高氯酸镝、高氯酸铕在二苯亚砜体系中的共发光

合成了高氯酸镝铕（Ⅲ）二苯亚砜Ｄｙ１－ｘＥｕｘ（ＤＰＳＯ）η（ＤＰＳＯ）η（ＣｌＯ４）３（ｘ＝１．０００￣０．０００）一系列固体配合物,测定了配合物的组成及荧光激发和发射光谱、发现镝（Ⅲ）和铕（Ⅲ）的姚有猝灭作用,铕（Ⅲ）对镝（Ⅲ）的发光也有猝灭作用,同时研究了Ｄｙ＾３＋、Ｅｕ＾３＋相互猝灭的浓度范围,并根据实验结果了配体Ｓ１能级以及Ｄｙ＾３＋的有关能级     

卤代烃对唑化合物荧光猝灭机理

测试了１×１０－５ｍｏｌ／Ｌ５，５－二苯基－２，２－联唑（ＰＯＯＰ）、反－１，２－双［２－（５－苯基唑基）］乙烯（ＰＯＥＯＰ）、４，４－双［２－（５－苯基唑基）］－１，１－联苯（ＰＯＢＯＰ）在含不同浓度卤代烃的１，４－二氧六环溶液中的荧光量子产率，讨论了荧光猝灭机理，计算出ＣＨ３Ｉ、ＰｈＩ、ＰｈＢｒ对ＰＯＥＯＰ、ＰＯＯＰ、ＰＯＢＯＰ的荧光猝灭速率常数．研究发现，卤代烃分子越小，卤原子核电荷数越高，其猝灭荧光能力越强     

氯化钠介质中核酸对铈(Ⅲ)的荧光猝灭特性及其分析应用

在ｐＨ＜６．２的ＮａＣｌ介质中，Ｃｅ（Ⅲ）的荧光（λｅｘ２５４．０ｎｍ和λｅｍ３５０．０ｎｍ）为核酸所猝灭．２０℃时小牛胸腺（ｃｔ）ＤＮＡ、鱼精子（ｆｓ）ＤＮＡ和酵母（ｙ）ＲＮＡ对Ｃｅ（Ⅲ）的荧光猝灭在０～６．０μｇ／ｍｌ的浓度范围内符合方程ｌｎ（Ｆ０／Ｆ）＝ｋｃ＋ｂ，在３．０～８．０μｇ／ｍｌ范围内却符合方程Ｆ０／Ｆ＝ｋｃ＋ｂ，而在３．０～６．０μｇ／ｍｌ浓度范围内同时遵守上述二方程．猝灭过程与碱基的摩尔吸光系数大小有关．应用核酸对Ｃｅ（Ⅲ）的这种荧光猝灭特性可以灵敏的测定各种核酸     

芳香单酮与稀土离子间的能量转移

应用荧光物质的激发光谱和发射光谱对九种芳香单酮与稀土离子（Ｅｕ￣（３＋），Ｔｂ￣（３＋）间的能量转移进行了研究，并探讨了能量关系、苯环上猝灭取代基团及空间效应对能量转移的影响。     

3,5—二溴水杨醛缩4—氨基安替比林与铜的荧光猝灭反应？…

研究了新荧光试剂３,５－二溴水杨醛缩４－氨基安替比林（简称：３,５－ＤＢＳＡＡＰ）与铜的荧光猝灭反应体系的最适宜的条件。３,５－ＤＢＳＡＡＰ发射强的荧光,λｅｘ／ｅｎ＝３９３ｎｍ／５１０ｎｍ。在ｐＨ９．０的ＮＨ３－ＮＨ４Ｃｌ缓冲介质中,Ｃｕ（Ⅱ）与３,５－ＤＢＳＡＡＰ在室温反应使其荧光猝灭。据此建立了铜的分析方法,线性范围为１．６×１０＾－５ｍｏｌ／Ｌ￣１．２×１０＾－７ｍｏｌ／Ｌ。用于测定人发中     

氰根桥联异多核配合物中的稀土离子的荧光光谱猝灭研究

合成了以氰根为桥联配体的两个异多核配合物，即ＳｍＦｅ（ＣＮ）６·４Ｈ２Ｏ（配合物１）和ＤｙＦｅ（ＣＮ）６·４Ｈ２Ｏ（配合物２）。对两配合物进行了元素分析和红外光谱表征。两配合物的荧光光谱表明：配合物１中Ｓｍ（Ⅲ）离子的荧光光谱发生了完全猝灭，而配合物２中Ｄｙ（Ⅲ）离子的荧光光谱却发生了选择性猝灭。简要讨论了其猝灭机理     

激光光散射及荧光光谱法研究金属离子对牛磺胆酸钠胶团性质的影响

采用激光光散射的方法，研究了Ｃａ￣（２＋）、Ｌａ￣（３＋）、Ｅｕ￣（３＋）存在下，ＮａＴＣ胶团及其与胆固醇、卵磷脂形成的混合胶团平均流体力学半径变化，发现金属离子能使胶团长大，并对胶团的结构及对胆固醇的增溶性有影响。以芘为荧光探针，研究了Ｃａ￣（２＋）、Ｌａ￣（３＋）离子对胶团内部微极性的影响，及通过Ｅｕ￣（３＋）的荧光光谱表征其配位场特征，证明金属离子与胆盐胶团间相互作用发生在胶团的表面。     

氯化钠介质中核酸对铈（Ⅲ）的荧光猝灭特性及其分布应用

在ｐＨ〈６．２的ＮａＣｌ介质中，Ｃｅ的荧光为核酸所猝灭。２０℃时小牛胸腺ＤＮＡ，鱼精子ＤＮＡ和酵母ＲＮＡ对Ｃｅ的荧光猝灭在０－６．０μｇ／ｍｌ的浓度范围内符合方程ｌｎ（Ｆ０／ｆ）＝ｋｃ＋ｂ，在３．０－８．０μｇ／ｍｌ范围内却符合主程Ｆ０／Ｆ＝ｋｃ＋ｂ。     

钌(Ⅱ)配合物作为氧光纤探头指示剂的研究

研究了ｐＨ、温度对钌（ Ⅱ） 的配合物Ｒｕ （ｂｐｙ）３ Ｃｌ２ 及Ｒｕ （ｐｈｅｎ）３ Ｃｌ２（ｂｐｙ ＝ ２ ,２′－ 联吡啶,ｐｈｅｎ ＝ １ , １０ － 邻菲罗啉） 荧光性质的影响, 并试验了Ｏ２ 对Ｒｕ （ｐｈｅｎ）３Ｃｌ２ 在水溶液、醋酸纤维素膜及多孔塑料光纤中的荧光猝灭情况．     

二苯乙烯荧光蓝—S荧光猝灭测定微量锌（II）

研究了二苯乙烯荧光蓝－Ｓ荧光猝灭测量微量锌（Ⅱ）的实验条件，在ｐＨ６．０的Ｈ３ＰＯ４－Ｈ３ＢＯ３－ＨＡｃ－ＮａＯＨ缓冲溶液中，试剂的最大激发波长λｅｘ＝３６７ｎｍ，最大荧光发射波长λｅｍ＝４５７ｎｍ；Ｚｎ（Ⅱ）与试剂生成的１：２的配合物使试剂的荧光强度减弱；利用荧光猝灭法测定微量锌（Ⅱ），线性范围为０￣０．８μｇ／１０ｍｌ；方法用于测量食品中、人发中的微量锌（Ⅱ），结果满意。     

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