山西大学学报(自然科学版)27卷2004年总目次

本期特稿·期　页D-海因酶基因重组子的构建和酶的表达活性袁静明 ,封　霞 ,石亚伟 ( 1 .1 )…………………………………新型桥联双氨基脒基与环合环己二胺的合成胡静花 ,李剑峰 ,黄淑萍 ,刘滇生 ( 2 .1 1 1 )………………………基于模糊方法的非线性系统的可保性能设计贾新春 ( 3.2 2 1 )……………………………………………………3-溴咔唑胶态晶体悬浮液奇特的磷光发射梁文娟 ,王　煜 ,李军平 ,张　昭 ,晋卫军 ( 4 .331 )…………………·数学与计算机科学·一类二阶具无穷时滞泛函微分方程的周期解刘桂荣 ,杨明俊 ,李金仙 ,燕居让 ( 1 .…     

Brij30协同β-CD诱导α-溴代萘的室温磷光

建立了体积分数为 0 .2 %甲醇存在下 ,Brij3 0协同 β- CD不经除氧诱导 α-溴代萘发射强的室温磷光的分析方法 ,详细讨论了各种因素对光谱特性的影响 .实验表明 ,这是一均匀的乳状体系 ,发射光谱具有良好的精细结构( 497nm和 5 97nm ) ,体积分数为 2 %以下的甲醇对体系磷光影响不大 ,磷光强度不随放置时间变化 ,但却与环境温度之间存在很好的线性关系 :Ip=8.68× 10 51/ T- 2 .4× 10 3.     

N-乙基七咔唑树状分子的合成、光物理性能、电化学性能及双光子吸收性能的研究

无定形N-乙基七咔唑树状分子通过溴化反应和乌尔曼偶联反应合成。运用密度泛函理论（TD-DFT）,在B3LYP/6-31G(d,p)水平上,理论计算出分子的HOMO、LUMO能级。对七咔唑的光物理性能进行了研究,化合物在292nm产生最大吸收峰,最大发射峰在393nm。利用循环伏安法对化合物的电化学性能进行了研究,七咔唑产生可逆的双氧化峰,起始氧化势为0.74V.七咔唑的双光子吸收截面为13.86GM.     

N-乙基咔唑树状分子的合成及光电性能

采用溴化反应和乌尔曼偶联反应合成了无定形N-乙基咔唑树状分子.运用密度泛函理论(TD-DFT),在B3LYP/6-31G(d,p)水平上,通过理论计算得到分子的HOMO能级为-5.16eV、LUMO能级为-1.59eV,与实验值非常接近.对N-乙基咔唑树状分子的光物理性能进行了研究,发现化合物在292nm处产生最大吸收峰,其最大发射峰在394nm处.利用循环伏安法对化合物的电化学性能进行了分析,发现N-乙基咔唑树状分子产生了可逆的双氧化峰,起始氧化势为0.74V.N-乙基咔唑树状分子的双光子吸收截面为13.86×10-50cm4.s.(photon)-1.     

流体室温磷光法测定痕量钛（Ⅳ）

基于曲拉通X-100和HAc-NaAc(pH=5．9)存在，不除氧条件下，曲拉通X-100能增敏钛(Ⅳ)-4，5-二溴苯基荧光酮流体室温磷光信号的增强效应，建立了曲拉通X-100增敏4，5-二溴苯基荧光酮的超高灵敏度流体室温磷光增强法测定痕量钛(Ⅳ)的新方法。钛(Ⅳ)量为3．2-6．4pg／mL与△Ip值成线性关系，其工作曲线的回归方程△Ip=-31．12 147．2CTi (pg／mL)，r=0．9997，检出限为1．38pg／mL。该方法用于人发和茶叶中钛含量的测定，结果满意。     

