酯

The cold-shock treatment with ozonated water (ozone concentration 2 mg/L, dipping 5 min in the 1 ± 1 ℃cold water) reduced quantities of bacteria and funguses of winter-jujube, and decreased the rate of loss weight, and extended shelf-life of the fruit. By the ultrastructures of winter-jujube pericarp, cold-shock treatment with ozonated water could clean out the waxiness of crackle and lenticel, which is helpful for exchange of fruit internal CO2 and air, and inhibit accumulating of ethanol concentration.

臭氧水冷激处理(臭氧浓度为2mg/L，浸泡时间5min，水温1±1℃)可以明显降低冬枣表面细菌和真菌的数量，减少失重率，延缓冬枣硬度的下降，提高冬枣的货架期；从微观结构观察发现，臭氧水冷激处理可以清洗冬枣表皮裂缝和皮孔的蜡质，有助于枣果内部CO_2气体的排逸，从而延缓了冬枣的酒化；此外，冷激处理可以明显降低冬枣表面残留的农药：如马拉硫磷、氯氰菊酯和溴氰菊酯农药的含量，提高枣果的食用安全性。

Under the conditions of homogeneous liquation, the reaction of ester exchange is completed.

以蔗糖、植物油为原料，乙醇钠为催化剂，脂肪酸皂及SE为促进剂，在均相熔融状态下进行酯交换反应合成蔗糖酯。

Malathion resistance of brown planthopper was selected in laboratory and the successive changes in carboxy-lesterase and AChE were also analyzed.

对室内筛选褐飞虱Nilaparvata lugens Stal对马拉硫磷抗性及羧酸酯酶、乙酰胆碱酯酶的连续变化进行了研究。

The syntheses and spectral characteristics of bism-methylbenzene maleate and bis-m-methylbenzene phthalate is reported in this paper.

报道了顺丁烯二酸二间甲苯酯和邻苯二甲酸二间甲苯酯的合成与光谱性质。

In order to improve the radiation resistance of PPC, the influence of γ-rays radiation on poly and poly were investigated, and radiation grafting reaction of maleic acid on PPC was explored.

中文摘要本文以提高二氧化碳－环氧化物共聚物的耐辐射性能为目的，研究了γ-射线辐射对聚碳酸丙烯酯和聚碳酸环己烯酯的结构与性能的影响，并采用辐射接枝或物理共混方法对PPC进行了改性研究。

AIM to observe the induction on UK by propylene glycol mannite sulfate in rat blood and try to reveal the mechanism of antithrombotic of PGMS on gene level.

目的 观察甘糖酯对大鼠尿激酶的诱导作用，从基因水平上探讨甘糖酯的抗栓机制。

Under the catalyst, the polymerization retarder, the including water medicinal preparation existence condition, the methylacrylic acid and the polyethylene glycol single methyl ether (400) direct esterification synthesis methylacrylic acid polyethylene glycol single methyl ether (400) ester, and the influence factors of the catalyst, polymerization retarder, including water medicinal preparation has mellowly carried on the comparison.

摘要在催化剂、阻聚剂、带水剂存在的条件下，由甲基丙烯酸与聚乙二醇单甲醚(400)直接酯化合成甲基丙烯酸聚乙二醇单甲醚(400)酯，并对酸醇比、催化剂、阻聚剂、带水剂等影响因素进行了比较。

The research indicated that under the compound use of hydroquinone and methyl quinone or independent use of phenothiazines or nitrogen oxygen free radical made the polymerization retarder, opposite-methyl-phenylsulfon made the esterification catalyst, toluol made the backflow including water condition, the acid mellowly compared to when it was 1.15, the production rate of the synthesis methylacrylic acid polyethylene glycol single methyl ether (400) ester may achieve 98.9%, was extremely similar to the overseas product functional group structure.

研究表明，在氢醌、甲醌复合使用或者单独使用吩噻嗪、氮氧自由基哌啶酮作阻聚剂，对甲苯磺酸作酯化催化剂、甲苯作回流带水的条件下、酸醇比为1.5时，合成的甲基丙烯酸聚乙二醇单甲醚(400)酯产率可以达到98.9%，与国外产品官能团结构十分相似。

Using 0.10% glycerin monostearate and 0.10% sugar ester as the emulsifier, 0.02% carrageenan, 0.10% locust bean gum and 0.15% sodium alginate as the stabilizer renders ice-cream a smooth taste and improved meltability resistance.

使用0.10%单甘酯和0.10%蔗糖酯作为乳化剂，0.02%卡拉胶、0.10%刺槐豆胶和0.15%海藻酸钠作为增稠剂，生产的冰淇淋，口感细腻润滑，抗融性高。

And the mensuration of the sulfated content in lycium barbarum Polysaccharides sulfates was improved.

采用微波辅助的方法对枸杞多糖的硫酸酯化进行研究，改进了枸杞多糖硫酸酯硫酸根含量的测定方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。