R is tetramethylene, pentamethylene, or hexamethylene. r为四甲撑、五甲撑或六甲撑。
The comparison between three stationary phases of different hydrophobicity, such as polyethylene glycol, tetramethylene glycol and phenyl, was made. 对还原变性Lys在3种疏水性不同的色谱柱上的复性情况进行了考察
And two new segmented poly(urethaneureas) were prepared from poly(tetramethylene glycol)(PTMG) or polyadipate of 1,4 butanediol(PBA), MDI and Urea(as chain extender). 通过对聚氨酯脲及其硬段模型化合物的结构与性能的研究，发现这种体系有高相分离程度、高氢键密度的特点，并暗示了三维氢键网络结构的存在。
Methods The cure for 29 patients who were diagnosed Tetramethylene Poisoning was retrospectively analyzed, the suitable project of diagnosis and treatment were studied out. 方法对29例确诊为毒鼠强中毒的病人救治进行回顾性分析,拟定合适的诊治方案。
The polyester type and polyether type waterborne polyurethane were synthesized by isophorone diisocyanate(IPDI),toluene diisocyanate(TDI),poly(1,4-butylene adipate) glycol(PBA),poly(tetramethylene glycol)(PTMEG),DEG,BDO,NPG and so on. 以异佛尔酮二异氰酸酯、甲苯二异氰酸酯、聚酯二醇、聚醚二醇、二甘醇、1,4丁-二醇和新戊二醇为主要原料,合成了聚酯型和聚醚型的水性聚氨酯。
Objective:To observe clinical symptom of acute tetramethylene disulphotetramine(TETS) poisoning and to evaluate therapeutic effects of sodium dimercaptopropane sulfonate on TETS poisoning. 目的:观察急性毒鼠强中毒的临床表现,评价二巯丙磺钠对毒鼠强中毒的疗效。
