高师化学实验教学整体改革的研究与实践

介绍了“高师化学实验教学整体改革的研究与实践”课题研究的理论基础、研究内容、实施效果情况。     

角度误差在平面尺寸链中的作用

应用全微分概念,不忽略角度误差的影响,解平面尺寸链,概念清晰,计算准确,分析了角度误差在平面尺寸链中的作用.     

田间增加UV-B辐射对丝瓜光合作用日变化及水分利用效率的影响

在自然条件下，增加不同强度的UV—B辐射，对攀援植物丝瓜叶片光合速率日变化和水分利用效率进行了研究，发现经增加R1强度UV—B辐射处理的丝瓜的净光合速率和蒸腾速率比对照上升了28％和33％，水分利用效率则下降了3．4％，而经增加R2强度UV—B辐射处理的丝瓜的净光合速率和蒸腾速率比对照上升了47％和13％，水分利用效率也上升了28％，且其光合作用不受午间强光的抑制，光合午休现象消失了．这表明，在该实验的UV—B强度下，丝瓜的光合作用不但未受抑制，反而还增强了，说明适当增加UV—B辐射对丝瓜的生长有利．     

在微波作用下2,2—二甲基噻唑烷4—甲酸及其盐酸盐的快速合成

本文报道了在微波作用下２，２－二甲基噻唑烷－４－甲酸及其盐酸盐的快速合成。     

太阳能直热式海水淡化系统热经济孤立化研究

 为了提高直热式太阳能海水淡化系统的设计与操作,运用热经济孤立化方法,对直热式太阳能海水淡化系统进行分析,获得了系统最优化操作参数。同时讨论了设备使用年限、最高海水温度、进料海水单价对年度化费用的影响。结果表明：当拉格朗日乘子分别为￥4.85/kJ、￥0.59/kJ、￥0.40/kJ、￥0.19/kJ时,系统实现热经济孤立化。此时,闪蒸温度为58.6 ℃,蒸发温度为35 ℃时,年度化费用为￥4 332.81/a。年度化费用随设备使用年限的增加而减小,随最高海水温度的升高而降低,随进料海水单价的升高而增加。     

Performances improvement of eosin Y sensitized solar cells by modifying TiO2 electrode with silane-coupling reagent

Chemical fixing of xanthene dye （eosin Y） on the surface of TiO2 electrode was carried out by modifying the electrode with silane-coupling reagent to obtain stable dye-sensitized TiO2 electrode. Such silane modification can not only evidently enhance the stability of dye-sensitized TiO2 electrode but also improve the energy conversion efficiency of the assembled cells by increasing short-circuit photocurrent （Jsc） and open-circuit photovoltage （Voc）. It was found that the improvements of cell performances differ depending on the composition of the electrolyte. The optimum cell of the cell performance was achieved in the electrolyte with 0.5 mol/L TBAI/0.05 mol/L 12/EC：PC（3：1 w/w）, yielding Jsc of 4.69 mA. cm-2, Voc of 0,595 V, fill factor （FF） of 0.64 and ηof 1,78%, Different spectroscopic techniques including UV-Vis spectra, fluorescence spectra, EIS and dark current measurements were employed to derive reasonable analysis and explanations.     

Fluorescence and sensitization performance of phenylene-vinylene-substituted polythiophene

A new kind of polythiophene derivative, Poly(3-{2-[4-(2-ethylhexyloxy)-phenyl]-vinyl}-2,2′-bithiophene) (PTh), was applied in dye-sensitized solar cell to extend the light response of nanocrystalline TiO2 electrode. UV-vis absorption and fluorescence spectra were employed to investigate the interaction of PTh with nanocrystalline TiO2. The absorption coefficient of the PTh was high in visible part of spec- trum, and the fluorescence emission of the PTh can be efficiently quenched by TiO2 nanoparticles ow- i...     

Solar-driven high temperature radiant cooling

Solar energy is widely used as one of the most important renewable energy. In addition to the growing applications of solar PV and solar water heater, solar cooling is also considered very valuable and the related researches are developing fast because of the synchronism between solar irradiance and building cooling load. Current studies mainly focus on the high temperature solar collector technique and heat-driven cooling technique, while little concern has been paid to the transport process of cooling power. In this paper, the high temperature radiant cooling is studied as an alternative way for transporting cooling power, and the performance of the combination of radiant ceiling and solar cooling is also studied. From simulation and theoretical analysis results, high temperature radiant cooling terminal shows better cooling power transportation ability against conventional air-conditioning terminal, and its thermal comfort is improved. Experiment results indicate that radiant cooling can enhance the chiller’s COP (Coefficient of Performance) by 17% and cooling power regeneration by 50%. According to analysis in this paper, high temperature radiant cooling is proved to be suitable for solar cooling system, and out work can serve as a reference for later system design and promotion. Supported by the National Natural Science Foundation of China (Grant No. 50876064)     

基于控制叶片的太阳帆姿态控制系统建模与仿真

针对由太阳帆薄膜、结构杆、有效载荷和四个控制叶片所组成的太阳帆航天器系统,从物理模型出发,利用欧拉方程建立了姿态动力学模型.对该类太阳帆航天器的系统能控性和稳定性进行分析,并通过数值仿真对太阳帆航天器三轴姿态控制的响应特性和行星际轨道转移过程中姿态控制效果进行研究.研究结果表明,在行星际飞行中利用四个控制叶片来对太阳帆航天器进行三轴姿态控制的方法是可行的.     

基于全概率思想的排球发球技术水平的评价与分析

简要分析了传统的排球发球技术水平评价方法存在的不足,给出了排球发球质量等级划分办法,在此基础上,提出了排球发球技术水平的全概率评价方法.分别用2种方法对中国女排队员在北京奥运会上的发球技术水平进行了评价,并对2种评价结果进行了比较和分析,得出了全概率评价方法优于传统评价方法的结论.定义了发球威力的概念,计算了中国女排队员的发球威力值,并进行了2种评价方法评价结果与威力值的斯皮尔曼等级相关分析,得出全概率评价方法的评价结果与威力值具有较高一致性等结论.