甾族的 的英文怎麼說
中文拼音 [zāizúde]
甾族的
英文
steroidal-
His field of expertise was steroids.
他的專業領域是甾族化合物。This result is obtained mainly by consideration of the four-ring molecules derived from steroids.
這個結果主要是通過從甾族化合物中取得的四環分子得到的。A super acylation catalyst, 4 - dimethylamino pyridine ( dmap ), was prepared and used to synthesize cholesteryl ester compounds. four kinds of cholesteryl ester compounds such as cholesteryl p - alkoxyl benzoate, cholesteryl dicarboxylate, cholesteryl lumequeic ester and coattail - like cholesteryl ester were synthesized by acylation method and super acylation catalyst method. chemical structures and liquid crystal behaviors of the synthesized samples have been characterized by using element analysis, ftir, dsc and polarized microscopy with a hot stage
本文合成了高效酰化催化劑4 -二甲基氨基吡啶（ 4 - dimethylaminopyridine ， dmap ） ，採用酰氯化法和高效酰化催化劑法分別合成了對烷氧基苯甲酸膽甾醇酯、對稱脂族二羧酸膽甾醇酯、烯酸膽甾醇酯及燕尾型膽甾醇酯四類膽甾醇酯衍生物，並進行了化學結構和液晶性能的表徵。Objective : to extract and determine the compositions and relative amount of steride in rhizoma phragmitis
摘要目的：提取並測定蘆根中甾族化合物的成分和相對含量。The polarographic catalytic waves of organic compounds, such as protein, flavone, steroide, quinine, - unsaturated carbonyl compound, nitrogen - containing substances and charged surfactants, and their application are briefly introduced
簡要介紹蛋白質、黃酮類化合物、甾族類化合物、醌類化合物、 ，不飽和羰基化合物、含氮化合物和荷電表面活性劑等不同種類有機化合物的極譜催化波及其應用。Phenyl group introducing to cholesteryl ester molecules can enhance the phase transition temperatures of the liquid crystals and their stability. an increase in the chain length for cholesteryl dicarboxylate samples reduced stability of liquid crystal phases. while coattail - like structures on the ester group of the molecules have an adverse effect to form cholesteryl liquid crystal phase
化學結構對液晶性的影響表現為：分子中引入苯環剛性結構可以提高液晶的相變溫度和穩定性；脂族二羧酸膽甾醇酯中脂肪鏈的長度增加會降低液晶的穩定性；而末端含有燕尾結構則對液晶態的形成產生不利影響。分享友人