1) hydrolysis of the amide
酰胺水解
1.
3-Chlorocephalosporin (7-amino-3-chloro-3-cephem-4-carboxylic acid,7-ACCA) as the advanced intermediate of cefaclor was synthesized in high yield started with diphenylmethyl ester of 3-hydroxy-7-phenylaceto-3-cephem-4-carboxylic acid through three-step process including chlorination,hydrolysis of the ester and hydrolysis of the amide.
以3 羟基 7 苯乙酰基 3 头孢烯酸二苯甲酯为原料,经过氯代、酯水解、酰胺水解3步反应制备了药物头孢克洛的中间体3 氯头孢烯酸(7 氨基 3 氯 3 头孢烯 4 酸,7 ACCA),总收率73%。
2) hydrolytic polyacrylamide
水解聚丙烯酰胺
1.
A deep oil displacement and profile control agent CDG for features of Shengtuo Oilfield was prepared with partially hydrolytic polyacrylamide (HPAM) and organic chrome cross linker XE - 1 as main materials.
根据胜坨油田高含水期提高原油采收率的要求,针对其高温、高矿化度、非均质性严重等油藏地质特点,在探讨弱凝胶调驱技术原理的基础上,制备了以部分水解聚丙烯酰胺(HPAM) 和有机铬交联剂XE-1为主剂的CDG深部调驱剂体系。
3) partially hydrolyzed polyacrylamide
水解聚丙烯酰胺
1.
Colloidal HPAM(partially hydrolyzed polyacrylamide)-aluminum citrate dispersion system(HACDS) can be used to adjust the difference in the permeability of deep reservoirs,which is a hopeful method of enhancing recovery factor.
利用胶结砂和填充砂2种多孔介质物理模型,通过岩心流动试验的方法评价了部分水解聚丙烯酰胺/柠檬酸铝胶态分散体系(HACDS)在多孔介质中的流动性能。
4) HPAM
水解聚丙烯酰胺
1.
Several complex coagulants have been chosen from inorganic polymer and organic polymer flocculants to improve the treatment rate of HPAM produced in oilfield wastewater.
从已有的混凝剂中筛选出几种适合处理三次采油废水的无机和有机高分子混凝剂,通过复配提高三次采油废水中部分水解聚丙烯酰胺(HPAM)的去除率,由实验得出了最佳复配pH,在最佳pH和最佳搅拌条件下进行实验,发现聚合双酸铝铁(PAFCS)和阳离子型聚丙烯酰胺〔P(DMDAAC/AM)〕复配能得到最好的效果,HPAM的去除率达到92。
2.
The inhibition mechanism of HPAM on corrosion of A3 carbon steel in oilfield produced water was studied by methods of impedance, polarization curves, oxygen analyzer, viscosity and weight loss.
采用交流阻抗技术、动电位扫描技术、氧含量测量法、粘度测量法和静态挂片失重法等实验方法,探讨了部分水解聚丙烯酰胺对A3钢在油田污水中腐蚀的保护作用。
5) hydrolyzed polyacrylamide
水解聚丙烯酰胺
1.
The effect of surfactant (OP-10) and hydrolyzed polyacrylamide-3430S (HPAM) on concentration measurement of silicon and aluminum have been investigated systematically.
系统地探讨了复合驱替剂体系AS、AP反应液中存在的表面活性剂OP 10和水解聚丙烯酰胺 3430S(HPAM)和对硅、铝元素浓度测定的影响 。
2.
Two assumptions were put forward as a result of analysis of the flow curves of hydrolyzed polyacrylamide-salt solution and the theory of macromolecular solution.
水解聚丙烯酰胺 (ＨＰＡＭ )盐水溶液流变曲线在整个切变速率的范围内存在 3个区域 :在很低的剪切速率 (ｖｓ)下是牛顿流体 ;在极高的剪切速率下也是牛顿流体 ,它们的黏度是一个定值 ,与剪切速率无关 ,分别称为零切黏度 (η0 )和上极限黏度 (η∞) ;在二区域之间为非牛顿性假塑性流体 ,溶液黏度无定值 ,属表观黏度 (ηａ) ,三者间有 η0 >ηａ>η∞[6 ] 。
3.
A kind of chromium gel system of retarded crosslinking made of partially hydrolyzed polyacrylamide(HPAM), sodium bichromate and organic reductant sulfocarbamide was investigated.
缓交联铬冻胶体系由部分水解聚丙烯酰胺、重铬酸钠与有机还原剂硫脲组成。
6) cyclic imide hydrolase
环酰亚胺水解酶
1.
To explore the effect of C-terminal region residues on the molecular conformation and enzymatic activity of a novel cyclic imide hydrolase (CIH), several mutants of CIH, truncated or substituted at C-terminal residues, were designed on the basis of its gene sequence.
为了研究一个新环酰亚胺水解酶(CIH)C端区残基对酶分子构象及酶活性的影响,设计了C末端缺失1~4个氨基酸残基以及C-末端2个Lys替代为2个Glu或2个Leu的突变酶,以野生型酶基因重组质粒pE-cih293为模板,在相应引物存在下,通过PCR扩增获得突变的CIH基因片段。
2.
Cyclic imide hydrolase (CIH, EC.
环酰亚胺水解酶(Cyclic imide hydrolase，CIH，EC。
补充资料：水解聚丙烯酰胺
分子式：
CAS号：
性质：又称水解聚丙烯酰胺。白色细砂状粉末，溶于水。无毒，不腐蚀。可通过对聚丙烯酰胺进行水解或由丙烯酰胺单体与丙烯酸单体共聚两种方法制得。是最重要的阴离子高分子絮凝剂。主要用于处理以无机固体为主的中性悬浮液。在采矿、铸造和金属加工、造纸、水处理以及糖业加工中得到广泛应用。
CAS号：
性质：又称水解聚丙烯酰胺。白色细砂状粉末，溶于水。无毒，不腐蚀。可通过对聚丙烯酰胺进行水解或由丙烯酰胺单体与丙烯酸单体共聚两种方法制得。是最重要的阴离子高分子絮凝剂。主要用于处理以无机固体为主的中性悬浮液。在采矿、铸造和金属加工、造纸、水处理以及糖业加工中得到广泛应用。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条