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The method of self-consistent field of the intermediate neglect of differential overlaphas been used in the calculations of the binuclear cluster, trinuclear unit of hexanuclear clusterand octanuclear clusters. The results are described as follows: The high-lying MO's of thetrinunclear and binuclear cluster are mostly composed of d-orbitals of the metal cores, and areconsidered as M-M bonding orbitals.

应用INDO/S方法对二核簇合物、六核簇合物中的三核片断和八核簇合物进行了计算,结果表明,二核簇合物与三核簇合物的前线占有轨道主要是由金属簇芯的d轨道组成,是M-M成键轨道。

Mn-complexes in which Mn atom ligand with the N atom within ligand can stimulate the recovery of electron transfer and oxygen evolution. The trinuclear Mn-complex is extremely sensitive to the addition of CaCl2. It is suggested that there is an interaction between Ca2 and carboxyl within the trinuclear Mn-complex during photoactivation and this interaction benefits the ligation of Mn atom to the apo-WOC and form an active WOC. Binuclear MnMn complex shows slightly higher efficiency than binuclear MnMn complex in restoration of O2 evolution activity. It is suggested from our results that recovery of electron transport and O2 evolution with synthetic Mn-complexes is affected by different factors. Cl- can stimulate the reconstitution of WOC at the concentration of over 100mM;the maximal recovery of O2 evolution activity requires the presence of CaCl2 and 33 kDa protein polypeptide together. Bicarbonate can stimulate the reconstitution of WOC.

锰配合物中锰原子与配体中的氮原子配位连接时,能显著恢复电子传递活性和放氧活性;三核锰化合物在重组时对CaCl2的存在非常敏感,我们认为Ca2 与三核锰化合物中的羧基之间存在一定的相互作用,而这种作用有助于锰原子的光配位进而使三核锰化合物易于组装成有活性的水氧化复合物:双核锰化合物MnMn比双核锰化合物MnMn在恢复放氧活性方面更有效;影响锰化合物电子传递能力恢复的因素与影响锰化合物放氧活性恢复的因素不同;在锰蔟重组过程中,氯离子的浓度必须在100mM以上,才能有效进行光重组;最大光重组效率的获得必须有钙离子和33kDa多肽同时存在;碳酸氢根离子促进锰化合物与去锰光系统II的光组装。

In the aluminum solution ,the trivalence aluminum ion combi...

另一方面,在这种铝盐溶液中,三价铝离子是以铝水配合物的形态存在,配位水发生水解生成羟基配离子,其通过羟基桥联结,放出水分子,并逐级由单体配合成双核、三核以致形成多核羟基配合物。

In the aluminum solution ,the trivalence aluminum ion combines with water to form the coordination compound and then the coordination waters hydrolyze into hydroxide ions. The hydroxide ions can join up each other by the hydroxide ion bridges so that the double cores, three cores and multiple cores coordination compounds are formed.

另一方面,在这种铝盐溶液中,三价铝离子是以铝水配合物的形态存在,配位水发生水解生成羟基配离子,其通过羟基桥联结,放出水分子,并逐级由单体配合成双核、三核以致形成多核羟基配合物。

The PRL-like cells were also presented in the ventral ependyma of the lateral ventricle and the glial lamina in the basal surface of the brain. The processes of PRL-LIR cells in PPN, SCN, PVN and PAN mainly projected to the third ventricle, those in AN and ELV mainly projected to the lateral ventricle, and those in SON to the glial lamina in the basal surface of the brain. The results showed that PRL could be released into ventricularis system and participate in the regulation of the cerebrum-cerebrospinal fluid circuit.

视前室旁核、视交叉上核、下丘脑室旁核、弓状核等核团内的PRL阳性神经元有突起向第三脑室投射,伏隔核内及侧脑室室管膜上的PRL阳性神经元有突起伸至侧脑室,视上核的PRL阳性神经元也有突起投射至脑基底神经胶质板,表明鸡脑内的PRL可以释放入脑室系统,参与调节脑-脑脊液神经体液回路。

For the above purposes, using a tailored cyanometalate precursor,(1) Tp=hydrotris (pyrazolyl borate; Bu〓N〓=tetrabutylammonium cation , two trinulear complexes,〓(2),〓(3; cyclam: 1, 4, 8, 11-tetraazacyclotetradecane), two one-dimensional polymers,〓(4; dien: diethylenetriamine),〓(5), and a cluster 〓(6) have been synthesized and characterized structurally and magnetically.

基于上述研究热点,我们以修饰的氰基金属化合物(1)为构筑基元(Tp:三吡唑基氢硼烷,Bu〓N〓:四丁基铵离子),合成了两个杂三核化合物,〓(2),〓(3;cyclam:1,4,8,11-四氮环十四烷),两个一维聚合物,〓(4;dien:二乙烯三胺),〓(5),和一个十四核簇合物〓(6)。

We're looking for specific roles players now as we have amassed our talent.

他想打造三核的球队,现在我们的核心成员已经有了,需要角色球员。

Thischapter proposes three concepts,i.e.,kernelled quasidifferential,star-kerneland star-differential,and establishes their operational properties.A sufficiencytheorem and a sufficiency and necessity theorem for a quasi-kernel being a ker-nelled quasidifferential are proven.Both the existence of star-kernel for a qua-sidifferentiable function and the existence of star-differential for a directionallydifferentiable function are established.The relationships between sub-and su-per derivatives and Penot differentials are discussed as well.

这一章我们引入了三个概念,即核拟微分,星核与星微分并建立了它们的运算性质;证明了拟核为核拟微分的一个充分条件定理及一个充分与必要条件定理;建立了拟可微函数星核的存在性及方向可微函数星微分的存在性并讨论了Penot微分与上、下导数的关系。

Compound 20 has a two-dimensional hybrid structure on the basis of A-type Anderson polyoxometalates and trinuclear silver coordination complex subunits and sodium dimmers.

化合物20是将A型Anderson多酸与三核的银配合物簇及钠的二聚体形成的2D杂化结构。

Alternative layers of target material 〓 are irradiated with (47.5 MeV/u)〓 ions, the ternary fission events of hot nuclei are verified and the probabilityratioes of ternary fission relative to binary fission with projectile energy from25Mev/u to 47.5MeV/u are measured and reprodurced with calculation result ofstatistical cascade fission model program written by myself. The fact that ternaryfission at low excitation energy come from cascade fission is shown.

5MeV/u〓束轰击Bi靶时,用叠层靶技术,实验证明了热核三分裂变确实存在,并测量了25MeV/u~47.5MeV/u 〓三分裂变相对于二分裂的三二比的激发曲线,利用自编级联统计模型程序,模拟了低温热核的三分裂相对于二分裂的几率,结果也表明在较低激发时热核三分裂是级联三分裂。

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