稀土硅化物的制备及红外吸收光谱

报导了由射频溅射制备稀土硅化物薄膜，样品的红外吸收光谱中，在８６５ｃｍ＾－１有一个强吸收峰，而在４６２ｃｍ＾－１有一个弱吸收峰。样品进行了高温退火后，强吸收峰基本没有变化，而弱吸收峰随退火温度的升高而增强，我们认为强吸收峰是ＹＳｉ２的键振动吸收，而弱峰是ＹＳｉ的键振吸收。     

高温热解聚硅烷制备SiC薄膜初探

用组合成的可溶性聚硅烷１７１０Ａ作涂膜材料,进行不同温度的真空热解或高纯氮下热解实验。通过ＩＲ谱和ＸＰＳ谱分析,在７９０－８１０ｃｍ＾－１和１２７０ｃｍ＾－１红外吸收特征峰分别对应Ｓｉ－ＣＨ３摇摆振动和伸缩振动吸收峰,ＸＰ－Ｓｉ谱给出Ｓｉ（２Ｐ）结合能力为１０１．６ｅＶ,ＣＩＳ为２８４．３ｅＶ,证明有α－ＳｉＣ：Ｈ生成。     

氮化碳薄膜的红外吸收光谱（FTIR）研究

测量了采用ＲＦ－ＣＶＤ方法制备的氮化碳薄膜的ＦＴＩＲ曲线，膜层中的Ｃ－Ｎ键、石墨相、Ｃ＝Ｎ键和Ｃ≡Ｎ键的红外吸收峰波数分别为１２５０ｃｍ＾－１，１５７６ｃｍ＾－１，１６８７ｃｍ＾－１和２０５４ｃｍ＾－１。采用技术措施避免石墨相析出的氮化碳薄膜，其红外吸收谱只出现了Ｃ－Ｎ键的伸缩振动吸收峰（９４８ｃｍ＾－１），薄膜中的其它功能基团的存在对Ｃ－Ｎ键的振动频率有一定的影响。     

抗癌药物顺式二氯二胺合铂的合成及理化特性研究

采用傅里叶变换红外光谱、差热分析等近代物理方法研究了抗癌药物顺式二氯二胺合铂的特性、结构以及构效关系．结果表明,ｃｉｓ－［Ｐｔ（ＮＨ３）２Ｃｌ２］熔解分为放热过程和吸热过程,放热峰为３０１．２３７℃,吸热峰为３０６．９３２℃．Ｐｔ－Ｎ伸缩振动频率在３３００ｃｍ－１附近分裂成３３００ｃｍ－１和３２１０ｃｍ－１两个吸收峰,在１３００ｃｍ－１处分裂成１３２５ｃｍ－１和１３００ｃｍ－１两个吸收峰．Ｐｔ－Ｃｌ伸缩振动峰在３３８ｃｍ－１．     

Hg系高Tc超导体（Hg0.8M0.2）Sr2（Y1—xCax）Cu2O6＋δ的喇 …

对Ｈｇ系高Ｔｃ超导体（Ｍｇ０．８Ｍｏ０．２）Ｓｒ２（Ｙ１－ｘＣａｘＣｕ２Ｏ６＋δ）的晶格振动进行了化分析,给出了该晶体在Γ点晶格振动的对称性分类。利用红外光声光谱结合喇曼散射研究了该系列样品的声子振动性质。实验结果表明,在喇曼光谱中主要出现１４５,３２０,４４０,５７,５９２ｃｍ＾－１几个特征振动峰。在中红外吸收光谱（光声光谱）中出现６４５ｃｍ＾－１特征振动峰,而１４５,３２０,４４０,５７８,６     

