离子

Studies of the binding of metal to calmodulin and the subsequent binding of metal-calmodulin complexes to the target protein/peptide revealed that the La-content calmodulin complexes to its target exhibit similar affinity with the Ca-calmodulin complexes.However, there were substle differences in protein conformation as well as the kinetical properties between the two kinds of metal-calmodulin complexes, suggesting Ln could produce cellular effects via the Ca/calmodulin signaling systems.

稀土离子和钙调蛋白的结合以及后续和靶酶的结合，在热力学上与钙离子激活蛋白具有相同的亲合力，但在动力学性质上以及细微构象上明显不同，显示稀土离子可通过细胞钙相关信号系统产生特别的生物效应。

The dissertation mainly consists of two parts:1. The Reaction Chemistry of Alkynes under Palladium Catalysis Part 1 studies the reaction α,β-unsaturated carbonyl compounds with alkenylpalladium intermediate generated by nucleopalladation, and discovered 1 the Pd-catalyzed tandem addition reaction of halides, alkynes and α,β-unsaturated carbonyls,2 the four-component tandem addition reaction of halides, alkynes and α,β-unsaturated carbonyls, 3 the tandem intramolecular oxypalladation-conjugate additionreaction of alkynoic acids with α,β-enals. These new reactions provide notonly efficient highly stereoselective methods for the synthesis of γ,δ-unsaturated,polyunsaturated carbonyl compounds and γ-lactonic aldehydes, but also thebasic transformations for a number of C-C bond formation reactions which can be usedto design synthesis of many acyclic, cyclic or polycyclic compounds.

本论文的主要工作分为两个部分：一、钯催化下炔烃的反应化学在本小组前人工作的基础上，我们详细研究了炔烃亲核钯化产生的烯基钯中间体与α，β-不饱和羰基化合物的反应，发现两价钯催化下卤离子-炔烃-α，β-不饱和醛酮的串联加成反应、卤离子-炔烃-α，β-不饱和醛酮的西组分串联加成及炔酸分子内氧钯化-串联Michael型加成反应；由此发展了γ，δ-不饱和醛酮、多不饱和羰基化合物和带有醛酮基侧链的γ-丁内酯衍生物的高立体选择性合成方法，这一过量卤离子存在下的烯基钯对α，β-不饱和羰基化合物共轭加成反应的发现，为大量碳-碳键形成反应的实现提供了基础，使我们能够从这一基本反应出发，设计和开发多种分子内、分子间的碳碳成键反应，以好的立体、区域选择性组建开链、环状及多环类型的化合物。

The bonding energy of a lateritic soil was chan...

作者根据实验材料认为，土壤体系中局部的电场强度较整个体系的平均体积电荷密度在决定离子的结合能方面具有更大意义；在 pH 低时，氢铝离子对交换点的竞争是钾、钠离子的结合能减小的一个重要原因。

LsNHX2 may locate on the vesicle, and may affect the salt secretion of Limonium sinense by vesicle trafficking, while LsNHX1 and LsNHX3 may locate on the center vacuole, and sequestrate Na+ into vacuole.

LsNHX1和LsNHX3可能定位于中央大液泡上，主要负责Na+的区隔化；沉默表达后，液泡中区隔化的Na+离子含量降低，胞质中的Na+离子含量增加，刺激盐腺泌盐，导致叶片分泌的Na+离子含量增加。

A study on exchange-adsorption of aluminium and manganous ions under conditions close to the field was carried out.

研究了贴近自然的稀溶液条件下铝、锰离子交换吸附的行为，结果是：铝、锰与钙、钾离子的交换吸附仍符合一般的离子交换规律，但也不遵守比例定律。

The treatment of wastewater with high concentration of copper from Phthalocyanine Green pro - duction was tested by the microelectrolysis of iron filings to study the effects of the pH value of the wastewater,the dose and particle size of iron filings,the reaction time,etc.,on the removal rate of copper.

酞菁绿是有机颜料中的一个重要品种，其生产过程的放料、沉降及吸附等工段均有大量的母液和漂洗废水排出，该废水呈强酸性，且含有大量的铜离子及铝离子和几万毫克每升的氯离子。

Distributions of neutral and zwitterionic microspecies reached the maximum at isoelectric point , with the latter being predominant.

喹诺酮两性化合物的中性微观离子与两性微观离子的分布在等电点下达到最大值，其中两性微观离子占主导地位。

Chloride channels have been identified in vasucular smooth muscle cells. These channels have been shown to be involved in myogenic tone regulation and neuromuscular transmission in various vascular beds. However, whether the chloride channels are responsible for the formation of excitatory junction potentials of the smooth muscle cells in the spiral modiolar artery remains elucidated.

许多研究已证实，血管平滑肌细胞膜上存在氯离子通道，进一步研究发现氯离子通道不仅参与调节平滑肌细胞的肌原性紧张，而且参与了许多种类血管床的神经平滑肌细胞之间的信息传递，但Cl-通道及氯离子通道阻断剂对耳蜗螺旋动脉细胞兴奋性接头电位(excitatory junction potential，EJP)是否有影响，目前还不清楚。

Cell membrane nonpermeable inhibitor of calmodulin -W〓-agarose- and the anti-serum of calmodulin can decrease the cytosolic calcium level, the results show that the endogeneous extracellular calmodulin may play an important role in maintaining and accelerating the cytosolic calcium level in pollen grain cell.

不能透过细胞膜的钙调素抗血清和大分子钙调素拮抗剂W〓-agarose处理后细胞内钙离子水平降低，免疫前血清对花粉细胞内钙离子浓度没有明显影响；进一步支持了上述结果，并且表明内源细胞外钙调素在维持和提高细胞内钙离子浓度方面发挥作用。

In the thesis, a series of novel single and multi-armed oxadiazole bridging ligands and pyridyl-4, 5-imidazole dicarboxylic acid ligands have been synthesized. The coordination chemistry of these novel ligands with transition metal ions was investigated. In addition, two 1, 3, 4-oxadiazole bridging ligands end-capped by chelating Schiff-base coordination sites have been designed and synthesized. The coordination chemistry based on one of the two ligands with metal ions was primarily investigated.

本文报道了一系列新颖的含1， 3， 4-Oxadiazole杂环的单臂及多臂有机配体，研究了它们与过渡金属离子的配位反应化学；合成了吡啶基-4，5-咪唑二羧酸有机配体，研究了它们在水热条件下与过渡金属离子的配位反应化学；另外，还合成了1， 3， 4-Oxadiazloe杂环桥联的双Schiff-base有机配体，初步探讨了其与过渡金属离子的配位反应化学。

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