Dynamical symmetric group approach to potential energy surface of molecule O3

Hamiltonian of an O₃ molecule is classicized by using coherent states, and its potential energy surface is obtained. The surface and the contours are plotted. The calculated force constants and dissociation energies are in good agreement with experimental values.     

新型稀土Te-Cu合金的抗氧化性能

将纯铜、Te-Cu合金、新型稀土Te-Cu合金放入马弗炉中加热氧化,通过绘制氧化动力学曲线、氧化皮金相组织观察、断面金相观察、X-ray分析,研究新型合金的抗氧化性能.结果表明,合金的氧化动力学曲线大致遵循抛物线规律;新型合金在600、800 ℃时具有比纯铜和Te-Cu合金更好的抗氧化性能;新型合金氧化膜的黏附性能优于Te-Cu合金;氧化膜中出现了除Cu2O、CuO外的新相;新型合金抗氧化性能的提高是元素Te和Ce共同作用的结果.     

散装水泥贮运集装箱研制报告

针对传统的水泥包装、贮运方法存在水泥损耗量大，水泥质量下降，污染环境等问题，研究用水泥贮运集装箱贮运水泥。实际应用表明，这种贮运集装箱的贮运效果远优于传统的水泥包装、贮运方法。     

197例广东教育学院学生性心理初步调查

通过对广东教育学院学生性心理进行问卷调查，根据调查的数据进行了分析和讨论，提示各类大、中学校进行性知识、性道德教育是非常必要的。     

高效快速多种燃气组分色谱分析法

采用热导检测器，通过几种柱的组合．采用多维柱切换系统，并自动完成阀的驱动和信号切换，实现性质不同的人工煤气和液化石油气主要成分一次进样全自动分析，该方法操作简便、分离效果好、灵敏度高、结果准确可靠．     

双周期Riemann边值问题解法的一个注记

解析函数的边值问题是复变函数的重要分支。许多工程技术、力学物理问题可转化为此类问题或奇异积分方程，而后者的求解又与这类问题有着密切的联系，因此它有广泛的应用价值。本文讨论了当G*∈L时双周期Riemann边值问题的求解方法与可解条件。     

Elementary Investigation of Increasing Polarization Performance of Air Electrode for CO2 Transfer

Air electrodes are the key components of Electrochemical carbon dioxide concentrating(EDC) cells. Therefore, the improvement of the polarization performance is beneficial to the increasing of CO2 transfer and cell stability .The preparing process of air electrode is improved by means of the pretreatment of active carbon(AC) and the selection of preparing method of platinum/carbon(Pt/C) powders. Besides, based on the analysis of orthogonal test results, the optimum preparing conditions of Pt/C powders in air electrode are achieved, that is, hydrazine hydrate concentration is 5%～10%, platinum capacity is 8mg/cm2, chloroplatinic acid concentration is 10.0mg/ml and water both temperature is 40℃.     

Electrooxidation of Mn(Ⅱ) on Pb-Sb-As Electrode in Sulfuric Acid

The electrooxidation of Mn(Ⅱ) on Pb-Sb-As alloy electrode in sulfuric acid has been investigated.In order to make the two steps of indirect electrosynthesis of benzaldehyde carried out in the same sulfuric acid concentration and also obtain high current efficiency of Mn(Ⅱ) to Mn(Ⅲ) and high yield of Mn(Ⅲ) oxidizing toluene to benzaldehyde in the mean time,the electrooxidation of Mn(Ⅱ) in 60% H2SO4 has been studied.Experimental results show that high current efficiency of Mn(Ⅲ) (about 75%) is obtained in 60%H2SO4 at 60℃.The reason affecting the current efficiency of Mn(Ⅲ) is discussed,and it is the coordination of sulfuric acid concentration and electrolytic temperature.The law is found that it is suitable for electrolysis at low temperature when sulfuric acid concentration is low and at high temperature when sulfuric acid concentration is high.     

丙/氨弹力网络丝的研究

提出了丙／氨弹力网络丝的生产工艺，并对丙／氨弹力网络丝的工艺和结构进行了综合分析。     

中和沉淀法Fe_3O_4的生成过程研究

本文利用XRD等技术对中和沉淀法Fe3O4的生成条件进行了研究,得到了Fe3O4的生成条件图。并以此对中和沉淀法Fe3O4的生成过程进行了讨论,发现Fe3O4的生成过程和空气氧化法Fe3O4的生成过程截然不同。中和沉淀法Fe3O4的生成过程随R及反应PH的不同而不同。反应温度的提高有利于Fe3O4生成量的增加并使Fe3O4的生成条件区域扩大。