目的探讨25例B亚型/AB亚型标本的分子生物学机制。方法应用PCR-SSP对血型血清学确认为B抗原减弱的标本进行ABO*B基因检测或应用Sanger一代测序技术对ABO基因的第6-7外显子或第1-7外显子测序;对最终无法定型的标本进一步用PacBio:SMRT三...目的探讨25例B亚型/AB亚型标本的分子生物学机制。方法应用PCR-SSP对血型血清学确认为B抗原减弱的标本进行ABO*B基因检测或应用Sanger一代测序技术对ABO基因的第6-7外显子或第1-7外显子测序;对最终无法定型的标本进一步用PacBio:SMRT三代测序技术进行检测。结果25例B亚型/AB亚型标本均经过基因序列分析,共发现7种已知的ABO*B等位基因,分别为ABO*BW.27(3/25,12.00%)、ABO*BW.03(5/25,20.00%)、ABO*B3.03(2/25,8.00%)、ABO*BEL.03(1/25,4.00%)、ABO*BW.07(7/25,28.00%)、ABO*B3.05(1/25,4.00%)、ABO*BW.12(1/25,4.00%);5种未知的ABO*B等位基因,其中已发表但未被ISBT收录的2例,分别为ABO*B.01 with c.28+5885C>T、ABO*B.01 with c.28+5875C>T,另外3例为本研究首次报道的ABO*B新等位基因,分别为ABO*B.01(with c.3G>C)、ABO*B.01(with c.28+5862A>G)、ABO*B.01(with c.204-3C>G),均已被Genebank收录并公布。结论研究阐释了25例B亚型/AB亚型的分子生物学机制,并发现了5例ABO*B新等位基因。该研究丰富了ABO*B等位基因基因库,为更好地制定输血策略提供了理论依据。展开更多
The atomic structure of amorphous alloys plays a crucial role in determining both their glass-forming ability and magnetic properties. In this study, we investigate the influence of adding the Y element on the glass-f...The atomic structure of amorphous alloys plays a crucial role in determining both their glass-forming ability and magnetic properties. In this study, we investigate the influence of adding the Y element on the glass-forming ability and magnetic properties of Fe_(86-x)Y_xB_7C_7(x = 0, 5, 10 at.%) amorphous alloys via both experiments and ab initio molecular dynamics simulations. Furthermore, we explore the correlation between local atomic structures and properties. Our results demonstrate that an increased Y content in the alloys leads to a higher proportion of icosahedral clusters, which can potentially enhance both glass-forming ability and thermal stability. These findings have been experimentally validated. The analysis of the electron energy density and magnetic moment of the alloy reveals that the addition of Y leads to hybridization between Y-4d and Fe-3d orbitals, resulting in a reduction in ferromagnetic coupling between Fe atoms. This subsequently reduces the magnetic moment of Fe atoms as well as the total magnetic moment of the system, which is consistent with experimental results. The results could help understand the relationship between atomic structure and magnetic property,and providing valuable insights for enhancing the performance of metallic glasses in industrial applications.展开更多
文摘目的探讨25例B亚型/AB亚型标本的分子生物学机制。方法应用PCR-SSP对血型血清学确认为B抗原减弱的标本进行ABO*B基因检测或应用Sanger一代测序技术对ABO基因的第6-7外显子或第1-7外显子测序;对最终无法定型的标本进一步用PacBio:SMRT三代测序技术进行检测。结果25例B亚型/AB亚型标本均经过基因序列分析,共发现7种已知的ABO*B等位基因,分别为ABO*BW.27(3/25,12.00%)、ABO*BW.03(5/25,20.00%)、ABO*B3.03(2/25,8.00%)、ABO*BEL.03(1/25,4.00%)、ABO*BW.07(7/25,28.00%)、ABO*B3.05(1/25,4.00%)、ABO*BW.12(1/25,4.00%);5种未知的ABO*B等位基因,其中已发表但未被ISBT收录的2例,分别为ABO*B.01 with c.28+5885C>T、ABO*B.01 with c.28+5875C>T,另外3例为本研究首次报道的ABO*B新等位基因,分别为ABO*B.01(with c.3G>C)、ABO*B.01(with c.28+5862A>G)、ABO*B.01(with c.204-3C>G),均已被Genebank收录并公布。结论研究阐释了25例B亚型/AB亚型的分子生物学机制,并发现了5例ABO*B新等位基因。该研究丰富了ABO*B等位基因基因库,为更好地制定输血策略提供了理论依据。
基金Project supported by the National Key Research and Development Program of China(Grant No.2021YFB2401703)the National Natural Science Foundation of China(Grant Nos.52177005 and 51871234)the China Postdoctoral Science Foundation(Grant No.2022T150691)。
文摘The atomic structure of amorphous alloys plays a crucial role in determining both their glass-forming ability and magnetic properties. In this study, we investigate the influence of adding the Y element on the glass-forming ability and magnetic properties of Fe_(86-x)Y_xB_7C_7(x = 0, 5, 10 at.%) amorphous alloys via both experiments and ab initio molecular dynamics simulations. Furthermore, we explore the correlation between local atomic structures and properties. Our results demonstrate that an increased Y content in the alloys leads to a higher proportion of icosahedral clusters, which can potentially enhance both glass-forming ability and thermal stability. These findings have been experimentally validated. The analysis of the electron energy density and magnetic moment of the alloy reveals that the addition of Y leads to hybridization between Y-4d and Fe-3d orbitals, resulting in a reduction in ferromagnetic coupling between Fe atoms. This subsequently reduces the magnetic moment of Fe atoms as well as the total magnetic moment of the system, which is consistent with experimental results. The results could help understand the relationship between atomic structure and magnetic property,and providing valuable insights for enhancing the performance of metallic glasses in industrial applications.
