5－Br－PADN双峰双波长法测定铁（Ⅲ）

研究５－Ｂｒ－ＰＡＤＮ与铁（Ⅲ）的显色反应，在ｐＨ９．０～９．４范围内，当有１０％ＳＤＳ存在时，铁（Ⅲ）与５－Ｂｒ－ＰＡＤＮ形成１：４的稳定配合物。λ＿（ｍａｘ）为５３４ｎｍ，ε为５．１３×１０￣４Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１），铁（Ⅲ）浓度在０～１２．５×１０￣（－４）ｇ／Ｌ范围内符合Ｂｅｅｒ定律，用双峰双波长法测定茶叶中痕量铁（Ⅲ），结果满意。     

5—Br—PADN双峰双波长法测定铁（III）

研究５－Ｂｒ－ＰＡＤＮ与铁（Ⅲ）的显色反应，在ｐＨ９．０￣９．４范围内，当有１０％ＳＤＳ存在时，铁（Ⅲ）与５－Ｂｒ－ＰＡＤＮ形成１：４的稳定配合物。λｍａｘ为５３４ｎｍ，ε为５．１３×１０＾４Ｌ·ｍｏｌ＾－１·ｃｍ＾－１，铁（Ⅲ）浓度在０￣１２．５×１０＾－４ｇ／Ｌ范围内符合Ｂｅｅｒ定律，用双峰双波长法测定茶叶中痕量铁（Ⅲ），结果满意。     

用诱导剂在PVA介质中研究锰(Ⅱ)催化氧化灿烂绿显色反应

提出锰（Ⅱ）在诱导剂存在下，ＰＶＡ介质中用高碘酸钾氧化灿烂绿染料的显色反应电子光谱，反应的最佳条件（ｐＨ＝５．７，ＫＩＯ４和灿烂绿浓度各为２．００×１０－３ｍｏｌＬ－１，４．５８×１０－２ｍｏｌＬ－１等）．在３．５～６．５ｍｉｎ之间吸光度与时间呈线性关系，Ｍｎ（Ⅱ）离子浓度在０～０．０６μｍｏｌＬ－１范围内遵守比尔定律，测得摩尔吸光系数ε４７０＝７．２×１０６，是一超灵敏显色反应，显色稳定性较好．     

PAN－S分光光度法测定钢样中微量锰的研究

研究了１－［（２－吡啶）］偶氮－２－萘酚－磺酸（简称ＰＡＮ－Ｓ）与锰显色反应的最佳条件。在ｐＨ９硼砂－ＨＣ１介质中，锰与ＰＡＮ－Ｓ形成１：２红色配合物，λｍａｘ＝５３５ｕｍ，ε５３５＝２．６６×１０４Ｌ·ｍｏｌ－１·ｃｍ－１．０～５０μｇＭｎ／２５ｍＬ符合比尔定律。本法可满意地用于测定碳素比色钢、低合金钢和碳素钢。     

2－（5－硝基－2－吡啶偶氮）－5－二甲氨基苯胺与钴高灵敏显色反应的研究

报道了新试剂２－（５－硝基－２－吡啶偶氮）－５－二甲氨基苯胺（记作５－ＮＯ２－ＰＡＤ－ＭＡ）与钴（Ⅱ）的高灵敏显色反应．实验表明，在ｐＨ４．０～６．２ＨＡｃ－ＮａＡｃ缓冲介质中，试剂可与钴（Ⅱ）形成紫红色配合物，当用高氯酸酸化后配合物转换成一种蓝色稳定的双质子化型体，最大吸收峰位于６１３ｎｍ，摩尔吸光系数为１．１３×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，钴（Ⅱ）浓度在０～３．６μｇ／１０ｍＬ范围内遵守比耳定律．所拟方法已成功地应用于ＶＢ１２针剂、分子筛样品中钴（Ⅱ）含量的测定     

