利用光核反应产生几种缺中子核素

利用２００ＭｅＶ电子直线加速器产生的轫致辐射束诱发（γ，ｎ）、（γ，２ｎ）、（γ，αｎ）三种光核反应，得到了１１Ｃ、１５Ｏ、１８Ｆ、２２Ｎａ、６１Ｃｕ、６２Ｃｕ、６４Ｃｕ等七种核素，推算了饱和活度和Ｃ与Ｆ的探测限，讨论了在该加速器上开展光子活化分析的可行性     

真空钎焊不锈钢接头的钎缝组织和相组成特征

用金相试验、Ｘ射线衍射物相分析和电子探针分析方法,系统地研究了４种镍基钎料钎焊１Ｃｒ１８Ｎｉ９Ｔｉ的钎缝组织特征和相组成及其随热处理时间的变化规律。研究结果表明,用ＢＮｉ１ａ和ＢＮｉ２钎料钎焊（１１２０℃,１０ｍｉｎ）的缝宽为０．１０ｍｍ的钎缝由αＮｉ、Ｎｉ５Ｓｉ２,ＣｒＢ和Ｆｅ４．５Ｎｉ１８．５Ｂ６组成,近缝区扩散层由αＦｅ,γＦｅ和Ｆｅ２Ｂ组成。用ＢＮｉ５钎料钎焊（１１７５℃,１０ｍｉｎ）的缝宽为０．０５ｍｍ的钎缝由αＮｉ,Ｎｉ５Ｓｉ２和Ｎｉ１６Ｃｒ６Ｓｉ７组成。用ＢＮｉ７钎料钎焊（１０５０℃,１０ｍｉｎ）的缝宽为０．０５ｍｍ的钎缝由αＮｉ,Ｎｉ２Ｐ和（Ｆｅ,Ｎｉ）３Ｐ组成。     

陶瓷刀具切削不锈钢的切削性能及其失效机理分析

考察了Ｓｉ３Ｎ４基和Ｔｉ（ＣＮ）基两种陶瓷刀具切削１Ｃｒ１８Ｎｉ９Ｔｉ不锈钢的耐磨性能，对磨损表面进行了观察和分析，结果表明：ＦＤ０３在进刀量为０．１ｍｍ时，磨损值随切速变化比较稳定，在切速１．６ｍ／ｓ时出现最小磨损。进刀量为０．４ｍｍ时，磨损值出现跳跃，ＦＤ０３的主要磨损机制为微崩和粘着剥落；ＦＤ２２在两种进刀量条件下，出现了最佳切削速度（２．２ｍ／ｓ），其主要磨损机制是高温引起的陶瓷粘结剂的熔化导致粘着剥落。     

远红外激光中双光子拉曼跃迁的相互增强

利用Ｆ－Ｐ干涉仪和迈克尔逊干涉仪对光泵ＮＨ＿３分子远红外激光的频谱特性进行了研究，证实在ＣＯ＿２－９Ｒ（１６）泵浦ＮＨ＿３分子时，产生双光子拉曼跃迁辐射；随着ＮＨ＿３工作压强的增加，双光子辐射相互作用增强，频谱展宽．     

衍射模型对非晶态Fe－Co合金适用的温区

研究了非晶态合金（Ｆｅ（１－ｘ）Ｃｏｘ）８２Ｃｕ０．４Ｓｉ４．４Ｂ１３．２（ｘ＝０．０２，０．０５，０．１０，０．１５）的电阻率和温度之间关系，样品的德拜温度在３５０～５３０Ｋ之间，在１１Ｋ（Ｔ＜１００Ｋ和２００Ｋ以上的温区，电阻率分别与温度平方户和温度Ｔ成线性关系，在１１Ｋ＜Ｋ２００Ｋ的温区内，样品的导电机制可用衍射模型描述．     

