发展四川新材料产业的对策研究

材料是人类赖以生存和发展的物质基础,是人类文明和社会进步的里程碑.人类在科学技术上的每一次进步,都有材料科学的卓越贡献,并伴随新材料的开发和运用极大地促进了人类社会的文明与进步.     

关于材料科技与产业的回眸与思考

 材料是人类用于制造机器、构件和产品的物质,是人类赖以生存和发展的物质基础.材料科学技术的每一次重大突破都会引起技术和产业革命,给社会生产力和人类生活带来巨大变革.     

材料科技与人类社会的互动发展

文章从两个方面论述了材料科技与人类社会的互动作用:一方面是社会实践推动了材料科技的产生与发展,另一方面材料科技的产生与发展又极大地促进了人类社会的发展与进步。最后,根据上述材料科技与人类社会的关系,讨论了给我们材料科技工作者的启示。     

时代的宠儿——石墨烯

 人类的文明史中,材料起着举足轻重的作用.回顾历史,石器、青铜器和铁器的使用对人类社会生产力的发展都起到划时代的作用.材料是人类文明的物质基础,是社会发展的推动力.现今,技术与经济的发展愈来愈依赖材料的进步,多个国家都已重视材料对技术和产业发展的促进作用,如:2011年,美国总统奥巴马宣布启动“材料基因组计划”.之后,多个国家也相继启动.     

循环经济的本质是生态经济

循环经济是人类经济社会发展的必然选择,循环经济本质是生态经济,是实现经济、社会与环境可持续发展的经济范式.该文对我国循环经济现状进行分析,并提出了发展循环经济的对策.     

服装材料的发展及其文化现象

论述了纤维材料发展的三个阶段以及加工技术的发展过程,说明服装材料具有物质和文化的双重特性,有着自己独特的文化内涵,服装文化以材料为物质依托和精神源泉.服装材料及文化是人类社会技术、技艺、文化艺术的重要组成部分之一.只有运用材料,才能表现完全的意义和充满新鲜活力的服装形象.     

金属材料的应用与发展综述

人们通常将材料和能源以及信息誉为人类社会进步及发展的三大支柱,而金属材料是人类历史中研究应用时间最长、应用范围最为广泛的重要材料。阐述了金属材料的基本概念,介绍了金属材料的种类、性能及其在社会发展中的应用,揭示了新型金属材料的发展动态与方向。     

发展新型材料 促进社会进步

材料是人类一切生产和生活活动的物质基础 ,是生产力的标志。本文探讨了新型材料在人类社会发展中所起的重要作用 ,提出新型材料的发展创新是各个高新技术领域发展的突破口 ,是现代社会经济发展的先导 ,是现代工业和现代农业发展的基础 ,也是国防现代化的保证 ;同时也改变着人类在社会活动中的实践方式和思维方式 ,由此极大地推动了社会进步     

文化差异对国际贸易的制约及对策分析

文化是人类社会历史实践过程中所创造的物质财富和精神财富的总和,各国文化的差异可以阻碍国际贸易的正常发展.本文通过分析文化差异对国际贸易的制约,提出了应对文化差异时国际贸易不利影响的对策.     

新材料成为北京高新技术的支柱产业

人类社会发展的历史证明，材料是人类生存、发展的基础，也是现代文明的重要支柱。纵观人类利用材料的历史，可以清楚地看到，每一种重要的新材料的发现和应用，都把人类支配自然的能力提高到一个新的水平。     

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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