Doris Lessing, the Persian-born, Rhodesian-raised andLondon-residing novelist whose deeply autobiographicalwriting has s......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

Background Atrial fibrillation(AF)causes a continuum of atrial anatomical remodeling.Methods Using a library of perfusio......

目的:探讨不同容量罗哌卡因在超声引导下肌间沟臂丛神经阻滞的应用效果,为超声引导下肌间沟臂丛神经阻滞中罗哌卡因容量选择提供参......

利用解析方法和几何不等式理论，研究了有关n维单形内点的几何不等式问题，建立了n维欧氏空间E^n中关于n维单形内点的一类几何不等式，作......