K_(0.5)(NH_4)_(5.5)[MnMo_9O_(32)]6H_2O的合成及其晶体结构

由ＫＭｎＯ４和（ＮＨ４）６Ｍｏ７Ｏ２４４Ｈ２Ｏ合成了标题化合物Ｋ０．５（ＮＨ４）５．５［ＭｎＭｏ９Ｏ３２］６Ｈ２Ｏ，用ｘ－射线测定了晶体结构．该化合物的晶体属三方晶系，空间群Ｒ３２；ａ＝１５．８４６（４），Ｃ＝１２．３９６（３），Ｍｒ＝１６５７．２８，Ｖ＝２６９５．６３，Ｚ＝３，Ｄｃ＝３．８２ｇ／ｃｍ３，μ＝４１．５ｃｍ－１，Ｆ（０００）＝２９６７．对３０２４个可观测衍射［Ｆ０≥３σ（Ｆ０）］最终偏离因子Ｒ＝０．０３７，Ｒｗ＝０．０４３．结构测定表明：Ｍｎ（Ⅳ）与６个氧配位形成键长相同的ＭｎＯ６八面体，它位于［ＭｎＭｏ９Ｏ３２］６－阴离子的中心，而Ｍｏ（Ⅵ）均与氧原子六配位，形成９个畸变的ＭｏＯ６八面体．     

多嵌段共聚物PET／PEO中的自由体积特性

利用正电子寿命谱的ＰＡＴＦＩＴ和ＭＥＬＴ分析程序，研究了多嵌段共聚对苯二甲酸乙二酯／环氧乙烷（ＰＥＴ／ＰＥＯ）的自由体积特性。从正电子寿命的最长分量随温度的变化发现，多嵌段共聚物有两个玻璃化转变温度，这表明多嵌段共聚物中ＰＥＯ和ＰＥＴ相的互容性较差，根据浅束缚态理论解释了玻璃化转变温度以下最长寿命分量强度的变化规律，并且 ＭＥＬＴ分析程序得到了自由体积浓度随温度的分布。     

部分取代苯定量结构-生物降解相关性(QSBR)研究

采用Ｃｈｅｍｓ３Ｄ中量子化学ＭＯＰＡＣ－ＡＭ１法计算了７种间苯胺类和８地苯酚的分子量高占有轨道能ＥＨＯＭＯ、分子最低空轨道能ＥＬＵＭＯ。用ＱＳＡＲ程序软件包查得分子体积Ｖｍ。结合分子连接性指数（＾３Ｘ,＾３Ｘ＾ｖ）对生物降解二级速率常数对数ｌｇＫｂ进行定量结构－生物降解相关性（ＱＳＢＲ）分析,通过回归分析,得到如下两个回归方程：ｌｇＫｂ＝－０．８３２－０．１１８Ｖｍ＋１．７４８＾３Ｘ＾ｖ,ｎ＝１５,Ｒ＾２＝０．８３２,ＳＥ＝０．５７７,Ｆ＝２９．７,ｐ＝０．０００。（１）ｌｇＫｂ＝０．１２４Ｖｍ＋１．７４９＾３Ｘ＾ｖ,ｎ＝１５,Ｒ＾２＝０．９９８,ＳＥ＝０．５５９１,Ｆ＝４１４８．９９,ｐ＝０．０００．（２）     

尼龙6/乙烯-1-辛烯共聚物接枝马来酸酐共混体系的亚微相态与性能

采用熔融挤出法制备了ＰＡ６／ＰＯＥ和ＰＡ６／ＰＯＥｇＭＡＨ共混合金,借助于力学试验机、ＴＥＭ、ＳＥＭ、Ｍｏｌａｕ实验和毛细管流变仪测定了共混合金的力学性能、亚微相态、冲击断口形貌和流变性能,系统地研究了ＰＯＥｇＭＡＨ对ＰＡ６的增容增韧作用。结果表明,ＰＯＥ与ＰＡ６是不相容体系,经ＭＡＨ接枝改性后的ＰＯＥ与ＰＡ６发生化学反应,生成的ＰＯＥｇＰＡ６共聚物起到了原位增容作用,细化了分散相尺寸,有效地改善了合金的力学性能,ＰＡ６／ＰＯＥｇＭＡＨ共混合金的缺口冲击强度是ＰＡ６的１２倍。     

拟圆盘下有理逼近的正定理

在拟圆盘上，该文给出用有理函数逼近解析函数的两个正定理，即设Ｅ为闭的ｋ－拟圆盘，０≤ｋ≤１，ｆ（ｚ）在Ｅ的内部解析且在Ｅ上连续，则Ｅｎ，ｒ０（ｆ）＝Ｏ（ｎ＾－ａ），其中，Ｅｎ，ｒ（ｆ）＝ｉｎｆ（∥Ｒ－ｆ∥Ｅ：Ｒ∈Ｒｎ，ｒ０），＝１－ｋ。若进一步ｆ（ｚ）∈Ｌｉｐβ，０〈β≤１，则Ｅｎ（ｆ）＝Ｏ（ｎ＾－α），α＝β（１－ｋ），其中Ｅｎ（ｆ）＝ｉｎｆ（∥Ｐ（ｚ）／П（ｚ－ｚｊ）－ｆ∥Ｅ：ｐ（ｚ）∈Ｐｎ（     

