具有两个相互无公度调制频率的一维无公度链的电子态性质

采用逐级有理数近似，通过对带宽和波函数的多分形谱ｆ（α＿ｌ）￣α＿ｌ的渐近行为的研究，探讨了一个具有两个相互无公度的调制频率Ｑ＿１和Ｑ＿２的一维无公度电子态模型：ε＿ｎ＝Ｖ＿０［ｃｏｓ（Ｑ＿１ｎ）＋ｃｏｓ（Ｑ＿２ｎ）］，其中Ｑ＿１＝２π／λ和Ｑ＿２＝２π／λ￣２，且，结果表明，除了个别边态的反常行为外，Ｖ＿０＜１．００时的本征态都是扩展态，Ｖ＿０＝１．００时的本征态都是中间态，而Ｖ＿０＞１．００的所有本征态都是局域态，即在Ｖ＿０＝１．００时存在一个金属－绝缘体转变。这种性质与Ａｕｂｒｙ模型十分相似。     

氟哌酸伏安行为的研究

在０．０５ｍｏｌ·Ｌ－１ＮＨ４Ｃｌ溶液中，富集电位－１．１０Ｖ（Ａｇ／ＡｇＣｌ）、富集时间１２０ｓ、扫速１２０ｍＶ·ｓ－１时，氟哌酸出现一吸附伏安还原峰，峰电位为－１．４８Ｖ．用线性扫描与循环伏安法、交流极谱和恒电位库仑法等手段研究体系的伏安行为及电极反应机理．测得扩散系数Ｄ＝９．３８×１０－７ｃｍ２·ｓ－１，电极反应电子数ｎ＝２，电子转移因数α＝０．５１，参与电极反应Ｈ＋数ｘ＇＝１．体系吸附符合Ｆｒｕｍｋｉｎ吸附等温式，吸附因数β＝３．２×１０５，吸引因数α＝１．２，吸附自由能ΔＧ°＝－３１．４ＫＪ·ｍｏｌ－１，实验表明，体系属不可逆吸附波．     

图的第二个最小特征值的界

设Ｇ是ｎ个顶点的简单图，λｎ－１（Ｇ）为Ｇ的第二个最小特征值。Ｇ的非孤立点形成的图记为Ｇ１，Ｖ（Ｇ１）＝ｓ，（３≤ｓ≤ｎ）。本文主要证明了：ａ．若Ｇ１不是完全偶图，则λｎ－１（Ｇ）≤λｓ－１（Ｋ２，ｓ－２＾－ｅ），等式成立＝Ｇ１≌Ｋ２，ｓ－２＾－＾ｅ。其中图Ｋ２，ｓ－２＾－＾ｅ为完全偶图Ｋ２，ｓ－２去掉一边ｅ而得到的图ｂ．若Ｇ１既不是完全偶图，又不是Ｋ２，ｓ－２＾－ｅ，则λｎ－１（Ｇ）＜－√２／２     

一类具有二阶细焦点的二次系统

对如下一类具有二阶细焦点的二次系统进行了研究， ｄｘ／ｄｔ＝－６＋ａｘ＾２， ｄｙ／ｄｔ＝ｘ＋ｌｘ＾２＋ｍｘｙ＋ｎｙ＾２，其中ｗ１＝－２ａｌ－ｍ（ｌ＋ｎ）＝０，ｗ２＝ａ（２ａ＋ｍ）（３ａ－ｍ０［ｎ（ｌ＋ｎ）＾２－ａ＾２（ａｌ＋ｎ）］≠０。证明了当－１＜ｌ／ｎ≤时，系统（１）在０外围     

