原位反应生成Al-Fe/Al_2O_3,Al-Cu/Al_2O_3复合材料的过程原理

采用喷射共沉积法制备了Ａｌ－Ｆｅ２Ｏ３及Ａｌ－ＣｕＯ复合体，Ｆｅ和Ｃｕ的质量分数分别为９．６０％和５．５０％．在热处理过程中，随着温度由６００℃升高到８００℃和１０００℃，Ｆｅ３Ｏ４按Ｆｅ３Ｏ４ＦｅＯＦｅ顺序被还原，得到Ａｌ－Ｆｅ／Ａｌ２Ｏ３复合材料，其中Ｆｅ以Ａｌ１３Ｆｅ４相及ＡｌＦｅ相形式存在．Ａｌ２Ｏ３粒度为２～４μｍ均匀分布在基体中．Ａｌ／ＣｕＯ复合体在９００℃处理后，形成Ａｌ－Ｃｕ／Ａｌ２Ｏ３复合材料．文中对显微结构形成、反应进行的过程作了分析．     

半微分循环伏安法对Fe^3＋（w）／FeCO2（nb）在水／硝基苯界面 …

本文用四电极系统半微分循环伏安法对ＦｅＣｌ３（ｗ）／ＦｅＣＰ２（ｎｂ）体系间的电子传递进行了研究，得到了ＦｅＣｌ３（ｗ）／ＦｅＣＰ２（ｎｂ）在水／硝基苯界面电子传递良好的半微分极谱峰，且通过对本体系的半积分定量测定，证实半微分实验的结论。，     

化学镀Fe-Al-P合金初探

利用化学镀方法在铜基片上施镀了Ｆｅ－Ａｌ－Ｐ合金镀层。通过改变金属盐比率ＡｌＣｌ３／（ＡｌＣｌ３＋ＦｅＳＯ４）、金属盐ＡｌＣｌ３和还原剂ＮａＨ２ＰＯ２的浓度等参数,研究了合金镀层的沉积速率,成分,表面形貌及结构的变化规律,得到了最佳镀液配方,发现络合剂和还原剂的选择是提高镀层含Ａｌ量的关键。     

几种含铁化合物对煤燃烧特性的影响

利用热重－差热－热重微分仪实验研究了几种含铁化合物,如ＦｅＣｌ３、ＦｅＣｌ２和Ｆｅ２Ｏ３等对煤燃烧特性的影响。结果表明,含铁化合物能够发迹煤的燃烧特性,不同种类的含铁化合物对煤燃烧特性的影响不同。ＦｅＣｌ３和ＦｅＣｌ２能够提高煤燃烧过程低温段的燃烧反应速率,其机理是ＦｅＣｌ３和ＦｅＣｌ２起催化剂的作用,改变了燃烧过程化学反应的动力学参数,从而加快了煤的燃烧速率。ＦｅＣｌ３和ＦｅＣｌ２的催化能力随其     

明矾渣制取PACF中Al_2O_3提取率的研究

采用浙江平阳明矾渣，通过焙烧氨浸取，盐酸反应制备新型复合絮凝剂—ＰＡＣＦ．新工艺中Ａｌ２Ｏ３提取率达６３．４％．并得到副产品钾氮复合肥，同时提高产品的稳定性能     

铜（Ⅱ）、锌（Ⅱ）、镍（Ⅱ）、铁（Ⅲ）、铝（Ⅲ）萃取分离研究──聚乙二醇—硫酸铵—偶氮胂Ⅲ体系

本文用偶氮胂Ⅲ作萃取剂，深讨了在聚乙二醇（ＰＥＧ）－硫酸铵－偶氮胂Ⅲｗ体系中Ｃｕ（Ⅱ）、Ｚｎ（Ⅱ）、Ｎｉ（Ⅱ）、Ｆｅ（Ⅲ）、Ａｌ（Ⅲ）的非有机溶剂萃取分离行为．在一定条件下，Ｆｅ（－Ⅱ）、Ａｌ（Ⅲ）几乎可被ＰＥＧ相完全萃取，而Ｃｕ（Ⅱ）、Ｎｉ（Ⅱ）不被萃取．从而获得了Ｆｅ（Ⅱ）－Ｃｕ（Ⅱ）、Ｆｅ（Ⅲ）Ｎｉ（Ⅱ）、Ｆｅ（Ⅲ）－Ｚｎ（Ⅱ）、Ａｌ（Ⅲ）－Ｚｎ（Ⅱ）及Ｆｅ（Ⅲ）－Ｃｕ（Ⅱ）、Ｚｎ（Ⅱ）、Ｎｉ（Ⅱ）混合离子的定量分离，结果满意．     

