Congratulations to Ying-Cen Guo on the successful defense of her Ph.D. thesis Author:wangqiang Date:May 18, 2008 Read times: Congratulations to Ying-Cen Guo on the successful defense of her Ph.D. thesis. PreNews: Congratulations to Yuan-Yuan Lai on the successful defense of her M.S. thesis NextNews: A New Entry to Cascade Organocatalysis: Reactions of Stable Ylides and Nitroolefins Sequentially Catalyzed by Thiourea and DMAP