基于CMOS图像传感器的成像系统设计

以OV 5 116CMOS图像传感器为例 ,讨论了基于CMOS图像传感器的成像系统的电路设计方法及系统设计中应注意的问题 ;并通过对CMOS图像传感器外围电路的优化设计实现了成像系统的微型化和轻量化。     

复数滤波器在数字全息图处理中的应用

数字全息图在微电路检测、粒度分析、透明场测量等小孔径、小视场对象测量和细胞观测等显微测量方面有着广泛的应用前景。根据离轴数字全息图的频谱特点,提出采用复数滤波器,利用计算机及相关算法对离轴数字全息图进行滤波,消除其零级及共轭像,同时可以得到全息图的相位分布。讨论了复数滤波器的设计方法,给出了实验结果。为数字全息图的压缩、再现和相息图制作提供了方便。     

Non-Invasive Detection of Anti-Inflammatory Bioactivity and Key Chemical Indicators of the Commercial Lanqin Oral Solution by Near Infrared Spectroscopy

Quality control methods of current traditional Chinese medicine (TCM) preparation is time-consuming and difficult to assess in terms of overall efficiency of the drug. A non-destructive rapid near-infrared spectroscopy detection system for key chemical components and biological activity of Lanqin oral solution (LOS), one of the best-selling TCM formulations, was established for comprehensive quality evaluation. Near infrared spectral scanning was carried out on 101 batches of commercial LOS under the penetrated vial state and traditional state. RAW 264.7 cells were cultured to detect the anti-inflammatory ability of LOS, and the reference concentrations of epigoitrin, geniposide, and baicalin were obtained by HPLC. The quantitative models were optimized by three kinds of variable selection methods. The correlation coefficients of prediction value of the models were greater than 0.94. The system also passed the external validation. The performance of the non-invasive models was similar to the traditional models. The established non-destructive system can be applied to the rapid quality inspection of LOS to avoid unqualified drugs from entering the market and ensure drug effectiveness. The biological activity index of LOS was introduced and predicted by NIRs for the first time, which provides a new idea about the quality control of TCM formulations.     

微波放电解离氯分子解离效率的测量

以Cl/Cl2/HN3/He为基础的NCl(a1Δ)/I作为一种化学激光新的体系,氯原子产生的多少对该体系的研究是至关重要的。利用滴定法研究了微波解离氯分子的解离效率。用HN3/He滴定Cl,由光学多通道分析仪监测NCl(a1Δ)和NCl(b1Σ)辐射的荧光。发现微波解离氯分子的效率并不是想象的那样低,在较小的氯流量下,最高的解离效率可以达到100％。     

激光触发多级多通道开关研究

研究了200kV激光触发多级多通道开关的运行机理,该开关在直流电压下以四倍频Nd:YAG激光器为触发源进行的实验结果表明：开关触发延迟时间及其抖动随开关电压、激光能量和充气压力上升呈指数下降趋势,对混合气体则随气体密度上升而上升。随透镜焦距的增大延迟时间及其抖动呈上升趋势。该开关实现了多通道放电。     

离子通道电子束回旋脉塞的等离子体波效应

研究了离子通道回旋电子束脉塞（ICECM）中的等离子体波非线性效应。利用流体理论与自洽非线性理论方法对ICECM中等离子体波效应的微观机理进行了分析。研究发现,等离子体波加强了电子束的纵向群聚,束-波互作用的能量交换效率及系统增益得到明显提高。数值模拟计算表明,对于中等等离子体密度、1.5kA电流和1MV加速电压的电子束,系统能够获得的脉冲功率和频率分别为200MW和280GHz的毫米波束。     

利用薄膜量热计测量高功率Z箍缩软X射线总能量

介绍一种采用脉冲恒压电源驱动的镍薄膜量热计,研制了测量系统和镍薄膜探测器,对探测器的电阻 温度特性进行了实验标定,该量热计已成功应用于测量“强光一号”加速器高功率Z箍缩等离子体软X射线总能量,分析了测量不确定度。     

三氧化二铝-聚苯乙烯复合微球的制备

以Al2O3-PS复合材料为原料,采用乳液微封装法制备出掺杂Al2O3的PS空心微球。三相溶液分别是两个水相：蒸馏水（W1相）、5wt%PVA水溶液（W2相）和3wt%Al2O3-PS溶液（O相,苯和三氯甲烷混合物作溶剂）。所得微球表面粗糙度低于50nm。     

CeF3闪烁探测器对DD中子的相对灵敏度

用国内近年新研制的CeF3闪烁体和常用闪烁体ST401分别配特性相同的光电倍增管,构成两种闪烁体探测器,在强度不随时间变化的DD中子源场中测量了这两种闪烁探测器的相对灵敏度,测量结果表明：CeF3闪烁探测器对DD中子的灵敏度比同尺寸ST401的灵敏度低一个量级以上。