一类非经典反应扩散方程的强解的长期行为

考虑了一类非经典反应扩散方程整体强解的长期行为,利用ω-极限紧方法在空间D（A）=H^2（Ω）∩H0^1（Ω）中得到了全局吸引子A的存在性,A在D（A）中按D（A）的范数吸引D（A）中的任意有界集．     

1-苯基-3-甲基-4-苯甲酰基吡唑酮-5在硝酸稀释剂中对Pb(Ⅱ)萃取的热动力学研究

研究了1-苯基-3-甲基-4-苯甲酰基吡唑酮-5（HPMBP）从硝酸介质中对Pb2＋的萃取,测定了萃取反应抖的反应热△rHm^θ;运用斜率法得出萃合物的组成为Pb（PMBP）2;得到了萃取反应平衡方程式Pb^2＋＋2HPMBP（o）=Pb（PMBP）2＋2H^＋;得出了反应的速率方程ν=K∫[HPMP]（o）[H^＋]^2[Pb^2＋]-Kb[HPMBP]（o）^-1[H^＋]^-2[Pb^2＋]（o）.     

一类半线性椭圆问题多解的存在性

利用了3个临界点定理,研究了一类半线性椭圆方程：-△u＋a（x）u=f（x,u）,x∈Ω力,在H0^1（Ω）中至少存在两个非平凡解,其中Ω为R^N中的光滑有界区域,N≥3,a（x）〉0,并且满足a（x）∈L^N/2（Ω）．     

1-苯基-3-甲基-4-苯甲酰基吡唑酮-5萃取Pr(Ⅲ)的热动力学研究

研究了以CHCl3为溶剂HPMBP革取Pr（Ⅲ）的热动力学性质,求出萃合物的组成为Pr（PMBP）3;得出萃取平衡方程式为：Pr^3＋＋3HPMBP（o）=Pr（PMBP）3（o）＋3H^＋;反应的速率方程式为υ=kf[HPMBP]（o）^2,[H^＋]^-1[Pr^3＋]-kb[HPMBP-]（o）^-1[H^＋]^2[Pr^3＋]（o）用微量量热法测定了HPMBP萃取Pr（Ⅲ）的热效应,进而得出HPMBP萃取Pr（Ⅲ）的反应热．     

一族解析函数的系数不等式和卷积性质

设σ∈R,0≤a,0≤β〈1,0〈μ,若函数f（z）∈A,满足条件｜arg[z（H^σf（z））＇/H^σf（z）＋（1-α）z/1-z -β]｜〈μπ/2,z∈D,则称f（z）属于A（σ,α,β,μ）,其中H^σf（z）=z＋Σ∞k-aαnz^n,文[1]讨论了函数族A（σ,α,β,μ）的极值问题,主要给出了该函数族的系数问题和其子类的卷积性质．     

一类渐近线性四阶椭圆方程解的存在性

利用山路引理和截断技巧，并根据强极大值定理讨论了一类渐近线性四阶椭圆方程Diriehlet问题在空间E=H^2（Ω）∩H0^1（Ω）中的一正一负非平凡弱解的存在性问题。     

带有临界Sobolev和Hardy项的半线性椭圆方程的解（I）

设Ω包含R^N是有界光滑区域，0 ∈Ω ,N≥3,2^＊：=2N/N-2,0≤s〈2,2^＊（s）：=2（N-s）/N-2,2〈r〈2^＊（s）．对于满足一定条件的参数λ和μ，证明了带Diriehlet边界条件的奇异椭圆问题-△u-μu/｜x｜^2=｜u｜^2＋-2u＋λ｜u｜^r-2/｜x｜^1u的一些重要性质．     

带有临界Sobolev-Hardy指标椭圆问题的一个全局紧性结果

设Ω属于R^N是有界光滑区域，0∈Ω，N≥3，0≤s〈2，2＊（s）：=2（N-s）/N-2，2≤q〈2＊：=2＊（0）=2N/N-2，μ≥0，λ∈R．运用变分方法和分析技巧，证明了带有Dirichlet边界条件的奇异临界问题-△u-μu/｜x｜^2=｜u｜^2＊（s）-2/｜x｜^su＋λ｜u｜^q-2u的一个全局紧性结果．     

具热效应的半导体方程组的混合初边值问题

讨论考虑热效应时半导体器件中电子电流、空穴电流和静电位等载流子运动的数学模型,这是一个非线性抛物－椭圆型耦合偏微分方程组的混合边值问题。在假定初值n0(x),po(x)∈L ^∞（Ω）,边值n^-,p^-, θ^-∈H^1(Ω）并L ^∞（Ω）,φ^-∈W^1,3(Ω）并L＋^∞（Ω）等正则性条件下,利用先验估计、紧性原理和Schauder不动点定理,证明了弱解的整体存在性。     

一类奇异半线性椭圆型问题解的存在性的注记

证明了若线性椭圆型问题-△u = k（x），u 〉 0, x ∈Ω, u │аΩ = 0存在解v ∈ C^2＋α（Ω） ∩ C（Ω￣），则半线性椭圆型问题-△u = k（x）g（u），u〉0，x∈ Ω, u │аΩ = 0存在解u∈C^2＋α（Ω） ∩ C（Ω￣）．这里，Ω是R^N中的有界光滑区域，k∈C^α（Ω）非负、非平凡，g∈C^1（（0，∞），（0，∞）），g在（0，∞）有上界且lin s→0＋ g（s）=∞．     

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     

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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Brief Introduction to “Journal of Jilin University( Science Edition) ”

<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has