硫代的

All of these results confirmed that the quenching effect of sulfur atom. The distance between sulfur atom and chromophore played an important role in the self-quenching effect.

通过实验，进一步证实了硫原子对发光基团的荧光淬灭作用，说明二硫代酯与发光基团之间的距离对硫的荧光淬灭作用有很大的影响。

The load carrying capacity and antiwear property of S,P containing benzotriazole derivative (BM 3) were evaluated using a four ball test machine,and compared with those of zinc salt di(T 202 ) and amine salt of complex ester thiophosphate (T 307 ). The antiwear mechanism of BM 3 were studied by investigating the chemical states and the mass fraction of elements on the rubbed surfaces using X ray photoelectron spectroscopy and electron probe microanalysis and the thermal decomposition products using gas chromatography mass spectrograph.

在四球机上对照评价了含硫、磷苯并三氮唑衍生物（BM－3）和二丁辛基二硫代磷酸锌（T202）及硫磷酸复酯胺盐（T307）的承载能力和抗磨性能，用X射线光电子能谱仪和电子探针微分析仪等对磨斑表面元素N，S和P的存在形式及表面膜的组成进行了分析，用气相色谱－质谱联用仪对BM－3的热分解产物进行了分析，并且还对其极压抗磨作用机理作了探讨。

The production method and processing conditions of sulfur,sodium hyposulfite, sodium hydrosulfide and thiourea from hydrogen sulfide tail-gas in the production of barium carbonate by carbonation method are introduced.

介绍了利用碳化法生产碳酸钡的硫化氢尾气生产硫磺、硫代硫酸钠、硫氢化钠和硫脲的生产方法和工艺条件，指出硫化氢的综合利用生产工艺简单，产品质量稳定，容易工业化，产品成本低，同时消除了硫化氢尾气对环境的污染，有巨大的经济效益和社会效益，发展前景非常广阔。

The process improvement of flaky sodium hydrosulfide production;2. The production method and processing conditions of sulfur,sodium hyposulfite, sodium hydrosulfide and thiourea from hydrogen sulfide tail-gas in the production of barium carbonate by carbonation method are introduced.

介绍了利用碳化法生产碳酸钡的硫化氢尾气生产硫磺、硫代硫酸钠、硫氢化钠和硫脲的生产方法和工艺条件，指出硫化氢的综合利用生产工艺简单，产品质量稳定，容易工业化，产品成本低，同时消除了硫化氢尾气对环境的污染，有巨大的经济效益和社会效益，发展前景非常广阔。

The chemical deposition method was applied to prepare bismuth sulfide through reaction of bismuth salt complexed by triethanolamine or EDTA with an aqueous solution containing a sulfur sourse such as thioacetamide, thiourea, sodium thiosulphate, geseous H2S.

化学淀积方法被提出申请准备硫化铋经过被和一个水溶液的三乙醇胺或乙二胺四醋酸合成物的铋盐反作用含有硫 sourse，像是硫代乙醯胺，硫，钠 thiosulphate ， geseous H2S 。

Research result indicated that the cooperative effect between swell and precursor is main factor for the nanoparticle loaded in Nafion, and moreover, polarity of solvent and water content in Nafion also affects the load largely. To improve away the surface concentration of CdS nanocrystal on two side of membrane for general preparation, thioacetamide was first used as a precursor instead of inorganic sulfur source(H2S and Na2S) in synthesis of CdS nanocrystal. The assembly mechanism for several sulfur source had been studied, and CdS/Nafion with the character of homogeneous disperse had been prepared, which is fit for mass transmission in photocatalitic reaction. Following the investigation of several crystallizing way, simple and reliable hydrothermal-crystallizing was found. According to this way, maximal TiO2 load in Nafion achieved 43%. Activity of TiO2/Nafion or CdS/Nafion as a photocatalyst was explored initially for disintegrating liquid contamination. Maximal decompose rate achieved 86% under condition of this research.

研究结果表明：Nafion膜对纳米粒子负载量的主要影响因素是溶胀作用与前驱体协同效应，同时溶剂极性和薄膜含水量对负载量也影响相当大；本课题首次使用硫代乙酰胺代替传统无机硫源（H2S、Na2S）合成CdS纳晶，研究了各种硫源的组装机理，克服了常规技术存在的CdS纳晶趋于膜表面富集的缺点，得到了有利于光催化传质需要的体相均匀分布CdS/Nafion；研究了多种Nafion膜内纳米粒子晶化途径，找到了简单可靠的水热晶化法，TiO2纳晶最高负载量达43％；初步探索了TiO2/Nafion、CdS/Nafion作为光催化剂降解水中模拟污染物的活性，在本实验条件下最高降解率达86％。

The research presented here is aimed at exploring the effect of DTT on the in vitro fibril formation of hen egg-white lysozymes with four disulfide bonds. In this work, we specifically addressed the effect of DTT concentration under different incubation temperatures on the hen lysozyme structure and fibril formation, the effect of addition of DTT at later time points on the amyloid fibrillization of hen lysozymes, and the effect of concentration ratio between reduced and oxidized forms of DTT on the fibril formation of lysozymes.

本研究以具有四对双硫键的母鸡蛋白溶菌酶为蛋白质模式系统，在含盐类之酸性溶液环境下诱导生成类淀粉纤维，再配合二硫代苏糖醇破坏溶菌酶中的双硫键，探讨：（1）不同温度下加入不同DTT浓度对溶菌酶类淀粉纤维形成之影响，（2）不同生长时期加入DTT对溶菌酶类淀粉纤维形成之影响，（3）不同比例之DTT和氧化态DTT浓度对溶菌酶类淀粉纤维形成之影响。

In the contaminated lard sample, 6 organic compounds have been thus identified to be the raw materials or byproducts in the production of organic tin compounds. Based on the identified contaminants, it can be postulated that the chemical structure of the organic tin compound is dibutyltin-bis-(2-isooctyl thioacetate). The method is simple and precise, and has not been reported in the local literature.Keywords Organic tin compound, Lard, SPME－GC－MS

经过摸索研究，采用固相微萃取方法富集挥发性杂质，直接注入色谱中，经色谱分离，质谱测定，确定了杂质的结构，由杂质成分推断生产有机锡所用的原料，然后判断合成路线，最后确定有机锡的结构，从有毒猪油中鉴定出2－巯基醋酸异辛酯、双（2－醋酸异辛酯）二硫、双醋酸异辛酯硫醚等6种与有机锡有关的杂质，并与相应的有机锡工业品对照，发现工业品中也含有这些杂质，与其合成过程的原料及副产物相符，从而确定有机锡化合物为二硫代醋酸异辛酯二丁基锡。

The materials are gold mine of low sulfur content, calcine or gold contain abatement. Cyanogens lixiviant is alkaline thiourea, stabilizer is sodium sulphite or sodium silicate, they constitute high stability alkaline thiourea system, and bland oxidizing agent is potassium ferricyanide with moderate electric potential during sunking process.

本发明以低硫含量的金矿、焙砂或含金废料为原料，以碱性硫脲为无毒的代氰浸出剂，以亚硫酸钠或硅酸钠为稳定剂，组成高稳定性碱性硫脲体系，浸出过程中以具有适中电势的铁氰化钾为温和氧化剂。

The attack causes the cleavage of P-S double bonds, then the decomposition products reacting with the surface of Fe metal lead to the formation of the anti-wear and anti-friction film largely composed of polyphosphates and sulphides.

计算表明二烷基二硫代磷酸锌的活性元素为6位和7位硫原子，其与铁发生摩擦化学反应时，最可能的断键位置是6位和7位硫原子的双键。

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