罗丹明6G-二溴荧光素发光分子纳米微球标记凝集素及其分析应用

基于外重原子微扰剂LiAc存在下,罗丹明6G(R)-二溴荧光素(D)SiO2发光纳米微球(R-D-SiO2)在醋酸纤维素膜(ACM)上可分别发射R(λex/λem=481/648nm)和D(λex/λem=457/622nm)强而稳定的室温光信号.用R-D-SiO2标记麦胚凝集素(WGA),在ACM上采用R-D-SiO2-WGA-ALP(直接法)亲和吸附反应方式,研究了利用亲和吸附固体基质室温磷光法(AA-SS-RTP)测定碱性磷酸酶(ALP)的条件和分析性能.研究结果表明,对0.4ml点样量,R-D-SiO2-WGA-ALP法的检出限为0.41agspot-1(457/622nm)与0.44agspot-1(481/648nm).用本法和ELISA方法对比测定了血清试样中ALP的含量,结果相吻合.本研究表明,可分别采用D或R的磷光激发/发射波长进行测定,不仅提高了AA-SS-RTP的灵活性,而且适应性更广.     

新型三蝶烯衍生物室温磷光材料的合成与表征

为得到一种新的纯有机室温磷光材料,本文采用咔唑与溴作为修饰基团,设计并合成了一种新型的基于三蝶烯分子的电子给体-电子受体(D-A)型纯有机磷光材料Cz-Br。利用TD-DFT计算从理论上对分子的轨道结构进行了分析;利用核磁共振氢谱、核磁共振碳谱、质谱、X-射线单晶衍射等方法对其结构进行了相关表征;利用紫外-可见光谱仪、稳态/瞬态荧光光谱仪等仪器对其光物理性质进行了研究与探讨。结果表明,在室温下目标化合物用紫外光激发后在无定形态就具有肉眼可见的延迟发光现象,在晶体形态具有较长寿命(0.212 s)的室温磷光性质,可为目前的有机室温磷光材料设计提供参考。     

不对称树枝状咔唑类衍生物的合成

以1,4-二溴苯和1,8-二碘联苯为原料分别与咔唑发生乌尔曼偶联反应制得两种相应的成对偶联分子,用NBS作为溴化试剂与这两种分子反应制得新型的多溴代产物:3,3′,6-三溴-1,4-双咔唑基苯、3,3′,6,6′-四溴-1,4-双咔唑基苯和3,3′,6-三溴-1,8-双咔唑基联苯.该溴化物与咔唑在铜催化下发生乌尔曼偶联反应制得3种新颖的树枝状咔唑类衍生物:3,3′,6-三(N-咔唑基)-1,4-双咔唑基苯、3,3′,6,6’-四(N-咔唑基)-1,4-双咔唑基苯、3,3′,6-三(N-咔唑基)-1,8-双咔唑基联苯.通过核磁、质谱分别对所合成的化合物进行了表征.     

咔唑席夫碱衍生物的制备与表征

以咔唑为母体,合成了(E)-4-(N-乙基咔唑-3-甲亚胺基)-安替比林希夫碱(R1)和2-氨基-3-(E)-(N-对苯甲基咔唑基-甲亚胺基)-马来腈席夫碱(R2).利用CCD、~1HNMR、MS、HFT-IR等对产物进行了表征.X-射线单晶衍射表明:R1晶体属单斜晶系,P2(1)/n空间群,晶胞参数a=10.538(3),b=18.350(6),c=11.122(3);α=90°,β=97.067(7)°,γ=90°,Z=4.R2晶体属三斜晶系,空间群P-1(2),a=91.542(3),b=92.884(2),c=113.576(2);α=11.367(2)°,β=11.367(2)°,γ=13.754(3)°,Z=4.R1和R2最大吸收波长分别为λ_(max)=396.1 nm和λ_(max)=351.1 nm.R1吸收荧光发射波长(甲醇溶液)为458.7 cm.     

N-甲基-3-溴咔唑与β-环糊精包结作用研究

运用荧光光谱法，通过考察N-甲基-3-溴咔唑在水、乙醇、β-环糊精、甲基-β-环糊精、羟丙基-β-环糊精、γ-环糊精等溶液中的荧光光谱及荧光强度的变化，认为N-甲基-3-溴咔唑与β-环糊精可能的包结方式为轴向包结，而且光谱特性与微环境极性有很大的关系。     

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.     

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.     

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     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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Brief Introduction to “Journal of Jilin University( Science Edition) ”

<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has