Theoretical analysis of all-optical 2R regeneration in a SOA-based Mach–Zehnder interferometer

All-optical 2R regeneration in a semiconductor optical amplifier-based Mach–Zehnder interferometer is theoretically analyzed. It is shown that the chirp of the regenerated signal is positive, while the input signal has no chirp. The peak extinction ratio (ER) of the regenerated signal is associated with the input wavelength and there exists an input wavelength corresponding to the largest ER of the output signal. The output peak ER is also found influenced by the input power, with lower input power getting higher peak ER.     

克尔型介质平板波导中的弱非线性横向电场波

对芯子为克尔型非线性介质、覆盖层和衬底为线性介质的平板波导，在弱非线性近似下，导出了这类波导横向电场波满足的色散方程和场分布，其物理意义清晰，且大大降低了数值计算的强度。     

压电效应及其在家电中的应用

介绍和解释压电效应原理；简述家用电器中常用的压电器件及其检测方法。     

运动水平的多元分析

对排球运动水平应用多元分析进行总体评价 ,得出运动员的运动水平主要受心理素质 ,生理机能和技术水平发挥三方面共同作用。对因子分析法提出的综合因子作回归分析 ,得出了因子之间的相关性和重要性。最后 ,结合聚类分析给出一个等级的判别方法。     

Densities,excess molar volumes,and partial molar volumes for binary mixtures of water with monoethanolamine,diethanolamine, and triethanolamine from 25 to 80°C

We have measured densities of binary mixtures of water with monoethanolamine (MEA), diethanolamine (DEA), and triethanolamine (TEA) over the full range of compositions and over the temperature range from 25 to 80°C. Results of these measurements have been used in calculating excess molar volumes and partial molar volumes. Knowledge of the volumetric properties of these mixtures is useful in connection with industrial treatment of acidic gases; derived excess molar volumes and partial molar volumes can be used as a basis for understanding some of the molecular interactions in water-organic mixtures.Presented at the Symposium, 76^th CSC Congress, Sherbrooke, Quebec, May 30–June 3, 1993, honoring Professor Donald Patterson on the occasion of his 65^th birthday.     

一些抑制剂对脲酶反应速率的影响

利用氨气敏电极研究硝酸镍，磷酸盐及ＥＤＴＡ等酶抑制剂对脲酶分解尿素反应速率的影响以及抑制作用机理。