分子场理论分析R2Fe17—xMx和R2Fe17N3稀土合金

用分子场理分析分析了稀土化合物Ｒ２Ｆｅ１７－ｘＭｘ和Ｒ２Ｆｅ１７Ｎ３（Ｒ＝Ｃｅ，Ｐｒ，Ｎｄ：Ｍ＝Ａｌ；ｘ＝０，２）的温度磁化曲线，计算出分子场 数ｎＲＲ，ｎＲＦ，ｎＦＦ。由分子场系数，计算了Ｆｅ－Ｆｅ、Ｒ－Ｒ、Ｒ－Ｆｅ的相互作用对Ｔｃ的贡献ＴＦＦ、ＴＲＲ、ＴＲＦ。     

New Energy-Saving Cement-Iron-Rich FloorAlominate Cement

ＮＥＷＥＮＥＲＧＹ－ＳＡＶＩＮＧＣＥＭＥＮＴ－ＩＲＯＮ－ＲＩＣＨＦＬＵＯＲＡＬＵＭＩＮＡＴＥＣＥＭＥＮＴＨｕａｎｇ；ＷｅｎｘｉＣｈｅｎｇｄｕＤｅｓｉｇｎ＆ＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅｏｆＢｕｉｌｄｉｎｇＭａｔｅｒｉａｌｓＩｎｄｕｓｔｒｙＱｉａｎ...     

ESTABLISHING AN ORGANIC CHEMISTRY MICROSCALE LABORATORY PROGRAM

ＥＳＴＡＢＬＩＳＨＩＮＧＡＮＯＲＧＡＮＩＣＣＨＥＭＩＳＴＲＹＭＩＣＲＯＳＣＡＬＥＬＡＢＯＲＡＴＯＲＹＰＲＯＧＲＡＭ￥ＡｒｔｈｕｒＲ．Ｍｕｒｄｏｃｈ（ＭｏｕｎｔＵｎｉｏｎＣｏｌｌｅｇｅ，Ａｌｌｉａｎｃｅ，Ｏｈｉｏ，ＵＳＡ）（Ｖｉｓｉｔｉｎｇｐｒｏｆｅｓ...     

壳聚糖─Cu（Ⅱ）配位聚合物的合成、表征及催化性能研究

采用一种新方法合成了壳聚糖与ＣＵ（Ⅱ）的配位聚合物，并用ＩＲ、ＥＳＲ、ＵＶ—ＶＩＳ、ＤＴＡ—ＴＧ和ＸＰＳ分析手段对配位聚合物进行表征．同时还研究了壳聚糖－ＣＵ（Ⅱ）配位聚合物与Ｎａ２ＳＯ３体系对ＭＭＡ聚合的催化性能，证实ＭＭＡ的聚合机理是按自由基机理进行的．     

铝在钙调蛋白上配位环境的~(27)AL-NMR研究

用~（２７）Ａｌ－ＮＭＲ技术研究了铝在钙调蛋白分子上的配位环境。研究表明，ＣａＭ·ＡＩ的共振吸收表现为一个很宽的峰，化学位移在（１０～２０）×１０－６围内。证明ＡＩ在ＣａＭ上的结合是八面体型的六配位式，并且配位原子几何分布的对称性很差。     

不互溶体系的机械合金化非平衡结构的研究

应用ＴＥＭ，ＸＲＤ，ＤＳＣ等实验手段研究了不互溶Ｌａ－Ｆｅ元素混和粉（原子比Ｌａ∶Ｆｅ＝１∶５）机械合金化（ＭＡ）过程和微观结构．研究表明两元素之间无明显固态反应．在球磨作用下β－Ｌａ首先向α－Ｌａ转变，５５ｈ后形成非晶Ｌａ．同时Ｆｅ细化成纳米晶，形成纳米晶Ｆｅ和非晶Ｌａ的复合结构．非晶Ｌａ分布在纳米Ｆｅ晶粒之间，使Ｆｅ晶粒具有很好的热稳定性．应用原子尺寸模型能部分解释实验结果     