10MeV电子辐照GaAs Raman谱的研究

研究了１０ＭｅＶ电子辐照掺ＳｅＧａＡｓ外延层和半绝缘（ＳＩ）ＧａＡｓ的Ｒａｍａｎ测量．观察了几个相关缺陷的特征,认为２２０ｃｍ－１峰与Ａｓｉ相联系,这至少部份和ＥＬ２及ＥＬ１２缺陷有关．对掺Ｓｅ样品的２０４ｃｍ－１和２５８ｃｍ－１峰,可能和小砷簇的振动模式有关．而７７ｃｍ－１和１８５ｃｍ－１峰则应是由无序活化Ｒａｍａｎ散射引起的．辐照结果显示,小砷簇和无序态随辐照剂量增加而增加．本文还将讨论其它的有关的Ｒａｍａｎ峰     

抗癌药物顺式二氯二胺合铂的合成及理化特性研究

采用傅里叶变换红外光谱、差热分析等近代物理方法研究了抗癌药物顺式二氯二胺合铂的特性、结构以及构效关系。结果表明,ｃｉｓ－［Ｐｔ（ＮＨ３）２Ｃｌ２］熔解分为放热过程和吸热过程,放热峰为３０１．２３７℃,吸热峰为３０６．９３２℃。Ｐｔ－Ｎ伸缩振动频率在３３００ｃｍ＾－１附近分裂成３３００ｃｍ＾－１和３２１０ｃｍ＾－１两个吸收峰,在１３００ｃｍ＾－１处分裂成１３２５ｃｍ＾－１和１３００ｃｍ＾－１两个吸收     

Bi系高温超导体CuO_2面内Cu-O键振动的理论分析

根据分子振动理论,采用简化模型分析了Ｂｉ系高温超导体ＣｕＯ２面内Ｃｕ Ｏ键振动的振动模式,计算了单一红外活性模Ｅｕ的振动频率·计算结果表明:ＣｕＯ２面内Ｃｕ Ｏ键Ｅｕ模式伸缩振动的频率为６７３８ｃｍ－１,８０３２ｃｍ－１,弯曲振动的频率为４１２ｃｍ－１·计算结果中６７３８ｃｍ－１,４１２ｃｍ－１与Ｂｉ系高温超导体红外吸收光谱的实验分析结果较好吻合,８０３２ｃｍ－１与实验分析结果中８００ｃｍ－１附近归属尚未确定的吸收峰峰位比较接近·     

Bi系高温超导体Cu—O键伸缩振动频率的理论计算

根据分子振动理论,采用简化模型分析了Ｂｉ系高温超导体ＣｕＯ２面内Ｃｕ－Ｏ键的伸缩振动模式,计算了相应于各振动模式的振动频率,并将理论分析结果与实验结果进行了分析,分析结果表明Ｂｉ系高温超导体ＣｕＯ２面内Ｃｕ－Ｏ键的伸缩振动模式有拉曼活性模Ａ１ｇ,Ｂ１ｇ和红外活性模Ｅｕ,其中拉蔓模Ａ１ｇ,Ｂ１ｇ的振动频率分别为１２６．３ｃｍ＾－１和５７３．６ｃｍ＾－１,与实验确定的Ｂｉ系高温超导体Ｃｕ－Ｏ键伸缩振动     

离子注入形成FeSi2埋层的电镜研究

利用ＭＥＶＶＡ离子源将Ｆｅ离子注入到Ｓｉ基体中会生成一层铁硅化物薄膜．利用电子显微镜，研究了这层铁硅化物的显微结构及其在随后的升温退火过程中发生的变化．研究结果表明，在离子注入剂量为１×１０１７／ｃｍ２的未退火样品中，亚稳的γ－ＦｅＳｉ２相占大多数，同时有少量的由ＣｓＣｌ结构派生的缺陷相Ｆｅ１－ＸＳｉ．在（１００）取向的Ｓｉ片上，这个硅化物层埋在硅基体中，形成了厚度为２５ｎｍ左右的埋层（ｂｕｒｉｅｄｌａｙｅｒ）结构     

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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