苯磺酰苯胺类药物理化性能的研究

利用高效液相色谱和分光光度法，研究了新合成的5个苯磺酰苯胺类化合物的酸离解常数和脂溶性，结果表明，他们具有较弱的酸性和合适的脂溶性。预计会有较好的抗肝片吸虫活性。     

Experimental and Theoretical Evidence for the Existence of Broad Forbidden Gaps in the Three—Component Composite

The influence of localized resonance on the properties of band-gaps of the two-dimensional periodic composite are analysed numerically and experimentally by comparing the two-component phononic crystal with the three-component one. The three-component composite which exhibits localized resonance in the elastically soft coating ring is composed of a square array of coated cylinders embedded in an epoxy resin. The coated cylinders consist of a steel inner core and a rubber coating, which has much smaller wave velocity and mass density than the matrixand tile inner material. Tile measured transmission power of tile three-component composite drops to the noise level in a broad ultrasonic frequency interval in contrast to the binary composite, which is in good agreement with the calculation using the finite element method.     

Structure of Callisto and Ice Holes on Its Surface

The discovery of the induced magnetic field of Callisto that is a satellite of Jupiter has been interpreted as evidence for a subsurface salty liquid-water ocean,so we consider a layered structure of callisto,i.e.,a rock-metal core,an outer layer of ice and a middle layer of ocean.For the rock-metal core we try to indicate how the temperature,pressure and mass density depend on the depth.Due to motionn across the magnetic field of Jupiter in a plasma environment,the ice shell of Callisto must be broken down by electric current.     

钢丝绳隔振器隔振性能试验

钢丝绳隔振器最早由美国于20世纪70年代末研制成功，它是一种典型的非线性隔振器，阻尼特性与变形有关，具有良好的隔振性能。文中以特定电子器件的隔振设计为出发点，对比研究了采用钢丝绳隔振器时的隔振效果，为最终设计定型积累了试验数据。     

Y（Fe，Si）12化合物结构与磁性的第一原理计算

R（Fe，Si）12（R=Y，Nd）型稀土永磁材料具用重要的实际应用价值，然而对于V（Fe，Si）12化合物微观机理的理论计算工作至今尚未开展。采用新近发展的全势能线性缀加平面波（（L）APW）＋局域轨道（10）和广义梯度近似（GGA）密度泛函方法对其结构与磁性进行了研究。     

纳米Mg-Ni合金的制备技术

纳米Mg-Ni贮氢材料具有成本低，活化容易、贮氢容量大，吸放氢动力学性能优异等特点，有很大的应用前景。本文用机械合金化法进行了纳米Mg-Ni合金的制备，且对制备的粉末进行了XRD，TEM，SEM等微观结构的分析。     

线性常微分方程系统的稳定性

本文用矩阵的Lozinskii测度的方法,得到了线性常微分方程系统的某些稳定性准则.导出了关于线性系统x'=A(t)x稳定性的充要条件.对于A是常数或周期矩阵的情形,我们的结果与从Jordan标准型和Floquet理论得到的经典结论相同.     

Enhancement of Overall Photovoltaic Efficiency by Changing the Position of the Attaching Group -RSO3- on the Hemicyanine Dye Molecules

A new photoresponsive D-π-A dye, mPS, has been designed and synthesized.Compared to the parent dye PS, IPCE values in the region from 400 nm to 560 nm was greatly improved upon changing the attaching group from the p- position to the o- position of the π-conjugation bridge. A solar cell based on mPS generated a remarkably high overall yield η of 5.4% under irradiation of 80.0 mW cm^-2 white light from a Xe lamp, Compared with PS, the overall yield η increased by 64%.     

Banach空间中拟-似变分包含解的存在与逼近问题

研究了Banach空间中拟-似变分包含解的存在与逼近问题.给出了一种寻求解的新的迭代算法,建立了具混合误差的Ishikawa型迭代序列强收敛到解的充要条件.所得结果推广了一些相关的结果.     

大米中硒的FI-HG-AAS测定方法研究

研究了原子化器温度、载气流速、KBH4 浓度等条件对流动注射 氢化物发生 原子吸收光谱法 (FI-HG -AAS)测定硒时的影响。建立了FI-HG -AAS测定大米中硒的分析方法。在优化的工作条件下 ,测定硒的最低检测浓度为 0 3 3 μg·L- 1,线性范围为 0～ 5 0 μg·L- 1,相对标准偏差小于 4% ,加标回收率为 94%～ 1 0 2 %。本法克服了传统的间断氢化物发生 原子吸收光谱法分析速度慢、样品耗量大、操作繁琐且因手工进样在进样速度和进样体积上容易带来误差等缺点。方法操作简便、快速 ,灵敏度及自动化程度高 ,已广泛应用于大米及富硒大米中微量硒的测定