双核锰配合物的合成,表征和性质

报道了对称的八齿（Ｎ６Ｏ２型）双核配体Ｎ，Ｎ，Ｎ′，Ｎ′－四（２′－苯并咪唑甲基）－１，４－二乙氨基乙二醚（ＥＧＴＢ）及两种含锰（Ⅱ）双核配合物：（Ｍｎ２ＥＧＴＢ（ＯＡｃ）２）（ＢＰｈ２）．３Ｈ２Ｏ（Ｉ），（Ｍｎ２ＥＧＴＢ（ＯＡｃ）Ｃｌ）Ｃｌ２．２ＣＨ３ＯＨ．Ｈ２Ｏ（Ⅱ），对（Ｉ），（Ⅱ）进行了＾１ＨＮＭＲ，ＵＶ－Ｖｉｓ，摩尔电导，中远红外，ＥＳＴ和循环伏安研究，初步推测配合物（Ｉ）和（Ⅱ）分别具     

永磁材料R_(1-δ)(2T)_δT_5型化合物[(R=稀土元素,T=Fe,Co,Ti,V,等过渡金属元素),(δ=2/5,1/2)]的结构和磁性

总结了稀土金属（Ｒ）与过渡金属（Ｔ）化合物ＲＴ５型系列衍生物中Ｒ３（Ｆｅ,Ｍ）２９和Ｒ（Ｆｅ,Ｍ）１２的结构和内禀磁性,以及它们之间的关系．阐述了稳定元素（Ｍ）和嵌入轻原子（Ｎ,Ｃ,Ｈ）对其结构和内禀磁性的影响。     

QDTA/T/EGD/GC在线联用技术 ⅩⅢ.倍半氧化羧乙基锗(Ge-132)在空气气氛中的热氧化分解反应历程

应用ＤＴＡ／Ｔ／ＥＧＤ／ＧＣ在线联用技术，在空气气氛中对Ｇｅ－１３２的热氧化分解反应历程（室温～９２５°Ｃ）进行了研究，应用Ｘ－ｒａｙ仪对Ｇｅ－１３２在不同温度（４５０°Ｃ、６５０°Ｃ、７２０°Ｃ、８００°Ｃ、９２５°Ｃ）下的热氧化分解反应残物作了物相鉴定；测定了Ｇｅ－１３２的ＴＧ／ＤＴＧ曲线（室温～９７０°Ｃ）；在ＤＴＡ／Ｔ／ＧＣ联用曲线的ＧＣ谱图上，检出了各反应温度下的Ｏ２、ＣＯ２和Ｈ２Ｏ及其热氧化分解产物（逸出气）的组成演变规律。从各残物的ＸＲＤ谱图上可观察到，Ｇｅ－１３２的晶相结构破坏到７２０°Ｃ时才析出微量Ｇｅ、ＧｅＯ２，并发现Ｇｅ在８００°Ｃ时被氧化为ＧｅＯ２，至９２５°Ｃ时形成为高纯度ＧｅＯ２。ＴＧＡ定量计算表明，Ｇｅ－１３２在空气气氛中被氧化为ＧｅＯ２的得率与理论计算值相当。综合上述的实验结果与数据分析，对ＤＴＡ曲线上呈现的二个吸热效应和三个放热效应的性质作出了判断和验证，并得出了Ｇｅ－１３２在空气气氛中被氧化为ＧｅＯ２的反应历程。     

多元纳米相固态合金化机理研究

应用ＸＲＤ，ＴＥＭ，Ｍｏｓｓｂａｕｅｒ谱等实验手段研究了ＴｉＦｅＮｉ元素混合粉在机械合金化过程中的固态合金化机理．测试了不同合金化时间的Ｍｏｓｓｂａｕｅｒ谱．结果表明，由于Ｎｉ元素的加入，ＴｉＦｅＮｉ的合金化过程与ＴｉＦｅ二元系中只有Ｆｅ扩散到Ｔｉ点阵中的合金化机理不同，出现了多种Ｆｅ原子过渡状态，这些过渡状态主要是Ｎｉ及Ｔｉ原子扩散到Ｆｅ点阵中形成的固溶体结构．在合金化过程完成后，最终形成Ｂ２结构的纳米晶相．     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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