n维Oppenheim不等式及其应用

设ａ＿ｉ（ｉ＝１，２，３）为三角形ΔＡ＿１Ａ＿２Ａ＿３的边长，Ｓ为ΔＡ＿１Ａ＿２Ａ＿３的面积，λ＿ｊ（ｊ＝１，２，３）为任一组正数．作者将Ｏｐｌｓｏｎｂｅｉｍ三角形不等式推广到ｎ维欧氏空间Ｅ￣ｎ中的ｎ维单形，从而获得了ｎ维单形的Ｏｐｐｅｎｂｅｉｍ不等式这里Ｖ是ｎ维单形Ａ＿１Ａ＿２…Ａ＿（ｎ＋１）的体积，Ｖ＿ｉ为顶点Ａ＿ｉ所对之侧面的面积，λ＿ｉ为任意一组正数．     

r阶导数为ΦBV中函数的Fourier级数收敛速度估计

对于周期为２π并且ｒ阶导数为φ－有界变差函数,我们证明了：│Ｓｎ（ｆ,ｘ）－ｆ（ｘ）－ｓｉｎｒ／２π／πｎ＾ｒ（ｆＲ＾（ｒ）（ｘ）－ｆＬ＾（ｒ）（ｘ））│≤３／ｎ＾ｒ＋１Σ↑ｎ↓ｋ＝１Ｖφ（ψｘ,［０,π／ｋ］）＋２│ｓｉｎｒ／２π│／πｎ＾ｒ＋１│ｆＲ＾（ｒ）（ｘ）－（ｆＬ＾（ｒ）（ｘ）│,其中ｆ∈φＢＶ∩Ｖｒ。     

中华鳖幼鳖的能量代谢（I）：水中呼吸及其与温度,…

测定了饥饿状态下中华鳖（Ｔｒｉｏｎｙｘ ｓｉｎｅｎｓｉｓ）幼鳖在水中的呼吸代谢及其与温度、体重的关系，体重１６～１５０ｇ的幼鳖在水温２８℃下的个体氧率Ｒ可表示为：１ｇ（Ｒ／ｍＬ．ｈ＾－１）＝０．６３１４ｇ（Ｗ／ｇ）－１．０５４９（Ｗ为个体湿重）；ｒ＝０．９１，ｎ＝２６，Ｐ＜０．００１，这时幼鳖的单位体重耗率Ｖ与体重呈加下负相关关系：Ｖ＝８８．１２５４Ｗ＾－．３６８６；ｒ＝０．８０，ｎ＝２６，Ｐ＜０     

6种药用植物的染色体研究

对山东４科６种药用植物进行了染色体数目和核型研究，结果表明，毛曼陀曼Ｋ（２ｎ）＝２４＝２４ｍ，“１Ａ”核型；紫花曼陀罗，Ｋ（２ｎ）＝２４＝１４ｍ＋１０ｓｍ“２Ｂ”牛龙牛儿苗，Ｋ（２ｎ）＝１４＝１２ｍ＋２ｓｍ“１Ａ”核型，鸡眼草，Ｋ（２ｎ）＝２２＝１４ｍ＋８ｓｍ，“２Ａ”核型，委陵菜，Ｋ（２ｎ）＝１４＝１４ｍ，“１Ａ”核型；地榆，Ｋ（２ｎ）＝５４＝５４ｍ，“１Ｂ”核型，其中４种为首次报道。     

高维情形的Vasic定理及其应用

给出了高维情形的Ｖａｓｉｃ定理：定理１设αｉ（ｉ＝１，２，…，ｎ＋１）为ｎ维单形Ω之顶点角，则对任一组实数ｘｉ＞０（ｉ＝１，２，…，ｎ＋１），有本文还给出了它的一些应用．     

Poisson分布的特征

证明了满足ＥＸ＝ＤＸ〈∞的具有非退化分布的母体Ｘ服从Ｐｏｉｓｓｏ７分布的充要条件是Ｔ２－Ｔ１关于Ｔ１有常回归,其中Ｔ１＝Ｘ＾－＝１／ｎΣｉ＝１ ｎ Ｘｉ,Ｔ２＝１／（ｎ－１）Σｉ＝１ ｎ（Ｘｉ－Ｘ＾－）＾２分别为子样均值和子样方差。     

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     

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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