论文部分内容阅读
杰出的领袖数学家-克莱因
【机 构】
:
东北师大数学系130024
【出 处】
:
数学学习与研究
【发表日期】
:
2002年10期
其他文献
A series of oxygen permeable dual-phase composite oxides 60 wt% Ce0.8Gd0.2O2-δ-40 wt% Ln Ba Co2O5+δ(CGO-LBCO, Ln = La, Pr, Nd,Sm, Gd and Y) were synthesized t
由全国古籍整理出版规划领导小组资助,四川师范大学文学院教授王文才、万光治主编,列入“教育部省属高校人文社会科学重点研究基地,四川师范大学巴蜀文化研究中心”学术丛书的《杨升庵丛书》,最近已由天地出版社出版。
目的:探讨术中胆道造影在腹腔镜胆囊切除术中的临床应用价值。方法:对2005年4月-2008年7月行腹腔镜胆囊切除术中经胆囊管插管造影共27例的临床资料进行回顾分析。结果:造影均成
Three-dimensional paper-like graphene framework with highly orientated laminar structure as binder-f
A free-standing paper-like three-dimensional graphene framework(3DGF) with orientated laminar structure and interconnected macropores, was obtained by the hard
未来 1 0年将是我国大中型矿井闭坑的集中期。提出闭坑后的矿井可以用作地面生活垃圾和建筑垃圾的排放场、工业废弃物的填埋场、食用菌加工场和科普教育活动场。认为闭坑后的
Impact of alkyl chain branching positions on molecular packing and electron transport of dimeric per
Side chains play a critical role in tuning intermolecular interaction and charge transport in organic semiconductors. Here, we have systematically investigated
1背景人体拥有两大在功能上互补的免疫系统:天然免疫系统和获得性免疫系统。获得性免疫系统在进化上高度成熟,其功能由B细胞和T细胞介导,具有免疫记忆和两次免疫的特征。相对于
Lithium batteries (LBs) have become increasingly important energy storage systems in our daily life. However, their practical applications are still severely pl