查询词典 derivative

Itis main raw material of tetradecane,others applications include:liquid mosquito-repellent incense,hydraulic oil of large-scale punch,paraffin chloride,anticorrosive paint.powder paint,and top-grade melt adhesive,its derivative is chainpoly-anhydride of 14c binary acid,it is very useful chenical and medical intermediate,it can be used ad curing agent of epoxy and propylene resin,polyester improved additive etc.

外观与性状无色液体，溶解性不溶于水，可混溶于乙醇、乙醚是生产十四碳烷烃的主要原料，其它应用包括：液体蚊香、大型冲压机的液压油、氯化石蜡、防腐涂料、粉末涂料也可用作高档热熔胶，其衍生产品十四碳二元酸的直链聚酐，是一种非常有用的化工及医药中间体，可用于环氧及丙烯树脂固化剂、聚酯改性添加剂等等。

Results indicate that the two types of tetrazole derivative inhibitors have good corrosion inhibition ability for copper in NaHCO3 solution, and they are both anode-type inhibitors.

合成了胍基四唑和1-苯基－5-巯基－1， 2， 3， 4-四氮唑2种缓蚀剂，用失重法和电化学法研究了2种缓蚀剂在5% NaHCO3碱性介质中对铜的缓蚀性能和吸附行为。

The development of the formation of lyotropic and thermotropic liquid crystals of cellulose and its derivatives,the relationship between the molecular structure and the liquid crystalline behavior and cellulose derivative composites with cholesteric order are reviewed with 79 references.

本文全面地综述了纤维素及其衍生物溶致性液晶和热致性液晶的形成，液晶性与大分子链结构，以及具有胆甾型液晶相结构的纤维素衍生物复合材料等方面的最新研究进展。

Summary of Background Data. Limaprost, an oral PGE1 derivative, was developed in Japan to treat numerous ischemic symptoms of thromboangiitis obliterans and LSS.

背景资料摘要：利马前列素（一种口服前列腺素E1衍生物）是日本开发研究用于治疗血栓性脉管炎和腰椎管狭窄症患者局部缺血的症状。

The results indicate that the PPV oligomer with biphenyl bridge is a cross form between two chains and tortuose derivative in the same chain. It reduces molecular symmetry and weakens %π-π% stacking effect among conjugated molecules in solid. This is perhaps the important factor that light-emitting diodes can increase fluorescence quantum efficiency.

结果表明，联苯桥联后的PPV齐聚物在结构上形成了链间交叉链内扭曲的构象，这种交叉扭曲的构象降低了分子的对称性，减弱了共轭分子在固体中的π-π堆积作用，这可能是减少荧光猝灭效应，提高固体发光器件效率的重要原因。

Dixon transamination of oligopeptides and insulin results in the formation of a fluorescent derivative having emission maximum about 398-408nm with 0.02-0.03 quantum yield by the excitation at 3l2-333nm depending on the nature and length of the peptide.

短肽及胰岛素的N-末端经Dixpn转氨后具有荧光发色性质，其激发与发射波长随肽链氨基酸残基的种类和数量的不同而有差异，其范围大约为Ex 312—333nm；Em 398—408nm；量子产率为0.020—0.03。

In chapter four, molecular imprinting polymers against amino acid derivatives utilizing 2-VP+AM as combined functional monomer and trimethylolpropane trimethacrylate as tribasic cross-linker were prepared and result was compared with those with the same amino acid derivative as the imprinted molecules utilizing ethyleneglycol dimethacrylate as dibasic cross-linker. It was found that cross-link intensity of the molecular imprinting polymer is higher when TRIM was utilized and baseline separation for the imprinted molecule could be achieved. When TRIM was utilized as cross-linker more molecule is imprinted during the polymerization.

第四章采用2-乙烯基吡啶+丙烯酰胺复合功能单体，考察了三元交联剂三甲氧基丙烷三甲基丙烯酸酯烙印氨基酸衍生物的情况，并与二元交联剂乙二醇二甲基丙烯酸酯烙印相同氨基酸衍生物的情况进行了对比，发现三甲氧基丙烷三甲基丙烯酸酯交联剂在较小的用量下就可使分子烙印聚合物达到足够的交联度，实现烙印分子的基线分离。

And the chelation-enhanced fluorescence effect of tripodal naphthylethylamide derivative appeared when it was complexed with transition metal ions such as Cu〓 which have quenching potential.

其原因在于络合的过渡金属离子抑制了化合物的PET和化合物的三足结构又屏蔽了过渡金属离子对荧光体的直接猝灭作用。

Potassium Guaiacolsulfonate ; syrupus phenergani tussis ; first derivative spectrophotometry

愈创木酚磺酸钾；非那根止咳糖浆；一阶导数分光光度法

In recent years, the financial market had a quick development and the stock, bond and other derivative financial instruments were unceased weeding through the old to bring forth the new, the investors had many opportunities to choose among those portfolios.

近年来金融市场的活络及股票、债券及其他衍生性金融商品不断的推陈出新，投资者有更多投资商品可供选择，却也存在著因股价、利率、汇率等价格波动形成的风险。

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