Founded in Yuan Dynasty,formed and perfected from Ming and Qing Dynasties to modern times,the Central Axis of Beijing has a history of more than 750 years.It is the longest and best be-preserved traditional capital ax...Founded in Yuan Dynasty,formed and perfected from Ming and Qing Dynasties to modern times,the Central Axis of Beijing has a history of more than 750 years.It is the longest and best be-preserved traditional capital axis in China.It is composed of a series of buildings,historical landmarks,historical roads,bridges and ruins,forming an orderly urban space complex.展开更多
[N-（Propionic acid）] terephthalal acyl dihydrazone（H4L） was synthesized and characterized by element analysis, IR, 1H NMR and MS. The theoretical studies on H4L were carried out at HF/6-31＋G（d） and B3LYP/ 6-3 I...[N-（Propionic acid）] terephthalal acyl dihydrazone（H4L） was synthesized and characterized by element analysis, IR, 1H NMR and MS. The theoretical studies on H4L were carried out at HF/6-31＋G（d） and B3LYP/ 6-3 I＋G（oD levels. The main decomposition stage of it was studied with IR track. The kinetic parameters[the apparent activation energy（Ea） and pre-exponential constant（A） of the first and second stages of decomposition reaction] were obtained by Kissinger and Ozawa＇s methods. Furthermore, the antimicrobial activity of HaL against wheat rust was investigated by spore sprout method.展开更多
文摘Founded in Yuan Dynasty,formed and perfected from Ming and Qing Dynasties to modern times,the Central Axis of Beijing has a history of more than 750 years.It is the longest and best be-preserved traditional capital axis in China.It is composed of a series of buildings,historical landmarks,historical roads,bridges and ruins,forming an orderly urban space complex.
基金Supported by the Shaanxi Provincial Project of the Technology and Plan,China(No.2007K02-11)the Project of Education Committee of Shaanxi Province,China(No.2011JG04)the Shaanxi Provincial Science and Technology Project,China(No.08ZDKG-268)
文摘[N-（Propionic acid）] terephthalal acyl dihydrazone（H4L） was synthesized and characterized by element analysis, IR, 1H NMR and MS. The theoretical studies on H4L were carried out at HF/6-31＋G（d） and B3LYP/ 6-3 I＋G（oD levels. The main decomposition stage of it was studied with IR track. The kinetic parameters[the apparent activation energy（Ea） and pre-exponential constant（A） of the first and second stages of decomposition reaction] were obtained by Kissinger and Ozawa＇s methods. Furthermore, the antimicrobial activity of HaL against wheat rust was investigated by spore sprout method.
