三元混晶中的弱耦合磁极化子

本文研究了三元混晶中弱耦合磁极化子的性质,导出了磁场中三元混晶光学声子与电子的互作用哈密顿量,计算了磁极化子回旋频率、回旋质量和自陷能与混晶组份及磁场的关系,在零磁场(B=0T)下,其结果与裸极化子的情况相同;在组分X=0和X=1时,结果与相应的二元晶体中磁极化子的情形相同.     

零温极性－极性晶体中界面磁极化子的性质

计入电子与纵光学（ＬＯ）声子和界面光学（ＩＯ）声子的互作用，进一步研究了界面磁极化子的性质，并给出了磁极化子的能级，重整化回旋质量和自陷能的表达式．结果表明，重整化回旋质量也依赖于纵向量子态和磁场强度；而自陷能也与横向量子态和磁场强度有关．     

三元混晶中电子极化势与极化电荷

本文计及双支纵光学声子模的作用，采用微扰法导出了极性三元混晶Ａ＿ｘＢ＿（１－ｘ）Ｃ中极化子的二级近似波函数，进一步计算了电子的极化势和极化电荷密度．数值计算了混晶Ａｌ＿ｘＧａ＿（１－ｘ）Ａｓ和ＺｎＴｅ＿ｘＳｅ＿（１－ｘ）中极化势与极化电荷密度对组分ｘ的依赖关系，并对结果进行了讨论．     

双模型三元混晶的界面极化子

采用ＥＰＭＡ近似法,研究了双模型三元混晶界面极化子的性质,计算了ＺｎＳｘＳｅ１－ｘ（ＧａＡｓ）和ＡｌＧａ１－ｘＡｓ（ＧａＳｂ）材料中界面光声子与电子的耦合随ｘ的变化。结果表明,在强电场作用下,界面光声子与电子的耦合加强;体光声子与电子的耦合在ｘ的某一值处存在极小值,界面光声子与电子的耦合随ｘ的变化则较复杂。     

零温极性—极性晶体中界面磁极化子的性质

计入电子与纵光学（ＬＯ）声子和界面光学（ＩＯ）声子的互作用，进一步研究了界面磁极化子的性质，并给出了磁极化子的能级，重整化回旋质量和自陷能的表达式。结果表明，重整化回旋质量也依赖于纵向量子态和磁场强度，而自陷能也与横向量子态和磁场强度有关。     

声子之间相互作用对慢速运动的二维磁极化子性质的影响

研究了极性晶体中电子与表面光学声子耦合弱的二维磁极化子的性质。采用改进的线性组合算符法及微扰法导出了极性晶体中慢速运动磁极化子的有效哈密顿量。当计及电子在反冲效应中发射和吸收不同波矢的声子之间的相互作用时,讨论对二维磁极化子的自陷能和有效质量的影响。     

量了阱内磁极化子自陷能的温度关系

采用推广的Ｌａｒｓｅｎ微扰理论，在有限温度情况下，对量子阱内的电子－体Ｏ声子耦合系统进行研究，得到了磁极化子自陷能的解析表达式，并以ＧａＡｓ量子阱为例，进行数值计算，结果表明，磁极化子自陷能随阱宽的增大而增大；随的变化受磁场的影响特别显著，“低磁场”时，磁极化子自陷能随温度升高而变大；“高磁场”时，却随温度的升高而小。     

二安替比林对乙氧基苯基甲烷与铬(Ⅵ)显色反应的研究及应用

合成并鉴定了二安替比林对乙氧基苯基甲烷（ＤＡｐＥＭ），研究了ＤＡｐＥＭ和铬（Ⅵ）显色反应，在磷酸介质中，Ｍｎ（Ⅱ）和ＣＴＭＡＢ协同作用下，ＤＡｐＥＭ和铬（Ⅵ）生成黄色产物，λｍａｘ＝４４５ｎｍ，ε＝１．５１×１０６Ｌ·ｍｏｌ－１·ｃｍ－１，铬（Ⅵ）含量在０．０５～０．８μｇ／２５ｍｌ内符合比尔定律，用于废水中铬（Ⅵ）的测定，结果满意．     

二维磁极化子的基态能量

本文研究晶体中通过形变势二维磁极化子的性质,采用线性组合算符法和变分法导出了二维电子与表面光学（ＳＯ）声子和表面声学（ＳＡ）声子弱耦合二维磁极化子的基态能量。     

3-[(4′-羧基)-2′-喹啉基]酚酮的合成及溴代和偶联反应

报道了 Ｐｆｉｔｚｉｎｇｅｒ 喹啉合成法在卓艹 酚酮领域中的首次应用． ３乙酰基卓艹酚酮（Ⅰ）在氢氧化钾存在下与靛红反应,得到了喹啉基取代的卓艹 酚酮化合物 ３［（４′羧基）２′喹啉基］卓艹 酚酮（Ⅱ）;化合物Ⅱ的溴化反应得到双溴代产物 ５,７二溴３［（４′羧基）２′喹啉基］卓艹 酚酮（Ⅲ）;化合物Ⅱ的偶氮偶联反应得到 ５ 位偶氮偶联产物５苯偶氮基３［（４′羧基）２′喹啉基］卓艹 酚酮（Ⅳ）．化合物Ⅱ、Ⅲ、Ⅳ为尚未见文献报道的新化合物,它们的结构已经红外光谱、核磁共振谱及元素分析予以证实．     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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