1、

Nipagin esters were synthesized by the esterification of dodecyl and octadecyl alcohol with p-hydroxybenzoic acid in the presence of vitamin C.

以维生素C为催化剂,对羟基苯甲酸和十六醇及十八醇为原料合成尼泊金十六酯与尼泊金十八酯。

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2、

Conductive Polyaniline was prepared by chemical oxidation using aniline as the starting material and hydrocarbon as the doping agent.

以苯胺为主要原料,盐酸作掺杂剂,采用化学氧化法制备出导电聚苯胺。

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3、

Common donor dopants are Y 3+ and Nb 5+ Usually donor doped content lies in range from o 2 to 0 3 percent Factors influencing on the content are purity of used raw materials, flux for sintering, donor doping process and the others.

常用的施主加入物是Y3+和Nb5+,施主掺入量一般控制在x=0.2%~0.3%为宜。影响施主掺入量的因素有原料纯度、烧结助剂、掺入施主的工艺等。

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4、

So we determined the physicochemical index for raw material selection of cefuroxime sodium reference standard.

据此确定了头孢呋辛钠标准物质原料选择的理化指标。

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5、

Preparations of cefotiam intermediate 7-ACMT and cefazolin intermediate TDA were discussed as raw material of 7-ACA.

以D-7-ACA为原料,探讨了头孢替安中间体7-ACMT和头孢唑林中间体TDA的合成。

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6、

SiC was prepared with siliceous colliery waste, quartzite, anthracite coal and weakly caking coal by Acheson process. The microstructure of siliceous colliery waste was investigated by SEM.

分别以硅质煤矸石、石英砂与弱粘煤、无烟煤作原料用Acheson工艺合成了SiC,并研究了硅质煤矸石的微观结构。

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7、

This work mainly focuses on: ( 1) A series of phosphate catalysts have been prepared by precipitation method and sol-gel method respectively. The effects of preparing method, materials, conditions of drying and calcination on the properties of the catalysts have been investigated.

本研究主要包括以下内容:(1)分别以沉淀法和溶胶-凝胶法制备磷酸盐系列催化剂,考察了制备方法、原料、干燥、煅烧等条件对催化剂性能的影响。

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8、

At present, we over-focus on stock prices brought about by the loss, in fact, prices of raw materials for Chinese enterprises is a good opportunity is in the throes of inventory digestion period.

目前大家过分关注于存货跌价带来的损失上,其实原料价格暴跌对于中国企业更是一个很好的机会,目前正处于消化存货的阵痛期。

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9、

Kuerle fragrant pear pomace is used as raw materials to extract soluble dietary fiber with single factor experiments and orthogonal tests.

本研究以苹果梨果渣为原料,采用化学法分离不溶性膳食纤维,并测定了其化学组分和物理特性。

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10、

Diethyl glutarate was synthesized using glutaric anhydride and ethanol, which were separated from dicarboxylic acid, as raw material, heteropoly acid as catalyst.

以从二羧酸中分离出的戊二酸酐和乙醇为原料,用杂多酸为催化剂,合成了戊二酸二乙酯。

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11、

Diethyl succinate was synthesized from succinic acide and absolute alcohol with anhydrous ferric chloride catalyst under normal atmosphere. Water clarifying agent& Ferric chloride

报道了以丁二酸和无水乙醇为原料,在无水氯化铁催化下合成丁二酸二乙酯的反应条件。GB4482-1993净水剂氯化铁

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12、

Objective To re-evaluation safety of azithromycin lactobionate ( AZL) for injection produced by refined raw material drug.

目的评价用精制国产乳糖酸阿奇霉素原料药生产的注射用乳糖酸阿奇霉素(AZL)的安全性。

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13、

One of the more difficult processes is the manufacture a sterile BPC.

许多复杂工艺之一是制造无菌的原料药.

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14、

Some manufacturers list the specific solvent for each BPC and intermediate.

一些制造商列出了每一原料药和中间体的具体溶剂.

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15、

Typically, however, ethylene oxide does not penetrate the BPC in this powdered form.

典型地, 然而, 环氧乙烷并不会以粉末的形式渗透到原料药中.

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16、

Objective: To establish a method for quantification of residual methanol, n-butanol and 2-methoxyethanol in drug substance ioversol.

目的:建立碘佛醇原料药中甲醇、正丁醇和2-甲氧基乙醇残留量的测定方法。

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17、

The possibility of AFB _ 1 infection in soy sauce products exists in raw material and technology.

酱油产品无论在原料上还是在工艺上都有感染黄曲霉毒素的可能性.

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18、

An in-store bakery that produces most of its products from raw ingredients.

大多数商品由门店烘焙将原料加工成成品.

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19、

Zeolite 4A with good quality is synthesized in semiwork microwave oven on the basis of successful synthesis of zeolite 4A from kaolin in household microwave oven, and the weight of the product can reach kilogram grade every time.

以高岭土为原料在家用微波炉合成4A分子筛的基础上,扩展到半工业微波炉上合成了质量较好的4A分子筛,产物的质量可达公斤级。

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20、

The study discusses the optimal condition of hydrochloric acid hydrolysis of defatted silkworm chrysalis by orthogonal tabel L9 ( 34).

以脱脂蚕蛹为原料,采用正交实验L9(34)优选盐酸水解工艺条件。

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