羧酸酯是重要的化工原料。
Carboxylic acid esters are important chemical raw materials.
目的：合成笼状双环磷酸酯的羧酸酯衍生物。
Aim: To synthesize carboxylate derivatives of caged bicyclic phosphate.
桃蚜的抗药性主要是由羧酸酯酶E4扩增引起的。
The resistance of green peach aphids to insecticides results mainly from the enhance the levels of the E4 carboxylesterase.
二甲苯酚与一卤代羧酸酯的反应产率在81%以上。
The yield of O-alkylation of 2,5-dimethylphenol with the monohalogen carboxylic esters is above 81%.
羧酸酯酶A2表达纯化及特征分析为其应用奠定了基础。
The study on the expression and characterization of carboxylesterase A2 in E. coli is more useful for its future application.
羧酸酯的合成主要用硫酸作催化剂，但这种催化剂有许多缺点。
Sulfuric acid is main catalyst for the synthesis of carboxylic acid esters.
降低血淋巴蛋白质含量，诱导菜青虫血淋巴羧酸酯酶活性的提高；
Meanwhile, the content of hemolymph protein was reduced and the CarE activity in hemolymph was induced within the exposure time.
还测试了酯酶同功酶带为3条和羧酸酯酶、乙酰胆碱酯酶的比活力。
The activity of carboxylesterase and cholinesterase were detected. Esterase Zymograms form polyacrylamide gel electrophoresis revealed 3 bands.
羧酸酯酶能有效地催化酯类和酰胺类化合物水解，属丝氨酸水解酶家族。
Carboxylesterases efficiently catalyze the hydrolysis of ester - and amide-containing chemicals, and are classified into the serine hydrolase super family.
酶动力学特征研究表明，羧酸酯酶活性提高可能与其性质发生的改变无关。
The result of studies on the kinetic parameters (Vmax and Km) of some resistance-related enzymes showed that there were no changes in the quality of carboxylesterase in resistance strains.
由于硫酸作催化剂合成羧酸酯副产物多、产率低、且腐蚀设备、造成环境污染。
Sulfuric acid was used as a catalyst to prepare acetic esters with more by-product, low yield, equipment corrosion and acid wastewater.
寄主植物对甜菜夜蛾的生长发育、羧酸酯酶活性及杀虫剂的敏感性有显著影响。
The growth and esterase activity of beet armyworms and their sensitivity to insecticides were apparently influenced by their host plants.
寄主植物对甜菜夜蛾的生长发育、羧酸酯酶活性及杀虫剂的敏感性有显著影响。
The effect of different spraying methods of insecticides on the resistance developing and the carboxylesterase activity of Myzus percicae;
寄主植物对甜菜夜蛾的生长发育、羧酸酯酶活性及杀虫剂的敏感性有显著影响。
The insecticide resistant of the Blattella germanica in Nanchang and its relationship with the biochemical characterization of Carboxylesterase;
用热烘法研究了羧酸酯稀土（CERES）对聚氯乙烯（PVC）的热氧稳定作用。
Thermal-oxidative stability of poly (vinyl chloride) (PVC) by carboxylic ester rare earth salt (CERES) has been studied during thermoexidativeageing in static condition in air.
试验结果发现，该类催化剂对酯化反应有很高的催化活性，可使羧酸酯获得良好的收率。
The results show that they have high catalyzing-activity in the reaction of synthesizing esters such as acetic benzyl-ester, and high yield can be obtained by this new synthesis method.
上述结果证明羧酸酯酶和谷胱甘肽S-转移酶活力增强在棉蚜对吡虫啉的抗性中起重要作用。
The results showed that the enhancement of activities of CarE and GSTs would be the main metabolic mechanism in the resistance of A. gossypii to imidacloprid.
烯啶虫胺对抗吡虫啉棉蚜的羧酸酯酶、乙酰胆碱酯酶及谷胱甘肽-S-转移酶的抑制作用较小。
Nitenpyram showed little effect on the activities of CarE, GST and AChE of the imidacloprid-resistant cotton aphid.
有机锡羧酸酯在诸如，杀虫剂、杀菌剂、抗癌药物等许多领域有着广泛的应用而受到广泛的关注。
Organotin carboxylates have attracted considerable attention due to their wide applications in many fields, for example as pesticidal, bactericidal and antitumor agents.
本文对比了在离体条件下美洲大蠊消化道组织匀浆羧酸酯酶与胆碱酯酶对敌百虫的亲和力，前者比后者大23倍。
Enzyme kinetics investigation revealed that the affinity of gut carboxylesterase of Periplaneta americana (L. ) for dipterex was 23 times greater than that with the cholinesterase.
类皮质素-17,21 -二羧酸酯和类皮质素- 17 -羧酸酯- 21 -碳酸酯，其制备方法和含有它们的药物。
Corticoid 17, 21-dicarboxylic esters and corticosteroid 17-carboxylic ester 21-carbonic esters, processes for their preparation and pharmaceuticals containing these compounds.
介绍了硼氢化钠还原羧酸及其衍生物的机理，综述了硼氢化钠在羧酸、羧酸酯、酰胺、酰氯和氨基酸及其衍生物还原中的应用。
In this article, the mechanism and the methods used for the reduction of carboxylic acids, esters, amides, acid chloride, amino acids and the...
各抗性种群的羧酸酯酶的活性水平明显高于敏感种群，其中以洪塘菜缢管蚜种群的羧酸酯酶活性水平最高，这跟各种群的抗药性监测结果亦相吻合。
Thereinto, the activity level of CartE in Hongtang L. erysimi population is the highest among the four field populations, which is tally to the result of drug-fast test on each population.
这种配方的构成包括草甘膦或者草甘膦的一种盐、酯或其他产物，一种二羧酸或者其产物，以及一种制药可接受的载体。
The formulation comprises a glyphosate or a salt, ester or other derivative thereof, a dicarboxylic acid or a derivative thereof, and a pharmaceutically acceptable vehicle.
经应用评价结果表明，该羧酸混合酯是一种性能优异的选煤浮选剂。
The results of application evaluation indicate that this mixed carboxylic ester is a kind of flotation agent for coal preparation with good performance.
与水、活性氢、醇、酚、胺、酰胺、羧酸、烯烃、醛、酮、酯加成得到的新化合物，可作脱水剂和氧化剂使用。
Many new compounds can be obtained by addition with water, hydrogen, alcohols, phenols, amines, amides, carboxylic acids, olefins, aldehydes, ketones, esters, etc.
通过一元羧酸和二乙烯基醚的反应，我们得到了一种新颖的酯缩醛结构分子玻璃。
A novel family of ester acetal molecular glass materials has been created by the reaction between monocarboxylic acid and divinyl ethers.
有双环氨基取代的吡啶酮羧酸衍生物，其酯及盐，以及可用作其中间体的双环类胺。
Pyridonecarboxylic acid derivative substituted by bicyclic amino group, ester thereof, salt thereof, and bicyclic amine as intermediate thereof.
本文合成了分子中含有硫醚基团和另一个基团如羧酸、酯、酰胺的萃取剂。
In this paper several extractants containing a thioether group and another group such as carboxylic acid, ester or amide were synthesized.
在碱性条件下，通过空气氧化将E环转变为环己二羧酸酐形成红紫素18甲酯衍生物；
In basic condition E ring was converted into the cyclohexanedicarboxylic anhydride to form purpurin 18 derivatives by the air oxidation.
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