伏安法测电阻实验数据处理方法的研究

运用三种数据处理方法对伏安法测电阻实验所得实验数据进行了处理，对比其结果表明，对于同一组实验数据，不同的数据处理方法所得结果明显不同。因此，对实验数据处理方法的选择是实验中应重视的问题。实验者应根据实验目的要求，选择相应的数据处理方法。     

拉伸法测金属杨氏模量实验的改进

传统的拉伸法测金属杨氏模量实验、实验过程不够科学、实验仪器不便调节等缺点，方法和过程适当地进行完善，克服了以上缺点，存在着实验条件难以保证、实验方法不够完善、该文用游标卡尺对实验装置进行改进，并对实验提高了实验精度。     

虚拟仪器技术在汽车测试技术实验中的应用

阐述了利用虚拟仪器编程软件Labview开展汽车测试技术课程实验的方法，分析了使用该方法进行教学实验的特点。该方法与传统实验方法相比，能够节约实验设备硬件的投入，加深学生对传感器转换原理、测试系统组成原理等知识的理解，提高学生的实验兴趣和主动性。     

乙醇酸催化法制乙醚实验改进

报道了乙醇酸催化制取乙醚的改进方法，该方法减少了实验步骤，降低了实验费用，缩短了实验时间，提高了乙醇的产率。     

NK细胞活性检测方法改进的体会

免疫学实验是学生了解免疫学相关知识和技能最直接有效的手段，如何在有限的时间内让学生了解到更多的实验知识及掌握更多的实验技能，对实验教学方法不断改进显得非常重要。本人结合自身的实验教学经验，对MTT比色法检测NK细胞活性的实验方法进行了改进，取到了满意的实验教学效果，并从该实验方法的改进中体会到，教学要不拘泥于书本，要敢于开拓创新；做好实验前的准备是保证实验教学成功的关键；学生做好实验前的预习是实验成功的保障。     

环己醇制备己二酸的实验改进

本对环己醇用高锰酸钾氧化法制备己二酸的实验步骤提出了改进措施，使实验过程简化，实验时间缩短，以及实验产率提高。改进的实验方法优于献中实验方法。     

加强学生分组实验 提高学生实验效果

本文从五个方面分析了加强学生分组实验的方法，以切实搞好学生分组实验，进一步提高实验的效果，达到实验目的。     

两种重铬酸钾测铁实验方法的比较

通过两种重铬酸钾测铁的实验，建立了两种实验方法比较的实验，使学生学会运用数据检验的方法，拓宽分析化学实验的应用面。     

RC积分电路实验研究

通过对RC积分电路响应的分析研究，以实验的方法加以验证，最后总结出了进行实验时应注意的问题，及实验中培养学生科学实验方法。     

信息技术在物理实验中的应用

通过更新实验仪器，改革实验教材和实验方法，培养学生更大的学习兴趣。信息技术的发展在物理实验中广泛应用，提高了学习效率，实验的效果更加明显。     

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.     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

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