摘要：由于染料敏化太阳能电池(DSSC)由于成本低和光电转化效率高而引起诸多学者的兴趣.目前纯有机染料分子的合成已经受到特别的关注.本文主要针对染料敏化太阳能电池中染料分子设计方面展开论述,介绍了DSSC的组成、原理、设计理念以及对未来的展望.%Dye-sensitized solar cells (DSSC) have attracted considerable attention in recent years as they offer the possibility of low-cost and light-to-electricity conversion efficiency. Special attention has been paid to the synthesis of these pure organic dyes. This Review focuses on recent advances in molecular design of metal-free organic dyes. The basic construction and the photovoltaic principles of DSSC are introduced. In addition, the prospects of the DSSC are also summarized.
摘要：A progressive damage method of predicting the strength of 2-D woven fabric composite laminate is established in the paper, which is based on the theory of bidirectional ply. A parametric strength prediction programme based on progressive damage method for 2-D woven fabric composite laminate has been developed with Ansys Parameter Design Language on the ANSYS software. The strength of 2-D woven fabric composite laminate with two kinds of hole diameter is predicted. The damage progressive process is simulated by the method, and a good agreement is found between data obtained from this study and the experiment.%将基于单层板理论的逐渐累积损伤强度预测方法推广用于含孔二维机织复合材料层合板的强度预测,建立了含孔二维机织复合材料层合板的逐渐累积损伤强度预测方法.并在ANSYS软件平台上开发了相应的参数化二维机织复合材料含孔层合板逐渐累积损伤强度预测程序,对两种孔径两种铺层的含孔二维机织复合材料层合板的强度进行预测,并对其损伤扩展规律进行了分析.经与试验结果对比表明本文所建立的强度预测方法效果良好.
摘要：对FGH95粉末高温合金标准CT试样在700℃下的蠕变裂纹扩展过程进行了有限元数值模拟研究.FGH95合金假设为弹性-蠕变体,蠕变变形采用Norton模型描述.蠕变裂纹扩展模拟时考虑了两种裂纹扩展速率,分别为3.25×10-2mm/h(快速裂纹扩展)和6.5×10-4mm/h(慢速裂纹扩展).数值模拟结果表明:FGH95合金在700℃下发生蠕变裂纹扩展时,弹性变形引起的标准CT试样加载线位移Vc在总位移中起主导作用,蠕变变形引起的加载线位移Vc很小,加载线位移率比值(·Vc)/(·V)远小于1,蠕变变形被限制在临近裂纹扩展路径的细长条带状区域内,裂纹尖端没有发生大范围蠕变变形.上述结果说明FGH95合金在700℃下为蠕变脆性材料,应力强度因子K可作为FGH95合金高温疲劳裂纹扩展的有效驱动力参数.%Creep-crack growth in a standard compact-tension specimen has been at 700℃ simulated for an elastic/creeping material, FGH95 powder metallurgy superalloy using the finite element code. The Norton power-law model was used for describing the creep behavior of FGH95. In the simulation, two cases of crack growth rates, relatively fast (3.25x10-2mm/h) and slow (6.5× 10ˉ4mm/h), were considered. The numerical simulation result shows that, in the process of crack growth of FGH95 at 700°C, the load-line deflection due to elasticity(Ve)dominates the total deflection(V), with only small part due to creep ( Vc). For both cases, the ratio of the load-line deflection rate due to creep (Vc) to the total deflection rate (V) was found to be well below 1.0,i.e., Vc/Ve=1.O, and the creep zone was limited in a narrow banding area without large scale creep deformation near the crack tip.The result suggests that the crack growth behavior of FGH95 at 700℃ can be classified as creep-brittle, and stress intensity factor K will be the candidate parameter for crack growth driving force of FGH95 at elevated temperature.
摘要：氨基酸化学修饰电极因其电化学响应大,稳定性好且制备简单,引起了人们广泛的研究兴趣,发展非常迅速.本文介绍了近年来氨基酸化学修饰电极的制备及其应用情况,并对氨基酸化学修饰电板的发展趋势作了展望.%Amino acids chemical modified electrodes have received great attention in recent years as they have some merits such as fast response, good stability, low cost and fabrication simplicity. This paper introduced the recent research progress including its preparation methods and applications. the Development prospect of amino acids chemical modified electrode was also disscussed.
摘要：Through the City water quality monitoring data analysis of Erlong Lake in SiPing in recent years, the Erlong Lake water quality category and eutrophication was evaluated, and find out the eutrophication trend.parctical control measures and suggestions was put forward for relevant departments to proide reference for decision-marking.%通过对四平市二龙湖近十年水质监测资料分析,评价了二龙湖水质类别和富营养化状态,并找出其富营养化变化趋势,针对富营养化产生的原因,提出切实可行的污染防治措施与建议,为有关部门决策提供参考依据.
