The yeast strain 12y - 5 was identified at the species level using two yeast taxonomy systems published by . j . w . kreger - van rij ( 1984 ) [ 24 ] and j . a . barnett ( 1983 ) . [ 19 ] in addition , the ability to assimilate several compounds as main sources of carbon and nitrogen was evaluated at the 500ml shake - flask and 3 . 7l kfl bioreactor scales . effects of ph , temperature , concentration of dissolved oxygen and utilizable sugar on the growth rate of cells and the rate of the conversion of substrate into biomass were studied 进而用正交试验法对该酵母生长的培养基配方及影响生长的重要理化因素进行了较为深入的研究,在此基础上对影响生长的重要理化因素进行了宽范围的测验:并以摇瓶最佳的培养条件为基础,在3 . 7升kfl -生物反应器上进行了放大试验。
Chapter 4 discussed barnett ' s realistic evaluations of the development of china and his criticism of the arguments mentioned above such as chinese westernization , china collapse and china retrogression . this chapter also covered barnett ' s efforts to maintain the sino - us relations stable whenever crises occurred . as a conclusion , the last chapter summarized barnett ' s views of china and research models , and his academic thoughts and their enlightenment as well 本文第四章论述了鲍大可在80和90年代对中国发展进程的现实评估和他对上述“中国西化论” 、 “中国崩溃论” 、 “中国倒退论”等种种论调的批评,另外也论述了他在中美关系出现危机的每一关键时刻,为维持中美关系的稳定和健康发展而进行的种种努力。