Objective Population genetic analysis based on genetic markers harbors valuable forensic applications.In this regard,it is informative and imperative to explore Han groups as they are the largest population of China.I...Objective Population genetic analysis based on genetic markers harbors valuable forensic applications.In this regard,it is informative and imperative to explore Han groups as they are the largest population of China.In particular,there is a largely underrepresented amount of information from recent decades regarding the southeast costal Han Chinese.Therefore,the aim of this study is to investigate the available genetic characteristics of the Han population living in the Jinjiang,Fujian Province,Southeastern China.Methods We sampled 858 saliva samples and used the commercially available Microreader^(TM) Y Prime Plus ID System to identify population data of Y-short tandem repeat(STR)loci of this region.Results A total of 822 different haplotypes were observed.The overall haplotype diversity,discriminatory power and haplotype match probability were 0.9999,0.9999 and 0.0012,respectively.Conclusion Our results showed that the Jinjiang Han population was closely genetically related to Han groups of China.Overall,we identified a set of 37 Y-STRs that are highly polymorphic,and that can provide meaningful information in forensic practice and human genetic research.展开更多
采用水热法制备了Yb^(3+)/Tm^(3+)共掺Y2(Mo O _4)_3系列上转换发光粉。由于Tm^(3+)在980nm附近没有吸收,单掺Tm^(3+)的样品观测不到任何发射。引入Yb^(3+)后,借助Yb^(3+)对980nm红外光的吸收和Yb^(3+)到Tm^(3+)的能量传递,在可将光区...采用水热法制备了Yb^(3+)/Tm^(3+)共掺Y2(Mo O _4)_3系列上转换发光粉。由于Tm^(3+)在980nm附近没有吸收,单掺Tm^(3+)的样品观测不到任何发射。引入Yb^(3+)后,借助Yb^(3+)对980nm红外光的吸收和Yb^(3+)到Tm^(3+)的能量传递,在可将光区观察到源自Tm^(3+)的蓝光和红光。这两个波段的发射随着Yb^(3+)和Tm^(3+)的浓度增加均呈现先增强后减弱的变化规律,8%和0.5%对应Yb^(3+)和Tm^(3+)的最佳掺杂浓度。上转换发射的功率关系研究表明,蓝、红光均为三光子过程,因此二者的产生过程为连续三步Yb^(3+)到Tm^(3+)的能量传递。展开更多
Y染色体上的短串联重复序列(Y chromosome short tandem repeats,Y-STRs)在法医鉴定,尤其是混合斑中男性成分的检测分析和家系排查中具有重要作用。随着Y-STR试剂盒的不断推出和数据库的建立,国内外针对不同地区和群体的Y-STR多态性研...Y染色体上的短串联重复序列(Y chromosome short tandem repeats,Y-STRs)在法医鉴定,尤其是混合斑中男性成分的检测分析和家系排查中具有重要作用。随着Y-STR试剂盒的不断推出和数据库的建立,国内外针对不同地区和群体的Y-STR多态性研究日益增多,而有关铜川汉族Y-STR研究鲜有报道。基于此,采用Yfiler TM Platinum复合扩增试剂盒对陕西铜川汉族669名无关男性个体进行38个Y-STR基因座遗传多态性调查,并探索铜川地区汉族与其他群体之间的遗传关系。调查共检出657种单倍型,单倍型多样性和识别能力分别为0.999937345和0.9821。38个Y-STR基因座共检出428个等位基因,基因多样性值在0.1089(DYS645)~0.9699(DYS385)。群体遗传分析中,多维尺度分析(multi-dimensional scaling,MDS)和系统发育树分析结果显示铜川汉族与其他地区的汉族群体遗传距离更近。综上,研究结果中38个Y-STR基因座在铜川汉族群体中具有较高的遗传多态性,适合铜川地区法庭科学应用。展开更多
基于密度泛函理论的第一性原理的Vienna Ab initio Simulation Package(VASP)软件系统研究了Mg7TMH16(TM=Sc,Ti,V,Y,Zr,Nb)的晶体结构和电子性能.分析了结合能和形成焓,计算得到的结合能显示Mg7TiH16和Mg7NbH16的稳定性最强,形成焓的变...基于密度泛函理论的第一性原理的Vienna Ab initio Simulation Package(VASP)软件系统研究了Mg7TMH16(TM=Sc,Ti,V,Y,Zr,Nb)的晶体结构和电子性能.分析了结合能和形成焓,计算得到的结合能显示Mg7TiH16和Mg7NbH16的稳定性最强,形成焓的变化表明Mg7TMH16具有比MgH2更低的分解温度,电子态密度显示Mg7TMH16表现出明显的金属特性.展开更多
基金This study was supported by the Shaanxi Basic Research Program of Natural Science(No.2021JQ-392).
