Keggin结构钼硅稀土杂多蓝的合成及性质研究

合成了钼硅稀土二电子、四电子杂多蓝ＬｎＨ３〔ＳｉＭｏ１０＾ＶＩＭｏ２＾ＶＯ４０〕·１２Ｈ２Ｏ和ＬｎＨ５〔ＳｉＭｏｇ＾ＶＩＭｏ４＾ＶＯ４０〕·１３Ｈ２Ｏ,其中Ｌｎ＝Ｌａ,Ｃｅ,Ｐｒ,Ｎｄ,Ｓｍ,Ｇｄ,通过ＩＲ,ＵＶ,ＴＧ－ＤＴＡ,ＸＰＳ,ＥＳＲ磁化率等对杂多蓝进行表征。结果表明,杂多酸盐还原为杂多蓝后,结构上发生了轻微的畸变。     

杂多金属氧酸盐〔XW11Z（H2O）O39〕^n—的嵌入化学研究

采用高温（１２０℃）水热合成方法,制备了层柱双氢氧化物Ｎｉ２Ａｌ－ＣＯ３;以此为反应原料,同过渡金属单取代型杂多金属氧酸盐阴离子〔ＸＷ１１Ｚ（Ｈ２Ｏ）Ｏ３９〕＾ｎ－（略写为ＸＷ１１Ｚ）进行离子交换反应,合成了多金属氧酸盐柱撑层柱双氢氧化物Ｎｉ２ＡｌＸＷ１１Ｚ（其中,Ｘ＝Ｓｉ＾４＋,Ｇｅ＾４＋,Ｂ＾３＋;Ｚ＝Ｃｕ＾２＋,Ｃｏ＾２＋,Ｎｉ＾２＋）;通过元素组成分析、ＸＲＤ、ＦＴ／ＩＲ等手段,对合成化合     

缺位K10H5[Ln（VW10O37）2]配合物的合成和性质研究

本文首次报道了缺位Ｋ１０Ｈ５「Ｌｎ（ＶＷ１０Ｏ３７）２」ＸＨ２Ｏ（Ｌｎ＝Ｌａ＾２＋、Ｃｅ＾３＋、Ｄｒ＾３＋、Ｎｄ＾３＋、Ｓｍ＾３＋、Ｅｕ＾３＋、Ｇｄ＾３＋、Ｔｂ＾３＋、Ｄｙ＾３＋、Ｙｂ＾３＋）１０余种配合物的合成方法，元素分析与理论值相符，利用ＩＲ、ＵＶ、ＸＲＤ和ＴＧ－ＤＴＡ对配合物进行了表征，配合物的热解性质研究表明，其分解温度为４００－４５０℃，还研究了配合物在水溶液中的稳定性。     

11—系列杂多钨硅酸盐异构体的氧化还原性质研究

通过极谱和循环伏安法，结合红外光谱、紫外光谱和Ｘ射线光电子能谱，研究了通式为β２—Ｋ６—ｎＨｎ［ＳｉＷ１１Ｍ（Ｈ２Ｏ）Ｏ３９］·ｘＨ２Ｏ（Ｍ＝Ｍｎ２＋．Ｆｅ３＋，Ｃｏ２＋，Ｎｉ２＋Ｃｕ２＋Ｚｎ２＋）杂多钨硅酸盐在溶液中的氧化还原性质，杂多阴离子的极谱半波电位Ｅ１／２。顺序为Ｃｕ２＋＞Ｍｎ２＋＞Ｆｅ２＋＞Ｚｎ２＋＞Ｃｏ２＋＞Ｎｉ２＋．发现杂多阴离子的半波电位Ｅ１／２与其组分中的过渡元素的电负性Ｘ有线性关系，讨论了过渡元素对杂多阴离子氧化还原性的影响。     

杂多钨酸盐Kn[MW11O39Ni（H2O）].xH2O的氧化还原性…

通过极谱和循环伏安全，结合紫外光谱和Ｘ射线光电子能谱研究了过渡元素Ｋｎ「ＭＷ１１Ｏ３９Ｎｉ（Ｈ２Ｏ）」．ｘＨ２Ｏ（Ｍ＝Ｓｉ、Ｔｉ、Ｇａ、Ｚｒ）在溶液中的氧化还原性质，提出了它们的还原机理，杂多阴离子的极谱半波电位顺序为Ｚｒ〉Ｔｉ〉Ｇａ〉Ｓｉ，发现杂多阴离子的Ｅ１／２与Ｍ元素的电负性有线性关系。     

