接触角

The results show that the hydrophilicity of PLA film is improved by introduction amido: the contact angle decreases from 78° to 56° and the free energy increases from 42.7mJ/m^2 to 51.4mJ/m^2. Compared with the control, osteoblast spread out more filopodia after 3 d incubation on amidation surface, and it entered cell division phase more quickly, which indicated that the surface amidation could promote the cell's adhesion and proliferation on the PLA film.

结果表明，酰胺基的引入改善了PLA膜的表面亲水性，其表面水接触角由78°减少到56°，自由能由42.7mJ/平方公尺增大到51.4mJ/平方公尺；与对照组相比，成骨细胞在改性表面培养3d后有大量的丝状伪足伸出，并且较快地进入了细胞分裂期，表明PLA膜表面的酰胺化能够促进细胞的黏附和增殖。

Glycerine, triethanolamine, corn starch and polyvinyl alcohol can be immobilized onto BOPP surface using cerous ions as initiator. Attenuated total reflecteion-FITR and CA results show that vinyl monomers also can be grafted onto polymer surface by cerous ion as initiator.

在D-果糖改性CPP膜的体系中，实验结果显示随着D-果糖初始浓度的增加，改性膜的表面水接触角先下降后略微增加；增加紫外光的辐照强度能够促进D-果糖对CPP膜的表面偶合改性。

The result makes clear, ester of different cyanic acid base silicon alkyl got succeeding assembly in base surface, its hydrophoby relatively before assembling, rise somewhat, to the contact of water horn can achieve 80 °, changed the character of chip surface apparently.

结果表明，异氰酸酯基硅烷在基底表面得到了成功组装，其疏水性较组装前有所提高，对水的接触角可以达到80°，明显改变了芯片表面的性质。

The adsorption of decyl and octyl Me sulfoxides at the silica/aq. solution interface and the contact angles of sulfoxide solns. on quartz were measured.

测定了癸基和辛基-甲亚基亚砜在硅胶/水溶液界面的吸附以及溶液在石英界面的接触角。

Three metal ion bridged self-assembled films of cis -di-bis(2,2'-bipyridyl-4,4'-dicarboxylate) ruthenium were fabricated and characterized by contact angle, UV spectra, cyclic voltammetry and XPS. Their photoinduced electron transfer properties were examined.

本文通过三种金属离子桥联的方式制备了一系列cis-RuL22 （L代表4，4'二羧基-2，2'联吡啶）自组装膜，并利用接触角，UV光谱，循环伏安法以及XPS对自组装功能膜进行了表征。

The UV and IR spectroscopic studies of the monomer films showed that the photoreaction ratio of monomer (about 50%) was higher than the corresponding photosensitive polymer (about 10%, PVCi). The polarized IR spectra proved that obvious anisotropic absorption was displayed in the irradiated photosensitive film. With polarizing microscopy method, we found that these kinds of photoalignment films exhibited good alignment ability, and the stability of the photoalignment film could reach about 100℃. 2 A photosensitive self-assembled monolayer was fabricated that contained photo-cycloadditable groups, such as, coumarin and cinnamate. The reaction process were detected by contact angle method because the IR absorption of monolayer was very weak. The photosensitive self-assembled monolayer promote uniform alignment of nematic liquid crystals by LPUV, and it thermal stability could reach about 130℃. 3 A cationic bolaform amphiphiles was synthesized that had two photosensitive double bonds, and can be polymerized by ultraviolet. A layer-by-layer self-assembled deposition film was prepared in aqueous solution by using this material and poly (sodium 4-styrenesulfonate). The UV-Vis. spectra proved that the multilayers film was uniform and layer-by-layer. When LPUV irradiated the film, the photopolymerizable double bond underwent [2+2] cycloaddition, and the production of the reaction distributed along the polarized direction of incident LPUV. Polarized UV-Vis. spectra indicated that the irradiated self-assembled multiplayer film was anisotropic, and the dichromic ration is about 0.09, it is higher than the spin-coating method of photosensitive polymer or monomer. We used this anisotropic film as alignment layer of nematic liquid crystals, and obtained a uniform and stability alignment result, the static contrast ratio is about 100, which is very close to application of liquid crystal device. This thesis is an instance that the photochemical material was used in the physics region of liquid crystals, the route that was from photosensitive monomer, self-assembled monolayer film to self-assembled multiplayer film was undergone, by this logical research method photoailgnment of liquid crystal was extended and consummated.

围绕上述思路开展了如下工作：1合成了三种可进行光二聚反应的光敏小分子单体，LPUV 辐照制作了光控取向膜；用紫外-可见光谱法和红外光谱法分析了薄膜中的光化学反应，发现小分子的光反应程度可达到50%以上，至少比光敏高分子高出5倍；薄膜的偏振红外光谱证实，经过LPUV 辐照后薄膜出现了明显的各向异性；将小分子光控取向膜制成液晶器件，在偏光显微镜下观察看到均匀一致的液晶取向；并且热稳定性达到100℃左右，接近实用化要求。2制备了含肉桂酸、香豆素基团的自组装单层膜；采用接触角的方法监测自组装反应的动力学过程；紫外-可见光谱证实了自组装单层膜在石英基板表面形成；自组装单层膜经LPUV 辐照后能诱导液晶均匀取向，而且热稳定性可达130℃，热稳定性进一步提高。3合成了含有光敏双键的双季铵盐，在水溶液状态下将它和聚乙烯基苯磺酸钠沉积生成layer-by-layer 自组装多层膜，紫外-可见光谱证实这是一个逐层均匀的沉积；在LPUV 照射下，自组装膜中的光敏双键按照偏振方向发生[2+2]环加成反应，形成取向膜，用二向色性值评价的分子取向度高于高分子及小分子光控取向膜的水平；实验证明用自组装多层膜制成的液晶器件亮暗态均匀，静态对比度约为100，达到实用化器件的水平。

Being Compared contact angle changes of various adhesives on different surface of Moso bamboo and Chinese fir with the coefficients of penetrability, it was found that wettiability of polymeric diphenylmethane diisocyanate adhesive was much better than emulsion polymer isocyanate adhesive, wettiability of phenol-formaldehyde adhesive and urea-formaldehyde adhesive were in the middle of above two adhesives.

通过研究不同胶粘剂在毛竹表面的接触角变化，并结合胶粘剂渗透扩散系数，发现聚异氰酸酯胶在竹材表面的润湿性较好，而双组分乳液型聚异氰酸酯胶的表面润湿性较差，酚醛树脂胶和脲醛树脂胶润湿能力处于二者中间。

The calculation results indicate that dropwise concdensation can be influenced considerably by surface topography and contact angle.

模型计算结果表明，表面形貌和表观接触角对滴状冷凝传热均有很大影响。

In order to further study the theory of dropwise condensation, the effects of surface topography of material and apparent contact angle on heat transfer in dropwise condensation are investigated in this paper based on the theoretical model of dropwise condensation established by former researchers.

为了从理论上对滴状冷凝进行更深入地研究，本文在实验的基础上对前人关于滴状冷凝的数学模型进行修正，考虑了冷凝表面形貌及表观接触角对滴状冷凝传热的影响。

Finally, in consideration of the interfacial interaction between liquid and solid, a new model for dropwise condensation heat transfer was proposed by using the population balance concept and considering the effect of surface topography and contact angle.

最后，针对液固界面相互作用对滴状冷凝传热的影响，以液滴数平衡概念为基础，考虑表面形貌和表观接触角对冷凝传热的作用，建立了新的滴状冷凝传热模型。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。