WS~*-闭空间的性质

该文引入了一类包含Ｓ－闭空间的拓扑空间——ＷＳ＊－闭空间,并讨论了它的一些性质,对一些关于Ｓ－闭空间的已知命题,建立或推广得到ＷＳ＊－闭空间的相应命题。     

一种磨茹香气香料——1-辛烯-3-醇的合成与应用研究

从１－戊醇出发,通过卤代反应,格氏反应,制备得到１－辛烯－３－醇。该产品具有愉快的蘑菇香气,可用于食品香精的调配中。     

Cr^3＋在AgX（X=Cl,Br）四角晶位中的零场分裂和g因子

用双自旋－轨道耦合模型研究了Ｃｒ３＋在ＡｇＸ（Ｘ＝Ｃｌ,Ｂｒ）四角晶位中的零场分裂Ｄ和ｇ因子．研究表明,中心金属离子和配体（Ｃｌ,Ｂｒ）对络合物ＥＰＲ参量的贡献都应考虑．     

求导数零点的快速收敛的迭代法

以Ｎｅｗｔｏｎ迭代法为基础,给出了一个求导数零点的快速收敛的迭代法：∫ｙｎ＋１＝ｘｎ－ｆ＇（ｘｎ）／ｆ″（ｘｎ） ｘｎ＋１＝ｘｎ－（ｘｎ－ｙｎ＋１）ｆ＇（ｘｎ）／［ｆ＇（ｘｎ）－ｆ＇（ｎ＋１）］。     

钴络合物催化双羰化氯苄合成苯丙酮酸

α－酮酸是合成α－氨基酸和α－羟基酸的中间体．在Ｃｏ２（ＣＯ）８或Ｃｏ２（ＣＯ）８－Ｃｏ（ＰＰｈ３）ｍＸｎ催化下,苄基卤经双羰化合成苯丙酮酸,并初步研究了其反应机理．     

Ramsey数R（6,n）的两个下界

构造了２个新的素数阶循环图,从而得到了２个Ｒａｍｓｅｙ数的下限：Ｒ（６,１６）≥２７８,Ｒ（６,１７）≥３９８。此结果已经计算机验证,填补了Ｒａｍｓｅｙ数下界的２个空白。     

CosackieB—3病毒对BALB／C小鼠心肌超微结构的影响

ＢＡＬＢ／Ｃ小鼠腹脸注射柯萨奇Ｂ－３病毒后,第三天心肌呈现轻度用性病变,大多数细胞结构正常,少数细胞发生病变,心肌闰盘局部扩张。     

一个新的比较定理及其应用

证明了一个微分不等式－比较定理,将结果应用到一阶微分方程周期边值问题解的存在性证明中。所得结果与已有结论＾「２,６」是互不包含的。     

Two tyrosines in CD3ε-ITAM are required to induce T lymphocyte apoptosis

CD3ε of T cell antigen receptor complex (TCR/CD3) plays an important role in the resembling of the complex and activation signaling through its conservative immunoreceptor tyrosine-based activation motif (ITAM) in the cytoplasmic tail. Previous study showed that a chimera molecule, consisting of the extracellular-transmembrane domain of human CD8α fused to the cytoplasmic domain of CD3ε, induced apoptosis of T lymphocytes, indicating that apoptotic signals were transduced through the CD3ε- ITAM. To elineate involvement of the two tyrosines in apoptotic signaling pathway, cDNAs with mutations at Y170F, Y181F and Y170F/Y181F in CD8-ε-ITAM were made by point mutation and PCR, and then cloned into pcDNA3 eukaryotic expression vectors. Stable expression cell lines were established after transfection of the expression vectors into CD8+- Jurkat T lymphocytes. Stimulation of these cell lines with anti-CD8 monoclonal antibody showed that only the cells with expression of wild type chimera CD8-ε died by apoptosis, but not those cells with expressions of mutated CD8-ε chimera, indicating that the two tyrosines in CD3ε-ITAM were required for the apoptotic signal transduction in T lymphocytes.     

氧化铝超细粉体的表面吸附改性

本文选用十二烷基苯磺酸钠（SDBS）,氯化十四烷基吡啶为改性剂,探讨其在Al2O3／H2O的固液界面上的吸附等温线,同时测定了Zeta电位与粒子平均孔径讨论其吸附机理;为考察改性效果测定了样品的红外光谱、粉末接触角、悬浮体的稳定性,粒子平均大小等物化性质．