纳米银胶与蛋白质的相互作用及应用

在水溶液中，纳米银粒子的紫外吸收峰随牛血清蛋白(BSA)浓度的增加而红移并且吸光度降低，表明纳米银粒子能与BSA发生相互作用，红外光谱也证实这种作用的存在。水溶液中，纳米银粒子具有一个较弱的反二级散射光谱，BSA存在下，其反二级散射大大增强并产生相应的散射光谱，最大波长位置位于470nm。BSA在O—8μg/ml范围内与散射峰强度△I成正比。方法有很高的灵敏度，可用于痕量BSA的测定。     

基于金纳米通道膜检测牛血清白蛋白的研究

以聚碳酸酯超滤膜为基膜,采用化学镀的方法在聚碳酸酯膜纳米通道阵列内镀金．对金纳米通道表面进行氯离子修饰,在电场作用下电解质离子通过纳米通道时产生稳定的电流,当牛血清白蛋白（BSA）加入含BSA抗体的进样池后,与溶液中的牛血清白蛋白抗体分子形成BSA／抗体复合体,该大体积的复合体对电流产生一定的阻碍作用,引起相应的电流降,基于此发展了纳米通道检测BSA的传感技术．电流降低值与BSA浓度在3．64×10^-8～5．46×10^-7mol／L范围内具有线性关系,检测限（3S／N）为1．93×10^-8mol／L．     

光散射浊度体系测定硫酸根的方法

对聚乙烯醇—硫酸钡乳浊体系的共振光散射光谱、二级光散射光谱与反二级光散射光谱的光谱特性进行研究, 并开展了用此体系测定环境水样中硫酸根的应用研究, ３ 种散射光谱法在０ ～０－２４ｍｇ／ｍＬ的硫酸根浓度范围内的标准曲线均呈良好线性关系．     

苋菜红-蛋白质体系的共振瑞利散射光谱及其应用

研究了酸性条件下染色剂苋菜红-蛋白质体系的共振瑞利散射光谱。在pH=3．80的Clark-Lubs缓冲介质中,苋菜红与蛋白质通过分子间作用力形成复合物,使最大波长为523nm的共振光散射光谱得到加强,这种增强的共振光散射用于鸡蛋清试样中总蛋白的测定,其线性响应范围为1．5～5．0mg／L,检测限为209μg／L。该方法的稳定性及选择性良好,适用于微量蛋白质分析。     

硝化纤维素-甘油-丙酮-苯纳米微滴体系的光谱特性研究

10mg/mL硝化纤维－58．2mg/mL甘油－3mL丙酮－3mL苯体系为白色不透明体系；6．7mg/mL硝化纤维－38．9mg/mL甘油－3mL丙酮－6mL苯纳米微滴体系呈黄紫色；5．7mg/mL硝化纤维－33．3mg/mL甘油－3mL丙酮－7．5mL苯纳米微滴体系呈红紫色；5．0mg/mL硝化纤维－29．1mg/mL甘油－3mL丙酮－9．0mL苯纳米微滴体系呈蓝紫色，它们具有不同的紫外吸收光谱和共振散射光谱。由紫外吸收光谱无法确定纳米微滴的颜色，而共振散射光谱可判定纳米微滴的颜色。根据纳米微粒的界面超分子能带原理解释了纳米微滴体系的呈色现象。     

酸性红-CTMAB-TX体系与DNA作用的共振光散射光谱的研究及分析应用

研究了脱氧核糖核酸（DNA）与阴离子染料酸性红（FA）及阳离子表面活性剂溴化十六烷基三甲铵（CTMAB）和非离子型表面活性剂Triton X-100（TX）作用的共振光散射光谱的特征考察了各种影响因素，在优化条件下确立了共振光散射强度与鱼精DNA和小牛胸腺DNA以及变性后的鱼精DNA和小牛胸腺DNA浓度之间的关系，相应的线性范围分别为0.026-7．00mg／L；0．025-7.00mg／L；0．032-6．00mg／L；0．031-8．00mg／L，相关系数为0．9991；0.9996；09981；0.9996，检出限为7．0μg／L；6．0μg／L；11．0μg／L；12．5μg／L，基于共振光散射的增强，建立了一种测定DNA的新方法．图4，表3，参7．     

三溴偶氮胂共振光散射法定量测定蛋白质

首次研究了三溴偶氮胂和蛋白质作用的共振光散射光谱．实验发现，在pH3．5～4．7的范围内，蛋白质的加入导致三溴偶氮胂共振光散射增强，并在345和410nm处产生两个增强峰，其强度与蛋白质的浓度成线性关系，据此建立了一种定量测定蛋白质的共振光散射新方法．采用五水平正交设计对反应参数进行选择．方法的线性范围为2．5～30．0μg／mL(BSA)和2．5～40．0μg／mL(HSA)，对应的检测限分别为46．5和43．8ng／mL．该方法已用于实际样品中蛋白质含量的测定，结果令人满意．     

钼(Ⅴ)-硫氰酸盐-碱性三苯甲烷染料体系的二级散射光谱及其分析应用

研究了钼（Ⅴ）硫氰酸盐配阴离子与结晶紫、乙基紫、孔雀石绿、亮绿及碘绿等碱性三苯甲烷染料的离子缔合配合物的二级散射和反二级散射光谱．考察了影响因素、适宜条件和分析化学特征．提出了用二级散射光谱法测定钼的新的高灵敏分析方法,可用于钢铁中痕量钼的测定．     

盐酸苯海拉明的二级散射法测定

提出了硫酸颜色反应用于盐酸苯海拉明的二级散射测定新方法，盐酸苯海拉明本身为微弱散射光物质，在浓硫酸作用下生成为具有强散射光的物质，具有二级散射特征，在494.0nm处具有最大二极散射光，该条件下盐酸苯海拉明在0.2-10μg/mL范围内与体系的二级散射光强度线性关系良好，方法检测限为2μg/L，相对标准偏差RSD=1.3%(n=5)。     

液相碘化亚汞纳米粒子的共振散射和荧光光谱

近来,金属纳米粒子、氧化物纳米粒子等的瑞利散射光谱研究表明,较大粒径纳米粒子及界面的形成是导致瑞利散射光信号增强的根本原因,某些纳米粒子存在共振散射效应,光源与检测器、分子吸收、纳米粒子的共振散射效应与呈色效应是产生瑞利散射光谱峰的三个主要原因[1～3].     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

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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