邻苯二酚紫作萃取剂金属离子的反相微胶团萃取

研究了以邻苯二酚紫（ＰＶ）为萃取剂，用阳离子表面活性剂在混合有机溶剂（正己烷：环己醇＝９：１）中形成反相微胶团萃取金属离子与邻苯二酚紫（ＰＶ）螯合物的条件，探讨了ＨＣｌ介质中溶液酸度，萃取剂和表面活性的浓度条件对金属离子的反相微胶团分配行为的影响，该体系可用于Ｚｒ＾４＋－Ａｌ＾３＋，Ｚｒ＾４＋－Ｇｅ＾４＋定量萃取分离，初步探讨了反相微胶团萃取的萃取机理。     

某些二茂铁甲氨基烷氧基硅烷的反相色谱行为

用反相薄层色谱（ＲＰ－ＴＬＣ）探索了某些二茂铁甲氨基烷氧基硅烷的反相高效液相色谱（ＲＰ－ＨＰＬＣ）分离条件。两种不同系列的二茂铁甲氨基烷氧基硅烷在ＲＰ－ＴＬＣ和ＲＰ－ＨＰＬＣ中均得到满意分离，并探讨了它们在反相色谱中保留特性与分子结构及流动相组成的关系。     

贻贝Mytilus edulis磷脂成分的分析

对浙江产紫贻口的总指和磷脂进行了提取和定量,并分别用薄层层析法、气相色谱法对磷脂的组分、总脂和磷脂的脂肪酸组成进行了分析,结果表明：在收秋旺季,贻贝的总脂含量为2．15％－2．68％,磷脂含量在5．02％C－6．95％范围内,占总胎的21．00％－27．30％磷脂组分以PC和PE为主;与大豆和蛋黄的磷脂相比,贻贝总脂和磷脂含有更多的高不饱和脂肪酸,此外贻贝磷脂小的脂肪酸不饱和度及EPA与DHA之和要高于总脂。     

RP－HPLC法快速测定哒螨酮

研究了反相液相色谱法（ＲＰ－ＨＰＬＣ法）测定哒螨酮的条件。固定相为ＹＷＧ－Ｃ＿１８，甲醇水溶液（９０：１０）为流动相，流量为１ｍｌ／ｍｉｎ，检测波长为２２０ｎｍ。在上述条件下，哒螨酮线性范围为０～２５０ｎｇ／２５ｍｌ，检测限为０．２５ｎｇ／２５ｍｌ，相对偏差为０．１６，回收率为９９．６％～１０６．２％。该方法简便、快速、灵敏、准确，可用于农药厂样品的测定。     

海藻糖与脂质膜相互作用的研究

以蛋黄卵磷脂 (EPC)为模型 ,通过测定相变发生时卵磷脂吸热量的变化及卵磷脂脂肪酸链CH2 基团的对称伸展振动频率变化 ,阐明了海藻糖对蛋黄卵磷脂 (EPC)脂质膜相变的影响 ,并对其作用机理进行探讨 .FTIR红外光谱分析表明 ,海藻糖之所以能在相变温度以上将脂质膜维持在双层相 ,是由于海藻糖和磷脂酰胆碱的头部基团形成氢键 ,这是一种直接相互作用的结果     

反相高效液相色谱法分析辅酶Q10

本实验应用色谱技术,建立了辅酶Q10的检测方法。采用反相高效液相色谱法,以十八烷基硅烷键舍硅胶为固定相,以无水乙醇－甲醇（1：1）为流动相;柱温35℃,检测波长275nm。结果表明：辅酶Q10的含量为6mg／g。     

HPLC法测定邻苯二酚醚化的相转移催化合成产物的研究

在反相C18色谱柱上建立了测定邻苯二酚醚化的相转移催化合成产物的高效液相色谱方法。流动相为甲醇(A)和含0．2％醋酸水(B)的混合溶液，A：B=80：20(v／v)，流速1．0mL／min，紫外检测波长270nm，内标物为苯乙酮。应用该法分析测试了不同反应条件下实验室合成产物共50多个样品，结果满意。     

Cu（Ⅱ）和Fe（Ⅲ）-EDTA螯合物的反相离子对高效液相色谱分离和测定

建立了一种同时测定Fe（Ⅲ）和Cu（Ⅱ）-EDTA螯合物的反相离子对高效液相色谱法．以乙二胺四乙酸二钠盐（EDTA）作柱中衍生剂，研究了分离、测定Ve（Ⅲ）和Cu（Ⅱ）的EDTA螯合物的最佳条件．在Waters Spherisorb ODS2色谱柱上，以甲醇-水（体积比40：60）作流动相（pH=5．29），在265nm处检测，Fe（Ⅲ）和Cu（Ⅱ）的最小检出限分别为0．053和0．176ng．常见阳离子和阴离子均不干扰测定，用该方法测定了人发中铁和铜的含量．     

IMI及其微生物转化产物5-hydroxy IMI的HPLC分析

研究了烟碱类杀虫剂IMI及其微生物转化产物5-hydroxy IMI的反相高效液相色谱分析方法．采用Zorbox OSD反相柱，水和乙腈（75：25）（v／v）为流动相，流速为1mL／min，检测波长为269nm，IMI和5-hydroxy IMI得到较优分离．在0．5～50mg／L的浓度范围内，两种物质的色谱峰面积和浓度之间呈线性关系，IMI和5-hydroxy IMI的标准工作曲线分别为y=112．23x-1．7775和y=98．039x-17．508；相关系数为0．9999和0．9997．转化产物的样品中IMI和5-hydroxy IMI添加的回收率分别为99．3％和97．4％．     

反相胶束软模板法合成Ag2S半导体纳米棒

利用反相胶束软模板法合成了直径30－50nm，长约1.5μm，晶胞常数a=0.423nm,b=0.693nm,c=0.786nm，单斜结构的Ag2S多晶纳米棒，并对纳米棒的产生机理进行了初步探讨。     

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