分蘖性状不仅与玉米的进化密切相关，对玉米育种也具有重要意义。利用具有共同系谱来源的8个分蘖自交系与3个不分蘖自交系，提取 DNA 并分别等量混合，形成分蘖与不分蘖基因池；采用混合分离分析策略（bulked segregation analysis ，BS...分蘖性状不仅与玉米的进化密切相关，对玉米育种也具有重要意义。利用具有共同系谱来源的8个分蘖自交系与3个不分蘖自交系，提取 DNA 并分别等量混合，形成分蘖与不分蘖基因池；采用混合分离分析策略（bulked segregation analysis ，BSA），利用覆盖玉米全基因组的1013个 SSR 标记对2个基因池进行多态性筛选，共获得了16个与玉米分蘖相关联的位点。这16个位点分布在玉米7条染色体上，其中包括2，4，5，6，7，8和9号染色体。参照IBM22008高密度整合遗传连锁图谱，这16个位点分别位于11个 Bin 区段中，基因功能注释显示这些片段中基因的数量在7～37个之间。这些研究结果为克隆控制玉米分蘖基因奠定了良好的基础。展开更多
The energy-conserving performance of dividing wall column(DWC) is discussed in this paper. The heat transfer through the dividing wall is considered and the results are compared with that of common heat insulation div...The energy-conserving performance of dividing wall column(DWC) is discussed in this paper. The heat transfer through the dividing wall is considered and the results are compared with that of common heat insulation dividing wall column(HIDWC). Based on the thermodynamic analysis of heat transfer dividing wall column(HTDWC) and HIDWC, both computer simulation and experiments are employed to analyze the energyconserving situation. Mixtures of n-hexane, n-heptane and n-octane are chosen as the example for separation.The results show that the energy consumption of HTDWC is 50.3% less than that of conventional distillation column, while it is 46.4% less than that of HIDWC. It indicates that DWC is efficient on separating threecomponent mixtures and HTDWC can save more energy than HIDWC. Thus it is necessary to consider the heat transfer while applying DWC to industry.展开更多
文摘分蘖性状不仅与玉米的进化密切相关，对玉米育种也具有重要意义。利用具有共同系谱来源的8个分蘖自交系与3个不分蘖自交系，提取 DNA 并分别等量混合，形成分蘖与不分蘖基因池；采用混合分离分析策略（bulked segregation analysis ，BSA），利用覆盖玉米全基因组的1013个 SSR 标记对2个基因池进行多态性筛选，共获得了16个与玉米分蘖相关联的位点。这16个位点分布在玉米7条染色体上，其中包括2，4，5，6，7，8和9号染色体。参照IBM22008高密度整合遗传连锁图谱，这16个位点分别位于11个 Bin 区段中，基因功能注释显示这些片段中基因的数量在7～37个之间。这些研究结果为克隆控制玉米分蘖基因奠定了良好的基础。
基金Supported by the National Natural Science Foundation of China(21306036)Science&Technology Research Fund Project for Outstanding Youth in Colleges and Universities of Hebei province(Y2012040)the Joint Specialized Research Fund for the Doctoral Program of Higher Education of China(20131317120014)
文摘The energy-conserving performance of dividing wall column(DWC) is discussed in this paper. The heat transfer through the dividing wall is considered and the results are compared with that of common heat insulation dividing wall column(HIDWC). Based on the thermodynamic analysis of heat transfer dividing wall column(HTDWC) and HIDWC, both computer simulation and experiments are employed to analyze the energyconserving situation. Mixtures of n-hexane, n-heptane and n-octane are chosen as the example for separation.The results show that the energy consumption of HTDWC is 50.3% less than that of conventional distillation column, while it is 46.4% less than that of HIDWC. It indicates that DWC is efficient on separating threecomponent mixtures and HTDWC can save more energy than HIDWC. Thus it is necessary to consider the heat transfer while applying DWC to industry.
