分子膜

The interaction of DAB and RB with SPM and the cells are exothermal and idiopathic, which contained the union of non-covalent bonds, such as electrostatic bond, hydrogen bond and van der Waals force. Moreover, most of DAB and RB were accumulated on the excellular membrane and walls, to hardly enter the cytoplasm.

结果表明， DAB， RB与SPM和细胞外膜有强烈的单分子层化学吸附，是自发的放热反应，主要通过电荷对吸引、氢键等非共价键结合在SPM和细胞外表面，且绝大部分DAB， RB积累、滞留在细胞膜壁上。

The results showed that the maximum UV absorption wavelengths of those 1,3,4-oxadiazole derivatives in dichloromethane were in the range of 268~327 nm, and their maximum photoluminescent wavelengths in dichloromethane and solid film were located at 332~390 nm and 359~439 nm, respectively. The 1,3,4-oxadiao1e derivatives exhibit a first endothermal peak at 120~328℃ in the DSC heating process, and the symmetrical 1,3,4-oxadiazole derivatives display a higher melting temperature. The CV curves of those 1,3,4-oxadiazole derivatives indicate that the reductive potentials of the 1,3,4-oxadiazole derivatives are located at -1.03~0.98 V, and their LUMO(the lowest unoccoupied molecual orbit) energy levels are -3.71~-3.76eV.

结果表明，该类衍生物在二氯甲烷溶液中的最大紫外吸收波长在268~327nm范围，在二氯甲烷溶液和固体膜中的最大荧光发射波长分别在332~390nm和359~439nm范围；DSC分析结果表明，5个噁二唑衍生物的起始吸热峰位于120~328℃之间，其中对称结构的噁二唑衍生物显示了较高的熔融温度；由循环伏安图和相关计算结果表明，5个噁二唑衍生物的还原电位位于-1.03~-0.98V，其相应的最低非占有分子轨道能级在-3.71~-3.76 eV之间。

This dissertation aims to: improvement in regularity of ladderlike polysiloxane through strong H-bonding template and"half-water-hydrolysis"methods; synthesis of several functional polysilsequioxane with ethoxyl, hydro and aminopropyl groups respectively; and the preparation of nanoporous film with good mechanic properties from ladderlike functional polysilsesquioxane with intermolecular porogen via micro-phase separation process.

本论文旨在利用强氢键模板作用和"半水水解-脱氯化氢缩聚"的改进方法，提高反应性的梯形聚硅氧烷的规整度；合成乙氧基封端、含氢基和氨丙基的几种功能性梯形聚硅氧烷；以及探索利用含分子内成孔剂的梯形聚倍半硅氧烷通过微相分离制备低介电常数二氧化硅纳米微孔膜。

The calmodulin antagonists (calmidazolium, W7agarose) and anticalmodulin serum had inhibitory effect on the extracellular reduction of ferricyanide with their concentration that yielded 50% inhibition were 1.5 μmol/L, 10 μmol/L and 10 mg/L respectively.

结果表明，大分子的CaM抑制剂W7agarose、小分子抑制剂calmidazolium及CaM的抗血清对跨质膜铁氰化钾的还原均有不同程度的抑制作用，半抑制浓度分别为10μmol／L、1.5μmol／L和10mg／L。

This thesis demonstrates the pre-polymers in a polymer-dispersed cholesteric liquid crystals can be polymerized into a polymer film, which can eliminate the aligning capability of the homogeneous alignment layer. Thereafter, the textures of the cholesteric liquid crystals in UV-cured region can be changed from reflective planar texture to the scattered focal conic one. Additionally, the clearing temperature of the liquid crystals can be reduced by doping with chiral dopant or monomers. The cause is the increase of the impurity concentration in LCs. In other words, if the monomers are polymerized, the clearing temperature of LCs in that region should increase due to the decrease of the impurity concentration. Therefore, impurities associated with doping with monomeric and chiral dopants cause the clearing temperature of LCs in cured region to differ from that in uncured region.

本文中，我们提出在高分子聚合物薄膜之胆固醇液晶(polymer-dispersed cholesteric liquid crystals，简称PDCLCs)中，利用紫外光使PDCLC中的单体聚合成薄膜，此即为光引致聚合反应，而该薄膜将原本在表面所作的配向膜覆盖且破坏其配向能力，使胆固醇液晶由原本反射的planar结构转换成散射的focal conic结构；另外，有关液晶材料的相变温度会由於掺杂手性分子或单体而降低，此因液晶材料内『杂质』浓度增加，而造成的液晶材料之不纯度增加，最终导致相变温度降低，若搭配上述光引致聚合反应，则由於光照区之单体聚合，使该区域单体占总材料之比例下降，即不纯度降低，进而使液晶材料之相变温度上升，该区域之相变温度与未照光区有所不同。

Production of mitogen-contamination free alginates with variable ratios of mannuronic acid to guluronic acid by free flow electrophoresis.

影响微囊膜通透性的因素有：(1)多聚赖氨酸的相对分子质量；(2)多聚赖氨酸的浓度；(3)海藻酸钠与多聚赖氨酸相互作用的时间。

The results showed that unsaturated polyester with a molecular weight of 5000 can be obtained by 8 hour react at 210℃,-0.098MPa with Antimony Glycolate as catalyzer.

结果表明，以乙二醇锑为催化剂，在210℃，-0.098MPa下反应8h即可制备分子量在5000左右的不饱和聚酯，通过调整分子量和不饱和聚酯分子链中刚性基团和柔性基团的比例，制备了具有较低的玻璃化转变温度(Tg=15.15℃)和优良综合力学性能的不饱和聚酯，可以用作乳液中的(来源：ABC0643论文网www.abclunwen.com)成膜组分。

Cellular adhesive molecular is a kind of membrane glycoprotein, which has associations with invasion and metastasis of tumor.

文摘：细胞粘附分子是一类跨膜糖蛋白、与肿瘤侵袭转移关系密切。

Keywords: Higher halophyte; K / Na selectivity in the plasma membrane; physiological and molecular mechanism

中文关键词：高等盐生植物；质膜 K /Na 选择性；生理和分子机制

Pike protein consists of S1 and S2 subunit. S1 is head and S2 is rod-shape part, intermolecular effort can bind each other. S1 can bind with host cell epimembranal acceptor. S2 can fix integral Spike protein on the cellular membrane and mediate cell-fusion with virus and host cell. There are significant antigen determinant of virus in Spike protein, genic heterogenesis can effect viral pathogenicity. SARS-CoV Spike protein, which has 23 pieces larvaceous glycosylation sit, consists of 1256 amino acid. Its N-terminals and C-terminals is corresponding conservative.

蛋白是I型膜糖蛋白，介导病毒与宿主细胞膜上的受体结合并与宿主细胞膜相融合。S蛋白由S1和S2两个亚基组成。S1形成球状部分，S2形成棒状部分，两者之间通过分子间的作用力相互结合。S1能与宿主细胞上的受体结合，S2可把整个S蛋白固定在细胞膜上，并介导病毒包膜与宿主细胞膜融合。S蛋白上有重要的病毒抗原决定簇，S基因的突变会影响病毒的致病性。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