The short-range order structures of Fe_xGe_(1-x) amorphous thin films,(x=8.7,19.1 and 28.5%)have been studied by means of X-ray absorption spectrum.The nearest neighbors around a Ge or an Fe atom are constituted by tw...The short-range order structures of Fe_xGe_(1-x) amorphous thin films,(x=8.7,19.1 and 28.5%)have been studied by means of X-ray absorption spectrum.The nearest neighbors around a Ge or an Fe atom are constituted by two coordinate sub-shells with a very short dis- tance,In two films with lower Fe content,structural parameters of the nearest neighbors around a Ge atom are very near to that in amorphous germanium,and the positions of Fe at- oms are randomly substitutional.But when x=28.5%,some great changes occur on the short-range order structure of a-Fe_xGe_(1-x) film:its structure deviates from continuous ran- dora network and tends toward dense random packing of atoms.Meanwhile,there is a strong- er interaction between near neighboring Fe-Ge atoms in a-Fe_xGe_(1-x) films.展开更多
Superconducting (SC) in equal molar NbTaTiZr-based high-entropy alloys (HEAs) that were added with Fe, Ge, Hf, Si, and/or V was observed. According to investigation on crystal structure, composition, and the relations...Superconducting (SC) in equal molar NbTaTiZr-based high-entropy alloys (HEAs) that were added with Fe, Ge, Hf, Si, and/or V was observed. According to investigation on crystal structure, composition, and the relationship between critical temperature and e/a ratio, as indicated in Matthias’ empirical rule, the main superconducting phase was that enriched with Nb and Ta. The coherence length (ξ) that was calculated from the carrier density reveals that ξvalue has the same order of magnitude of several hundreds of Angstroms as those binary Nb-Ti and Nb-Zr alloys showed.展开更多
Background:The traditional Sox10 ^(Dom/+)mouse breeding strategy is costly and timeconsuming,so this study aims to optimize the breeding method and improve the scientific research efficiency.Methods:We select the offs...Background:The traditional Sox10 ^(Dom/+)mouse breeding strategy is costly and timeconsuming,so this study aims to optimize the breeding method and improve the scientific research efficiency.Methods:We select the offspring from mating B6C3Fe Sox10 ^(Dom/+)male mice with C57BL/6J female mice,and name the progeny B6C3Fe-g.Further,conduct separate self-breeding for both the B6C3Fe and B6C3Fe-g strains,adhering to the principle of pairing mutants with non-mutants.By comparing the number of offspring,survival rates,and the phenotype of aganglionosis in the colon,a comprehensive evaluation of their breeding capacity and phenotypic stability is conducted.Results:Sanger sequencing results show that the mutation sites of B6C3Fe and B6C3Fe-g mice are consistent.After fluorescent staining of intestinal nerves,it was found that the heterozygous mice of the two strains had neuronal deletion in the distal colon,and this pathological phenotype was consistent with the pathological features of the diseased colon of Hirschsprung disease(HSCR).However,compared with the B6C3Fe strain,the B6C3Fe-g strain has a higher number of offspring and greater survival rates.Conclusions:The breeding strategy of the B6C3Fe-g strain ensures genetic and phenotypic stability,while improving reproductive efficiency,and is an ideal scheme for breeding Sox10 ^(Dom/+)mice.展开更多
Magnetic structure of Pr6Fe13Ge at room temperature has been investigated by magnetic measurement, Mossbauer effect and neutron diffraction. Magnetic atoms are closely packed up and down the mirror planes at z = 0 and...Magnetic structure of Pr6Fe13Ge at room temperature has been investigated by magnetic measurement, Mossbauer effect and neutron diffraction. Magnetic atoms are closely packed up and down the mirror planes at z = 0 and 1/2 and separated by the non-magnetic atoms located on the planes at z= 1/4 and 3/4, which constructs an M/NM/M sandwich structure (M: magnetic, NM: non-magnetic). The intralayer magnetic moments couple ferromagnetically and are out of ab plane at a small angle so as to form a component along c-axis. The interlayer coupling is antiferromagnetic for the ab component while ferromagnetic for the c component.展开更多
文摘The short-range order structures of Fe_xGe_(1-x) amorphous thin films,(x=8.7,19.1 and 28.5%)have been studied by means of X-ray absorption spectrum.The nearest neighbors around a Ge or an Fe atom are constituted by two coordinate sub-shells with a very short dis- tance,In two films with lower Fe content,structural parameters of the nearest neighbors around a Ge atom are very near to that in amorphous germanium,and the positions of Fe at- oms are randomly substitutional.But when x=28.5%,some great changes occur on the short-range order structure of a-Fe_xGe_(1-x) film:its structure deviates from continuous ran- dora network and tends toward dense random packing of atoms.Meanwhile,there is a strong- er interaction between near neighboring Fe-Ge atoms in a-Fe_xGe_(1-x) films.
