用单扫示波极谱法测定微量氟哌啶醇

建立了ＮＨ３－ＮＨ４Ｃｌ底液中，以单扫示波极谱法测定微量氟哌啶醇的方法。氟哌啶醇在该底液中有一灵敏导数极谱波，峰电位－１．５６Ｖ（ｖｓ．ＳＣＥ）。峰电流与氟哌啶醇的浓度在０．２～３．０μｍｏｌ·Ｌ＾－１范围内成正比。最低检测限为０．０８μｍｏｌ·Ｌ＾－１。测定了针剂和片剂中氟哌啶醇的含量，结果满意。对氟哌啶醇在汞电极上的电还原性质进行了探讨。     

胆绿素的极谱分析研究

介绍了ＮａＯＨ溶液中（ｐＨ＞１１）利用胆绿素的阳极波的极谱分析方法，研究发现胆绿素在－０．４０Ｖ（ＶＳ．ＳＣＥ）左右产生一灵敏、稳定的极谱阳极波，该波的二阶导数与胆绿素溶液的浓发在２×ｌ０￣（－７）～１．８×ｌ０￣（－６）ｍｏｌ·Ｌ￣（－１）范围内成线性关系，其检测限为８×ｌ０（－８）ｍｏｌ·Ｌ￣（－１），并且在胆红素或０．０２ｍｇ·Ｌ￣（－１）白蛋白共存时无干扰，可用于胆绿素的测定，并对胆绿素的极谱阴极波和循环伏安图进行了研究，考察了胆绿素在－０．４０Ｖ（ＶＳ．ＳＣＥ）处的可逆波和－０．９８Ｖ（ＶＳ．ＳＣＥ）处的过氧化氢催化波的性质，对胆绿素的电化学反应提出了可能的机理。     

铜,锌—四（4—三甲胺基苯基）卟啉的极谱研究

铜，锌与四（４－三甲胺基苯基）卟啉络合物极谱波均匀络合吸附波，峰电位分别为Ｅｐｃｕ＝－１．２２Ｖ（相对于ＳＣＥ），Ｅｐｚｎ＝－１．４７Ｖ，测定了络合比及条件稳定常数。     

铜、锌－四（4－三甲胺基苯基）卟啉的极谱研究

铜、锌与四（４－三甲胺基苯基）卟啉络合物极谱波均为络合吸附波，峰电位分别为Ｅ＿（ｐＣｕ络）＝－１．２２Ｖ（相对于ＳＣＥ），Ｅ＿（ｐＺｎ络）＝－１．４７Ｖ．测定了络合比及条件稳定常数。     

安眠酮的吸附极谱波研究

在ｐＨ４．５缓冲溶液中，安眠酮在－１．１７Ｖ处产生一灵敏吸附极谱波，利用此波可测定微量安眠酮，线性范围为１．０×１０＾－７￣１．０×１０＾－６ｍｏｌ·Ｌ＾－１，检测下限为９．０×１０＾－８ｍｏｌ·Ｌ＾－１，所提出的方法用于片剂及血清中安眠酮的测定，结果满意。     

4－（8－氨基喹啉－5－偶氮）－苯磺酸钠的极谱行为研究

研究了４－（８－氨基喹啉－５－偶氮）－苯横酸钠（ＳＡＯＡＢＳ）的极谱行为。在０．０２ｍｌ／ＬＮＨ＿３·Ｈ＿２Ｏ－０．３６ｍｏｌ／ＬＮＨ＿４Ｃｌ的缓冲溶液中，ＳＡＱＡＢＳ产生两个明晰的阴极化极谱波，其二次导数波的峰电位分别为－０．５２Ｖ和－１．３０Ｖ（Ｖｓ．ＳＣＥ）。用ＳＡＱＡＢＳ的第一个波作为定量分析的基础，其线性范围为１．０×１０￣（－６）～８．０×１０￣（－５）ｍｏｌ／Ｌ。氧不干扰ＳＡＱＡＢＳ的测定。还研究了ＳＡＱＡＢＳ的电极过程及反应机理。     

CH_2FCF_3－CH_3CHF_2和CH_2FCF_3－丙酮两二元系的气相

在自制的气相ｐＶＴｘ关系测定装置中，通过测定加料总量（ｎ＿Ｔ）、加料组成（ｘ）以及处于平衡时的温度（ｔ）和压力（ｐ），测得了１，１，１，２．四氟乙烷－１，１－二氟乙烷在２５．００，３０．００，４０．００，５０．００，６０．００和７０．００℃以及１，１，１，２－四氟乙烷－丙酮在２５．００，４０．００，５５．００和７０．００℃时的气相ｐＶＴｘ数据。使用改进的ＰＲ状态方程，成功地关联了实验数据。     

几种含硫有机化合物与铜的络合物的极谱行为研究

高胱氨酸、６－巯基嘌呤和硫尿嘧啶均能与铜离子作用而在汞电极上产生两个吸附波、在柠檬酸钠溶液中，高胱氨酸与铜的络合物在－０．０６Ｖ处产生的阳极化波较为灵敏，其检测限为２×１０＾－８ｍｏｌ／Ｌ高胱氨酸，线性范围为８×１０－６～１×１０＾－５ｍｏｌ／Ｌ．６－巯基嘌呤和硫尿嘧啶在乙二胺介质中与铜产生的络合物波较好，前者在－０．８３Ｖ处和后者在－０．４４Ｖ处的阴极波较适合于分析，它们的检测限分别为８×１０＾     

钼（VI）－高铁试剂－溴化十六烷基三甲胺体系络合物吸附波的研究

在ｐＨ４．４的ＨＣＯＯＨ－ＨＣＯＯＮａＡ介质中，钼（ＶＩ）与高铁试剂（Ｆｅｒｒｏｎ）生成络合物，在ＣＴＭＡＢ存在下，于－０．４８Ｖ（ｖｓ．ＳＣＥ）出现一尖锐、灵敏的极谱波。钼含量在４．２×１０－８～５．７×１０－６ｍｏｌ／Ｌ范围内与峰高呈线性关系。用多种电化学方法研究了极谱波的性质及电极反应机理，证明络合波为吸附波。峰电流由中心离子Ｍｏ（ＶＩ）还原产生。络合物组成为Ｍｏ（ＶＩ）：Ｆｅｒｒｏｎ＝１：１。试验了三十多种离子对峰电流的影响。方法用于自来水中钼的测定，结果满意。     

Pb（Ⅱ）－Cup络合物导数极谱波研究

在ＰＨ为５～６的ＨＡｃ－六次甲基四胺溶液中，Ｐｂ（Ⅱ）与铜铁试剂产生的络合物在单扫描示波极谱仪上可观察到一灵敏的导数极谱波，其峰电位为－０．６４Ｖ（ＶＳ，ＳＣＥ），峰电流与铅浓度在９．６×１０－８～５．８×１０－６ｍｏｌ·Ｌ－１范围内成线性关系，检测限为１．９×１０－６ｍｏｌ·Ｌ－１，用以测定铅锌矿中铅的结果良好．同时研究了形成铅－铜铁试剂络合物吸附波的条件和性质，并用极谱法测定其络合比为１：１．     

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