二乙胺

Synthesis of Organic Pigmet Intermidiate N, N'- bisacetylaceto - 2 - methyl - 5 - chloro -1,4- Phenylenediamine

有机颜料中间体N，N′-双乙酰乙酰基2-甲基-5-氯代-1，4-苯二胺的合成

Among the above synthesized complexes, the SalenAlQ complexe that is combined from ethylenediamine and salicylal is more effective catalytic activity, because it has smallest steric hindrance.

在合成的系列催化剂中，由乙二胺与不带取代基的水杨醛合成的SalenAlQ因其空间位阻较小，催化活性相对较高。

Mercaptopropyl methyldimethoxysilane was synthesized by thiourea in the presence of tetramethylammonium iodine as a catalyst and mixed liquid containing ethylenediamine and trichloroethylene as a neutralizer, without solvent, in which the reaction temperature, catalysts ,neutralizer and their amounts were optimized.

以四甲基碘化铵为催化剂，乙二胺和三氯乙烯的复合液为中和剂，在无溶剂体系中，用硫脲法合成了甲基巯丙基二甲氧基硅烷。

Edta titrimetric method and flame atomic absorption spectrometric method.

乙二胺四乙酸滴定法和火焰原子吸收光谱测定法

In addition, we used a modified MTT 3-(4,5-dimethylthiazol-2-yl-2,5-diphenyltetrazolium bromide assay to examine cell proliferation by dissociating the cell/alginate constructs using trisodium citrate and trypsin/EDTA.

此外，我们用改良的MMT测定被枸橼酸钠－胰蛋白酶－乙二胺四乙酸分离细胞结构的细胞增殖情况。

The ammoniated electrode was soaked in CuL and electroless gold plating solution.

首先将GCE电极表面氧化形成羧基，进而键合上乙二胺。

A series of pH- and temperature-sensitive hydrogels carrying pendant phosphategroups have been synthesized by copolymerizing 2-methacryloyloxyethyl dihydrogenphosphate with N-isopropylacrylamide. The swelling ratio, swelling and deswellingkinetics have been investigated. High loading percentage of lysozyme into hydrogelshas been achieved and the release profile has been studied.

通过N-异丙基丙烯酰胺和含磷酸基团的单体2-甲基丙烯酰乙氧基二氢磷酸酯的共聚合，合成了一类含磷酸基团的既对温度敏感又对pH敏感的水凝胶，研究了它们在不同pH及温度时的溶胀率及溶胀动力学，并初步研究了其对溶菌酶的释放行为。

The influence of synthetic reactants ratio and crystallizing time on the synthesis of the zeolite was studied.

实验结果表明，以氨水和乙二胺为模板剂都可以合成出Z5M-5沸石分子筛，合成温度越低，所需时间越长。

A preparation method of the visible-light photocatalyst Bi2WO6 nano-powder is characterized by comprising the steps as follows:(1) the selection of raw materials;(2) bismuth nitrate Bi(NO33 question mark 5H2O is added into a citric acid solution to obtain the citric acid solution containing white sediment;(3) EDTA is added into ammonia water which is then added dropwise with the citric acid solution containing the Bi(NO3)3 question mark 5H2O so to obtain a solution of bismuth;(4) the solution of bismuth is added with (NH4)6W7O24 question mark 6H2O solution to form a precursor solution which is then stirred, dried, coked, cooled and ground to obtain decarburized powder;(5) the decarburized powder is roasted for 2h to 4h under 450 DEG C to 550 DEG C to obtain the visible-light photocatalyst Bi2WO6 nano-powder.

可见光催化剂Bi 2 WO 6 纳米粉体的制备方法，其特征在于它包括如下步骤：1原料的选取；2将Bi(NO 3 ) 3 5H 2 O加到柠檬酸溶液中，得到含有白色沉淀的柠檬酸溶液；3将乙二胺四乙酸加到氨水中，并缓慢滴加入含有Bi(NO 3 ) 3 5H 2 O的柠檬酸溶液中，得铋的溶液；4将(NH 4 ) 6 W 7 O 24 6H 2 O溶液加入上述铋的溶液中，组成前驱液；搅拌，干燥，焦化，冷却后，研磨，得去碳的粉体；5将去碳的粉体在450～550℃下焙烧2～4h后，得到可见光催化剂Bi 2 WO 6 纳米粉体。

The organic solvents of DMAC and DMF were found to have the best performance in dissolving PVDF and disparting aluminum foil.

通过实验，确定了在50℃条件下，当钴锂膜与溶剂二甲基乙酰胺的配比为1.34g∶10ml时，可实现铝箔与附着的正极活性物质完全分离。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。