铁(Ⅲ)-2.2′-联吡啶分光光度法测定维生素C和头孢氨苄

本文基于维生素Ｃ（ＶＣ）或头孢氨苄（ＣＥＸ）能定量将Ｆｅ（Ⅲ）－２．２′－联吡定还原为红色Ｆｅ（Ⅱ）－２．２′－联吡啶．建立了测定维生素Ｃ（ＶＣ）或头孢氨苄的新体系．并将方法用于制剂分析，取得较好的结果．     

铁（Ⅲ）—2.2‘—联吡啶分光光度法测定维生素C和头孢氨苄

本文基于维生素Ｃ（ＶＣ）或头耽氨苄（ＣＥＸ）能量定将Ｆｅ（Ⅲ）－２．２‘－联吡啶不原为红色Ｆｅ（Ⅱ）－２．２－联吡啶，建立了测定维生素Ｃ（ＶＣ）或头孢氨苄的新体系，并将方法用于制剂分析，取得较好的结果。     

维生素E的单扫描示波极谱法测定

以Ｃｅ（ＳＯ４）２为氧化剂，将维生素Ｅ氧化为其醌式化合物，然后在电极上进行阴极还原。在ＮＨ３．Ｈ２Ｏ－乙醇底液中，该醌式化合物于－０．２９Ｖ且个敏脱的还原峰，峰电流与维生素Ｅ浓度在１．２＊１０＾－５－４．５＊１０＾－１ｍｏｌ／Ｌ范围内呈良好的线性关系。将该法用测定维生素样品，得到了满意结果。     

绿色巴夫藻的培养生态条件试验

对绿色巴夫藻ｐａｖｌａｖａｖｉｒｉｄｉｓ进行了生态条件试验，认为该藻能适应光强５００－２５００Ｌｕｘ；适温范围５－３３℃，最适２０－２６℃；密度１．００５－１．０４０ｇ／ｃｍ３，最适１．００５ｇ／ｃｍ３；ｐＨ５－９都可以满足其正常生长，通过单因子和正交试验表明：培养液的较佳配方是在天然海水中加入（ＮＨ２）２ＣＯ－Ｎ２０ｍｇ／ｄｍ３，ＫＨ２ＰＯ４－ｐ１ｍｇ／ｄｍ３，ＦｅＳＯ４－Ｆｅ０．２ｍｇ／ｄｍ３，维生素Ｂ１１ｍｇ／ｄｍ３和维生素Ｂ１２０．００５ｍｇ／ｄｍ３。     

β－氨基－α－羟乙基二茂铁及其过渡金属配合物的合成与表征

用β－氨基－α－羟已基二茂铁与二价钴、镍、铜、锌、镉和汞的氯化物及醋酸铜在乙醇－水中反应，合成了七种新的配合物．探索出了适宜的反应条件，经元素分析，确定了新配合物的组成为：Ｌ２ＭＸ２·ｎＨ２Ｏ（Ｌ＝Ｆｃ─ＣＨＣＨ２ＮＨ２；Ｍ＝Ｃｏ２＋、Ｎｉ２＋、Ｃｕ２＋、Ｚｎ２＋、Ｃｄ２＋、Ｈｇ２＋，ｘ＝Ｃｌ－，ＣＨ３ＣＯＯ－；ｎ＝０，２，４）．通过红外光谱和核磁共振氢谱．对这些配合物的结构进行了表征．     

Tl_2Ba_2Ca_（n－1）Cu_nO_（2n＋4）超导体的能带结构

采用ＥＨＴ近似下的紧束缚能带结构方法，从能带结构、态密度和电荷分布等方面研究了Ｔｌ＿２Ｂａ＿２ＣｕＯ＿６，Ｔｌ＿２Ｂａ＿２ＣａＣｕ＿２Ｏ＿８和Ｔｌ＿２Ｂａ＿２Ｃａ＿２Ｃｕ＿３Ｏ＿（１０）超导体系的电子结构．从２－２－０－１，２－２－１－２到２－２－２－３相，费米能级附近的态密度及穿过费米面的能带数目相应增加．解释了随着单胞中Ｃｕ－Ｏ面数目的增加，超导转变温度升高的原因．     

维生素C测定方法的比较研究

通过对２．６－二氯酚靛酚滴定法和紫２外吸收法测定维生素Ｃ的比较研究，发现紫外吸收法抗干扰性强，回收率高，在０－８０μｇ／ｍｌ范围内线性较好，测定过程中较稳定，特别对于有颜色样品更优于滴定法。     

Fe^2＋和CO2对番木瓜ACC氧化酶活性的影响

１－氨基环丙烷－１－羧酸（ＡＣＣ）氧化酶催化ＡＣＣ氧化成为乙烯．通过ＤＥＡＥ－Ｓｅｐｈａｒｏｓｅ和Ｐｈｅｎｙｌ－Ｓｅｐｈａｒｏｓｅ柱层析后，ＡＣＣ氧化酶被纯化１９．５倍．在体外分析中，ＡＣＣ氧化酶活性被Ｆｅ２＋和ＣＯ２促进；Ｃｏ２＋、Ｎｉ２＋和Ｍｎ２＋抑制ＡＣＣ氧化酶的活性，但这种抑制效应能部分地被Ｆｅ２＋所拮抗．ＣＯ２对ＡＣＣ氧化酶活性的促进作用与反应体系中氧的浓度有关，在２１％的氧浓度下，ＣＯ２的促进作用较显著     

十四员四氮杂大环铜（Ⅱ）配合物参与的新型振荡化学反应

本文报道了一种新型振荡化学反应体系：ＮａＢｒＯ~３－ＣＨ~２（ＣＯＯＨ）~２－Ｈ~３ＰＯ~４ＣＵＬ（２＋）（Ｌ为５，７，７，１２，１４，１４一六甲基一１，４，８，１１一四氮杂环十四一４，１１一二烯）．研究了体系中各物种的初始浓度、温度、还原性物质（维生素Ｃ和草酸）、自由基抑制剂（丙烯腈、丙烯酰胺、Ｈ~２Ｏ~２）、Ａｇ＋、Ｈｇ（２＋）、Ｌ一半胱胺酸等因素对振荡的影响。     

含铜稀土复合氧化物的氧化活性

本文研究了不同配比电子型Ｎｄ－Ｃｅ－ＣＵ－Ｏ和空穴型Ｙ－Ｂａ－Ｃｕ－Ｏ系列样品的ＣＯ氧化活性、晶体结构、程序升温氧脱附和导电性的特征．结果表明：超导体ＹＢａ２Ｃｕ１．５Ｏ７－ｘ和半导体Ｃｅ２ＣｕＯｘ具有良好ＣＯ氧化转化率．后者在１２０℃时，ＣＯ达到完全转化．ＸＲＤ证明它为２ＣｅＯ２和ＣｕＯ混合晶相．由于导电和催化反应机制完全不同，活性高低和样品导电性能间没有发现直接关联．讨论了含Ｃｅ、Ｃｕ样品的活性中心，认为ＣｅＯ２为吸附氧和供氧中心，而Ｃｕｎ＋为ＣＯ活化和氧化反应中心，而前者可能为控制步骤．两者紧密协同，使Ｃｕ２＋的氧化还原循环更容易进行．     

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