查询词典 carbamate

Methyl-l, 3-oxazine-2,4-dione are prepared from ethyl acetoacetate and ethyl carbamate at 140 for 6h, catalysted by zinc acetate, giving to 48.8% yields which is 33% more than the literature value.

选用醋酸锌作催化剂，使乙酰乙酸乙酯与氨基甲酸酯在140℃反应6h，合成6-甲基-1，3-噁嗪-2，4-二酮，产率达48.8％，较文献报道值高出了33％。

Latest researches in the catalysts for synthesis of carbamate by ammonolysis of dimethyl carbonate;2. Progress in the catalysts for synthesis of carbamates by ammonolysis of dimethyl carbonate;3.4,4′-Methylene diphenyl carbamatewas synthesized by ammonolysis of dimethyl carbonate, a substitute of phosgene, and 4,4′-diaminodiphenyl methane with anhydrous zinc acetate as catalyst.

用碳酸二甲酯代替光气，以4，4′-二氨基二苯基甲烷为原料，在无水醋酸锌催化剂的作用下，经胺解反应合成了4，4′-二苯甲烷二氨基甲酸甲酯；测定了MDC的熔点；采用傅里叶变换红外光谱和氢核磁共振对产品结构进行了表征；考察了反应温度、DMC用量、反应压力、反应时间、催化剂用量对MDC收率的影响。

In this test, metabolites and enzyme activities involved in energy metabolism in Cysticercus cellulosae were determined systematicly in vivo and in vitro and under action of drugs.The principles of variation of energy metabolism in Cysticercus cellulosae and mechanism of action of the benzimidazol carbamate drugs were illustrated so as to select an effective drug against immature and mature cysticerci and to provide a theoretical and experimental chemotherapy.

本研究首次系统地测定了体内发育过程中、体外培养条件下及抗囊药物作用下猪囊尾蚴能量代谢的有关物质含量和酶活性的变化，阐明了猪囊尾蚴的能量代谢变化规律和苯并咪唑氨基甲酸酯类药物作用机理，为筛选有效的抗囊药物以及为药物治疗提供了重要的实验和理论依据。

Inhabition of NX0 and NX1 on the activities of fumaric reductase in tissue homogenate of cysticerci was tested. The results showed that the two kinds of benzimidazol carbamate drugs could inhabite the activity of fumaric reductase complex noncompetently.

测试了NX0和NX1对猪囊尾蚴组织匀浆延胡索酸还原酶活性的抑制作用，结果表明两种苯并咪唑氨基甲酸酯类药物非竞争性抑制延胡索酸还原酶复合体活性。

Two carbonyl triruthenium metal clusters were separated with cellulose tris (3, 5-dimethylphenyl-carbamate) as chiral stationary phase. The effects of the optimal conditions were determined according to the effects of the mobile phase composition, the flow rate of the mobile phase and the solvents of the samples etc on the chiral separation of the metal clusters.

应用纤维素三（3， 5-二甲基苯基氨基甲酸酯）手性固定相对2种羰基钌金属簇合物进行了拆分，通过流动相组成、流速和样品溶剂等条件对拆分影响的考察对拆分条件进行了优化。

The insectide mixtures of pyrethroids or organochloride with organophosphate or carbamate may have better efficacy against DDVP-resistant mosquitoes,and the mixed use of the insecticide with synergists may also provide better efficacy.

当淡色库蚊对DDVP产生抗药性后，氯氰菊酯或三氯杀虫酯与DDVP或残杀威混用均能取得较好的防制效果，DDVP与增效剂复配亦有增效作用。

The studies on metabolic enzymes、synergists and neurobioassays suggest that the monooxygenases、esterase and decreased nerve sensitity are involved in resistance to pyrethroids in the resistant HJ-R strain . The resistance to both organophosphorus and carbamate insecticides is mainly caused by metabolic mechanisms. The significantly synergistic effects of Pbo infer that the resistance to carbamata may be principally attributable to monooxygenases detoxification.

代谢酶系、增效作用以及神经电生理研究表明，HJ-R种群对拟除虫菊酯类杀虫剂的抗性是由多功能氧化酶及酯酶代谢增强、神经敏感性降低几个因子综合作用的结果；对有机磷、氨基甲酸酯类杀虫剂的抗性主要是由代谢机制引起，与靶标部位敏感性降低机制抗性无关，Pbo对HJ-R种群突出的增效作用，表明多功能氧化酶代谢在对灭多威的抗性中可能起主导作用。

A series of Bi-Zn composite oxide catalysts were prepared by coprecipitation and used for the synthesis of phenyl isocyanate by catalytic decomposition of methyl N-phenyl carbamate.

采用共沉淀法制备了一系列Bi-Zn复合氧化物催化剂并将其用于催化苯氨基甲酸甲酯分解制备苯基异氰酸酯。

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。

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。

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