alkyl iodides at 267 nm were studied using ion velocity imaging technique.

利用离子速度成像方法对碘代直链烷烃和环烷烃分子在267 nm下的光解断键机理进行了研究。

In this study, the shear bond strength of five hybrid glass ionomer materials to bovine enamel using five different enamel surface treatments was evaluated.

此研究乃探討五种复合玻璃离子体，以五种不同表面处理方式產生的键结强度。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。