银丝汞膜电极伏安法测定药品中头孢氨苄

本文以银丝汞膜电极为工作电极，在０．１０ｍｏｌ／ＬＮａＯＨ溶液中经１００℃水浴加热２０ｍｉｎ后，用线性扫描伏安仪制作ＣＥｘ的阴极还原曲线，其峰电位－０．７５Ｖ（ＶＳＡｇ／ＡｇＣｌ），浓度在２．０×１０－７～２．１０×１０－６ｍｏｌＬ－１；２．０×１０－６～２．０×１０－５ｍｏｌＬ－１范围内，峰高与浓度呈线性关系，其线性回归方程ｉ（格）＝１．２８６×１０６ｃ－０．１５０４（ｒ＝０．９９５８，ｃ：２．０×１０－５～２．０×１０－６ｍｏｌ／Ｌ）；ｉ（格）＝１．２３×１０６＋０．７８７０（ｒ：０．９９７３，ｃ＝２．０×１０－６～２．０×１０－７ｍｏｌＬ－１）．方法应用于胶囊中ＣＥｘ的含量测定并与药典法相比，结果基本一致．此外利用循环伏安等方法对其降解产物电化学行为进行初探，该体系属于准可逆吸附体系．     

高效液相色谱法测定1－硝基蒽醌和1－氨基蒽醌

探讨了１－硝基蒽醌（１－ＮＯ＿２ＡＱ）和１－氨基蒽醌（１－ＮＨ＿２ＡＱ）同时测定和分别测定的色谱条件，提出了在Ｓｈｉｍ－ｐａｃｋＣＬＳＳ－ＳＩＬ色谱柱上，以正庚烷－１，４二氧六环－乙酸乙酯（６５：３５：５（Ｖ／Ｖ）为流动相，流量为１．５ｍｌ／ｍｉｎ，柱温４０℃，以分光光度检测器于２５４ｎｍ处检测时，４ｍｉｎ内使１－ＮＯ＿２ＡＱ与１－ＮＨ＿２ＡＱ分离；５ｍｉｎ使１－ＮＨ＿２ＡＱ与杂质分离；７ｍｉｎ可使１－ＮＯ＿２ＡＱ与杂质分离的高效液相色谱分析法。其绝对检出下限１－ＮＯ＿２ＡＱ为０．０１２μｇ，１－ＮＨ＿２ＡＱ为０．０２６μｇ，变异系数分别为１．１％和０．９６％，回收率分别为９９．７％和１００．２％。     

在阴离子表面活性剂存在下3,5-diCl-DMPAP分光光度法测定微量锌

在阴离子表面活性剂ＳＬＳ存在下，研究了２－（３，５－二氯－２－吡啶偶氮）－５－二甲氨基酚（简称３，５－ｄｉＣｌ－ＤＭＰＡＰ）与锌反应的适宜显色条件．结果表明，在ｐＨ为６．０～１０．０范围内，锌（Ⅱ）与试剂形成１∶２的紫红色配合物．配合物的最大吸收波长位于５６５ｎｍ处，表观摩尔吸光系数为１．２×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，锌浓度在０～６．０μｇ／１０ｍＬ范围内遵守比尔定律．方法已用于地质化探样品和镁合金中微量锌的测定     

锌—色氨酸配合物的吸附伏安特性及其应用

研究了锌－色氨酸－硼砂体系的吸附伏安特性．在０．０１ｍｏｌ／Ｌ硼砂底液中（ｐＨ＝９．５），锌－色氨酸配合物在－１．１５Ｖ（ＶＳ．ＳＣＥ）出现一灵敏吸附还原峰．通过对该峰的性质及反应机理的研究，确认此峰为配合物吸附还原峰，吸附反应物为锌与色氨酸形成的１∶２配合物，电极反应为二电子还原，在合适的条件下，该还原峰峰高与锌浓度在１．０×１０－７～７．５×１０－６ｍｏｌ／Ｌ范围内成线性关系，检测下限为１．５×１０－８ｍｏｌ／Ｌ，用此法测定生物样品中的微量锌，得到满意结果     

合成的具有天然锰矿晶型的MnO2的循环伏安研究

使用合成的钡镁锰矿（ＴＯＤＯＲＯＫＩＴＥ）、碱硬锰矿（ＨＯＬＬＡＮＤＩＴＥ）型的ＭｎＯ２及电解ＭｎＯ２修饰碳膏电极，报告了它们在＋１．０Ｖ￣－１．０Ｖ电压范围和０．１Ｍ ＫＣｌ溶液中的循环伏安图。Ｔｏｄｏｒｏｋｉｔｅ和ｈｏｌｌａｎｄｉｔｅ的循环伏安图相似，都没有显明的电流峰。而电解ＭｎＯ２的循环伏安图中，有两个阳极峰（＋０．１Ｖ，＋０．５ＶｖｓＳＣＥ）两个阴极峰（０．０Ｖ，－０．１５Ｖ ｖｓ ＳＸ     

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