临潼唐代窖藏佛教铜造像制作工艺的研究

陕西地区出土大量隋唐时期佛教铜造像,临潼邢家村窖藏发现近两百件唐代造像.通过对临潼博物馆藏13件铜造像进行细致观察和便携式X荧光仪检测,可以了解铜造像的材质和制作工艺,结合古代文献,更加深入地了解唐代佛教铜造像的制作技术.     

中国古代的矿物加工技术——传承与发展

介绍了中国古代的矿物加工技术，包括早期的石器和陶瓦制作，中国先民使用矿物制作器件，古代铁矿的矿冶加工利用，古代的湿法提铜，古代重选淘洗技术的使用和记述，古代的浮选技术，古代铜、铁矿冶生产规模等；也简要阐述了近现代中国选矿工业的兴起与科技发展，总结归纳了现代矿物加工科学技术的创新成就。     

古代铜鼓防腐蚀机理研究

构成铜鼓的材质为青铜合金，经剖析研究其成分和构相，考证其生产工艺和周围环境，发现古代铜鼓具有防腐蚀条件，从而提出该响铜表层可能是经过可熔性六价铬化合物的处理，生成表层并不含铬的防腐层．实验证实这种判断是合理的；经强化试验，证明防腐蚀效果显方法亦可用于其他青铜器的保护．     

钛合金与不锈钢真空扩散焊接的研究

对铁合金TC4与不锈钢ICrl8Ni9Ti异种金属扩散焊接头的结合性能进行了试验研究，利用光学显微镜、扫描电镜、电子探针仪等对接头进行了微观分析．结果表明：TC4/1Cr19Ni9Ti直接扩散焊时，由于母村组元的相互扩散和迁移，在交界面附近形成了金属间化合物层，而导致接头脆断．采用钒十铜作中间过渡金属，则有效地防止了Ti与Fe、Cr、Ni的相互扩散和迁移，保证了钛合金TC4与不锈钢1Cr18Ni9Ti的良好连接．接头的强度与软质中间层铜的厚度有关，最高强度可接近母材不锈钢的下限．     

四川盐源地区出土青铜钺的科学分析

为研究川南地区古代青铜制作技术,利用金相显微镜和扫描电镜能谱分析仪,对四川盐源地区出土的8件铜钺进行了初步的科学分析．结果表明这些铜钺有红铜、锡青铜、铅锡青铜三种材质．以锡青铜为主,舍金配比不理想．制作方式有铸造及热锻两种方式．另外通过器物类型学进行比较,认为该地区的青铜文化与巴蜀文化及滇文化都存在交流．     

甲醇铜、乙酰乙酸乙酯铜的合成及性质研究

甲醇铜、乙酰乙酸乙酯铜的合成条件温和，实验表明：甲醇铜是含甲氧基桥键的二聚物，乙酰乙酸乙酯铜是铜的乙酰乙酯络合物．甲醇铜的活性比乙酰乙酸乙酯铜高，但甲醇铜易水解和不易溶于有机溶剂，而乙酰乙酸乙酯铜在有机溶剂中溶解性比甲醇铜大得多，乙酰乙酸乙酯铜可以代替中醇铜用于溶胶－凝胶法制备功能材料．     

从商代铁刃铜钺谈我国用铁的历史

商代铁刃铜钺的发现是我国古代金属史上的一件大事。商代铜钺上铁刃的使用，表明铁已作为一种新的金属，正在中华民族的文化中出现。台西商代铁刃铜钺发现的意义在于，它把我国用铁的历史，从春秋时期提早到了商代中期。而商代铜钺上铁刃的使用，以“铁的证据”与“铁的事实”告诉世人：商代人已经开始用铁。     

中国古代浸析法采铜的成就

中国古代在采矿工业上,是取得了很大成就的。但是,由于“矿”“冶”分科还只是近四十年内的事,故在考查古代矿业的生产过程时,离不开冶炼(提炼)的过程。 本文拟分成下列五个方面: 一、现代化学采矿法的世界水平; 二、中国古代浸析法采铜的萌芽; 三、中国古代浸析法采铜的正式开始; 四、中国古代浸析法采铜的全貌; 五、结语。     

黄河口及邻近海域沉积物中铜的研究

利用1984年夏季的现场调查，作者研究了黄河口及邻近海域表层沉积物中铜的地球化学形式。含量及其分布，分析了铜和有机质、铁、锰、锌及中值粒径之间关系，并指出总铜平均含量为20．4mg／kg，其中残渣部分占55％，有机结合铜为19．4％、Fe-Mn氧化物结合铜为12．1％、碳酸盐结合铜为13．1％，可交换铜的含量小于1％。此外讨论了沉积物中各种形式铜含量与铁，锰，有机质及中值粒径关系。     

凹凸棒石修复铜污染土壤

通过室内盆栽实验，研究了凹凸棒石对铜污染土壤的修复效果，结果表明，铜污染土壤中添加凹凸棒石，与对照相比，可显著降低植株对铜的生物有效性。添加5g凹凸棒石，植株总干重增加了35．62％，地上部铜含量降低了29．08％，地下部铜含量降低了30．01％。因此，可利用凹凸棒石进行铜污染土壤的原位修复。     

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.     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

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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