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OBJECTIVE A HPLC method was established for the assaying of metformin in human plasma.

目的建立离子对-HPLC法测定人血中二甲双胍含量的方法。

In this work, the effects of different metal ions loaded onto activated carbon on the adsorption of benzothiophene were investigated.

主要研究了活性炭表面负载不同的金属离子对其吸附苯并噻吩的影响。

The experimental results indicate that the treatment process of copper alloy using benzotriazole can improve the corrosion resistance greatly.

目前常采用的是铬酐及重铬酸盐的钝化处理工艺,虽然效果比较好,但由于铬化处理过程中的铬离子对人体和环境的污染严重,因此研究针对不同使用环境的、良好的无铬钝化工艺具有很大的现实意义。

Finally, the interaction of DNA with electrochemical inactive molecule 2, 2'-bipyridyl was investigated by electrochemistry, the equilibrium constant was estimated.

在此基础上,以纳米氧化锆为连接剂,将DNA玻碳电极表面,以铁氰根为电化学探针研究了镧系离子对DNA电子传递行为的影响;用电化学方法研究了DNA在纳米氧化锆上的吸附作用和非电活性有机小分子与DNA的相互作用,计算了DNA与2,2'-邻吡啶的络合平衡常数。

METHODS Acidic dye colorimetry with bromothymol blue as ion pair reagent was employed to determine the alkaloids in samples.

用溴麝香草酚蓝同川芎生物碱形成稳定的有色离子对酸性染料比色法测定总生物碱的含量。

The joint toxicity of copper, cadmium and zinc ions to tadpole of Bufo bufo gargarizans was determined using additive index method.

以蟾蜍蝌蚪为实验材料,采用联合指数相加法,研究了重金属铜、锌和镉离子对蟾蜍蝌蚪的急性毒性和联合毒性效应。

The influence of Cuon the combination between LMX and BSA was studied as well,the binding constant between LMX and BSA was decreased in the presence of Cu,consequently,the interaction between LMX and BSA weakened.

并且讨论了铜离子对两者结合的影响,Cu的存在降低了LMX与BSA之间的结合常数,使洛美沙星与BSA的作用变弱。

The effect of the series of dicarboxylic acids and metal ions on the crystallization of calcium oxalate was investigated in silica gel system.

本文在硅胶体系内,研究了不同二元羧酸及金属离子对CaOxa晶体生长的影响。

The results indicate that there are strong dipole or ionic pairs interactions between carboxylic acid or anhydride and dimethylamino groups in reactive blends, so reactive compatibilizers are formed at the interphase, which can reduce the interfacial tension and improve interfacial adhesion between the component polymers, meanwhile the morphologies of the reactive blends become more fine and uniform, the dispersed domain size decreases remarkable.

研究结果表明:在PS/PE-g-MAH/St-Co-DMA和PS/EPDM-g-DMA/St-Co-MAH反应性共混体系中,反应性聚合物所含的酸酐基团与叔胺基团存在离子对间的相互作用;在PS/Surlyn/St-Co-DMA和PS/EPDM/Surlyn/St-Co-DMA反应性共混体系中,反应性聚合物所含的羧酸基团与叔胺基团间存在偶极相互作用。

Moreover, the effects of metal ions on the two enzymatic activities were also similar.

另外,金属离子对这两种酶活性的影响也趋于一致。

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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

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。