1) carboxylation
[英][kɑ:,bɔksə'leɪʃən] [美][kɑr,bɑksə'leʃən]
羧化
1.
Proper conditions for the esterification reaction of starch with maleic anhydride were presented after examining the effects of several factors such as reaction temperature, reaction time, the ratio of reactants and water content on the degree of carboxylation(DC) and the degree of substitution(DS) of the product.
研究了反应温度、反应时间、投料比和介质中水含量等因素对反应产物羧化度和取代度的影响,获得了顺丁烯二酸酐与淀粉进行酯化反应的较适宜条件为6g淀粉与6g顺丁烯二酸酐以6mL吡啶为催化剂,30℃下在7mL水和30mLN,N二甲基甲酰胺的混合介质中反应9h,制得羧化度及取代度分别为34。
2.
A new type of polymer supported β cyclodextrin is synthesized and its effect on catalytic carboxylation of phenol with carbon tetrachloride is investigated.
制取了一类新的聚苯乙烯（交联度２％）键联β－环糊精催化剂，研究了该催化剂对苯酚与四氯化碳的羧化反应。
2) Carboxymethylation
羧甲基化
1.
Exploratory studies on the carboxymethylation of cassava starch in water-miscible organic media;
水混合有机介质中木薯淀粉的羧甲基化研究
2.
Temperature-controlling microwave reaction apparatus and its application to carboxymethylation reaction of chitosan;
控温下微波反应装置用于壳聚糖羧甲基化反应
3) carboxylation efficiency
羧化效率
1.
The results were as follows:while water supply tension was increased,soil water content was decreased gradually;the fresh and dry weights of shoot were at the same trend and were the maximum at the point of 30hPa,which was in- creased at the beginning and decreased later;the apparent quantum yield and carboxylation efficiency of Spi.
结果表明：供水吸力增加,土壤重量含水量逐渐减少；菠菜地上部分鲜重和干重变化趋势一致,先增加后减少,在吸力30hPa时最大；叶片的表观量子产量(AQY)和羧化效率(CE)明显降低；总P和可溶性糖含量逐渐增加,总N含量逐渐减少,总K含量基本没变化；Zn和Mn含量先增加后减小,在吸力100hPa时最大,Fe含量基本不变化。
2.
The results showed that UV-B radiation made a decrease in light-saturated net photosynthesis rate (Ps), Ps at saturating Ci (Pm), apparent photosynthetic quantum yield (AQY), as well as carboxylation efficiency (CE).
用水培法研究了Ce(Ⅲ)对紫外辐射(UV-B,280￣320nm)胁迫下油菜幼苗光合量子效率与羧化效率变化对光合作用的影响。
3.
Under water stress,the shoot increased rate,the water use efficiency and carboxylation efficiency of two peach varieties were studied under pot cultivation condition.
以盆栽短枝型桃品种超红短枝和普通型品种早红珠为试材,研究了水分胁迫对不同生长类型桃树新梢增长率、叶片水分利用效率和羧化效率的影响。
4) carboxy methylation
羧甲基化
1.
Improvement of the preparation method for carboxy methylation of konjac glucomannan;
魔芋葡甘聚糖羧甲基化方法改进研究
2.
According to the molecular structural characteristics of konjac glucomannan(KGM),the improved preparation method for carboxy methylation of KGM was proposed,and the substitution of the carboxymethyl knojac glucomannan was 0.
对魔芋葡甘聚糖进行羧甲基化改性,制得醚化度为0。
3.
The preparation method for carboxy methylation of konjac glucomannan(KGM)was proposed in this paper according to molecular structural characteristics of KGM.
针对魔芋葡甘聚糖(KGM)分子结构特性进行羧甲基化改性,在乙醇介质中先混合醚化试剂,再进行碱化催化反应制备羧甲基魔芋葡甘聚糖(CMK)。
5) carboxylation
[英][kɑ:,bɔksə'leɪʃən] [美][kɑr,bɑksə'leʃən]
羧基化
1.
The extent of carboxylation was measured by the weight percent gain(WPG).
研究发现,采用丁二酸酐直接处理蔗渣可以将羧基引入蔗渣中,羧基化的程度随着反应时间、酸酐用量、反应温度的提高而提高。
2.
Maleic anhydride and phthalic anhydride were used to carboxylate unprocessed sugarcane bagasse after ultrasonic radiation,and the effects of ultrasonic radiation time,the reaction temperature and the anhydride dosage on the carboxylation yield were investigated.
采用马来酸酐和邻苯二甲酸酐直接处理未经成分分离的超声预处理后的蔗渣,将羧基引入蔗渣中,考察了超声波预处理时间、反应温度、酸酐用量对羧基化产率的影响,并与经丁二酸酐处理的蔗渣进行了比较。
3.
Graft polymerization of acrylic acid (AA) was used to fabricate surface carboxylation poly(L-lactide) (PLLA) film by low-temperature plasma to develop its cell affinity and the growth behavior of the L929 fibroblast was investigated.
用低温等离子体接枝聚合丙烯酸获得表面羧基化的PLLA膜并对其表面性能进行表征。
6) carbonization-decarboxylation
碳化脱羧
1.
Adopting carbonization-decarboxylation and sulfuric acid absorption technology,nicotine can be extracted from tobacco of inferior quality.
在密闭容器中,控制温度540～550℃,使低、次烟叶碳化脱羧。
补充资料：胺前体摄取和脱羧化细胞
胺前体摄取和脱羧化细胞
amine precursor uptake and decarboxylation cell
简称“APUD细胞”。指在生物化学和细胞化学上具有以下共同特性的细胞，即能够摄取胺的前身物质，脱去其羧基，并转为具有活性的胺或肽。它所产生的活性胺类物质和活性肽类物质能够发挥激素或神经介质的作用。APUD细胞不仅存在于胃、肠、胰，下丘脑、脑垂体、甲状腺、动脉体、胸腺、肺、肾上腺髓质、交感神经节等部位也同样有APUD细胞，构成APUD系统。
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