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- However, the MPH is reversibly inactivated by diethyl pyrocarbonate (DEPC) and the inactivation rate is 9.6 h~(-1). When adding neutralized hydroxylamine, the enzymatic activity of inactivated-MPH was restored to about 60% of initial activity. 然而二乙基焦磷酸酯对组氨酸侧链的化学修饰引起酶活性的大幅度的下降，其对酶活性的抑制率达到9.;6h~(-1)，当在酶的抑制体系中加了羟胺后，MPH的酶活力能够恢复到原来的60%25。
- diethyl pyrocarbonate(DEPC) 焦碳酸二乙酯
- diethyl pyrocarbonate 二乙基焦磷酰胺, 二乙焦碳酸盐
- Secondly, development of studies on pyrocarbon is interpreted in detail. 介绍了热解炭的微观结构和石墨化度及其沉积机理的新发展。
- We have gotten 81.67% N,N diethyl o methyl aniline from the residue. 由此破坏了剩余过渡液中的共沸组成，为过渡液中其他组分的回收利用创造了条件。
- It is also known that sodium ethylate and diethyl phenylmalonate interact together to give ethyl Phenylacetate and diethyl carbonate. 众所周知，乙醇纳和二乙基苯基丙二酸酯反应可以得到乙基乙酸苯酯和二乙基碳酸酯。
- Results show that the microstructure of C/C composites mainly consisted of rough laminar pyrocarbon. 结果表明：C/C复合材料的组织主要以粗糙层为主；
- Animal and vegetable fats and oils - Determination of unsaponifiable matter - Method using diethyl ether extraction. 动植物脂肪和油。不可皂化物的测定。二已醚萃取法。
- With diethyl malonate as the extractant,the condition of extracting gold the electronic scrap was studied. 研究了采用萃取剂丙二酸二乙酯回收电子废弃物中金的方法。
- Through nitrosation, hydrogenate reducion, and acylate three steps, the yield surpass 80% for the diethyl malonate. 收率相对于丙二酸二乙酯达到了80%25以上。
- N,N-Diisopropylethylamine(DIPEA) was prepared from diisopropylamine (DIPA) and diethyl sulfate (Et_2SO_4). 以二异丙胺 (DIPA)、硫酸二乙酯 (Et2 SO4 )为原料合成N ,N 二异丙基乙基胺 (DIPEA)。
- The results show that the microstructure of pyrocarbon has great influence on the ablation performances of C/C composites. 结果表明：热解炭结构对C/C复合材料烧蚀性能有较大的影响。
- The preparation of 3,5-dinitroacetophenone from 3,5-dinitrobenzoic acid and diethyl malonate has been investigated. 本文采用丙二酸二乙酯合成法,以3,5-二硝基苯甲酸为原料,经酰化、缩合、脱酸等步骤合成了3,5-二硝基苯乙酮。
- Xu H J,Xiong X,Huang B Y,et al.Friction properties of carbon carbon composites with different pyrocarbon structure[J].Tribology,2003,23(4):344-349. [2]徐惠娟;熊翔;黄伯云;等.;不同热解炭结构的炭炭复合材料的摩擦特性[J]
- The chemisorption was the important characteristic of the interaction of jamesonite with diethyl dithiocarbamate. 化学吸附是乙硫氮与脆硫锑铅矿相互作用的主要特征。
- The micro morphologies and textural characteristics of the pyrocarbon and fracture surfaces were observed by polarized light microscopy and SEM. 借助偏光显微镜及扫描电子显微镜观察了基体热解炭的微观组织结构及断口形貌特征；
- Aim\ Enanthal diethyl acetal is prepared with heptaldehyde and triethyl orthoformate as raw materials. 目的研究以庚醛和原甲酸三乙酯为原料制备庚醛二乙缩醛的工艺条件。
- The substrate fructose-6-phosphate(F6P),the products fructose-1,6-bisphosphate(FBP) and phosphate(Pi) protected PFP against the DEPC modification,suggesting that the modified histidine residue resides at active sites. 底物F6P、产物果糖1;6-二磷酸(FBP)、P i及激活剂果糖2;6-二磷酸(F2;6BP)均可保护酶免被DEPC失活;底物PP i却没有保护作用.
- To establish a precticable method for quantifying of diethyl ketone(DEK)in the air of workplace. 建立可定量测定工作场所空气中二乙基甲酮(DEK)的实用方法。
- Vapor-phase synthesis of N,N-diethyl aniline via diethyl ether over Al_2O_3 was studied. 采用乙醚作烷基化试剂,在氧化铝催化剂上对气相法N,N-二乙基苯胺的合成进行了研究。
