查询词典 carbamates

Insecticides used in dogs for fleas and ticks commonly contain either organophosphates or carbamates.

犬类的体外驱虫剂通常含有有机磷或氨基甲酸酯类物质。

With a data network monitoring information system ,it has a wide range of application in organophosphates and carbamates pesticide determination in vegetables ,fruits ,tea ,rice ,water and soils.

项目简介：采用酶抑制率法，快速检测和监控果蔬农药残留情况，并有测量数据网络监控管理信息系统，广泛用于蔬菜，水果，茶叶，粮食，水及土壤中有机磷和氨基甲酸酯类农药残留的检测。

Among the non-phosgene synthesis of isocyanate presented, the most promising one is the thermal decomposition of N-substituted carbamates. Unfortunately, this kind of compound is also mainly produced from phosgene or phosgene derivatives in industry.

中文摘要在目前所报导的非光气合成异氰酸酯路线中，N-取代氨基甲酸酯热裂解法是最具有应用前景的一条途径，然而这类化合物的工业化生产也是以光气法为主。

The AChE activity showed a correlation with the resistance of Cx.pipiens pallens to carbamates and organophosphorus insecticides,and little with that to pyrethroids.

AChE活性在淡色库蚊与氨基甲酸酯类及有机磷杀虫剂的生测抗性水平具有相关性，与拟除虫菊酯类杀虫剂的抗性关系不大。

Pyrethroids used in mixture with Organophosphates or Carbamates could effectively control insecticide resistance mosquito.

结论当淡色库蚊产生抗药性后，采用有机磷或氨基甲酸酯类杀虫剂与拟除虫菊酯类混用的方法，能取得较好效果。

Methods The sample pro-treatment method was optimized by oscillators and sample concentration instrument, and the carbamates pesticide in vegetable were tested by gas chromatography-mass spectrometry.

方法用振荡器和样品浓缩仪优化样品前提取方法，以气质联用仪分析氨基甲酸酯农药。

Based on the experimental results, it could be consequentially concluded that N-methoxycarbonylation of aromatic amines was followed by the exclusive N-methylation of methyl N-aryl carbamates during the reaction process.

苯环上有钝化基团的一级芳胺反应活性比较好，获得N-甲基-N-芳基氨基甲酸甲酯的产率较高，反应时间也较短；而苯环上活化基团的存在，则会降低一级芳胺的反应活性。

The key steps were the stereospecific conversion of both allylie carbamates 10 and 13 into 11 by Li_2Cu_3(CH_2)_5 and the stereoselective hydroxylation of unsaturated side chain by OsO_4-NMO.

合成的关键步骤是用Li_2Cu_3(CH_3)_5立体专一地转化烯丙醇苯胺基甲酸酯10和13成为11和用OsO_4-NMO在化合物16的不饱和侧链上立体选择性羟基化。

The four carbamates were hydrolyzed in alkalescent aqueous solutions, resulting in the formation of 2-sec-butylphenol, 2-isopropylphenol, m-cresol and α-naphthol, which could be determined by amperometry after capillary electrophoretic separation.

用毛细管电泳-安培检测法测得酚类化合物的量，然后分别换算为等当量的氨基甲酸酯类农药的量，从而建立了用毛细管电泳-安培检测法检测所选四种农药残留的方法。

Several carbonates are synthesized from carbamates either with hydrochloride as coreactant or with zeolites as catalysts under low temperature and pressure, whereas high yield is achieved through either the formation of ammonium chloride as precipitate or the adsorption of ammonia in zeolites.

在较低温度和压力下，以氯化氢为共反应物或沸石分子筛为催化剂，由氨基甲酸酯与醇反应合成多种碳酸酯。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失