无机离子在硅胶薄层上的色谱行为研究

以甲基异丁基甲酮（ＭＩＢＫ）－甲酸（ＦＡ）为流动相，对一些无机离子在硅胶薄层上的色谱行为进行了研究，得出了无机离子的Ｒ＿Ｆ值与流动相中强极性溶剂甲酸的体积百分浓度Ｃ＿ｐ之间的关系以及所用流动相的溶剂性质参数Ｂ值．利用该流动相体系对部分多元离子混合液进行了分离．     

借IAP—4S和高效液相色谱分离和测定铱和铑

借离子对反相高效液相色谱分离了铱（Ⅳ）和铑（Ⅲ）的２－（２－咪唑偶氮）－苯酚－４－磺酸（ＩＡＰ－４Ｓ）螯合物,并于５６０ｎｍ波长处检测之。研究了Ｉｒ（Ⅳ）－和Ｒｈ（Ⅲ）－ＬＡＰ－４Ｓ螯合物分离的最宜条件。于Ｎｕｃｌｅｏｓｉｌ Ｃ８柱上,用含７．５×１０＾－３ｍｏｌ／ＬＫＨ２ＰＯ４－Ｎａ２ＨＰＯ４缓冲剂（ｐＨ７．５）和５．５×１０＾－３ｍｏｌ／Ｌ溴化四丁基铵的甲醇－水（４０：６０,ｖ／ｖ）作流动相,     

过渡金属乙酰丙酮配合物引发淀粉与烯基单体接枝共聚

研究了Ｍｎ（Ⅲ）、Ｃｏ（Ⅲ）、Ｃｒ（Ⅲ）和Ｖ（Ⅳ）的乙酰丙酮配合物引发淀粉与ＭＭＡ、ＡＮ、ＡＭ和ＡＡ接枝共聚合反应的引发活性。实验表明，４种引发体系中，Ｍｎ（ａｃａｃ）３的引发活性最佳，它可以有效地引发淀粉与上述４种单体的接枝共聚合反应，并获得较高的ＰＧ；Ｃｏ（ａｃａｃ）３和Ｃｒ（ａｃａｃ）３仅对水溶性烯基单体ＡＭ、ＡＡ有良好的引发活性；Ｖｏ（ａｃａｃ）２对４种单体的引发活性均较低。４种单体中，水     

盐酸西替利嗪的高效液相色谱法分析

本文报道了盐酸西替利嗪的高效液相色谱分析方法。在硅胶柱上以乙腈∶水∶稀硫酸９３∶６．６∶０．４为流动相,于２３０ｎｍ处进行紫外检测,盐酸西替利嗪与〔（４－氯苯基）苯基甲基〕哌嗪完全分离。该方法适用于盐酸西替利嗪的有关物质检查与含量测定。     

紫外光检测和离子色谱法测定无机阴离子研究

本文提出了采用紫外光度检测的高效离子色谱法同时测定样品中的Ｃｌ－，ＮＯ２－，ＮＯ３－，Ｉ－和ＳＣＮ－等无机阴离子的方法．使用季铵型低容量阴离子交换剂键合球形硅胶（Ｖｙｄａｃ３０２ＩＣ）色谱柱，以３ｍｍｏｌ／Ｌ邻苯二甲酸（ｐＨ４．３，用四硼酸钠调节）为流动相，不仅可较好地分离各种阴离子，还可采用紫外光度检测器间接检测分离后的阴离子．为食品生产的质量控制和监督提供了一个快速简便的新方法．     

离子抑制色谱法测定甘草酸

本文研究了离子抑制色谱测定甘草及甘草酸（ＧｌｙｅｙｒｒｈｉｉｃａｃｉｄＧＡ）粗品中ＧＡ含量的方法，选择色谱分离条件，讨论流动相组成对分离的影响，实验表明：该方法简便、快速。准确，可用于ＧＡ的快速测定。     

二羰基乙酰丙酮铑对芳基烯烃氢甲酰化反应的催化作用

研究了二羰基乙酰丙酮铑Ｒｈ（ａｃａｃ）（ＣＯ）２对苯乙烯，Ｐ－甲基苯乙烯氢甲酰化反应的催化性能．在常压下，Ｒｈ（ａｃａｃ）（ＣＯ）２和Ｐ（ＯＰｈ）３、ＰＰｈ３、Ｐｈ２Ｐ（ＣＨ２）ｎＰＰｈ２（（ｎ＝２，３）组成的体系具有较好活性．在双齿配体存在下，２－芳基丙醛的选择性可达９５％以上．     

借IAP-4S和高效液相色谱分离和测定铱和铑（英文）

借离子对反相高效液相色谱分离了铱（Ⅳ）和铑（ＩＩＩ） 的２（２咪唑偶氮）苯酚４磺酸（ＩＡＰ４Ｓ）螯合物,并于５６０ ｎｍ 波长处检测之．研究了Ｉｒ（ Ⅳ）和Ｒｈ（ Ⅲ）ＩＡＰ４Ｓ螯合物分离的最宜条件．于Ｎｕｃｌｅｏｓｉｌ Ｃ８ 柱上,用含７．５×１０－３ ｍｏｌ／ＬＫＨ２ＰＯ４Ｎａ２ＨＰＯ４缓冲剂（ｐＨ７．５） 和５．５ ×１０－３ ｍｏｌ／Ｌ溴化四丁基铵的甲醇水（４０：６０,ｖ／ｖ） 作流动相,流速为０．８ ｍＬ／ｍｉｎ． 检测限为１．３ ｎｇ 铱和１．５ ｎｇ 铑．     

以氯磺酚S反相高效液相色谱法分离测定铝（Ⅲ）、铬（Ⅲ）、铌（Ⅴ）、铜（Ⅱ）

用氯磺酚Ｓ作柱前显色剂以反相高效液相色谱法测定铝（Ⅲ）、铬（Ⅲ）、铌（Ⅴ）、铜（Ⅲ）离子，固定相为Ｓｈｉｍ－ｐｏｃｋＯＤＳ柱（１５０ｍｍ×６ｍｍ）．流动相为含有６×１０￣（－２）ｍｏｌ／Ｌ溴化四乙铵，１×１０￣（－２）ｍｏｌ／Ｌ乙酸盐缓冲溶液（ｐＨ３．５）的乙腈（３８％）－四氢呋喃（２％）－水（６０％）溶液。流量１．０ｍｌ／ｍｉｎｎ。用紫外可见分光光度检测器于５７０ｎｍ处进行检测，在此条件下，铝（Ⅲ）、铬（Ⅲ）、铌（Ⅴ）、铜（Ⅱ）得到很好的分离，方法具有高灵敏度和良好的选择性，可用于水、大米、面粉和人发分析。     

醇盐受控水解法制备YSZ超细粉及其表征

利用正丙醇锆受控水解方法制备ＹＳＺ粉．研究在正丙醇锆－硝酸钇－乙酰丙酮体系中，Ａｃａｃ／Ｚｒ（ｍｏｌ），Ｈ２Ｏ／Ｚｒ（ｍｏｌ）对正丙醇锆水解影响．采用ＴＧ－ＤＴＡ，ＸＲＤ，Ｒａｍａｎ光谱，ＢＥＴ，ＴＥＭ等手段对ＹＳＺ粉体进行表征．发现本体系获得的粉体立方相成相温度可低至３５０℃，颗粒度在１０ｎｍ左右     

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