纳米级热敏电子陶瓷材料钛酸钡的合成

以ＴｉＣｌ４,ＢａＣｌ２－２Ｈ２Ｏ,ＫＯＨ,ＮａＯＨ为原料在ＰＨ值１０－１２,反应温度６０－１５０℃压力０．１－０．３５ＭＰａ、反应时间１－４ｈ下经凝胶 晶转变合成钛酸钡,经有关厂家进行了半导化试验产物借助于ＸＲＤ、ＴＥＭ及化学分析,证明产物达到纳米级钛酸钠水平。     

在Pr_3N－P_2O_5－Al_2O_3－H_2O体系中合成AlPO_4－5分

选用三正丙胺为模板剂．采用水热晶化法合成ＡｌＰＯ４－５分子筛。在Ｐｒ３Ｎ－Ｐ２Ｏ５－Ａｌ２Ｏ３－Ｈ２Ｏ体系中研究了水热晶化条件──模板剂用量、反应混合物ｐＨ值、晶化时间和晶化温度等。对ＡｌＰＯ４－５分子筛晶相形成和产物结晶度的影响。通过ＸＲＤ、ＩＲ、ＳＥＭ及ＤＴＡ、ＴＧ等分析手段，表征了ＡｌＰＯ４－５的结构和热稳定性能。     

MgAPO—44舂子筛的合成与性能研究

以Ａｌ（ＯＨ）３．Ｈ３ＰＯ４，ＭｇＣｌ２．６Ｈ２Ｏ为原料，以环己胺为模板剂，用水热晶化法合成了ＭａＡＰＯ－４４分子筛纯相，研究了反应物配比、酸碱度及铝源等水热晶化条件对产物物相的影响，骼ＸＲＤ．ＩＲ，ＳＥＭ／ＥＰＭＡ，ＴＧ－ＤＴＡ等对产物进行了表征。研究表明，所合成的ＭｇＡＰＯ－４４分子筛具有小孔结构和较高的热稳定必一。     

MgAPO-44分子筛的合成与性能研究

以Ａｌ（ＯＨ）３，Ｈ３ＰＯ４，ＭｇＣｌ２６Ｈ２Ｏ为原料，以环己胺为模板剂，用水热晶化法合成了ＭｇＡＰＯ－４４分子筛纯相，研究了反应物配比、酸碱度及铝源等水热晶化条件对产物物相的影响，用ＸＲＤ，ＩＲ，ＳＥＭ／ＥＰＭＡ，ＴＧ－ＤＴＡ等对产物进行了表征。研究表明，所合成的ＭｇＡＰＯ－４４分子筛具有小孔结构和较高的热稳定性     

高强度生物活性微晶波玻璃的研制

以ＭｇＯ－ＣａＯ－ＳｉＯ２－Ｐ２Ｏ５系统基础玻璃，经过微晶化处理，制备一种高机械强度的生物活性微晶玻璃。用Ｘ射线衍射仪（ＸＲＤ）研究了微晶玻璃的晶相；借助扫描电子显微镜（ＳＥＭ）观察了微晶玻璃的显微结构。结果表明，这种微晶玻璃的主晶相为磷灰石；该材料具有良好的生物活性和力学性能。     

不同碱源对合成MCM-48介孔分子筛的影响

利用水热晶化法,以Ｍ２Ｏ（Ｍ为Ｌｉ、Ｎａ、Ｋ）－水－ＣＴＡＢ－ＴＥＯＳ为原料合成了ＭＣＭ－４８介孔分子筛,比较了不同碱源对合成ＭＣＭ－４８分子筛的影响。结果表明ＮａＯＨ是最佳碱源。利用ＸＲＤ、ＴＧ—ＤＴＡ、Ｎ２吸附等对合成样品进行了表征     

高强度生物活性微晶玻璃的研制

以ＭｇＯ－ＣａＯ－ＳｉＯ＿２－Ｐ＿２Ｏ＿５系统基础玻璃，经过微晶化处理，制备了一种高机械强度的生物活性微晶玻璃，用Ｘ射线衍射仪（ＸＲＤ）研究了微晶玻璃的晶相；借助扫描电子显微镜（ＳＥＭ）观察了微晶玻璃的显微结构。结果表明，这种微晶玻璃的主晶相为磷灰石；该材料具有良好的生物活性和力学性能．     

纳米氧化镁的合成

以ＭｇＣｌ２·６Ｈ２Ｏ和ＣＯ（ＮＨ２）２为原料，采用均匀沉淀法合成了纳米ＭｇＯ．讨论了反应温度、煅烧温度和时间对产物的影响，通过ＸＲＤ和ＴＥＭ对纳米ＭｇＯ进行了表征．     

基片温度对Cu—TiC复合薄膜的影响

研究了基片温度对Ｃｕ－ＴｉＣ复合薄膜的影响。Ｃｕ－ＴｉＣ复合薄膜采用多靶磁控溅射仪制备。测定了薄膜的显微硬度及电阻率，并利用ＸＲＤ，ＳＥＭ，ＥＤＡＸ和ＴＥＭ研究了薄膜结构。结果表明，随基片温度的提高，Ｃｕ－ＴｉＣ复合薄膜中ＴｉＣ含量增加，Ｃｕ和ＴｉＣ的晶化逐步完善。     

F~-离子和Ti~(4+)离子在CaO-Al_2O_3-SiO_2系玻璃晶化时的作用

在ＣａＯ－Ａｌ２Ｏ３－ＳｉＯ２（ＣＡＳ）系玻璃中单独引入Ｆ－离子或Ｔｉ４＋离子,以及同时引入Ｆ－离子和Ｔｉ４＋离子,通过ＤＴＡ（差热分析）、ＸＲＤ（Ｘ－射线衍射）、Ｒａｍａｎ、ＸＰＳ（光电子能谱）和ＳＥＭ（扫描电镜）方法进行了研究。结果表明在ＣＡＳ系玻璃中一部分Ｆ－离子取代非桥氧离子处于玻璃网络内部,另一部分Ｆ－离子处于玻璃网络间隙,Ｆ－离子能促使ＣＡＳ系玻璃分相,在稍高于Ｔｇ的某一温度热处理时,ＣａＦ２晶体首先从玻璃中析出;Ｔｉ４＋离子对玻璃晶化影响不大,在稍高于Ｔｇ的某一温度热处理时,加Ｔｉ４＋离子和不加Ｔｉ４＋离子的玻璃首先析出的晶相均是钙长石（ＣａＡｌ２Ｓｉ２Ｏ８）;在ＣＡＳ系玻璃中同时引入Ｆ－离和Ｔｉ４＋离子时,在稍高于Ｔｇ的某一温度热处理后首先析出的晶体是ＣａＦ２和钙长石（ＣａＡｌ２Ｓｉ２Ｏ８）,Ｆ－离子和Ｔｉ４＋离子混合使用能更好地促进ＣＡＳ系玻璃的晶化。     

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.     

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