利用^99mTc直接法标记单克隆抗体及其HPLC分析

比较了２－巯基乙醇（２－ＭＥ）、二硫苏糖醇（ＤＴＴ）和抗坏血酸（ＡＡ）做为抗体还原剂进行９９ｍＴｃ直接标记ＩｇＧ的结果．以ＤＴＴ做为抗体还原剂进行了９９ｍＴｃ标记单克隆抗体３Ｈ１１及其Ｆａｂ片段研究．建立了分析鉴定９９ｍＴｃ标记抗体的ＨＰＬＣ方法．采用ＴＳＫ４０００ＳＷ为色谱性（１３μｍ,７．５ｍｍ×３００ｍｍ）和０．１ｍｏｌ／ＬＰＢＳ（ｐＨ７．０）为流动相,同时进行紫外检测和放射性检测,可快速地同时测定样品的蛋白质含量和标记率．     

Cr（Ⅲ）等过渡元素离子对过氧化氢分解的催化作用研究

本文研究对Ｃｒ（Ⅲ）、Ｍｎ（Ⅱ）、Ｆｅ（Ⅲ）、Ｃｏ（Ⅱ）、Ｎｉ（Ⅱ）对Ｈ２Ｏ２分解的催化活性，结果表明在ＰＨ值为１１．０时，催化顺序为Ｃｏ（Ⅱ）＞Ｍｎ（Ⅱ）＞Ｎｉ（Ⅱ）＞Ｃｒ（Ⅲ）＞Ｆｅ（Ⅲ）；拟合了温度影响的回归方程；发现了在本文条件下，这些离子在相当小的浓度区域对Ｈ２Ｏ２有一定稳定作用。     

真空钎焊不锈钢接头的钎缝组织和相组成特征

用金相试验,Ｘ射线衍射物相分析和电子探针分析方法,系统地研究了４种镍基钎料钎焊１Ｃｒ１８Ｎｉ９Ｔｉ的钎缝组织特征和相组成及其随热处理时间的变化规律,研究结果表明,用ＢＮｉ－１ａ和ＢＮｉ－２钎料钎料（１１２０℃,１０ｍｉｎ）的缝宽为０．１０ｍｍ的钎缝由αＮｉ５Ｓｉ２,ＣｒＢ和Ｆｅ４．５Ｎｉ１８．５Ｂ６组成,近缝区扩散层由α－Ｆｅ,γ－Ｆｅ和Ｆｅ２Ｂ组成,用ＢＮｉ－５钎料钎焊（１１７５℃,１０ｍｉｎ）     

BaFCl:Eu~(2 )的正电子湮没谱研究

利用正电子湮没谱研究了不同离子数（Ｆ）／离子数（Ｃｌ）比ＢａＦＣｌ：Ｅｕ２＋系列粉末样品．实验结果表明：当晶体中的离子数（Ｆ）／离子数（Ｃｌ）＜１时，可以有效地产生Ｆ离子空位缺陷，当离子数（Ｆ）／离子数（Ｃｌ）比值在０．９２附近的空位缺陷浓度最大．     

带有CGL：B：C的大面积a－Si：H太阳电池的研制

报导了在Ｐ／Ｉ界面引入ＣＧＬ：Ｂ：Ｃ＊缓冲层对大面积（２７９０ｃｍ２）单结集成Ｐ－Ｉ－Ｎ型。ａ－ＳＩ：Ｈ太阳电池性能影响的研究结果．实验发现：带有ＣＧＬ：Ｂ：Ｃ层的ａ－ＳＩ：Ｈ太阳电池性能的提高主要是填充因子ＦＦ的增加所导致，实验所得电池的ＦＦ平均达６０．３３％，平均有效面积转换效率ＦＦ达６．０％，分别比目前的生产水平（ＦＦ＝５３．９％，ＥＦ＝５３％）提高了１１．９９％和１３．２％．最后，依据建立的电池能带模型，从理论上解释了引入ＣＧＬ：Ｂ：Ｃ后电池性能得以提高的原因．     

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