酯

Objective To detect the resistance index and esterase activity of each generation of DDVP-resistant Culex mosquitoes and analyze the relationship between insecticide resistance and esterase.

目的检测抗DDVP品系各世代的抗性指数及蚊体内酯酶的活性，探讨蚊虫抗性与酯酶的关系。

Objective To study the activity of relationship between esterase,acetylcholinesterase and the resistance to propoxur in the larva of Culex pipiens pallens .

目的 研究淡色库蚊对残杀威抗性与酯酶和乙酰胆碱酯酶的关系。

The influence of catalyst on the copolymerization of epoxy and cyanate was investigated,and the mechanism of their copolymerization was discussed.

摘 要 研究了催化剂对环氧树脂与氰酸酯树脂的共聚固化反应行为的影响，并初步探索氰酸酯/环氧固化的反应历程。

Morphology of the modified cyanate ester resin system toughen ed by polyetherimide was investigated.

对聚醚酰亚胺增韧改性氰酸酯树脂体系的断面形态和冲击韧性进行分析，并对改性氰酸酯树脂体系的介电性能进行表征和分析。

The dispersion of particles in cyanate ester was also observed with the aid of TEM. Moreover, the effect of the content of particles on the dielectric properties of cyanate ester composites was investigated.

利用透射电子显微镜，观察了粒子在氰酸酯基体中的分散情况，分析并讨论了添加粒子对氰酸酯复合材料介电性能的影响。

And they have been used in composites, adhesives, and electrics. However, like most other thermosets, they have suffered the drawback of brittleness. At the same time, reports on cyanate esters are all focused on bisphenol A dicyanate ester.

但像其它的热固性树脂一样，氰酸酯树脂普遍存在脆的弱点，限制了其应用，同时，目前关于这类性能优异的树脂基体的研究都集中在双酚A型氰酸酯树脂上。

The influence of a transition metal acetylacetone catalyst on the behavior, mechanism and product structure of the co-curing of epoxy and cyanate was studied by DSC and FT-IR.

应用DSC、FT-IR对乙酰丙酮过渡金属络合物催化促进的环氧树酯与氰酸酯共固化反应行为、历程以及固化物的结构特征进行了研究探讨。

The wastewater from gum benzion production contains benzaldehyde, cyanide, gum benzoin and ethyl benzoate. When the cyanide is determined by isonicotinic acidpyrazalon method, the ethyl benzoate is distilled and goes into NaOH absorption liquid with cyanide in the process of predistillation, because its boiling point is low. Thus the absorption liquid produces a great deal of foam and feculence.

摘要］有机化工产品安息香生产废水中含有苯甲醛、氰化物、安息香和苯甲酸乙酯，在用异烟酸吡唑啉酮法对其进行氰化物测定时，由于油酯类的沸点较低，在预蒸馏过程中被蒸出和氰化物一起进入NaOH吸收液，使得吸收液产生大量泡沫和沉淀，严重干扰后续比色测定。

At high DS of octanolylated KGM, dodecanolylated KGM, PKGM and octadecenoylated KGM the intercrystalline distances are 2.10, 2.45,2.58 and 3.39nm,respectively,and the effect of DS of KGME on its emulsifying ability has been investigated in aromatic hydrocarbon in water and cycloalkane in water emulsions.

本文用化学方法制备的葡甘聚糖酯从结构上看具有表面活性剂的亲水亲油及聚合物两方面的特性，实验证明，在合适的取代度范围，当葡甘聚糖酯浓度在0.1%～0.01%时，其有较强的乳化力。

In order to know the nemsticifal activities substance and the mechanisms of Datura metel Linn, total alkaloids from the leaf of Datura metel Linn was extracted and identified, and studied the mechanism of it by determining the activity of Ache and the Ach content of Meloidogyne incognita.

为了解白花曼陀罗的杀线活性物质及其作用机理，对白花曼陀罗叶的总生物碱进行了提取鉴定，并通过测定乙酰胆碱酯酶活性及乙酰胆碱含量研究其作用机理，结果表明：生物碱是白花曼陀罗的重要杀线活性物质，可抑制线虫乙酰胆碱酯酶活性，提高线虫乙酰胆碱含量，直接作用于线虫的神经系统。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。