旋流塔板上液滴的粒径分布和运动模型

在直径３００ｍｍ塔内，用双电子探针测量系统测定了旋流塔板上局部处的液滴粒径分布，得出了用上限对数正态分布函数表达的各参数与操作条件的关联式。以液滴离开塔板的初始位置为边缘分布、液滴粒径为条件分布，应用概率统计方法描述液滴群运动初始状态的基础上，提出了液滴运动的三维抛射模型，实验结果证明了其合理性。     

均质土坝渗流场与应力场耦合分析的数学模型

从均质土坝的渗透特性出发，分析了均质土坝渗流场与应力场相互作用的力学机制，提出了均质土坝渗流场与应力场耦合分析的连续介质数学模型，并讨论了该数学模型的有限元数值解法。     

特高速掺气水流对空化的影响

根据特高速掺气水流所表现的可压缩性，利用连续方程和动量方程，并考虑水流粘滞性和脉动影响，将掺气水流当作单向流分析。水流流经不平整体时，其后可产生在掺气情况下仍不能消除的负压。此时，空化已不可避免，且随马赫数增加，掺气反而会使负压值增加，因而，将不再具有减蚀作用。     

Novel tunable dynamic tweezers using dark-bright soliton collision control in an optical add/drop filter

We propose a novel system of the dynamic optical tweezers generated by a dark soliton in the fiber optic loop. A dark soliton known as an optical tweezer is amplified and tuned within the microring resonator system. The required tunable tweezers with different widths and powers can be controlled. The analysis of dark-bright soliton conversion using a dark soliton pulse propagating within a microring resonator system is analyzed. The dynamic behaviors of soliton conversion in add/drop filter is also analyzed. The control dark soliton is input into the system via the add port of the add/drop filter. The dynamic behavior of the dark-bright soliton conversion is observed. The required stable signal is obtained via a drop and throughput ports of the add/drop filter with some suitable parameters. In application, the trapped light/atom and transportation can be realized by using the proposed system.     

高速波分复用无中继光纤传输实验系统

利用自行研制的模块化高稳定度光发射机、光接收机、掺饵光纤功率放大器和掺饵光纤前置放大器，实现了4×622Mb／s×200km、2．5Gb／s×200km和4．354Gb／s（1×2．488Gb／s＋3×622Mb／s）×160km的常规单模光纤无中继传输实验。带有掺饵光纤前置放大器的四路光接收机灵敏度达到－46．8dBm（622Mb／s，NRZ223－1　PRBS）和－39．5dBm（4×2．5Gb／s，NRZ27—1PRBS）。系统各信道误码率优于4×10－12～4×10－15。     

用等微增率潮流为最优潮流赋初值

等微增率潮流是不考虑不等式约束的最优潮流。用等微增率潮流为最优潮流赋初值，能使最优潮流快速平稳地收敛到最优点，缩短最优潮流的运行时间，算例表明该方法行之有效。     

Antibacterial and physical properties of ZnO with pH-sensitive morphology

The variation in morphology of zinc oxide (ZnO) with the pH of 0.05 M Zn(NO₃)₂ and 1.00 M NaOH aqueous solutions is demonstrated. Microstructured ZnO ranges from cuboid to spindle as the pH is reduced from 12 to 9. The ratio of visible-to-UV peak from photoluminescence spectra is also decreased, whereas the energy gap calculated from UV-Vis spectra remains comparable. Furthermore, nanospheroids and microellipsoid are, respectively, obtained when the molar concentration of NaOH is reduced to 0.20 and 0.10 M for the synthesis with the pH of 7. Due to their large surface-to-volume ratio, these ZnO nanospheroids exhibit a higher antibacterial activity than that of commercial ZnO in the disc diffusion method. According to this method as well as the minimal inhibitory concentration measurement, the effectiveness is substantial in the case of Staphylococcus aureus and Escherichia coli. By contrast, the inhibitions of Klebsiella pneumoniae, Salmonella typhimurium and Pseudomonas aeruginasa are barely observed.     

Degradation and mineralization of 2,4,6-trinitroresorcine in various photochemical systems

Comparison was observed for degradation and mineralization of the explosive 2,4,6-trinitroresorcine (TNR) in different photochemical systems TNR/UV, TNR/UV/TiO₂, TNR/UV/H₂O₂, TNR/UV/O₃, TNR/UV/TiO₂/H₂O₂ and TNR/UV/TiO₂/O₃ using High Performance Liquid Chromatography coupled with Mass Spectrometry (HPLC/MS) and Total Organic Carbon (TOC) analysis. Addition of oxidizing agents such as H₂O₂ or O₃ accelerated the rate of TNR conversion and mineralization. Highest reaction rate was obtained in TNR/UV/TiO₂/H₂O₂ system. The intermediate products were characterized and identified by LS–MS technique. The similarity in intermediate products of TNR suggested the analogous reaction pathways of the TNR degradation by these different systems.     

离子注入技术在水轮机材料空蚀改性中的应用

本文综述了离子注入技术及其在金属材料表面改性中的应用，分析了水轮机材料空蚀破坏的机理（将空蚀看作是疲劳、硬度和磨损的一种交变力的作用），介绍了离子注入技术对水轮机材料的空蚀改性有较好的作用．