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This dissertation divides into seven chapters and the main contents and conclusions are listed as following:1. Three series binuclear lanthanide carboxylate coordination polymers 1~7 have been synthesized under hydrothermal conditions by altering the length of carbon chains between carboxyl group and phenyl ring on ligands, which are isophthalic acid, 1,3-phenylenediacetic acid and 1,3-phenoxydiacetic acid, and lanthanide ions such as Pr~(3+), Eu~(3+)and Ho~(3+).

论文共分七章,主要研究内容和结论如下:1、通过改变间苯二甲酸配体的羧基和苯环之间的碳链长度,从间苯二甲酸、间苯二乙酸到间苯二氧乙酸,以及改变稀土离子半径Pr~(3+、Eu~(3+)和Ho~(3+)出发,在水热条件下制备了三个系列双核金属单元的稀土羧酸二维配位聚合物1~7。

The structure is the culmination of a three-laboratory, nine-year collaboration among Rockefeller professors Michael Rout and Brian Chait, and Andrej Sali, now at the University of California, San Francisco.

这一核膜孔复合体结构是三个实验室九年通力合作的结晶。洛克菲勒大学的迈克尔。路特和布赖恩。查特与旧金山加州大学的安德烈。

Western-blot and immunohistochemical assay methods were employed to detect the expression of FHIT. Apoptosis and cell cycle of cell were analyzed by FCMS. Morphological changes were observed by compound and electron microscope.

然后用流式细胞仪,普通光镜及透射电镜对获得稳定FHIT蛋白表达的转染组细胞和空真核表达质粒转染组细胞及未转染的亲本细胞凋亡的状况进行了考察,另外还通过流式细胞仪检测了三组浙江大学硕士学位论文细胞生长周期的惰况。

The aim of the subject is to design and check the strength of the gears of crown gear coupling from the Beijing subway and to analyse the teeth by means of 3D FE elastic contact method. The result can numerically and theoretical support the design and manufacture of crown gear coupling.

本课题研究的目的是通过对北京地铁联轴器齿轮副进行强度设计和校核,并且对其进行三维弹性接触有限元分析,得出鼓形齿联轴器齿轮副的弹性接触状况,为鼓形齿联轴器的设计及制造提供数据和理论支持。

Poly/melamine cyanurate composite latex particles are prepared via soapless emulsion polymerization. XPS data and TGA analysis reveal that MC particles are encapsulated by PMMA during polymerization, resulting in the formation of a core-shell structure of PMMA/MC composite latex particles. MC can affect the thermal degradation and promote the charring of PMMA. The application of PMMA/MC in nylon 6 (PA6) indicate that the composite latex particles can improve the mechanical pro...

采用原位乳液聚合法制备了聚甲基丙烯酸甲酯/三聚氰胺氰尿酸盐复合胶粒,对其进行X光电子能谱及热重分析结果显示,在MC阻燃剂颗粒表面覆盖了一层PMMA胶膜,形成了具有核-壳结构的PMMA/MC复合胶粒;MC能影响PMMA的热降解过程并促进其成炭;在尼龙6(PA6)中的应用结果表明,PMMA/MC复合胶粒能改善PA6的力学性能和阻燃性能。

How do the characteristics of the eukaryotic rna polymerases differ in terms of their cellular location and products?

真核生物的三种rna聚合酶在细胞中的定位、合成的产物各具有怎样的特征?

The history of nuclear power development, the status of the third generation commercial nuclear power plant, the progress in the forth generation power system study, and the development prospect of controlled thermal nuclear fusion reactor are introduced in this paper.

回顾了核能发电技术的发展历程,介绍了第三代商用核电机组的发展目标和第四代核能利用系统的研发进展,以及可控热核聚变反应堆的发展前景。

He saw it as a dangerously loopy Bush prediction about the future behavior of a nuclear Iran — the idea being, presumably, that possessing "the knowledge" to make a nuclear weapon would so empower Iran's repressive leaders that they'll giddily rush out and start World War III.

他认为这是一种危险的循环布什预测未来行为的一个核伊朗-的想法,据推测,认为拥有"知识"与制造核武器将会使授权伊朗的镇压领导人时表示,他们将g iddily冲出并开始第三次世界大战。

Basing on thesingular integral operators T with weaker kernel introduced in chapter two,westudy the weighted boundedness on〓(1<p<∞)and the endpoint estima-tes of their higher order commutators with BMO functions in chapter three.

对第二章引入的弱核奇异积分算子,第三章主要讨论它们与BMO函数的高阶交换子〓在〓上的有界性及端点估计。

Results of XRD,SEM,and UV-Vis indicated that ZnS nanocrystals can grow in and fill in the void of opal template,and SiO2 microspheres of templates are dissolved so as to form some three dimensional ordered porous structure and to form the inverse opal ZnS photonic crystals. Compared with opal templates,ZnS-opal and inverse opal ZnS photonic crystals assembled with SiO2 spheres in the same diameter show good optical properties and exhibited photonic band gap. The photonic band gap position of inverse opal ZnS moves towards UV area compared with opal and ZnS-opal.

结果表明:溶剂热法多次充填可使ZnS纳米晶在模板密堆积形成的空隙中均匀成核;经过酸处理的ZnS-opal中SiO2微球溶解、坍塌,形成蜂窝状三维有序介孔和反opal结构ZnS基光子晶体;相同粒径SiO2微球组装的opal模板、ZnS-opal以及反opal结构ZnS光子晶体均表现出光子带隙特性,但反opal结构ZnS光子晶体带隙位置相比前两者发生了蓝移。

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She gently rebuff ed him, but agreed that they could be friends

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