硫代的

The major methods involved in this paper are cyanidation,thiocarbamide process,thiocyanate process,thiosulfate process, multi-sulfide process,haloid process,and other reagents procss;the advantages and disadvantages of the methods as well as the suitability of these methods for treating various silver bearing ores are generally analyzed.

综述了国内外关于银浸出技术的各种方法，主要内容包括氰化法、硫脲法、硫氰酸盐法、硫代硫酸盐法、多硫化物法、卤化物法和其他试剂法等，简要分析了各种方法适用的含银矿石及其利弊。

Theoretical studies on various geometrical structures of Hypophosphorous acid were carried out using DFT theoretical methods,at the B3LYP/6—311++G** level.Intramolecular proton transfer isomerization has also been studied using the intrinsic reaction coordinate.

采用量子化学密度泛函B3LYP方法，在6—311++G**基组水平上全优化得到了硫代次磷酸的硫酮式和硫醇式两种构型异构体以及相应的对映异构体，同时对分子内质子转移异构化反应微观机理进行了理论分析。

Theoretical studies on various geometrical structures of Hypophosphorous acid were carried out using DFT theoretical methods, at the B3LYP/6-311 ++ G(superscript **) level. Intramolecular proton transfer isomerization has also been studied using the intrinsic reaction coordinate.

采用量子化学密度泛函B3LYP方法，在6-311++G基组水平上全优化得到了硫代次磷酸的硫酮式和硫醇式两种构型异构体以及相应的对映异构体，同时对分子内质子转移异构化反应微观机理进行了理论分析。

The experimental results show that this new kind of chitosan derivative has the characters of both chitosan and dithiocarbamate.This compound has much better selectivity and capability for heavy metals.Meanwhile,it is convenient,safe and more jarless in acid solution.All results above show that this chitosan derivative has a good application foreground.

本文合成的二硫代氨基甲酸改性壳聚糖兼具天然高分子壳聚糖与二硫代氨基甲酸基的结构与特性，对重金属离子具有良好的选择性和优异的捕集效果，能同时去除多种重金属离子，而且具有使用方便、毒性小、抗干扰能力强、性能稳定等优点，具有良好的应用前景。

The present dissertation reviews the total synthesis of biotin, particularly on Hoffmann-La Roche\'s Lactone-Thiolactone approach. The Lactone-Thiolactone approach is presently the most competitive commercial route, which gives an excellent illustration of the gradual construction of the functionalized skeleton with the simultaneous solution of the stereochemical issues in a minimal number of steps.In 1970, Gerecke etc. of Roche Corp.

论文对生物素全合成的文献进行了综述，重点讨论了目前工业上最有竞争力的内酯—硫代内酯路线，展示了生物素是如何以最少的步骤去逐步构建目标产物的官能团骨架并同时解决立体化学问题的。1970年，Roche公司的Gerecke等报道了一条通过手性内酯，以较高收率并保持构型得到手性硫代内酯，从而直接合成d-生物素的方法后，该中间体内酯(3aS，6aR)-1，3-二苄基。

Calculated results show that S〓, T〓, and T〓 electronic states are very close in energy for simple thiocarbonyl compounds such as CH〓CHS and 〓CS, and the excitation energies are relatively lower.

计算表明，对于简单的硫代羰基化合物CH〓CHS和〓CS，其S〓、T〓和T〓电子态的能量非常接近，并且激发能比较低，我们推测硫代羰基化合物的光化学反应很有可能是从能量较高的S〓态开始的。

On the condition of the existence of the buffer solution of ammonium acetate (PH5-6) and ammonium thiocyanate, quantitatively reduce Cu2+ into Cu+ by using sodium thiosulphate .

本文在PH5-6的乙酸铵缓冲溶液及硫氰酸铵存在下，用硫代硫酸钠定量还原Cu~(2+)为Cu~+，Cu~+与SCN~-结合，形成稳定的硫氰酸亚铜白色沉淀，反应终点可由全自动电位滴定仪确定。

Zinc diamyl dithiocarbamate antioxidant showed good synergism with antimony diakyl dithiocarbamate antiwear additive in improving the oxidation stability of modified soybean oils. The incipient oxidation temperature and induction period time of genetically modified soybean oils were improved significantly by adding polyalphaolefin and additives, and they were even better than that of the synthetic base oil PAO with the same additive formulation.

结果表明，改性大豆油的不饱和脂肪酸含量越高，其氧化安定性越差；抗氧剂二戊基二硫代氨基甲酸锌和抗磨剂二烷基二硫代氨基甲酸锑在改性大豆油中均表现出了良好的抗氧协同性能，尤其在基因改性大豆油中，聚-α-烯烃和添加剂的复配使其起始氧化温度和氧化诱导时间均超过了相同配方的聚-α-烯烃油样。

Class-specific polyclonal antibodies for O,O-diethyl phosphorothioate pesticides had been generated. A series of generic haptens were synthesized and coupled to bovine serum albumin and ovalbumin for immunogens and coating antigens, respectively. New Zealand rabbits were immunized with immunogens to obtain corresponding polyclonal antibodies.

通过分析硫代磷酸二乙酯类农药的结构特点，设计并合成了系列半抗原；采用活泼酯法将半抗原分别与牛血清蛋白和卵清蛋白偶联制备了系列免疫原和包被原；通过免疫新西兰大白兔获得了相应抗硫代磷酸二乙酯类农药的类特异性抗体。

The invention relates to a surface chemistry modified latex which can be obtained by carrying out radical polymerization in emulsion in the presence of at least one ethylenically unsaturated monomer or at least one polymer having ethylinically unsaturated residual bonds, at least one radical polymerization, at least one single, double or triple block polymer which is soluble or dispersible in water, comprising an active group at the end thereof, capable of forming a radical, and chosen from dithioesters, xanthates, thioether-thiones and dithiocarbamates.

本发明涉及具有改良表面化学性质的胶乳，它可以通过在以下物质的存在下进行自由基乳液聚合来获得：至少一种烯属不饱和单体或至少一种含残留烯属不饱和键的聚合物，至少一种自由基聚合引发剂，至少一种水溶性和/或水可分散的单嵌段、二嵌段或三嵌段聚合物，在其端部包括选自二硫酯，硫醚-硫酮，二硫代氨基甲酸酯和黄原酸酯中的能够形成自由基的活性基团。

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