太阳电池伏安特性测试仪的研制

阐述了实验室测量太阳电池参数的方法、条件．设计了一种可调电位差补偿测试线路．另外,结合温度对太阳电池性能的影响,研制了测试系统中的温控装置．测试结果表明该装置能满足对高效硅太阳电池测试的要求．     

LD 温控装置设计与实验研究

研究了一个实用化的ＬＤ温度控制装置，利用高精度宽温温度传感器、双向控制的半导体致冷器及自动温控电路，通过单片机实行多功能智能化控制．该装置兼有实时温度检测功能，实验结果表明装置能很好地保证ＬＤ的工作环境．     

LD温控装置设计与实验研究

研究了一个实用化的ＬＤ温度控制装置，利用高精度宽温温度传感器，双向控制的半导体致冷器及自动温控电路，通过单片机实行多功能智能化控制，该装置瘘有实时温度检测功能，实验结果表明装置能很好地保证ＬＤ的的工作环境。     

半导体制冷元件特性参数测量及选用

提出了一种操作简便、精度好、可靠性高的半导体制冷元件特性参数测试方法，设计了专用实验装置，通过试验对不同型号半导体制冷元件的特性参数进行了对比分析．进一步将这些元件分别用于小型半导体冰箱进行制冷性能测试，并根据实验和理论分析结果提出了进一步提高半导体制冷装置效率的有效途径．     

太阳电池特性实验装置的设计与制作

伏安特性曲线是太阳能电池品质的重要参数,论文完成了太阳电池伏安特性曲线测量装置的设计与制作。通过实验装置可以获得太阳电池伏安特性曲线,进而得到太阳电池的各项参数和性能指标,实验装置可以用于大中专院校的大面积实验教学。     

LD 泵浦 Nd : YLF 激光器研究

报道了半导体激光器纵向端面泵浦Ｎｄ：ＹＬＦ激光器的实施方法和实验结果。自行设计制作了ＬＤ自动温控电路和保护电路。在增益介质Ｎｄ：ＹＬＦ长度仅为０．５６ｍｍ时，获得波长为１．０５３μｍ，线偏振激光输出１１ｍＷ，光┐光转换效率约为４％。     

有机/无机杂化太阳电池的研究述评

有机/无机杂化太阳电池综合了半导性聚合物和无机半导体纳米材料的优点,理论效率高,成为人们研究的热点。介绍了有机/无机杂化太阳电池研究背景、结构及工作机理,从半导性聚合物给体材料、无机半导体受体材料及相界面修饰材料的角度对杂化太阳电池的发展进行了讨论,展望了有机/无机杂化太阳电池的未来发展趋势。     

用于光频标半导体激光器温度控制电路的设计

半导体激光频标的核心是半导体激光器,其输出激光的线宽与稳定性是影响频标性能指标的重要因素之一。半导体激光器对工作温度很敏感,需要有恒定温度保证半导体激光器工作稳定。本文在借鉴常用的一些温控电路的基础上,给出了一种实用的控制精度较高的温控电路设计,实现了对激光器工作温度的控制。并对整个电路做出了实验仿真和测试,系统控温精度达到0.01℃。     

光纤气体传感器光源温控问题的研究

光谱吸收型光纤气体传感器中,利用气体分子的吸收光谱,采用分布反馈式半导体激光器(DFB LD)作为光源,使光源输出中心波长精确对准气体的吸收峰,从而来检测出气体的浓度.而要使测量准确,光源的温控非常重要.提出了一种光源两级温控的思想:外壳温控和结温控制,并设计了温控电路,温控实验证明了两级温控的有效性.     

纳米材料在太阳电池中的应用

对太阳电池纳米材料研究进展进行了综述，简要介绍了半导体和多元化合物纳米材料、复合纳米材料，导电聚合物-纳米复合材料以及染料敏化纳米复合材料的在太阳电池中的应用以及这些纳米材料的国内外研究现状。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with