运用晶体非线性光学效应的阴离子基因理论探索新型紫外非线性 …

在运用晶体非线性光学效应的阴离子基团理论,系统研究硼酸盐晶体的硼氧基团结构及其在空间的排列与它们的非线性光学效应关系的基础上,发现了ＬｉＢ３Ｏ５（ＬＢＯ）,ＣｓＢ３Ｏ５（ＣＢＯ）,ＫＢｅ２ＢＯ３Ｆ２（ＫＢＢＦ）,Ｓｒ２Ｂｅ２Ｂ２Ｏ７（ＳＢＢＯ）,Ｂａ２Ｂｅ２Ｂ２Ｏ７（ＴＢＯ）,ＢａＡｌ２Ｂ２Ｏ７（ＢＡＢＯ）,Ｋ２Ａｌ２Ｂ２Ｏ７（ＫＡＢＯ）等多种线性和非线性光学性能的非线性光学晶体。ＬＢＯ和ＣＢＯ晶     

对我国发展BtoB的理性思考

随着国际上ＢｔｏＢ电子商务模式的降温和ＢｔｏＢ的兴起,国内许多企业在没有考虑中国国情的情况下,抛弃ＢｔｏＢ,盲目照搬国外的ＢｔｏＢ 模式．ＢｔｏＢ和ＢｔｏＢ 两种电子商务模式并非完全割裂,ＢｔｏＢ的发展依赖于国家和企业内部条件的发展和完善．在我国,随着各类条件的成熟,ＢｔｏＢ模式终将发展成为ＢｔｏＢｔｏＲｔｏＣ 模式．     

东湖细菌生理群间的相关性和优势生理群的分析

研究了武汉东湖异养菌（ＨＢ）及７种细菌生理类群（产淀粉酶细菌（ＡＢ）、产蛋白酶细菌（ＰＢ）、产脂肪酶细菌（ＬＢ）、有机磷细菌（ＯＰＢ）、无机磷细菌（ＩＰＢ）、硝化细菌（ＮＢ）及反硝化细菌（ＤＮＢ））间的相关性。统计分析表明,ＨＢ、ＡＢ、ＬＢ、ＰＢ、ＤＮＢ彼此呈正相关,而这几种类群与ＮＢ、ＩＰＢ、ＯＰＢ呈负相关。根据异养性细菌生理群与ＨＢ比值的百分率,ＬＢ可谓东湖春季优势生理群,ＡＢ为秋季优势生理群。     

两种杂交群（BALB／c♂×不同♀系）与BALB／c小鼠繁殖性能及单抗腹水产量的比较

对两种杂交群（ＢＡＬＢ／ｃ♂×ＫＭ，ＢＡＬＢ／ｃ♂×ＬＡＣＡ♀）的繁殖能力及制备单抗腹水的产量同ＢＡＬＢ／ｃ近交系进行比较。实验表明，两杂交群的各项繁殖指标均优于ＢＡＬＢ／ｃ，总离乳鼠数分别为ＢＡＬＢ／ｃ的１．９８、２．０７倍，接种人肺炎支原体Ｆ８瘤细胞，ｋＣＦ１（ＢＡＬＢ／ｃ×ＫＭＦ１小鼠）的腹水产量为ＢＡＬＢ／ｃ的２．５倍，效价相同；制备六种单抗腹水ＬＣＦ１（ＢＡＬＢ／ｃ×ＬＡＣＡＦ１）的产量均优于ＢＡＬＢ／ｃ，分别为ＢＡＬＢ／ｃ的１．１７～２．８８倍，除Ｅ１０抗体滴度低外，其它各抗体效价相同或接近于ＢＡＬＢ／Ｃ。     

再论正定Hermite矩阵间的半正定关系

文证明了两个交换ｎ阶正定Ｈｅｒｍｉｔｅ矩阵Ａ≥Ｂ的半正定Ｈｅｒｍｉｔｅ关系：１４（Ａ－Ｂ）２Ａ－１≤１２（Ａ＋Ｂ）－２ＡＢ（Ａ＋Ｂ）－１≤１４（Ａ－Ｂ）２Ｂ－１,１２（Ａ１２－Ｂ１２）２（Ａ－１Ｂ）１２≤（ＡＢ）１２－２ＡＢ（Ａ＋Ｂ）－１≤１２（Ａ１２－Ｂ１２）２（ＡＢ－１）     

环上矩阵的Drazin逆

设Ｒ是一交换环,Ａ∈Ｍｎ（Ｒ）,定义Ａ的指数和Ｄｒａｚｉｎ逆Ａ＾Ｄ,假设Ａｋ＝ＰＢＱ,ｋ＝ｉｎｄ（Ａ）,其中Ｐ,Ｂ,Ｑ∈Ｍｎ（Ｒ）,存在Ｐ’,Ｑ’∈Ｍｎ（Ｒ）,使得Ｐ‘ＰＢ＝Ｂ＝ＢＱＱ’若Ｂ有群逆,则Ａ有Ｄｒａｚｉｎ逆当且仅当ＢＢ＾＃ＱＡＰＢ＋Ｉ－ＢＢ＾＃可能,此时有Ａ＾Ｄ＝ＰＢ（ＢＢ＾＃ＱＡＰＢ＋Ｉ－ＢＢ＾＃）＾－１Ｑ。     

小麦B染色体组双端体光合性能的初步研究

与对照ＣＫ相比，各供试Ｂ染色体组双端体材料的旗叶光合性能表现不同，多数Ｂ染色体长臂、２ＢＳ、７ＢＳ对叶绿素含量具有正效应，３ＢＬ、４ＢＳ、５ＢＳ具有负效应，在光合功能上，３ＢＬ、１ＢＳ、４ＢＳ、５ＢＳ表现为负效应，５ＢＬ、６ＢＬ、７ＢＬ、２ＢＳ、３ＢＳ、７ＢＳ则表现为正效应，不同部位染色体臂缺失对叶绿素含量和光合速率的不同效应，可能是由于染色体臂缺失后，光合机构和光合功能相关的基因结构与表达发生改变所致。     

n维BBM方程的解

获得了ＢＢＭ方程的精确解，为讨论更广泛的Ｂｕｒｇｅｒｓ─ＢＢＭ方程奠定了基础．     

PbO-Bi2O3-B2O3系统玻璃中B3+离子的配位状态

利用红外光谱和喇曼光谱研究了ＰｂＯ－Ｂｉ２Ｏ３－Ｂ２Ｏ３系统玻璃结构中Ｂ＾３＋离子的配位状态,研究结果表明：当Ｂ２Ｏ３含量较低时,获得的重金属氧化物玻璃结构中的Ｂ＾３＋离子以单个［ＢＯ３］三角体形式存在,随Ｂ２Ｏ３含量增加,部分［ＢＯ３］三角体转变成［ＢＯ３］三角体转变成［ＢＯ４］四面体;当Ｂ２Ｏ３含量增加到一定程度时,通过［ＢＯ３］三角体与［ＢＯ４］四面体之间的桥氧离子的联接而形成含［ＢＯ３］三     

几个Bezier,有理Bezier曲线性质的算子化证明

利用Ｂｅｚｉｅｒ、有理Ｂｅｚｉｅｒ曲线的算子表示,非常简捷地证明了Ｂｅｚｉｅｒ曲线和有理Ｂｅｚｉｅｒ曲线的分段性和包络性心的方法很容易推广到Ｂｅｚｉｅｒ、有理Ｂｅｚｉｅｒ曲面上。     

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