After series of reforms including the introduction of the shareholding system, re-organization of capital, expansion of business fields and scale through cooperation or merge with other enterprises,Zhongda Group has n...After series of reforms including the introduction of the shareholding system, re-organization of capital, expansion of business fields and scale through cooperation or merge with other enterprises,Zhongda Group has now become a comprehensive enterprise group integrating import and export, foreign and domestic trade, ?and industry and serviceS.In the past five years stan-展开更多
Rural villagers hit hard by the 2008 earthquake start to live a better life The devastating 2008 Sichuan Province earthquake froze life for Luo Village’s 49-year-old
目的:为了评价杜仲再生皮质量,测定了杜仲三次再生皮中降压有效成分松脂醇二葡萄糖苷(P inores-inol d iglucoside,PDG)含量。方法:采用HPLC法,色谱柱为国产YWG C18柱(46×250 mm,10μm),以甲醇-水(30∶75)为流动相,流速1.0 m l/m ...目的:为了评价杜仲再生皮质量,测定了杜仲三次再生皮中降压有效成分松脂醇二葡萄糖苷(P inores-inol d iglucoside,PDG)含量。方法:采用HPLC法,色谱柱为国产YWG C18柱(46×250 mm,10μm),以甲醇-水(30∶75)为流动相,流速1.0 m l/m in,柱温为室温,检测波长为277 nm,进样量为10μl。结果:第一次剥皮后的再生皮中PDG含量略高于原生皮;第二次剥皮后的再生皮中PDG含量与剥皮前的一次再生皮相当;第三次剥皮后的再生皮中PDG含量明显低于剥皮前的二次再生皮。结论:为了保证药材质量,杜仲剥皮再生可进行两次,每次间隔时间不少于5年,第三次剥皮后的再生皮中PDG含量有待提高。展开更多
文摘After series of reforms including the introduction of the shareholding system, re-organization of capital, expansion of business fields and scale through cooperation or merge with other enterprises,Zhongda Group has now become a comprehensive enterprise group integrating import and export, foreign and domestic trade, ?and industry and serviceS.In the past five years stan-
文摘A year after being buried by a deadly mudslide, Zhugqu has risen again On August 6, a microblogger using the name Kayne posted, "It will be the first
文摘Rural villagers hit hard by the 2008 earthquake start to live a better life The devastating 2008 Sichuan Province earthquake froze life for Luo Village’s 49-year-old
文摘目的:为了评价杜仲再生皮质量,测定了杜仲三次再生皮中降压有效成分松脂醇二葡萄糖苷(P inores-inol d iglucoside,PDG)含量。方法:采用HPLC法,色谱柱为国产YWG C18柱(46×250 mm,10μm),以甲醇-水(30∶75)为流动相,流速1.0 m l/m in,柱温为室温,检测波长为277 nm,进样量为10μl。结果:第一次剥皮后的再生皮中PDG含量略高于原生皮;第二次剥皮后的再生皮中PDG含量与剥皮前的一次再生皮相当;第三次剥皮后的再生皮中PDG含量明显低于剥皮前的二次再生皮。结论:为了保证药材质量,杜仲剥皮再生可进行两次,每次间隔时间不少于5年,第三次剥皮后的再生皮中PDG含量有待提高。
