The continuous rise of consumer price index (CPI) has increased concern over China's macroeconomic situation. Will inflation have a disastrous impact on the Chinese economy? What risks are brewing behind the boomi...The continuous rise of consumer price index (CPI) has increased concern over China's macroeconomic situation. Will inflation have a disastrous impact on the Chinese economy? What risks are brewing behind the booming real estate and stock markets? Have bubbles already occurred in the Chinese economy? From his office in Guohong Building, Beijing, Dr. Fan Gang gave his views on these questions in an exclusive interview with China Economist.展开更多
D-Glucose, L-arabinose, D-mannose, D-xylose, and cellobiose are saccharification products of lignocellulose and important carbon sources for industrial fermentation. The fermentation efficiency with each of the five s...D-Glucose, L-arabinose, D-mannose, D-xylose, and cellobiose are saccharification products of lignocellulose and important carbon sources for industrial fermentation. The fermentation efficiency with each of the five sugars and the mixture of the two most dominant sugars, D-glucose and D-xylose, was evaluated for acetone- butanol-ethanol （ABE） fermentation by Clostridium acetobutylicum ATCC 824. The utilization efficacy of the five reducing sugars was in the order of D-glucose, L-arabinose, D-mannose, o-xylose and cellobiose, o-Xylose, the second most abundant component in lignocellulosic hydrolysate, was used in the fermentation either as sole carbon source or mixed with glucose. The results indicated that maintaining pH at 4.8, the optimal pH value for solventogenesis, could increase D-xylose consumption when it was the sole carbon source. Different media con- taining D-glucose and D-xylose at different ratios （1：2, 1：5, 1.5：1, 2：1 ） were then attempted for the ABE fermenta- tion. When pH was at 4.8 and xylose concentration was five times that of glucose, a 256.9% increase in xylose utilization and 263.7% increase in solvent production were obtained compared to those without pH control. These results demonstrate a possible approach combining optimized pH control and D-glucose and D-xylose ratio to increase the fermentation efficiency of lignocellulosic hydrolysate.展开更多
This invited paper reviews recent initiatives in teaching about randomized field trials at the graduate level in education research. Reports in a book on randomized trials by Mosteller and Boruch are used as a benchma...This invited paper reviews recent initiatives in teaching about randomized field trials at the graduate level in education research. Reports in a book on randomized trials by Mosteller and Boruch are used as a benchmark. The initiatives have been driven heavily by recent governmental emphasis on ＂evidence based policy＂ in education, criminology, welfare and other sectors. This policy has been backed, in the US at least, by substantial investments in mounting randomized controlled trials to evaluate curriculum packages and programs in grades K-12, crime prevention programs, welfare, and other work. Accelerated growth in randomized trials has entailed cross discipline pre-doctoral and post-doctoral institutes and graduate education programs aimed at enhancing the quality in trial design, execution, and analysis of results. Specific illustrations of graduate education in this area of statistics are taken mainly from experience at the University of Pennsylvania＇s Graduate School of Education and selected other institutions.展开更多
Ma Xiaoying, Assyriology, Ph.D., 1994.12 "Women’s Social Status in Old Babylonia Reflected in Marital Property" (Supervisors: Professors Lin Zhichun, Thomas Lee, Tova Meltzer, Wu Yuhong) Wang Liying, Cla...Ma Xiaoying, Assyriology, Ph.D., 1994.12 "Women’s Social Status in Old Babylonia Reflected in Marital Property" (Supervisors: Professors Lin Zhichun, Thomas Lee, Tova Meltzer, Wu Yuhong) Wang Liying, Classics, Ph.D., 1995.6 "Sallust’s Bellum Catilinae" (Supervisors: Porfessors Wang Dunshu, P.Ruth Taylor-Briggs, F. Ahlheid, Lin Zhichun)展开更多
Assyriology QI Xiao, MA The Reconstruction of the Archive of Ur-Kununna, the Scribe of Animal Center of Ur-III Dynasty (ulgi 43 ii - Ibbi-Sin 2 iv) (Supervisor: Wu Yuhong)
文摘The continuous rise of consumer price index (CPI) has increased concern over China's macroeconomic situation. Will inflation have a disastrous impact on the Chinese economy? What risks are brewing behind the booming real estate and stock markets? Have bubbles already occurred in the Chinese economy? From his office in Guohong Building, Beijing, Dr. Fan Gang gave his views on these questions in an exclusive interview with China Economist.
基金Supported by the National Natural Science Foundation of China(20306026 and 21376215)the National High Technology Research and Development Program of China(2012AA022302)
文摘D-Glucose, L-arabinose, D-mannose, D-xylose, and cellobiose are saccharification products of lignocellulose and important carbon sources for industrial fermentation. The fermentation efficiency with each of the five sugars and the mixture of the two most dominant sugars, D-glucose and D-xylose, was evaluated for acetone- butanol-ethanol （ABE） fermentation by Clostridium acetobutylicum ATCC 824. The utilization efficacy of the five reducing sugars was in the order of D-glucose, L-arabinose, D-mannose, o-xylose and cellobiose, o-Xylose, the second most abundant component in lignocellulosic hydrolysate, was used in the fermentation either as sole carbon source or mixed with glucose. The results indicated that maintaining pH at 4.8, the optimal pH value for solventogenesis, could increase D-xylose consumption when it was the sole carbon source. Different media con- taining D-glucose and D-xylose at different ratios （1：2, 1：5, 1.5：1, 2：1 ） were then attempted for the ABE fermenta- tion. When pH was at 4.8 and xylose concentration was five times that of glucose, a 256.9% increase in xylose utilization and 263.7% increase in solvent production were obtained compared to those without pH control. These results demonstrate a possible approach combining optimized pH control and D-glucose and D-xylose ratio to increase the fermentation efficiency of lignocellulosic hydrolysate.
文摘This invited paper reviews recent initiatives in teaching about randomized field trials at the graduate level in education research. Reports in a book on randomized trials by Mosteller and Boruch are used as a benchmark. The initiatives have been driven heavily by recent governmental emphasis on ＂evidence based policy＂ in education, criminology, welfare and other sectors. This policy has been backed, in the US at least, by substantial investments in mounting randomized controlled trials to evaluate curriculum packages and programs in grades K-12, crime prevention programs, welfare, and other work. Accelerated growth in randomized trials has entailed cross discipline pre-doctoral and post-doctoral institutes and graduate education programs aimed at enhancing the quality in trial design, execution, and analysis of results. Specific illustrations of graduate education in this area of statistics are taken mainly from experience at the University of Pennsylvania＇s Graduate School of Education and selected other institutions.
文摘Ma Xiaoying, Assyriology, Ph.D., 1994.12 "Women’s Social Status in Old Babylonia Reflected in Marital Property" (Supervisors: Professors Lin Zhichun, Thomas Lee, Tova Meltzer, Wu Yuhong) Wang Liying, Classics, Ph.D., 1995.6 "Sallust’s Bellum Catilinae" (Supervisors: Porfessors Wang Dunshu, P.Ruth Taylor-Briggs, F. Ahlheid, Lin Zhichun)
文摘Assyriology QI Xiao, MA The Reconstruction of the Archive of Ur-Kununna, the Scribe of Animal Center of Ur-III Dynasty (ulgi 43 ii - Ibbi-Sin 2 iv) (Supervisor: Wu Yuhong)
