水分子振动态的局域模效应

本文利用水分子的势能面精确研究了Ｈ２Ｏ分子振动局域模态能级，这些势能面较好地解释了Ｈ２Ｏ分子振动态的局域模效应，当伸缩量子数ｎ超过４时，单键伸缩振动态处于局域模振动态，这些局域模态与非局域模态的振动耦合趋近于零，这与实验观测结果一致。     

Ar—HCl分子的振动光谱

本文报道了Ｖａｎ ｃｅｒ Ｗａａｌｓ分子Ａｒ－ＨＣｌ及其同位素分子Ａｒ－Ｈ＾３６Ｃｌ，Ａｒ－ＤＣｌ和Ａｒ－Ｄ＾３７Ｃｌ的振动激发态的能级和波函数的计算结果。通过计算谱带频率与观测数据的比较确定Ａｒ－ＨＣｌ的势能面。     

HCl^＋（X^2П）和HCl^—（X^2Σ^＋）的解析势能函数

采用ａｂ ｉｎｉｔｉｏ ＣＩＤ／ＭＣ－３１１Ｇ方法计算了ＨＣｌ＾＋（Ｘ＾２П）和ＨＣ＾－（Ｘ＾２Σ＾＋）的势能函数值，并根据光谱数据导出了ＨＣｌ＾＋（Ｘ＾２П）的Ｍｕｒｒｅｌｌ－ｓｏｒｂｉｅ势能函数，采用最小二乘法拟合出了ＨＣｌ＾－（Ｘ＾２Σ＾＋）的解析势能函数。     

PuO分子势能函数与垂直电离势的量子化学计算

用ａｂ ｉｎｉｔｉｏ计算得到ＰｕＯ分子基态Ｘ＾５∑＾－，ＰｕＯ＾＋分子离子基态Ｘ＾６∑＾－和ＰｕＯ＾２＋分子离子基态Ｘ＾５∑＾－的势能函数、力学数与光谱数据，并算出ＰｕＯ分子的垂直电离势。     

非线性XY2分子多光子激发的同位素效应

用二次量子化方法计算了Ｈ２Ｏ，Ｄ２Ｏ和Ｔ２Ｏ等ＸＹ２分子的多光子激发，计算所得能谱与实验值一致．详细讨论了跃迁概率的长时间平均值和同位素效应．     

Ar－HCl分子的振动光谱

本文报道了ＶａｎｄｅｒＷａａｌｓ分子Ａｒ－ＨＣｌ及其同位素分子Ａｒ－Ｈ３７Ｃｌ，Ａｒ－ＤＣｌ和Ａｒ－Ｄ３７Ｃｌ的振动激发态的能级和波函数的计算结果．通过计算谱带频率与观测数据的比较确定Ａｒ－ＨＣｌ的势能面．这一势能函数可对ＶａｎｄｅｒＷａａｌｓ分子Ａｒ－ＨＣｌ的分子间振动频率的同位素效应给出合理的解释．     

BN和AlN分子基态与低激发态的势能函数与热力学性质

用密度泛函理论B3LYP方法和6-311+G*基函数计算研究BN和AlN分子基态与低激发态的结构与势能函数,导出了分子的光谱数据.结果表明,BN和AlN分子基态均为X3Σ,基态与低激发态的势能函数均可用Murrell-Sorbie函数来表达.BN分子低激发态a1Σ的绝热激发能为78.85 kJ·mol-1,AlN分子低激发态a1Σ的绝热激发能为111.27 kJ·mol-1.计算固体BN和AlN的平衡能量E和熵S时,近似以气体分子的电子能和振动能代替固体分子的平衡能量E,用电子熵和振动熵代替固体分子的熵.在此近似下,计算得到BN和AlN基态与低激发态固态分子温度与平衡压力的关系式.     

烷基衍生物标准生成热和键裂能的经验计算公式

通过研究与基团Ｘ的诱导效应指数Ｉ间的关系，提出一个方程：（式中：），Ｐ为ＨＸ分子中氢原子的个数，Ｉ为诱导效应指数）。利用上式，计算了一些甲基衍生物ＣＨ３Ｘ（Ｘ＝Ｆ，ＯＨ，Ｃｌ，ＮＨ２，Ｂｒ，ＳＨ，ＰＨ２，ＳｅＨ）的标准生成热，计算结果的平均偏差为１．７ｋＪ·ｍｏｌ－１，同时推导出由和Ｉ计算烷基衍生物标准生成热的方法，计算了３１个烷基衍生物的生成热，计算结果的的平均偏差为３．３ｋＪ·ｍｏｌ－１，还计算了２２个烷基衍生物的键裂能，计算结果的平均偏差为２．０ｋＪ·ｍｏｌ－１。     

用音速确定HFC125的第二维里系数和分子间势能参数

利用ＨＦＣ１２５的音速和非线性最小二乘法中的Ｌｅｖｅｎｂｅｒｇ－Ｍａｒｑｕａｒｄｔ方法，拟合得到一个新的具有更高精度和更广泛用范围的ＨＣＦ１２５第二维里系数计算关联式，可以用于流体其他热物性参数的计算，从第二维里系数和结一音速维里系数及其与分子间势能函数的关系，提出了用第二音速维里系数确定分子间势能模型参数的新方法，并推导出用第二音速维里系数拟合方阱，ＬＪ（６，１２）及Ｋｉｌｈａｒａ等势能模型参数     

水分子振动逆问题研究

在ＨＯＨ角弯曲柔度极大的条件下，计算得到了能完全准确预测Ｄ＿２Ｏ分子简正频率的Ｈ＿２Ｏ分子柔度，并讨论了Ｈ＿２Ｏ分子的简正模式。     

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