文摘Superconducting (SC) in equal molar NbTaTiZr-based high-entropy alloys (HEAs) that were added with Fe, Ge, Hf, Si, and/or V was observed. According to investigation on crystal structure, composition, and the relationship between critical temperature and e/a ratio, as indicated in Matthias’ empirical rule, the main superconducting phase was that enriched with Nb and Ta. The coherence length (ξ) that was calculated from the carrier density reveals that ξvalue has the same order of magnitude of several hundreds of Angstroms as those binary Nb-Ti and Nb-Zr alloys showed.
基金Basic and Applied Basic Research Foundation of Guangxi Province of China,Grant/Award Number:2025GXNSFBA069072National Natural Science Foundation of China,Grant/Award Number:81970450,82070528,82170528,82200561,82201893,82301955,82370526 and 82560108+2 种基金Medical Scientific Research Foundation of Guangdong Province of China,Grant/Award Number:A2024374The Guangdong Basic and Applied Basic Research Foundation,Grant/Award Number:2024A03J1171,2024A03J1238 and 2024A1515013190Science and Technology Projects in Guangzhou,Grant/Award Number:202201020006。
文摘Background:The traditional Sox10 ^(Dom/+)mouse breeding strategy is costly and timeconsuming,so this study aims to optimize the breeding method and improve the scientific research efficiency.Methods:We select the offspring from mating B6C3Fe Sox10 ^(Dom/+)male mice with C57BL/6J female mice,and name the progeny B6C3Fe-g.Further,conduct separate self-breeding for both the B6C3Fe and B6C3Fe-g strains,adhering to the principle of pairing mutants with non-mutants.By comparing the number of offspring,survival rates,and the phenotype of aganglionosis in the colon,a comprehensive evaluation of their breeding capacity and phenotypic stability is conducted.Results:Sanger sequencing results show that the mutation sites of B6C3Fe and B6C3Fe-g mice are consistent.After fluorescent staining of intestinal nerves,it was found that the heterozygous mice of the two strains had neuronal deletion in the distal colon,and this pathological phenotype was consistent with the pathological features of the diseased colon of Hirschsprung disease(HSCR).However,compared with the B6C3Fe strain,the B6C3Fe-g strain has a higher number of offspring and greater survival rates.Conclusions:The breeding strategy of the B6C3Fe-g strain ensures genetic and phenotypic stability,while improving reproductive efficiency,and is an ideal scheme for breeding Sox10 ^(Dom/+)mice.
文摘Magnetic structure of Pr6Fe13Ge at room temperature has been investigated by magnetic measurement, Mossbauer effect and neutron diffraction. Magnetic atoms are closely packed up and down the mirror planes at z = 0 and 1/2 and separated by the non-magnetic atoms located on the planes at z= 1/4 and 3/4, which constructs an M/NM/M sandwich structure (M: magnetic, NM: non-magnetic). The intralayer magnetic moments couple ferromagnetically and are out of ab plane at a small angle so as to form a component along c-axis. The interlayer coupling is antiferromagnetic for the ab component while ferromagnetic for the c component.
