Spectroscopic study on the photophysical properties of chlorine substituted tetraphenylporphyrin-histidine and its zinc(Ⅱ)complexes

As the structural analogues of (bacterio)chlorophylls in photosynthetic organisms, porphyrins play an important role in building up artificial photosynthetic systems[13]. In natural photosynthetic pigment-protein complexes,certain amino acid residuals modulate the reactions ofcharge transfer and energy transfer via coordination andother types of interactions with chlorophyll molecules.For instance, in higher-plant photosynthetic reaction cen-ter PSⅡ, the oxidization-reduction system consistin…     

Modeling and Control of Active Suspensions for MDOF Vehicle

The conventional method for analyzing active suspension control for a vehicle is only to analyze a quarter or half car with a lower order degree-of-freedom (DOF) model, but such models do not actually model practical applications. Accurate models of a suspension control system require a multi-degree-of-freedom (MDOF) vehicle model with a detailed model of the controller. An MDOF model was developed including the influence of factors such as the engine, the seats, and the passengers to describe vehicle motion using a reduced order model of the controller designed by using the H∞ control method. The control system performance has been investigated by comparing the H∞controller with a linear quadratic (LQ) controller.     

以4,4''''-二(咪唑基亚甲基)联苯为客体的环糊精类轮烷的合成与表征

以4,4'-二(咪唑基亚甲基)联苯(bibp)为客体,通过自组装合成了4,4'-二(咪唑基亚甲基)联苯和环糊精的[3]类轮烷,并通过元素分析,1HNMR,ESI-MS,IR,TG-DSC进行了表征和固体热稳定性等研究,结果表明:由于bibp客体分子链较长,含有两个苯环,所以可穿入两个β-环糊精分子,形成[3]类轮烷.     

Emergent Property in Macromolecular Motion

In this paper, the model of inverse cascade fractal super-blocks along one direction (in the positive or negative) in the 3-dimensional space is developed to describe the self-similar motion in macromolecular system. Microscopically the cohesive and dispersed states of the motion blocks are co- existent states with vastly different probability of occurrence. Experimental results and theoretical analysis show that the microscopic cohesive state energy and dispersed state energy of each motion block are respectively equal to the macroscopic glassy state energy kTg and molten state energy kTm of the system. This singularity unveils topologically the non-integrability, mathematically the anholonomy, and macroscopically the emergent property. This singularity also reveals that the glass, viscoelastic and melt states are three distinct emergent properties of macromolecular motion from a macroscopic viewpoint. The fractal concept of excluded volume is introduced to depict the random motion at various scales in     

三维振镜激光扫描系统的控制算法及其应用

研究开发了一套低成本的国产三维动态聚焦振镜扫描系统，井成功应用到快速成型设备中．给出了三维动态聚焦振镜扫描系统的控制算法，及其在快速成型设备SLS（设备型号为ERPS—Ⅱ)中的应用．     

描述石灰石分解的分数维收缩核模型及模拟

基于分形理论中颗粒表面积与颗粒当量半径以及表面积与体积之间的关系式，考虑固体颗粒表面形貌的不规则性，建立了化学反应起控制作用的固体颗粒分解的分数维收缩核模型，并将其用来模拟石灰石颗粒的缎烧分解过程，取得了较为满意的模拟结果．同时，将其模拟结果与收缩核模型的模拟结果进行了比较．     

有源层厚度对非晶硅薄膜晶体管特性的影响

研究了有源层ａ－Ｓｉ∶Ｈ的厚度对ａ－Ｓｉ∶ＨＴＦＴ特性的影响．研究结果表明，ａ－Ｓｉ∶Ｈ层的厚度对ａ－Ｓｉ∶ＨＴＦＴ的静态特性（如开／关态电流比、阈值电压等）有较大的影响．理论分析表明，这是由于钝化层固定电荷在有源层背面引入了背面空间电荷层造成的．详细分析了背面空间电荷层对ａ－Ｓｉ∶ＨＴＦＴ特性的影响，提出了一个ａ－Ｓｉ∶ＨＴＦＴ有源层厚度优化设计的下限值，理论与实验相符合     

关联噪声驱动多维系统的随机动力学

应用随机方法，将关联高斯白噪声驱动系统的随机动力学由一维随机变量的情况推广到了多维的情况，推导了该情况下的一般福克－普朗克方程．应用以上得到的一般福克－普朗克方程，推得了双模激光系统的福克－普朗克方程．发现关联噪声情况下，双模激光系统的福克－普朗克方程变得更为复杂     

二维周期结构复合膜系的红外特性

给出了二维周期结构复合膜系电磁特性的基本理论；对二维正弦周期结构复合膜系和非谐振型二维周期结构复合膜系进行了实验研究．在二维正弦周期结构复合膜系中，反射和辐射特性在波长等于周期值附近发生了变化．理论计算结果与实验符合较好     

厚膜压力传感器的研究

用厚膜工艺制造压力传感器．研究了厚膜电阻浆料的电阻率与压阻系数的关系．承压基片选用ＺｒＯ２－Ｙ２Ｏ３３ｍｏｌ％增韧Ａｌ２Ｏ３陶瓷，大大地提高了压力传感器的性能．对承压片的应力分布进行了分析，介绍了压力传感器的结构设计方法