查询词典 reaction

Benzyloxy benzoyldimethylsulfoxide was prepared by the reaction of ethyl 4-benzyloxybenzoate and dimethyl sulfoxide in the presence of sodium hydride, followed by Pummerer reaction with concentrated hydrochloric acid to afford eo-hydroxy-co-thio-methyl-(4/-benzyloxy) acetophenone, which reacted with urea, thiosemicarbazide, semicarbazide hydrochloride and o-phenylenediamine to give imidazolidine-2,4-dione, l,2,4-triazine-3- one and quinoxaline derivatives, respectively.

本文用4-苄氧基苯甲酸乙酯和二甲亚砜为原料，在氢化钠存在下反应，合成了(4′-苄氧基)-苯甲酰基-二甲亚砜。研究了该亚砜在浓盐酸的存在下发生的Pummerer重排反应，用重排产物ω-羟基-ω-甲硫基-(4′-苄氧基)-苯乙酮分别与尿素、氨基脲、氨基硫脲和邻苯二胺反应合成了2，4-咪唑啉-二酮、1，2，4-三嗪-3-酮、喹喔啉等含氮杂环化合物。

Pharmacodynamic action ; Xiaochaihu Oral Liquid ; Radix Bupleuri ; acute liver function damage of rat ; fever reaction of rabbit ; carbon particle clearance of mice ; delayed anaphylaxis reaction

昆明种小鼠；生理盐水；小剂量；碳粒廓清速率；小柴胡汤口服液；四氯化碳；鸡红细胞；迟发性过敏反应；角叉菜胶；药理作用

Many factors affecting the radiochemical synthesis of 18 F SFMB including reaction solvents, temperature, the mole ratio of K/222 to K 2CO 3 and reaction time are studied.

探讨了反应溶剂、温度、K/ 2 2 2与K2 CO3 的摩尔比及反应时间等诸因素对18F SFMB放化合成的影响。

The influence of the addition of element S of vulcanization reaction,the ester-exchange agent/rape seed oil of ester-exchange reaction and the R-OH/ P_2O_5 of phosphate re...

试验考察了硫化反应的硫化剂添加量、酯交换反应的交换剂与油的摩尔比以及磷酸酯化反应的R—OH与P2O5的摩尔比对产物结构和性能的影响。

The optimum hydrolytic conditions of razor clam for neutral protease were : enzyme concentration 2.4%, hydrolysis temperature 50癈, substrate concentration 1:3, pH 7 and reaction time 6 hrs with the degree of hydrolysis and extraction rate of total nitrogen 42.46% and 83.04% respectively; and foracid protease they were: en/yme concentration 6.0%, hydrolysis temperature 50癈, substrate concentration 1:4, pH3.5 and reaction time 5 hrs with the degree of hydrolysis and extraction rate of total nitrogen 46.37% and 87.94% respectively, the hydrolysate being clear light yellow. For the combination of two kinds of proteases they were: first hydrolyzing with 2.6% f 1 avouryme for 3 hrs, then hydrolyzing with 2.4% neutral protease for 3 hrs with the degree of hydrolysis and extraction rtiie of total nitrogen 4-1.57% and 86.95% respectively.

最后综合考虑了水解率、总氮回收率和水解液的色泽、澄清度等指标，得出了较适宜的酶种为单酶以枯草杆菌中性蛋白酶和酸性蛋白酶效果较好，双酶以风味蛋白酶与枯草杆菌中性蛋白酶双酶组合水解效果较好，其适宜的水解工艺条件分别为：枯草杆菌中性蛋白酶加酶量为2.4%，水解温度50℃，料水比1：3，pH值中性条件下水解6h，绕蛙蛋白质的水解率和总氮回收率分别为42.46%和83.04%；酸性蛋白酶水解编蛙肉的适宜的工艺条件为加酶量6.0%、水解温度50℃，料水比l：4，pH值3.5条件下水解sh，水解率为46.37%，总氮回收率为87.94%，水解液呈较清澈的淡黄色；双酶采用先用2.6%风味酶水解3h后，再加入2.4%中性蛋白酶水解3h，水解率达44.57%，总氮回收率为86.95%。

The reactant in an induced reaction that has an increased rate of reaction in the presence of the ''.

受体，受容体在一个诱导反应中的反应物，因诱导剂的存在而有增加的反应速度

Supercavitating torpedo ; metal-water reaction fuel ; water reaction engine ; propulsion system

超空泡鱼雷；金属水反应燃料；水反应发动机；推进系统

The influence of solvent, reaction temperature, reaction time and pH value was discussed.

探讨了溶剂、反应温度、反应时间、pH等对反应产物的影响，利用红外光谱。

The effect of reaction temperature, time, solvent and material ratio on each reaction was discussed.

考察了反应温度、时间、溶剂等因素对反应的影响，优化了反应条件。

The influences of fiber diameter, reaction time and temperature on the reaction were studied.

研究了纤维的纤度、反应时间、反应温度等因素对功能化反应的影响。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。