The magnetic anisotropy of Fe 25 Ni 75 nanocrystallites in the range of 10～20 nm was measured by the law of approach to saturation. The samples were prepared by mechanical alloying process, and the average ...The magnetic anisotropy of Fe 25 Ni 75 nanocrystallites in the range of 10～20 nm was measured by the law of approach to saturation. The samples were prepared by mechanical alloying process, and the average crystal size was determined by X ray diffraction. The effective magnetic anisotropy of these fine particles is found in an order of 10 6 erg/cm 3 that is much greater than that of normal crystal size of particles. The dependence of magnetic anisotropy on the particle size was studied. It has been demonstrated that the strain anisotropy occupies the most of the total magnetic anisotropy, and the internal strain is a critical factor for their magnetic properties.展开更多
With the development of autologous stem cells transplantation,the application of autologous fibroblast graft has been an important therapy in defect repair.In the past decade,amounts of studies have reported favorable...With the development of autologous stem cells transplantation,the application of autologous fibroblast graft has been an important therapy in defect repair.In the past decade,amounts of studies have reported favorable treatment effect and safety about the therapy.The material has the ability to produce human collagen in vivo.This article details recent scientific work of the cases,effect,injection technique,complications and safety of autologous fibroblast injection treatment.展开更多
文摘The magnetic anisotropy of Fe 25 Ni 75 nanocrystallites in the range of 10～20 nm was measured by the law of approach to saturation. The samples were prepared by mechanical alloying process, and the average crystal size was determined by X ray diffraction. The effective magnetic anisotropy of these fine particles is found in an order of 10 6 erg/cm 3 that is much greater than that of normal crystal size of particles. The dependence of magnetic anisotropy on the particle size was studied. It has been demonstrated that the strain anisotropy occupies the most of the total magnetic anisotropy, and the internal strain is a critical factor for their magnetic properties.
文摘With the development of autologous stem cells transplantation,the application of autologous fibroblast graft has been an important therapy in defect repair.In the past decade,amounts of studies have reported favorable treatment effect and safety about the therapy.The material has the ability to produce human collagen in vivo.This article details recent scientific work of the cases,effect,injection technique,complications and safety of autologous fibroblast injection treatment.
