Some Properties on Cone Co-radiant Mappings

The co-radiant and inverse co-radiant mappings from a cone to another in a topological vector space are discussed. The study is carried out in contemporary framework of cone theory in abstract space. A few of examples are presented. Various properties of these mappings are derived. The conditions for the co-radiant and inverse co-radiant mappings being continuous are shown.     

原子核内的夸克分布：Ⅱ 原子核的遮掩效应

本文讨论了原子核遮掩效应对EMC效应可能的贡献.根据众多的实验数据构造了一个能较好地描述遮掩效应的唯象关系,这一关系与通常人们表述遮掩效应的方法不同,是用通常结构函数的变量来表示的.     

集值渐近非扩张型映射的不动点定理

本文首先给出了集值渐近非扩张(型)映射的概念,在Hilbert空间中证明了连续集值渐近非扩张型映射的遍历收敛性定理。     

一类弱连续映射的拓扑度及其应用

对一类弱连续映射建立了多值拓扑度,获得了可解性,广义可加性,同伦不变性和切除性等基本性质,并得到了奇映射定理和锐角原理.最后还利用所得结果,讨论了非线性算子方程的解的存在性问题、广义固有值问题及拟线性椭圆特征问题.改进了这些方面已有的结果.     

扩散半群关于Lipschitz常数的压缩性

使用耦合方法研究扩散半群关于Ｌｉｐｓｃｈｉｔｚ常数的压缩性，所获结果广于Ｈｅｒｂｓｔ和Ｐｉｔｔ的相应定理，并在一些简单情形优于他们的估计。     

空间刚体区域与拟等距映射

在引入广义局部连通性以及可控曲面等概念的基础上,本文研究了空间一类刚体区域的几何特征,并由此导出了拟球面的一个必要条件.此外对R~n(n≥2)中拟等距映照的扩充及存在性等问题进行了讨论.     

Banach空间中一迭代序列及其耦合不动点

GUO Da-jun教授等在《非线性算子耦合不动点与应用》一文中对某些算子引入了全连续混合单调算子的耦合不动点的概念，得到了极小，极大耦合不动点及其相似，本文建立了一迭代序列，将其结果推广到更广泛的一类映射－半紧1－集映射，并削弱了紧性和全连续的条件，得到了乘积空间中的极小，极大耦合不动点定理。     

Shortening velocity of single muscle cells isolated from a molluscan smooth muscle

Summary The maximal unloaded shortening velocity (V_max) of smooth muscle cells isolated from the pedal retractor muscle ofMytilus was more than twice as large as that of the whole muscle, suggesting the presence of extracellular components which resist the contraction of the whole muscle. The V_max of the isolated cells was almost constant at cell lengths ranging between 0.5 and 0.831₀ (1₀, optimal length for tension generation) indicating that the intracellular resistance to contraction is negligible within this range of lengths.