The northwest of Jiaodong peninsula is characterized by its greatest gold concentration area, enormous gold reserves and limited time interval （115±5Ma） of gold mineralization in China. Studies show that the ea...The northwest of Jiaodong peninsula is characterized by its greatest gold concentration area, enormous gold reserves and limited time interval （115±5Ma） of gold mineralization in China. Studies show that the east area of north China began its mantle plume evolution since the Yanshanian movement, and the Laiyang sub-mantle plume and its surrounding mantle branches such as those in Guojiadian, Aishan and Panshidian were formed in the mineralization concentration area of northwestern Jiaodong peninsula. With the development of mantle plume →sub-mantle plume → mantle branch→ favorable expending structures, the deep-derived hydrothermal fluid moved up to the favorable places, such as brittle-ductile or ductile-brittle shearing zones, the internal and external contact zones of intrusions, dense fracturing zones and the contact zones between dikes and countryrocks, and concentrated into deposits. Then the gold mineralization concentration zones that are centralized on mantle branches were formed. This study takes Guojiadian mantle branch as an example to discuss their metallogenetism and conclude the metallogenetic mode.展开更多
In recent years,some super hybrid rice varieties were bred with strong culms and large panicles,which are mainly contributed by the ipa1-2D locus.A gain-of-function allele of OsSPL14 is the ipa1-2D and it can greatly ...In recent years,some super hybrid rice varieties were bred with strong culms and large panicles,which are mainly contributed by the ipa1-2D locus.A gain-of-function allele of OsSPL14 is the ipa1-2D and it can greatly increase the panicle primary branch number.However,the key downstream genes mediating this trait variation are not fully explored.In this study,we developed high-quality near-isogenic lines(NILs)with a difference of only 30 kb chromosomal segment covering the ipa1-2D locus.Using the NILs,we explored the impact of ipa1-2D on five sequential stages of early inflorescence development,and found that the locus can greatly enhance the initiation of primary branch meristems.A transcriptomic analysis was performed to unveil the downstream molecular network of ipa1-2D,and 87 genes were found differentially expressed,many of which are involved in metabolism and catalysis processes.In addition,transgenic lines of overexpression and RNA interference were generated to shape different levels of OsSPL14.They were also used to validate the expression variation explored by transcriptome.Based on the gene annotation,twelve potential downstream targets of ipa1-2D were selected,and their expression variation was confirmed by qRT-PCR analysis both in NILs and transgenic lines.This research expands the molecular network underlying ipa1-2D and provides novel gene information which might be involved in the control of panicle branching.We discussed the potential function of identified genes and highlighted their values for future function exploration and breeding application.展开更多
在计算线性供给函数均衡模型(linear supply function equilibrium,LSFE)的过程中,通常需要多次求解各发电商(generation company,GenCo)个体所对应的双层优化问题。提出采用分支定界方法求解计及输电约束的线性供给函数均衡问题。采用...在计算线性供给函数均衡模型(linear supply function equilibrium,LSFE)的过程中,通常需要多次求解各发电商(generation company,GenCo)个体所对应的双层优化问题。提出采用分支定界方法求解计及输电约束的线性供给函数均衡问题。采用分支剪支操作处理互补松弛约束,仅需要计算少量的子优化问题,就可以达到遍历所有系统松弛子模式的效果。通过3节点系统和IEEE30节点系统2个算例可以看出,所提算法具有很好的搜索效率,为求解大规模电力市场均衡问题提供了一条有效途径。展开更多
基金financially supported by "Key Laboratory of Gold Mineralization Processes and Resource Utilization Subordinated to the Ministry of Land and Resources (2013001)", "Key Laboratory of Metallogenic Geological Process and Resources Utilization in Shandong Province (2013001)""the Scientific Base Research Program of China’s Typical Metallic Ore Deposits (200911007)"
文摘The northwest of Jiaodong peninsula is characterized by its greatest gold concentration area, enormous gold reserves and limited time interval （115±5Ma） of gold mineralization in China. Studies show that the east area of north China began its mantle plume evolution since the Yanshanian movement, and the Laiyang sub-mantle plume and its surrounding mantle branches such as those in Guojiadian, Aishan and Panshidian were formed in the mineralization concentration area of northwestern Jiaodong peninsula. With the development of mantle plume →sub-mantle plume → mantle branch→ favorable expending structures, the deep-derived hydrothermal fluid moved up to the favorable places, such as brittle-ductile or ductile-brittle shearing zones, the internal and external contact zones of intrusions, dense fracturing zones and the contact zones between dikes and countryrocks, and concentrated into deposits. Then the gold mineralization concentration zones that are centralized on mantle branches were formed. This study takes Guojiadian mantle branch as an example to discuss their metallogenetism and conclude the metallogenetic mode.
基金This work was supported by grants from the National Natural Science Foundation of China(31600990,31871217 and 32072037)the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(20KJA210002)+2 种基金Project of Special Funding for Crop Science Discipline Development(yzuxk202006)the open funds of the State Key Laboratory of Crop Genetics and Germplasm Enhancement(ZW202010)the Key Research and Development Program of Jiangsu Province(BE2018357).
文摘In recent years,some super hybrid rice varieties were bred with strong culms and large panicles,which are mainly contributed by the ipa1-2D locus.A gain-of-function allele of OsSPL14 is the ipa1-2D and it can greatly increase the panicle primary branch number.However,the key downstream genes mediating this trait variation are not fully explored.In this study,we developed high-quality near-isogenic lines(NILs)with a difference of only 30 kb chromosomal segment covering the ipa1-2D locus.Using the NILs,we explored the impact of ipa1-2D on five sequential stages of early inflorescence development,and found that the locus can greatly enhance the initiation of primary branch meristems.A transcriptomic analysis was performed to unveil the downstream molecular network of ipa1-2D,and 87 genes were found differentially expressed,many of which are involved in metabolism and catalysis processes.In addition,transgenic lines of overexpression and RNA interference were generated to shape different levels of OsSPL14.They were also used to validate the expression variation explored by transcriptome.Based on the gene annotation,twelve potential downstream targets of ipa1-2D were selected,and their expression variation was confirmed by qRT-PCR analysis both in NILs and transgenic lines.This research expands the molecular network underlying ipa1-2D and provides novel gene information which might be involved in the control of panicle branching.We discussed the potential function of identified genes and highlighted their values for future function exploration and breeding application.
文摘在计算线性供给函数均衡模型(linear supply function equilibrium,LSFE)的过程中,通常需要多次求解各发电商(generation company,GenCo)个体所对应的双层优化问题。提出采用分支定界方法求解计及输电约束的线性供给函数均衡问题。采用分支剪支操作处理互补松弛约束,仅需要计算少量的子优化问题,就可以达到遍历所有系统松弛子模式的效果。通过3节点系统和IEEE30节点系统2个算例可以看出,所提算法具有很好的搜索效率,为求解大规模电力市场均衡问题提供了一条有效途径。
