氨基甲酸

On the contrary, the existence of electron-donating groups on the benzene ring would prolong reaction times and decrease the yields.

使用苯胺为反应底物考察了各因素的影响，在优化的反应条件下，苯胺的转化率可达到99.7％，N-甲基-N-苯基氨基甲酸甲酯的收率为83.2％。

The cyclic voltammetric behavior of the organic phase at the liquid/liquid interface has been studied with a classic three-electrode system.

利用吡咯烷二硫代氨基甲酸铵作为螯合剂，甲基异丁酮作为萃取剂，将水相中的Pb2+萃取到有机相中，利用经典的三电极系统研究该有机相在液/液界面的伏安特性。

The effects of different doses of urethane,chloral hydrate and pentobarbital sodium on the electrophysiological characteristic of sciatic nerve of toad in vitro were investigated by means of the extracellular recording action potential.

使用BL-420生物机能实验系统，采用细胞外记录神经干动作电位的方法，观察了氨基甲酸乙酯、水合氯醛和戊巴比妥钠3种麻醉剂对蟾蜍离体坐骨神经电生理特性的影响。

Using a long-term reared housefly population which is very susceptible to pyrethroid insecticides as the susceptible strain, a population collected in 1993 in Shanghai and has been treaded by cyhalothrin as the resistant strain, we bioassayed their susceptibility to organophosphorus, carbamate, pyrethroid and organehloride insecticides. We also investigated the role of metabolic enzymes, i. e. esterase, GST, MFO and of target enzymes, i. e. AChE and 〓-ATPase in resistance to insecticides. Cyhalothrin resistance inheritance, the co-toxicity coefficient of cyhalothrin and methylene dithiocyanate was also studied. The insecticides resistance in adults and larvae of houseflies was compared and the mechanism of resistance differences between adults and larvae was discussed.

本文以采自野外并经过室内多代筛选的三氟氯氰菊酯抗性家蝇品系和室内多年饲养的敏感家蝇品系为试虫，测定了抗性家蝇品系和敏感家蝇品系对拟除虫菊酯杀虫剂三氟氯氰菊酯、氯菊酯、有机磷杀虫剂DDVP、氨基甲酸酯杀虫剂残杀威、有机氧杀虫剂DDT的抗性水平，并通过活体增效剂实验和离体生化实验研究了抗性品系的解毒酶和靶标酶的变化，本文还研究了三氟氯氰菊酯和增效剂I对抗性家蝇的增效作用及增效机理、家蝇幼虫和成虫对杀虫剂的抗性差异及其抗性差异的机理。

IP53 is a quick-drying, zinc phosphate primer, based on long oil alkyd resin and urethane alkyd resin.

IP53是长油醇酸树脂和氨基甲酸乙酯醇酸树脂配制而成的快干磷酸锌底漆。

In addition, TMA also can be used for thermoset polyester powder coating resin and epoxy resin crosslinking agent, can be used for dispersion carbamate acetate polyester in its ambient temperature of 70 , the nature of stability and with a high gloss, quick-drying, wear and many other features.

另外，偏酐还可以作热固性粉末涂料聚脂树脂和环氧树脂的交联剂，可用于分散性氨基甲酸乙脂聚脂中，使其在环境温度为70℃时，性质稳定，并具有高光泽度、快干、耐磨等多种特性。

The compatibilities of molybdenum dialkyldithiocarbamateand Cacompounds in greases were studied.

研究了氨基甲酸钼和钙化合物在润滑脂中的配伍性。

After the digestion of the samples of the effort of the mixed acid, in the condition of pH=2~2.8, the lead in the sample solution and the added pyrrolidine a two-ammonium thiosulfate can come into being a metal complex. With A methyl isobutyl ketone extraction, the lead complexes can be divided from the water phase.

采用混合酸对样品进行消化处理后，在pH2~2.8时，样品溶液中铅与加入的吡咯烷二硫代氨基甲酸铵形成金属络合物，用甲基异丁基甲酮萃取，使铅络合物与水相分开。

In this paper, the ammonium pyrrolidinyldithiocarboxylate- methyl isobutyl ketone chelated-extract system was used. APDC chelated with Pb2＋ in solution, and then extracted into organic phase with MIBK. The cyclic voltammetric behavior of Pb-APDC complex at the liquid/liquid interfaces has been studied with classic three-electrode.

本文利用吡咯烷二硫代氨基甲酸铵作为螯合剂，甲基异丁酮作为萃取剂，将水相中的Pb2+萃取到有机相中，利用经典的三电极系统研究该有机相在液/液界面的伏安特性。

The cellulose pulp with α-cellulose higher than 90% and polymerisation degree of range of 450~625 was treated with 14%~16% sodium hydroxide solution for 30~40 min under temperature of 40~50°C, and blended with urea in the ratio of 1:2~3. The product was reacted in xylene as solvent at 137°C for 2~3 h.

指出：选用聚合度为450~625、α-纤维素含量大于90%的纤维素桨粕，用14%~16%的氢氧化钠溶液，于40~50℃条件下活化处理30~40min后，与尿素以1：2~3的比例混合，在137℃的二甲苯体系中反应2~3h，便可得到含氮量为2.4%~3.5%的纤维素氨基甲酸酯产物。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。