排序方式: 共有78条查询结果,搜索用时 15 毫秒
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G.Sam b in引入了(代数)信息基的概念,并证明了代数Scott D om a in范畴和信息基范畴是等价的.B.R.C.Bedrega l给出了ω-代数cpo和SFP dom a in的刻划.而G.Q.Zhang通过序结构给出了SFP dom a in的刻划.本文将引入了拟信息基的概念并给出了ω-代数cpo和SFP dom a in的刻划. 相似文献
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This paper reports, for the first time, that Archaerhodopsin-4 (AR4) could be reconstituted into phospholipid liposomes by self-assembly. AR4 is a new membrane protein isolated from halobacteria H.sp. xz515 in a salt lake of Tibet, China. This is a bacteriorhodopsin (bR) like protein, function as a light-driven proton pump. Experimental measurements verified that similar to bR, AR not only remains its biological activity in pmteoliposome, but also keeps a preferred orientation in self-assembly. 相似文献
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In this article, the authors mainly study how to obtain new semicontinuous lattices from the given semicontinuous lattices and discuss the conditions under which the image of a semicontinuous projection operator is also semicontinuous. Moreover, the authors investigate the relation between semicontinuous lattices and completely distributive lattices. Finally, it is proved that the strongly semicontinuous lattice category is a Cartesian closed category. 相似文献
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细菌视紫红质/聚乙烯醇复合膜的制备及相关功能研究 总被引:2,自引:0,他引:2
细菌视紫红质(bR)是一种独特的光敏蛋白,具有光致变色和光驱质子泵功能 。将bR蛋白包埋于聚乙烯醇(PVA)基质中,制备了bR/PVA复合膜。利用紫外-可 见分光光度计和自制的毫秒级动力学光谱仪,检测了样品的吸收光谱和光循环M中 间体在脉冲光激发下随时间的变化;同时,利用凝胶扫描成像仪及相关分析软件考 察了样品成膜后的均匀程度。实验表明:bR/PVA复合膜具有良好的均匀性、透明性 和力学性能,而且bR蛋白保持了原有的生物活性和光学性质,bR与M中间体之间能 达到一种光可控制的双稳态,M中间体的寿命也得到了显著的延长,证实了bR可以 提供一个用于信息存储的模型材料。 相似文献
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设(L,≤,∨,∧)为一分配格。满足Ax=x的向量x称为方阵A的特征向量。本文的主工目的是通过矩阵的伴随有向图来刻画矩阵的特征向量并给出矩阵特征向量的界。同时我们将定义矩阵A的上基本特征向量并讨论它的性质。 相似文献
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讨论在直觉模糊度量空间上的拓扑半群作用,引入诸如拓扑传递性,点传递性及点稠传递性等概念.考虑非敏感性与传递性,等度连续等动力学性质的相互关系. 相似文献