Experiment on the transesterification of jatropha curcas oil with p - toluene sulphonic acid as catalyst was studied.实验研究了麻疯树油在对 甲苯 磺酸催化剂的作用下与甲醇发生转酯化反应生成脂肪酸甲酯(生物柴油)的情况.Isopropyl p - hydroxybenzoate was synthesized with t...
The complications of duodenal ulcer that require surgical management are hemorrhage , perforation, obstruction, and intractability.十二指肠溃疡需外科治疗的并发症是出血、穿孔 、 梗阻和顽固性.The resolution left behind hemosiderin from the hemorrhage...