Experimental Study on Spiral Patterns in Dielectric Barrier Discharge System

Spiral patterns are obtained in a dielectric barrier discharge system with water electrodes. The dynamics of spiral formation and transition is investigated. Wavelength characteristic of spiral patterns is also studied. Correlation measurements indicate that the wavelength of spiral pattern increases with the increasing gas gap width and oscillates with the increasing drive frequency.     

一般线性模型下方差最小范数二次无偏估计的稳健性

本文给出了一般线性模型下,由最小二乘得到的方差估计与最小范数二次无偏估计相等的充分必要条件,并且当Gauss-Markov估计与最小二乘估计相等时,可以得到一个简单的等价条件。     

提高大气吸收光谱测量分辩率的新方法

在仪器函数和吸收线型已知的情况下，提出了一种非线性拟合退卷积法，用于提高气体吸收测量的光谱分辨率。数值模拟和实际应用都表明：该方法用于室内气体吸收光谱的测量，在保持吸收线型不变的情况下，可以显著地提高测量的光谱分辩率，降低测量噪声。将该方法用于怀特池中模拟大气吸收光谱测量，减小了激光线宽对测量结果的影响，获得了比较理相的结果。     

Quantum—Confined Stark Effect of Vertically Stacked Self—Assembled Quantum Discs

We study the electronic energy levels and probability distribution of vertically stacked self-assembled InAs quantum discs system in the presence of a vertically applied electric field. This field is found to increase the splitting between the symmetric and antisymmetric levels for the same angular momentum. The field along the direction from one disc to another affects the electronic energy levels similarly as that in the opposite direction because the two discs are identical. It is obvious from our calculation that the probability of finding an electron in one disc becomes larger when the field points from this disc to the other one.     

Optical spectra and Exciton State in Vertically Stacked Self—Assembled Quantum Discs

We study the oscillator strengths of the optical transitions of the vertically stacked self-assembled InAs quantum discs.The oscillator strengths change evidently when the two quantum discs are far apart from each other.A vertically applied electric field affects the oscillator strengths severely.while the oscillator strengths change slowly as the radius of one disc increases.We also studied the excitonic energy of the system.including the Coulomb interaction.The excitonic energy increases with the increasing radius of one disc.but decreases as a vertically applied electric field increases.     

钽—二溴苯基荧光酮—酒石酸—十六烷基三甲基溴化铵四元混配型络合物体系的研究及其分析应用

文献均认为在钽与苯基荧光酮、CTMAB组成的络合物中,酒石酸作为第二配位体参加,组成四元混配络合物体系。本文研究了以二溴苯基荧光酮(DBPF)为显色剂测定钽的条件。证实必须有酒石酸或其它配位原子是氧的络合剂、或有F~-存在,才有显色反应,其中以酒石酸参加组成     

多功能单侧外固定支架治疗胫骨开放性骨折21例

采用ＳＧＤ骨科多功能单侧外固定支架治疗严重胫骨开放性骨折２１例，取得满意疗效。该多功能单侧外固定支架能方便准确地对骨折端进行复位和固定，对骨折端具有加压作用，固定牢靠；穿针部位避开骨折处，且穿针数目少，术中软组织损伤少；术后调整容易，不影响非固定部位的关节活动。     

空穴传递混合器的结构原理与应用

阐述了适用于挤出机上的空穴传递混合器（CTM）的结构特点、混合机理，并给出了应用实例。空穴传递混合器对物料有较强的混合、塑炼和分散功能，应用空穴传递混合器后，在CTM高的剪切和分散功能作用下，使挤出物的混合质量有了大幅度的提高，流动条纹厚度明显减小。