无结构

The characteristics of pentacene/perylene derivatives based organic solar cells are investigated in this thesis Donor and acceptor layers are pentacene and N N'-dioctyl-3 4 9 10-perylenetetracarboxylic diimide (PTCDI-2~13C) respectively Twelve organic solar cells with pentacene/PTCDI-2~13C heterojunctions were fabricated to study the influence of various alkylic perylene derivatives on the power conversion efficiency Under the sunlight simulator with AM1 5G filter and 100 mW/cm2 the solar cell of pentacene/PTCDI-7C heterojunction with cathode of Ag/Al bilayer has the best performance among the devices with pentacene/PTCDI-2~13C heterojunctions In PL spectrum analyses the pentacene/PTCDI-7C film had lower recombination rate than the other pentacene/PTCDI-2~13C films; therefore more excitons could reach the P/N junction and enhance short-circuit current Furthermore the PTCDI-7C film grown on the surface of penatcene was more matched than other PTCDI films analyzed by the PL peak shifts of 10 nm and 45 nm thick PTCDI-2~13C and images of atomic force microscope More lattice match between the films of pentacene and PTCDI resulted in fewer defects in P/N junction and more carries can reach electrodes Accordingly the power conversion efficiency approach 2% was obtained from the solar cell with the active layer of pentacene/PTCDI-7C

本研究探讨以五环素/骈苯衍生物异质接面太阳能电池之特性，利用pentacene作为电子施体有机材料，PTCDI -2C~13C作为电子受体有机材料，制作出异质接面为pentacene/ PTCDI-2C ~13C等12种有机太阳能电池，比较不同碳数的骈苯衍生物对於有机太阳能电池之光电转换效率之影响。在AM1 5G、100 mW/cm2的模拟太阳光下，以pentacene/PTCDI-7C异质接面太阳能电池具有短路电流9 882 mA/cm2、开路电压0 376 V、填充因数0 523及光电转换效率达1 945%，皆比其他pentacene/PTCDI-2C ~13C异质接面太阳能电池来的大。由薄膜分析可知PTCDI-7C在这12种太阳能电池中具有较低的电子电洞复合发光效率，可以让较多激子到达异质接面进行电荷分离，减少电子电洞对复合发光的机率；此外，由光激发萤光光谱之峰值位移配合原子力显微镜表面结构图，可以得知当PTCDI-7C成长在pentacene上时会顺著pentacene的结构成长薄膜，故较无缺陷产生在P/N接面处；而在其他结构下则无此现象产生，致使在pentacene/PTCDI-7C薄膜中的载子有较大的机会可以移动至电极，使光电流提高，进而使光电转换效率提高。

It can change the ratio of the transmission system by adjusting the pushing force of the pulley.By analyzing the structure characteristics and force relations,the design method of an important parameter of the CVT hydraulic system and the rate of transmission ratio,are put forward by simulating to the emblematical driving models.The structure parameters of the hydraulic ...

在分析了金属带式无级变速器的结构特征和力学关系的基础上，通过对汽车典型行驶工况的仿真分析，提出了无级自动变速液压控制系统关键参数—速比变化率的设计方法，完成了液压系统的结构参数设计，并进行了仿真验证，从而为无级自动变速汽车的研制开发奠定了基础。

Therefore,his historical philosophy is reflected in the following:1/historical fortuity and agnosticism dominated by individual situation and unconsciousness;2/historical determinism decided by cultural structure and collective unconsciousness;and 3/hist...

因此格非的历史哲学表现在如下方面：一是由个体处境与个体无意识所支配的历史偶然论与不可知论；二是由文化结构与集体无意识所决定的历史宿命论；三是由个体意识结构与记忆方式、语言以及叙事文本的"诗学"特性所决定的历史虚拟论。

Passive power filters is adopt widely because it is simple configuration, convenient maintenance, low cost and etc. Otherwise, passive power filters is easy affect by change of system parameters, can' t remove sequential harmonics, and easy arose series and parallel resonance with system.

无源电力滤波器由于其结构简单，维护方便，造价低廉等优点仍然成为目前普遍采用的一种滤波手段，但是无源电力滤波器受到系统结构变化影响较大，不能消除连续谐波，且容易和系统阻抗发生相互作用，引起串联、并联谐振，严重时甚至使系统崩溃。

This is a reasonable method to investigate real polymer systems. The semiflexible model can capture the main features of aPS, and can semi-quantitatively describe the intermolecular correlation function, intramolecular correlation function, solubility parameters and x-ray scattering intensity for real aPS melt.

该模型能够抓住复杂的无规聚苯乙烯熔体的主要结构信息，可以半定量的描述各种条件下无规聚苯乙烯熔体的分子间相关函数、分子内相关函数、溶解度参数和x-光散射强度等结构和热力学性质，并得到了MD数据和实验数据的支持。

Results indicate that the stigmatic surface morphology of Pedicularis species is related to the type of corolla structure occurring in the species. Pollination studies in 8 Pedicularis species demonstrated adaptation between stigmatic surface morphology and other aspects of floral biology.

拥有更膨大，更粗糙的柱头表面特征的植物种类通常都是具喙或长管种类，而短管无齿种类的柱头平滑且无膨大，相反，对于长管具喙种类而言，柱头在膨大的同时，更形成了发达的"沟回"结构，这种柱头结构式样的不同直观、显著的改变了不同种类的传粉效率。

Based on new WuhanGuangzhou railway passenger dedicated line engineering practice,this paper introuduces the key technologies for the deformation monitoring, data management and analysis system, the prediction method and assessment criterion are put forward to determine the reasonable time of unballasted track laying to guarantee the quality of unballasted track.

以武广铁路客运专线为基础，系统地介绍了线下结构物沉降变形观测关键技术，数据管理与分析预测系统，提出了工后沉降的预测方法及评估条件与标准，合理确定无碴轨道开始铺设时间，以保证客运专线无碴轨道结构铺设的质量。

Thirdly, based on the continuum model, the natural modes of undamped complex framed structures are proved to be orthogonal with each other in a generalized sense. This leads to an alternative method for transient response analysis of undamped framed structures via the expansion of normal modes.

再次，基于MRRM列式，从连续模型的角度证明无阻尼复杂框架结构的固有模态具有正交性，并以此为基础构造模态叠加法来求解无阻尼复杂框架结构的瞬态响应。

This article summarizes the research achievement on the structure of anura mtDNA this year, analyzes the diversity of frogs mtDNA gene rearrangement, we found that there are 8 kinds of different mtDNA arrangement orders altogether, and also preliminarily analyzes the relation of this different gene structure.

本文综述了今年来在无尾目线粒体基因组结构的研究成果，分析了蛙类mtDNA基因重排多样性，结果发现无尾目动物共有8类不同的线粒体基因排列方式，并初步分析了这些不同基因结构的关系。

Suspensorily joined structure has the virtue that the construction progress is normally fast and does not hinder the traffic underbridge because Travelling Carriage is not used,but requiring comparatively large construction plant, high complexity in seam assembling, lower structural integrity compared to the suspensorilyplaced are its faults.

预应力混凝土T型刚构加挂梁结构是公路桥梁常用的一种桥梁结构型式，这种桥型根据施工方法的不同可分为悬浇和悬拼，悬浇结构需采用挂篮施工，优点是结构无干接缝，整体性好，刚度大，施工占用场地少，缺点是施工期间挂篮将影响桥下的通航通车，施工周期长；悬拼结构的优点是无需采用挂篮施工施工进度快，对桥下的通航通车影响较小，缺点是需占用较大的施工预制场地，拼装接缝处理难度大，结构整体性较悬浇差。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。