reagent GRE

They experimented with new reagents and succeeded.

"他们用新试剂做试验,获得成功。"

As chemical reagent and corrodent of integrated plate.

作学试剂和集成电路电镀板的消蚀剂。

The purified polysaccharides is determined by colourimetry with sulfuric acid phenol as colourimetric reagent.

测得多糖的含量为65。

In stead of using butyl nitrite and absolute ethyl-ether as reagents,in an improved method,cupferron.

本文介绍以亚硝酸乙酯代替亚硝酸丁酯,用氯苯代替无水乙醚合成铜铁试剂的新工艺。

Abstract： One-pot synthesis method of diarylmethylamines was investigated using aryl lithium salt，thioformamide and aryl Grignard reagent.

摘 要： 由芳基锂盐、代甲酰胺和芳基格氏试剂一锅法合成取代二芳基甲胺。

Vessels : bell glass, flume, airer, alcohol burner, reagent bottles etc.

钟罩、水槽、干燥器、酒精灯和各种规格试剂瓶。

The phenols were O-alkylated with 100% conversion and 100% selectivities using phenacyl bromide and benzyl bromide as alkylating reagents.

用溴代苯乙酮和溴苄为烷基试剂,以高产率和100%的转率以及100%的选择性得到酚的O-烷基产物。

Synthesis of alkylated chlorosilane by Grignard reagent has been investigated,which provides a good way for preparation of organo-silicon compounds.

本文研究用格氏法制备烷基取代氯硅烷的方法,为有机硅合物的研制一个较好的途径。

Synthesis of polyethenoxyether phosphate using polyethenoxyether as initiator and using phosphorus pentoxide as parkerizing reagent, and its application were studied.

本文介绍以聚氧乙烯醚为起始剂，五氧二磷为磷剂合成聚氧乙烯醚磷酸酯的过程；并且对其应用也简要地加以说明。

Among other reagents used have been ??and titanous ion; a mixture of ferrous ion, oxygen, ascorbic acid , and ethylenetetraaminetetraacetic acid.

使用过的其它试剂有?Ш脱穷牙胱印⒀翘?离子氧，抗坏血酸和乙四胺四乙酸混合物。

Contradistinctive test and statistic analysis were conducted among nine kinds of diagnostic reagents according to golden rule with western Blot (WB).

以免疫印迹法(WB)为金标准，用9种诊断试剂进行对比检测并统计。

Gates expresses, so far, people should value aguish influence, should throw more measure and medicines and chemical reagents and aguish fight.

盖茨表示，到目前为止，人们应该重视疟疾的影响，应该投入更多的措施及药品与疟疾斗争。

Three strategies (additive, chiral auxiliary or chiral reagent) were developed to improve the diastereoselectivity or enantioselectivity of the ylide cyclopropanation reactions.

通过添加剂、手性辅基、手性试剂等3种策略,别控制反应的非对映选择性和对映选择性。

A new method for determination of water content in ammonium-uranyl tricarbonate by Karl -Fisher reagent titration is described in this paper.

本文叙述卡尔·费休尔试剂滴定法测定三碳酸铀酰铵中水的方法,详细研究测定水的各种条件,特别是铀、铵和碳酸根的干扰情况。

Thanks to all the staff, SINNOWA has developed international-level fully automatic clinical chemistry analyzer, Coagulometer, Microplate Reader, Hematology Analyzer and diagnostic reagents.

在全体员工共同努力下，公司先后开发出达到国际先进水平的全自动生仪、半自动生仪、血液仪、血凝仪、酶标仪、多种诊断试剂等系列产品。

The selective oxidation of ethers by chromic reagent, peroxide, nitric acid, oxygen and ozonide, as well as the ethers anodic oxidation are particularly introduced.

主要介绍铬(Ⅵ)类试剂,过氧物、硝酸、氧和臭氧等各类氧剂对醚选择性氧以及醚的阳极电氧研究状况。

The effects of reactant ratio, reaction time, catalyst amount,the species and amount of deaquation reagent on the yield of benzaldehyde 1,3-butanediol acetal were investigated.

对苯甲醛与1,3-丁二醇在钒磷氧催剂作用下的缩醛反应进行研究,考察醇醛比、反应时间、催剂用量、带水剂种类和体积等因素对苯甲醛1,3-丁二醇缩醛收率的影响。

Research and development for fhe production of pyrocatechol and hydroquinone by reaction of phenol with hydrogen peroxide and percarboxylic acid as hydroxylating reagent are introduced.

着重介绍用过氧氢和过氧羧酸作羟基剂,使苯酚羟基生成邻苯二酚和对苯二酚的研究开发进展。

A series of reversible thermochromic paints were prepared using different kinds of inorganic compounds as filler,cresol red as chromophoric reagent and boric acid as delomorphic reagent.

以甲酚红为发色剂,硼酸为显色剂,选择不同的无机填料,制备出系列可逆热致变色颜料。

Abstract:Objective To discuss the biurea method for determination of total protein in serum of fat emulsion specimens with double reagents on the automated biochemical analyzer.

目的探讨双试剂双缩脲法在全自动生仪中直接测定脂肪乳浊标本血清总蛋白。