山东蓝宝石的优化处理研究

报道了山东蓝宝石的部分物理—化学性质和优化处理结果。中子活化分析得出，平均全铁含量约为１％，钛约为０．０４％。穆斯堡尔谱学分析表明，大多数铁处于二价态。高压电子显微镜分析给出四种原生包体：钛铁矿ＦｅＯＴｉＯ２，假板钛矿Ｆｅ２ＴｉＯ５，钙钛矿ＣａＴｉＯ３及非晶态相。优化处理实践证明，经高温氧化处理后，山东蓝宝石的品质能够得到显著改善，表现为透明度提高，颜色变浅。相应的部分内在变化为Ｆｅ２＋／Ｆｅ３＋值降低，非晶态相初晶化，钛铁矿ＦｅＯＴｉＯ２消失，析出钛酸铝Ａｌ２ＴｉＯ５和铁铝氧化物Ａｌ２Ｏ３Ｆｅ２Ｏ３。要获得纯正的蓝色，须严格控制处理温度和相应的氧分压，尽量使Ｆｅ２＋／Ｆｅ３＋值趋近于１。为获得优质蓝宝石，应对黑色本底作深入研究。     

二（四甲基环戊二烯基）四羰基二铁的合成及反应

四甲基环戊二烯与五羰湛铁在二甲苯中加热回流６ｈ，即生成标题化合物１，１与碘在氯仿中反应生成Ｆｅ－Ｆｅ键断裂在铁碘化物（Ｃ５ＨＭｅ４）Ｆｅ（ＣＯ）２Ｉ，２，１与氯化汞反应生成Ｆｅ－Ｆｅ键断裂的铁氯汞化物（Ｃ５ＨＭｅ４）Ｆｅ（ＣＯ）２ＨｇＣｌ３和铁氯化物（Ｃ５ＨＭｅ４）Ｆｅ（ＣＯ）２Ｃｌ４．１与氯化亚锡反应仅分离到铁氯化物４．以元素分析，ＩＲ和ＨＮＭＲ谱表征化合物１～４的结构。     

二（四甲基环成二烯基）四羰基二铁的合成及反应

四甲基环戊二烯与五羰基铁在二甲苯中加热回流６ｈ，即生成标题化合物１，１与碘在氯仿中反应生成Ｆｅ－Ｆｅ键断裂的铁碘化物（Ｃ５ＨＭｅ４）Ｆｅ（ＣＯ）２Ｉ２，１与氯化汞反应生成Ｆｅ－Ｆｅ键断裂的铁氯汞化物（Ｃ５ＨＭｅ４）Ｆｅ（ＣＯ）２ＨｇＣｌ３和铁氯化物（Ｃ４ＨＭｅ４）Ｆｅ（ＣＯ）２Ｃｌ４．１与氯化亚锡反应仅分离到铁氯化物４．以元素分析，ＩＲ和１ＨＮＭＲ谱表征了化合物１～４的结构．     

双(正-辛基亚磺酰)乙烷溶剂萃取金及其应用

研究用双（正－辛基亚磺酰）乙烷的乙酸丁酯溶液在盐酸介质中萃取金的性能 有在ＫＢｒ下于０．１￣６ｍｏｌ／ＬＨＣｌ介质能定理萃取金,酸性硫脲溶液可将金定量反萃并用结晶紫分光光度法测定金,大量Ｆｅ＾３＋、Ｃｕ＾２＋、Ｎｉ＾２＋、Ｓｂ（Ｖ）等２０余种贱金属和贵金属不干扰,斜率法,紫外和红外光谱研究萃合物组成和萃取机理,方法具有简便、准确、选择性高,可于矿物中微量金的测定。     

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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