查询词典 bond angle

Studies discover that the minimal deposition threshold is 20eV and the maximum is 60eV with the different incidence point locations and incidence postures of C36 clusters. When the incidence angle is not over 60, C36 may roll or slip to the region of smaller bonding energy and then bond. So the bonding probability is raised.

研究发现：由于C36入射点位置及入射姿势的不同，其在金刚石（100）晶面沉积时的沉积阈值最小值为20eV，最大为值60eV；在入射角不超过60°斜射时，由于水平运动分量的存在，C36可能翻滚及平滑至成键能量较小的区域后再成键，因而提高了成键几率。

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。

In this program, the declining segment of the stress-strain relation of the concrete, the restriction effect of hooped reinforcement and the bond-slip problem of the reinforcement are considered, as the same time the optimized arithmetic is applied to accelerate calculation procedure. Though the appropriate experiment arrangement, the influential factor such as the strength of concrete, the ratio of hooped reinforcement, the ratio of axial compression and the loading angle are researched, some available rules of carrying ability and ductility of the special-shaped column can be attained.

程序中考虑了混凝土应力应变曲线的下降段及箍筋对混凝土的约束影响，采用了合适的算法加速计算过程并考虑了纵筋锚固滑移的影响，通过正交试验分析了混凝土强度、体积配箍率、轴压比和荷载角对异形柱截面抗弯承载能力及截面曲率延性比的影响。

So, thinking of the incomplete contract and private benefits of control rights, based on the incomplete contract analysis frame and from the angle of dynamic allocation of control rights to study the convertible bond contract design is the foreland of security design theory and incomplete financing contract, which is also the main study issue of this dissertation.

因此，考虑到契约不完备及控制权收益冲突的存在，基于控制权动态配置的视角在不完全分析框架下研究可转债融资契约设计，是目前国内外理论研究的前沿问题，也是本论文研究的主要问题。

In this research, mixed SAM of HS-(CH2)15-CH3 and HS-(CH2)15-COOH was immobilized on gold substrate through chemical bond, and PEG and PMB were in sequence linked to the –COOH terminal groups on the SAM sureface by EDC/NHS amide coupling. The PMB immobilized surface was applied to study its specific and nonspecific interactions with LPS by ellipsometry and by SPR spectroscopy. The modified surface is characterized by FTIR, XPS, ellipsometry and contact angle measurements.

本研究系利用HS-(CH2)15-CH3及HS-(CH2)15-COOH混合溶液，在金表面形成稳定共价键结之混合自组单分子膜(Self-Assembly Monlayer，SAM)，再将PEG及Polymyxin B分子依序接至SAM表面之-COOH官能基上，利用表面电浆共振(Surface Plasmon Resornance，SPR)仪或椭圆仪，侦测其与LPS分子之特异与非特异性吸附行为。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。