查询词典 reaction

The effect of reaction conditions such as the initiator concentration, reaction temperature and reaction time on the percent content of carboxyl groups of the derivative was investigated.

探讨了引发剂浓度、反应温度和反应时间对淀粉羧化程度的影响。

The effects of reaction temperature, reaction time, the catalyzer, ratio of material to solution and reaction pressure on the liquefaction were investigated.

考察了反应温度、反应时间、催化剂、料液比、反应压力等对盐藻粉和盐藻渣液化行为的影响。

The effect of the mole ratio reactant, reaction temperature, reaction time , catalyzer on the each reaction were studied.

研究反应物配比、反应温度、反应时间、催化剂用量对各步反应的影响，得到最佳反应条件。

Two steps were included in this reaction, first, sodium alkoxide was synthesized by th reaction between sodamide and cedrol, then cedrol methyl ether was synthesized by methylation reaction between sodium alkoxide and dimethyl sulfate.

反应分两步，首先氨基钠与柏木脑反应生成醇钠，然后醇钠与硫酸二甲酯进行甲基化反应生成甲基柏木醚。

The preparation process includes the following steps: dissolving activator and RE oxide in the molar ratio of 0.01-0.02 in concentrated nitric acid and heating to dry, dissolving the obtain RE nitrate in deionized water to obtain solution of RE nitrate; dissolving soluble tungstate and surfactant in deionized water to obtain tungstate solution; mixing the RE nitrate solution and the tungstate solution through stirring to reaction for 25-60 min to obtain white precipitate; hydrothermal reaction of the precipitate in a reaction kettle at 100-260 deg.c for 24-72 hr; centrifugally separating, washing and drying to obtain the product.

浓硝酸的加入量保证稀土氧化物溶解就可以，过量的硝酸可以加热除去；将可溶性钨酸盐和表面活性剂溶解于去离子水中，得到钨酸盐溶液，表面活剂性的加入量为反应原料重量的0-30wt％；将稀土硝酸盐溶液加入到钨酸盐溶液中搅拌，发生沉淀反应，磁力搅拌时间为25-60分钟，得到白色沉淀；将含有沉淀物的溶液作为前驱物加入到反应釜中，发生水热反应，反应温度为100-260℃，反应时间为24～72小时；离心分离，洗涤，干燥，即得所需产物。

W by hypodermic in each group,the effect and adverse reaction in each group on renal anemia were observed and compared.results the anemia of each group was improved after treatment.hb,hct and tast in venous group significantly increased than those of oral group,while incidence of adverse reaction decreased as compared to oral group.conclusion fe3 dextran that aid for rhuepo is better than oral group (p.01),and incidence of adverse reaction is lower,thus it is a better way that adds chalybeate to hd patients which is short of iron.

w皮下注射。比较两组患者贫血治疗的效果和副作用。结果治疗后两组患者贫血均改善，其中静脉补铁组的hb、hct及tast较口服补铁组显著升高（p.01），而不良反应发生率较口服补铁组降低。结论静脉注射右旋糖酐氢氧化铁可作为血透伴缺铁患者更理想补铁方式，配合rhuepo治疗贫血，疗效明显优于口服补铁，且不良反应发生率低。［关键词］右旋糖酐氢氧化铁；肾性贫血；血液透析

Effects of ratio of p chlorophenol to 2 chloroacetic acid,reaction temperature,reaction time and pH value on the reaction were studied.

对原料配比、反应温度、反应时间和溶液pH值等各种反应条件的影响作了详细研究。

Following optimal operation conditions are found through orthogonal tests: the excess coefficient of added precipitator 1.2~1.3, the pH value at the reaction end 3~4, the reaction time 30min and the reaction temperature 50℃.

通过正交实验，找出了从提取草酸的优化操作工艺条件：沉淀剂的加入过量系数为1.2~1.3，反应终点pH值3~4，反应时间30min，反应温度50℃。

A series of structural parameters and component parameters of novolac resin were concluded through DEPT 135 spectrum of typical novolac resin with low or high mass fraction,including o-o,o-p and p-p condensation percentage of total condensation reaction;o-,p-percentage of active point in condensation reaction;reaction percentage of different active points;condensation ratioof phenolic resin in double ortho way and the average number of resin.

为准确了解线形酚醛树脂的组成和微细结构，利用高分辨率核磁共振技术中近年发展起来的DEPT135测定方法，测定了线形酚醛树脂的有关结构参数：o-o位缩聚百分率、o-p位缩聚百分率、p-p缩聚百分率；参与缩聚反应活性点中o位占据百分率、p占据百分率以及各个活性点参与反应百分率；同核双邻位缩聚值；不同类型酚醛树脂的平均核体数。

The better reaction conditions of the way are as follows: Reaction temperature is 75C ; The ratio of cyanamide to diethylamineis 1:2.0; Reaction time is 5 hour.

该合成工艺较优的反应条件是，反应温度75℃，氰胺与二乙胺的投料比为1：2.0，反应时间5小时。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。