化学沉积Ni-Cu-P合金及晶化处理对镀层结构和硬度的影响

从弱碱性化学镀溶液中化学沉积Ｎｉ－Ｃｕ－Ｐ合金,并用差热分析（ＤＳＣ）、Ｘ－射线衍射（ＸＲＤ）和透射电镜（ＴＥＭ）研究了晶化处理对镀层结构及硬度的影响。结果表明,镀液中ＣｕＳＯ４．５Ｈ２Ｏ浓度对合金组成有显著影响。在化学沉积过程中,Ｃｕ的优先析出使镀层中Ｃｕ／Ｎｉ摩尔比远远高于镀液中Ｃｕ＾２＋／Ｎ＾２＋摩尔比。镀液中ＳｕＳＯ４．５Ｈ２Ｏ浓度低时,沉积速度随其浓度增加而增大,但ＣｕＳＯ４．５Ｈ２Ｏ浓     

Al2O3-SiO2:Ln3+发光陶瓷的合成及发光行为

采用溶胶－凝胶法合成了Ａｌ２Ｏ３－ＳｉＯ２：Ｌｎ＾３＋（Ｌｎ＝Ｅｕ,Ｔｂ）发光陶瓷粉末,利用ＸＲＤ、ＴＧ－ＤＴＡ和ＩＲ等实验技术,研究了发光陶瓷的形成过程,并对其发光行为进行了研究。     

具有Keggin结构的过氧铌杂多钨酸盐的合成和性质研究

本文报道了四种新化合物α－Ｍ３Ｈ２［ＳｉＷ１１（ＮｂＯ２）Ｏ３９］·Ｈ２Ｏ（Ｍ＝ＴＭＡ，ＴＥＡ，ＴＢＡ．ＴＨＡ）的合成、性质和结构。几种盐的红外和紫外光谱表明阴离子具有Ｋｅｇｇｉｎ结构。１８３ＷＮＭＲ数据指出杂多阴离子中有六种环境的钨原子，证明所合成的四种杂多酸盐为单取代Ｋｅｇｇｉｎ结构的杂多酸盐。极谱数据表明：Ｏ２２－的还原波在－０．２５Ｖ左右。还通过ＴＧ、ＤＴＡ和ＤＳＣ溶解度试验和变温红外等方法研究了它们的热性质。     

杂多阴离子层柱双氢氧化物（LDH—HPOMs）的热性质研究

采用ＴＧ、ＤＳＣ和ＸＲＤ等手段研究了多酸层柱双氢氧化物Ｍｓ２Ａｌ－ＸＷ１１Ｚ（Ｍ＝Ｃｏ＾２＋,Ｎｉ＾２＋;Ｘ＝Ｓｉ＾４＋,Ｇｅ＾４＋,Ｂ＾３＋;Ｚ＝Ｃｕ＾２＋,Ｎｉ＾２＋,Ｃｏ＾２＋）在空气气氛中的热解过程,得到了Ｃｏ２Ａｌ－ＸＷ１１Ｚ系列化合物的三步热分解机理和热稳定性序列,而对于Ｎｉ２Ａｌ－ＸＷ１１Ｚ系列化合物,则表现出不同的热解过程。     

系列Ln（Ⅲ）—羧基二聚物的电子光谱研究（Ln=Nd,Sm …

报道了自合成的３种含Ｌｎ＾３＋的二聚物晶体Ｎｄ２（ＣＨ３ＣＯＯ）４（ＯＮＯ２）２（Ｃ１２Ｈ８Ｎ２）２（Ａ）,Ｓｍ２（Ｃ６Ｈ５ＣＯＯ）６（Ｃ１２Ｈ８Ｎ２）２（Ｂ）,Ｅｕ２（Ｃ６Ｈ５ＣＯＯ）６（Ｃ１２Ｈ８Ｎ２）２（Ｃ）的ＵＶ－ＶＩＳ－ＮＩＲ光谱数据,依据Ｌｎ＾３＋能级图以及相应光谱项和选律,对各谱带进行了分析指认,并与Ｌｎ＾３＋离子和简单化合物Ｌｎ（ＮＯ３）．６Ｈ２ＨＯ光谱的对比,讨论了配位场对二聚物     

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.     

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     

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