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A theoretical study of Relativitic Effects and Electron Correlation Effects in Group 13 and Perioal 6 Hydrides and Halidiles.

用相对论效应和电子相关效应对周期表中第Ⅲ_A 族和第6周期氢化物和卤化物进行理论研究。

Both two methods have been used to find the regularity of the formation of ternary compounds in Me-Me'-X halide systems and the regularity has been used to predict the formation of ternary complex iodides in M-Eu-I system.

并分别运用人工神经网络和遗传算法研究了Me-Me'-X三元卤化物的形成规律，并以判别分析所得的结果预报了M-Eu-I体系的5个三元碘化物的形成情况。

Our group first reported a novel dialkylation reaction of alkyl zinc iodides with aromatic aldehydes and an olefination reaction of benzyl zinc bromides with aromatic aldehydes respectively.

我们实验室分别首次报道了在过渡金属络合物催化下带官能团有机卤化锌试剂与芳香醛的双烷化反应和烯基化反应。

Therefore,it is necessary to develop new routes to prepare anion exchange membranes without such chloromethylation process.As for cation exchange membranes, mostly-perfluorinated sulfonic acid ionomers,such as Nafion~ series,have been wildly used due to their high proton conductivity and substantial durability.

对于强碱性的阴离子交换膜的制备，由于传统路线中的卤甲基化步骤中不可避免的采用强致癌物质二氯甲醚，因此无论是从经济成本还是环境保护方面，开发不采用氯甲基化步骤的阴离子交换膜制备方法是目前的一个迫切要求。

With regard to anion exchange membranes,the traditional preparation method involves a much complicated process—chloromethylation,in which the commonly used chloromethyl methyl ether and bis-chloromethylether are now considered carcinogens.Therefore,it is necessary to develop new routes to prepare anion exchange membranes without such chloromethylation process.As for cation exchange membranes, mostly-perfluorinated sulfonic acid ionomers,such as Nafion~?

对于强碱性的阴离子交换膜的制备，由于传统路线中的卤甲基化步骤中不可避免的采用强致癌物质二氯甲醚，因此无论是从经济成本还是环境保护方面，开发不采用氯甲基化步骤的阴离子交换膜制备方法是目前的一个迫切要求。

Thus iron tetrakis porphyrin chloride , chosen as a catalyst in this study, was synthesized, and its solubility and catalytic activity in supercritical propane were investigated.

本研究选择多卤代卟啉铁作为催化剂，合成了四卟啉氯化铁，测定了TPFPPFeCl在超临界丙烷中的溶解度，并且考察了利用空气选择性羟基化丙烷的催化行为。

It is concluded that the existence of NNW-SSE crevice in salt stratum is the fundamental reason for successful fracturing and communication modification K series brine well.

该矿区含盐地层中NNW-SSE向断裂裂隙的存在是K系列卤井压裂连通改造成功的根本原因。

Taking the brines from Qinghai Chaerhan salt lakes as raw material, sulfonated kerosine as diluting agent, the experiment of extracting boric acid from brines by 2 - ethyl - 1,3 - haxanediol is carried out. The concentration of extractant,acidity, the ratio of organic phase to brine, the time of extraction and extration isotherm are investigated.

以青海察尔汗盐湖提钾后老卤为原料，以磺化煤油为稀释剂，从萃取剂浓度、酸度、相比、萃取时间、萃取等温线5个方面加以试验，获得了2-乙基-1，3-己二醇从卤水中萃取提硼的最佳试验条件，并与2-乙基己醇和磺化煤油的萃取体系进行比较，得出二元醇的萃取效果高于一元醇的结论。

Asymmetric reduction of prochiral ketone to these chiral alcohol s by active microbe cells is one of the most promising routes.

以4-氯苯乙酮为苯环上含卤素的芳香酮的模型底物，研究了活性酵母细胞在水相体系中催化该类芳香酮不对称还原合成相应手性醇的反应特性。

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