乙酸

Synthesis of ethyl lactate is studied by using imidazole ionic liquid as catalyst and ethyl acetate as water-stripping agent.

以酸性咪唑离子液体为催化剂，乙酸乙酯为带水剂研究了乳酸乙酯的合成。

Nsted acid for the activation of the imine and acetic acid (20 mol %) as the non-chiral proton source for the shift of the keto-enol equilibrium.

94%酸、活化的亚胺乙酸(20摩尔%)的非手质子源为转移的酮-烯醇平衡。

A high performance liquid chromatography was established to determine Indole acetic acid content in fermentation broth.

建立了发酵液中吲哚乙酸含量测定的高效液相色谱法。

Owing to phosphorous acid is produced from phosphorus trichloride in industry by hydrolysts, inspissation and crystallization, if we use phosphorus trichloride directly on synthesize N- iminodiacetic acid, not only can simplify operation, but also can red.

原工艺采用的是在酸性条件下高温时将甲醛滴加到亚磷酸与亚氨基二乙酸一钠盐混合溶液中进行反应，考虑到工业上亚磷酸的合成一般采用三氯化磷水解、提浓、结晶制得，直接将三氯化磷用于双甘膦的合成，不仅可以简化操作过程，而且对于降低生产成本和能耗有明显意义。

Originally techniques dropped formaldehyde into the mixture of phosphorous acid and monosodium of imino diacetic acid in high temperature. Owing to phosphorous acid is produced from phosphorus trichloride in industry by hydrolysis, inspissation and crystallization, if we use phosphoros trichloride directly on synthesize N- iminodiacetic acid, not only can simplify operation, but also can reduce the cost and save energy.

原工艺采用的是在酸性条件下高温时将甲醛滴加到亚磷酸与亚氨基二乙酸一钠盐混合溶液中进行反应，考虑到工业上亚磷酸的合成一般采用三氯化磷水解、提浓、结晶制得，直接将三氯化磷用于双甘膦的合成，不仅可以简化操作过程，而且对于降低生产成本和能耗有明显意义。

To study the improvement on diagnosis of Barren esophagus with instillation of acetic acid.

目的 研究内镜下乙酸染色对於诊断Barrett食管(Barrett's esophagus， BE)的帮助。

A novel reversed-phase ion-pair high performance liquid chromatographic method was developed for separation and determination of sodium iron ethylenediaminetetra-acetate in iron-fortified soy sauce.

建立了用反相离子对高效液相色谱法分离和测定铁强化酱油中的铁营养强化剂乙二胺四乙酸铁钠的方法。

The methanogenic bacteria strains with different growth substance were easily isolated on the media with different chemical composition.

在培养墓中同时加入营养基质甲酸钠、乙酸钠、甲醇以及注入氢和二氧化碳的混合物，使以各种生长基质为底物的产甲烷细菌在一种培养基比较容易被分离出来。

The antibiotic substance was isolated and purified primary using the methods of solvent extraction and Thin Layer Chromatography. The results showed that the antibiotic substance contained four components, and the component Ⅰ and Ⅱ had bioactivity against Cmm.

通过乙酸乙酯抽提、旋转蒸发制备的活性物质粗提液经薄层层析分析后，共分离出四个组份，其中仅组份Ⅰ与组份Ⅱ对番茄溃疡病菌表现抑制作用；紫外及可见光区的吸收峰分别为：253 nm、424 nm和443 nm。

Isopropyl acetate yield of up to 79.6% was obtained under the optimum condition.

在此条件下乙酸异内酯的产率最高可达79.6%。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新