Taking ancient village of Gelao Nationality in Wuchuan for example,theories of settlement geography were used to analyze settlement landscapes of ethnic groups with cultural peculiarity in certain regions from the per...Taking ancient village of Gelao Nationality in Wuchuan for example,theories of settlement geography were used to analyze settlement landscapes of ethnic groups with cultural peculiarity in certain regions from the perspectives of geographical and humanistic environment,distribution form,internal structure and settlement characteristics. Regional and national cultural characteristics were demonstrated to promote the inheritance,promotion and protection of such old and traditional civilization in terms of landscape,and provide valuable references for relevant researches.展开更多
Superconductivities in the 90K range as measured by resistance and magnetic susceptibility are reported for RBa_(2)Cu_(3)O_(9-y)(R=Y,Nd,Sm,Eu,Gd,Dy,Er,Tm,Yb)having the orthorhornbic perovskite structure.Unstable resis...Superconductivities in the 90K range as measured by resistance and magnetic susceptibility are reported for RBa_(2)Cu_(3)O_(9-y)(R=Y,Nd,Sm,Eu,Gd,Dy,Er,Tm,Yb)having the orthorhornbic perovskite structure.Unstable resistance drop above 100K has been found in ErBCO,probably associated with interfacial superconductivity.展开更多
文摘Taking ancient village of Gelao Nationality in Wuchuan for example,theories of settlement geography were used to analyze settlement landscapes of ethnic groups with cultural peculiarity in certain regions from the perspectives of geographical and humanistic environment,distribution form,internal structure and settlement characteristics. Regional and national cultural characteristics were demonstrated to promote the inheritance,promotion and protection of such old and traditional civilization in terms of landscape,and provide valuable references for relevant researches.
文摘Superconductivities in the 90K range as measured by resistance and magnetic susceptibility are reported for RBa_(2)Cu_(3)O_(9-y)(R=Y,Nd,Sm,Eu,Gd,Dy,Er,Tm,Yb)having the orthorhornbic perovskite structure.Unstable resistance drop above 100K has been found in ErBCO,probably associated with interfacial superconductivity.