B值一致渐近鞅的局部收敛性及大数定律

设（Ω，Ｆ，Ｐ）是概率空间，Ｂ是ｐ阶一致光滑空间，Ｘ＝（Ｘｎ，Ｆｎ，ｎ≥１）是Ｂ值一致渐近鞅，则有：（１）｛∑∞ｎ＝１Ｅ（‖ｄＸｎ‖βＭ‖ｄＸｎ‖β－１＋Ｍβ／Ｆｎ－１）＜∞，１≤β≤ｐ，Ｍ＞０，ｓｕｐｎ≥１‖Ｘｎ‖＜∞｝｛Ｘｎ收敛｝（２）｛∑∞ｎ＝１Ｅ（‖ｄＸｎ‖β（Ｍｎ）‖ｄＸｎ‖β－１＋（Ｍｎ）β／Ｆｎ－１）＜∞，Ｍ＞０，１≤β≤ｐ｝｛Ｘｎｎ收敛于０｝（３）若对任意的ｘ≥０及ｎ≥１，均有Ｐ（‖ｄＸｎ‖≥ｘ）≤ａＰ（Ｙ≥ｘ），其中Ｙ是一正实值随机变量，ＥＹ＜∞，Ｅ（Ｙｌｎ＋Ｙ）＜∞，ａ是一正实数，那么Ｘｎｎａ．ｓ．收敛于０．上述结论推广与改进了若干熟知的重要结果     

PVC／NBR／SBS三元共混物的形态结构与性能

本文通过冲击试验、动态力学分析（ＭＭＡ）、透射电镜（ＴＥＭ）和扫描电镜（ＳＥＭ）观察，研究了聚氯乙烯／丁腈橡胶／苯乙烯。丁二烯。苯乙烯嵌段共聚物（ＰＶＣ／ＮＢＲ／ＳＢＳ）三元共混物的形态结构和性能，并且讨论了两者之间的关系。ＮＢＲ－２９对ＰＶＣ和ＳＢＳ有较好的增容作用，与ＳＢＳ一起对ＰＶＣ有协同增韧效应。     

两亲接枝共聚物作乳化剂时丙烯酰胺分配系数的确定

以两亲接枝共聚物－－聚苯乙烯接枝聚氧乙烯（ＰＳ－ｇ－ＰＥＯ）和聚人酸甲酯接枝聚乙烯（ＰＭＭＡ－ｇ－ＰＥＯ）作为乳化剂,选用合适的方法测试了丙烯酰胺（ＡＭ）在胶束和液滴中的分配系数－考察了两亲支共聚物的浓度对分配系数的影响,结果表明：分配系数与两亲接枝共聚物的浓度成正比关系,ＰＳ－ｇ－ＰＥＯ作乳化剂时,ηＰＳ－ｇ－ＰＥＯ＋０．１７６ｃＥ＾０．９８５,而ＰＭＭＡ－ｇ－ＰＥＯ作乳化剂时,ηＰＭＭＡ－ｇ－     

氰基桥联铬（Ⅲ）—镍（Ⅱ）和铬（Ⅲ）—铜（Ⅱ）多核配合物的？…

合成了配合物「ＭＬ」３「Ｃｒ（ＣＮ）６」２．ｘＨ２Ｏ（Ｍ＝Ｎｉ,Ｌ＝三（２－胺基乙基）胺（ｔｒｅｎ）,ｘ＝０;Ｍ＝Ｃｕ,Ｌ＝ｆｇ ｇｍｗ ｏｑｄ ｄｇ ｅｐｖ （ｄｐｔ）ｘ＝８）和「Ｍ（ｔｎ）２」２「Ｃｒ（ＣＮ）６」ＣｌＯ４．ＸＨ２Ｏ（ｔｎ＝１,３－丙二胺,Ｍ－Ｎｉ,ｘ＝０;Ｍ＝Ｃｕ,ｘ＝２）。用元素分析、ＩＣＰ分析、ＩＲ光谱等对配合物进行了表征,测定了它们的磁性质,变产化率研究表明：「Ｃｕ（ｄｐ     

K0.5（NH4）5.5[MnMo9O32].6H2O2的合成及其晶体结构

由ＨＭｎＯ４和（ＮＨ４）６Ｍｏ７Ｏ２４；４Ｈ２Ｏ合成了标题化合物Ｋ０．５（ＮＨ４）５．５「ＭｎＭｏ９Ｏ３２」．６Ｈ２Ｏ用Ｘ－射线测定了晶体结构，该化合物的晶体属三方晶系，空间群Ｒ３２；ａ＝１５．８４６（４），Ｃ＝１２．３９６（３０）Ａ，Ｍｒ＝１６５７．２８，Ｖ＝２６９５．６Ａ＾３，Ｚ＝３，Ｄｃ＝３．８２ｇ／ｃｍ＾３，μ４１．５＝ｃｍ＾－１，Ｆ（０００）＝２９６７和３０２４个可观测衍射「Ｆｐ≥３σ（     

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