β—环糊精色谱手性固定相的合成及性能表征

将β－环糊精（β－ＣＤ）键合到硅胶表面上制成薄层色谱手性键合固定相．用红外光谱、元素分析和热重分析测定键合相的化学组成和性质．对键合反应的工艺条件和键合相的色谱性能进行了较详细的研究．６对联萘酚类对映体在键合固定相薄层板和石油醚－乙酸乙酯－甲醇、石油醚－乙酸乙酯－乙腈溶剂系统中得到完全的分离．对映体的Ｒｆ值为１．１９～１．６８．     

一株地衣芽孢杆菌产生的生物表面活性剂

从大港炼油厂污水中分离到一株地衣芽孢杆菌（Bacillus licheniformis),其发酵上清液具有表面活性,可将水的表面张力由76．6mN/m降至35．5mN/m,发酵上清液经酸化沉淀并纯化后得到浅黄色固体物,其临界胶束浓度（CMC值）为30．0mg/L,该产物经聚丙烯酰胺凝胶电泳显示两条带;IR分析表明该物质含有肽键,内脂键及脂肪族侧链等官能团;GC－MS和PC分析表明,其疏水基半分子为β-甲基十四碳脂肪酸及β甲基十四碳脂肪酸及β－羟基十八碳脂肪酸;亲水基半分了含Asp,Glu,Ile,Val,Lys等氨基酸,该产物是一种由脂76肪酸和肽组成的脂肪类生物表面活性剂,它可以耐受高温和高浓度盐（尤其钙离子）,pH适应范围较广,对原油具有较强的乳化,增溶,脱附和降粘作用。     

超分子体系中的分子识别研究27.单-[6-(8-氧喹啉基)]-β-环糊精与模型底物分子识别的荧光光谱研究

采用荧光光谱滴定法测定了单－［６－（８－氧喹啉基）］－β－环糊精（２）与９ 种脂肪醇、３ 种脂肪酸和樟脑手性对映体在磷酸缓冲溶液中,２５℃时形成超分子配合物的稳定常数,并与母体β－环糊精（１）的分子键合能力进行了比较．研究结果表明,客体分子的结构与主体化合物空腔的尺寸匹配决定了所形成超分子配合物的稳定性,即范德华力和疏水相互作用是分子识别的主要驱动力,而氢键作用对超分子配合物的稳定性有重要影响．键合到β－环糊精主面的喹啉基不仅可以作为一种荧光光谱的探针,也可以识别客体分子的手性,其中对（＋ ）／ （－ ）－薄荷醇的对映体选择性高达４．４（ΔΔＧ°＝ － ３．６７ｋＪ·ｍ ｏｌ－ １）．     

短裙竹荪菌丝体糖蛋白DdGP-3P3纯化及性质研究

短裙竹荪菌丝体经热水抽提，乙醇分级沉淀，级分3经DEAE－Cellulose柱层析纯化得到短裙竹荪菌丝体糖蛋白DdGP-3P3。经测定该糖蛋白为均一组分，相对分子质量为113KDa，红外光谱呈现出典型的多糖吸收峰，含有β－型糖苷连接键。β－消去反应测定，该糖蛋白中糖和蛋白质的连续键为O－型糖肽键。纸层析和气相层析分析得知DdGP-3P3含有D－葡萄糖（D－glucose)、D-甘露糖（D－Mannose)和D－半乳糖（D－galactose)，其摩尔比为2．01：1．00：1．23。氨基酸分析表明它含有16种氨基酸。     

酵母葡聚糖的制备及理化性质

建立了一种用碱提取面包酵母中葡聚糖的方法,该法制得的酵母葡聚糖是以β－（１－３）－Ｄ－葡聚糖为主链,有约１２％的β－（１－６）分枝的均一性多糖,乙酸能作用β－（１－６）键,使粘度增加;葡聚糖酶能作用β－（１－３）键,使粘度下降。     

6-甲基-5-乙酰基-2-(3'-吡啶基)-4-硫酮-1,3-(4H)噁嗪的合成

本文合成新的3－（3’－吡啶甲酰胺基）硫羰基－2,4－戊二酮（2）,研究了化合物（2）在碱催化条件下的环化行为,结果表明离析物为6－甲基－5－乙酰基－2－（3＇－吡啶基）－4－硫酮－1,3－（4H）嗪（3）．经元素分析、IR及1HNMR确认了（2）及（3）的结构．     

大肠杆菌β－半乳糖苷酶基因在小菜蛾细胞中的表达

用携带大肠杆菌β－半乳糖苷酶（β－ｇａｌ）基因的杆状病毒转移载体．ｐＡｃ３６０－β－ｇａｌ与苜蓿银纹夜蛾核型多角体病毒（ＡｃＮＰＶ）ＤＮＡ经钙磷沉淀法共转染小菜蛾细胞系（ＢＣＩＲＬ－ＰＸ２－ＨＮＵ２,Ｐｘ）,利用Ｘ－ｇａｌ空斑检测分析,β－ｇａｌ基因成功地插入ＡｃＮＰＶ基因组中,得到重组病毒Ａｃ－β－ｇａｌ,重组病毒在Ｐｘ细胞中表达出受ＡｃＮＰＶ多角体蛋白基因启动子控制的具有生物活性的外源基因表达产物──β－ｇａｌ．     

吡啶甲酰硫脲嘧啶衍生物的合成及生物活性研究 (Ⅳ)

合成了10个未见文献报道的含取代嘧啶环的β－（或γ－）吡啶甲酰硫脲，结构经IR，^1HNMR,MS的元素分析测试等确证，初步生物活性测定结果表明，大部分目标化合物具有优良的除草活性，主要抑制双子叶植物（如油菜）的生长，而对单子叶植物（如玉米）具有较好的促进生长作用。     

谷氨酸热分解机理的研究

用热重（TG）、差热分析（DTA）和红外光谱分析（IR）方法测试了谷氨酸的热分解过程,用AMI方法全优化计算了谷氨酸及其热分解中间产物、产物分子的几何构型,得到其总能量,键级等数据．通过对实验结果和计算结果如键级、定域轨道能的分析,提出了谷氨酸的热分解反应机理．     

β－环糊精键合相薄层板的制备及其性能初探

采用不同粘合剂制备了β环糊精（β－ＣＤ）键合相薄层板，认为用有机粘合剂所制作的板牢固、重现性好．用甲醇—水为流动相分离了几种异体．     

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