文摘Objective Population genetic analysis based on genetic markers harbors valuable forensic applications.In this regard,it is informative and imperative to explore Han groups as they are the largest population of China.In particular,there is a largely underrepresented amount of information from recent decades regarding the southeast costal Han Chinese.Therefore,the aim of this study is to investigate the available genetic characteristics of the Han population living in the Jinjiang,Fujian Province,Southeastern China.Methods We sampled 858 saliva samples and used the commercially available Microreader^(TM) Y Prime Plus ID System to identify population data of Y-short tandem repeat(STR)loci of this region.Results A total of 822 different haplotypes were observed.The overall haplotype diversity,discriminatory power and haplotype match probability were 0.9999,0.9999 and 0.0012,respectively.Conclusion Our results showed that the Jinjiang Han population was closely genetically related to Han groups of China.Overall,we identified a set of 37 Y-STRs that are highly polymorphic,and that can provide meaningful information in forensic practice and human genetic research.
文摘采用水热法制备了Yb^(3+)/Tm^(3+)共掺Y2(Mo O _4)_3系列上转换发光粉。由于Tm^(3+)在980nm附近没有吸收,单掺Tm^(3+)的样品观测不到任何发射。引入Yb^(3+)后,借助Yb^(3+)对980nm红外光的吸收和Yb^(3+)到Tm^(3+)的能量传递,在可将光区观察到源自Tm^(3+)的蓝光和红光。这两个波段的发射随着Yb^(3+)和Tm^(3+)的浓度增加均呈现先增强后减弱的变化规律,8%和0.5%对应Yb^(3+)和Tm^(3+)的最佳掺杂浓度。上转换发射的功率关系研究表明,蓝、红光均为三光子过程,因此二者的产生过程为连续三步Yb^(3+)到Tm^(3+)的能量传递。
文摘Y染色体上的短串联重复序列(Y chromosome short tandem repeats,Y-STRs)在法医鉴定,尤其是混合斑中男性成分的检测分析和家系排查中具有重要作用。随着Y-STR试剂盒的不断推出和数据库的建立,国内外针对不同地区和群体的Y-STR多态性研究日益增多,而有关铜川汉族Y-STR研究鲜有报道。基于此,采用Yfiler TM Platinum复合扩增试剂盒对陕西铜川汉族669名无关男性个体进行38个Y-STR基因座遗传多态性调查,并探索铜川地区汉族与其他群体之间的遗传关系。调查共检出657种单倍型,单倍型多样性和识别能力分别为0.999937345和0.9821。38个Y-STR基因座共检出428个等位基因,基因多样性值在0.1089(DYS645)~0.9699(DYS385)。群体遗传分析中,多维尺度分析(multi-dimensional scaling,MDS)和系统发育树分析结果显示铜川汉族与其他地区的汉族群体遗传距离更近。综上,研究结果中38个Y-STR基因座在铜川汉族群体中具有较高的遗传多态性,适合铜川地区法庭科学应用。
文摘基于密度泛函理论的第一性原理的Vienna Ab initio Simulation Package(VASP)软件系统研究了Mg7TMH16(TM=Sc,Ti,V,Y,Zr,Nb)的晶体结构和电子性能.分析了结合能和形成焓,计算得到的结合能显示Mg7TiH16和Mg7NbH16的稳定性最强,形成焓的变化表明Mg7TMH16具有比MgH2更低的分解温度,电子态密度显示Mg7TMH16表现出明显的金属特性.
