The essential oil of a liverworts plant from the Dragon-Snow Mountain in Yunnan province was analyzed via GC/MS.Sixty-three components were identified and nine among them were terpenes(that is dihydroactindiolide,2,2...The essential oil of a liverworts plant from the Dragon-Snow Mountain in Yunnan province was analyzed via GC/MS.Sixty-three components were identified and nine among them were terpenes(that is dihydroactindiolide,2,2′,5′-trimethylacrylophenone,pinane,6,10,14-trimethyl-2-pentadecanone,manool,4,4-dimethyl-androsta-5,7-diene,4,8,12,16-tetramethylheptadecan-4-olide,ethyl cholate and friedelin,respectively),six among them were aromatics(that is benzoic acid,2,6-di-tert-butyl-4-methylphenol,ethyl 2-hydroxyl-4-methoxy-6-methyl benzoate,methyl 2-hydroxyl-4-methoxy benzoate,methyl 2,4-dihydroxy-3,6-dimethyl b enzoate and diisobutyl phthalate,respectively),the others were fatty hydrocarbons or fatty acids or fatty acid esters.展开更多
Deacetylated chitosan solution mixed with inorganic flocculant has a good flocculation and decoloration efficiency towards the waste printing and dyeing water. Some factors influencing the process such as amount of ch...Deacetylated chitosan solution mixed with inorganic flocculant has a good flocculation and decoloration efficiency towards the waste printing and dyeing water. Some factors influencing the process such as amount of chitosan, deacetylation degree of chitosan, mixing time, setting time have been examined.展开更多
文摘The essential oil of a liverworts plant from the Dragon-Snow Mountain in Yunnan province was analyzed via GC/MS.Sixty-three components were identified and nine among them were terpenes(that is dihydroactindiolide,2,2′,5′-trimethylacrylophenone,pinane,6,10,14-trimethyl-2-pentadecanone,manool,4,4-dimethyl-androsta-5,7-diene,4,8,12,16-tetramethylheptadecan-4-olide,ethyl cholate and friedelin,respectively),six among them were aromatics(that is benzoic acid,2,6-di-tert-butyl-4-methylphenol,ethyl 2-hydroxyl-4-methoxy-6-methyl benzoate,methyl 2-hydroxyl-4-methoxy benzoate,methyl 2,4-dihydroxy-3,6-dimethyl b enzoate and diisobutyl phthalate,respectively),the others were fatty hydrocarbons or fatty acids or fatty acid esters.
文摘Deacetylated chitosan solution mixed with inorganic flocculant has a good flocculation and decoloration efficiency towards the waste printing and dyeing water. Some factors influencing the process such as amount of chitosan, deacetylation degree of chitosan, mixing time, setting time have been examined.
