阿霉素的荧光测定研究

提出荧光法测定阿霉素的新方法。阿霉素在硫酸介质中发生脱水反应生成强荧光的脱水物，反应产物荧光强度在７．３×１０＾－１０～２．２×１０＾－８ｍｏｌ／Ｌ浓度范围与阿霉素含量成正比，检出限为２．１×１０＾－１０ｍｏｌ／Ｌ。用于测定血清和尿液中阿霉素的回收率分别为８９％～９５％和９６％～１０１％，体液中常见金属离子，如Ｆｅ＾３＋、Ｃｕ＾２＋、Ｍｇ＾２＋、Ｃａ＾２＋、Ｍｎ＾２＋等，不干扰测定结果。     

马钱子碱在碳糊电极上的吸附伏安测定法研究

以石墨电极为基体制成碳糊电极,研究了马钱子碱在该电极上的测定方法,在０．０１ｍｏｌ·Ｌ＾－１Ｈ２ＳＯ４底液中,选择阳极电位为０．３５Ｖ,峰电流与马钱子碱的浓度在１．０×１０＾－７－１．０×１０＾－４ｍｏｌ·Ｌ＾－１范围内呈良好的线性关系,该法的检测下限为５．０×１０＾－８ｍｏｌ·Ｌ＾－１,回收范围为９５．８－１０５．９％中变量的取值和相对标准偏 ３．３％。本方法准确、快速、简便。     

邻菲咯啉钌（Ⅱ）化学发光分析测定环丙沙星

试验表明,在０．０１ｍｏｌ·Ｌ＾－１ ＮａＡｃ－ＨＡｃ（ｐＨ５．０）底液中,环丙沙星能增强Ｃｅ（Ⅳ）氧化Ｒｕ（ｐｈｅｎ）２／３＋检测限为４．４×１０＾－８ｇ·ｍＬ＾－１,其相对标准偏差分别为２．８％和３．３％,该法用于片剂中环丙沙星含量的测定,获得满意结果。     

生物碱—半导体场效应传感器的研制及应用

研制了生物碱（秋水仙碱或毛果芸香碱）－半导体场效应传感器，并测得了器件的浓度线性范围：２．５０×１０＾－＾５－４．００×１０＾－＾３ｍｏｌ／Ｌ（秋水仙碱）；９．９０×１０＾－＾５－５．０５×１０＾－＾３ｍｏｌ／Ｌ（毛果芸香碱）。该传感器可应用于药物制章占秋水仙碱的测定，方法简便，效果良好。     

水溶液中β—环糊精与苯甲酸雌二醇包络反应的光谱研究…

在硫酸酸性人质和溴化十六烷基三甲铵存在下用紫外吸收，荧光光变法对β－环糊精与苯甲酸雌二醇的主客体包络反应及协同增敏作用机理进行了研究，提出了水溶液中测定ＥＢ的荧光光度新方法、灵敏度高，检出限为４．９×１０＾－９ｍｏｌ．ｌ＾－１，其线性范围为５．３×１０＾－９－２．０×１０＾－６ｍｏｌ．Ｌ＾－１，方法的相对标准偏差为１．３％。应用本法于苯甲酸雌二醇注射液样品中ＥＢ的测定，结果满意。     

利用植酸对磺基水杨酸铁的脱色作用比色法测定植酸含量

研究了磺基水杨酸铁同植酸的转络反应所引起溶液颜色的变化，并把该转络反应用于植酸含量的比色测定。溶液酸度为ＰＨ２．５－３时，平衡混合物最大吸收波长为５００ｎｍ，植酸浓度为０．１５１５×１０＾－３－０．１５１５×１０＾－５ｍｏｌ／Ｌ区间内的光吸收符合朗伯比尔定律，该法回收率为１００．６７％。     

茂钛络合物—纳米NaH体系催化苯乙烯氢化

茂钛络合物,以纳米ＮａＨ为助催化剂催化苯乙烯氢化,初速率为３．７×１０＾３－８．３×１０＾３ｍｏｌ／（ｍｏｌ．ｍｉｎ）（Ｈ２／Ｔｉ）,催化效率为６．４×１０＾３－１８．５×１０＾３ｍｏｌ／ｍｏｌ（Ｈ２／Ｔｉ）,均高于文献的其他２茂钛催化体系,考察了不同温度对催化反应的影响,反应温度在２７５－３１５Ｋ时,活化能为２０．３ｋＪ／ｍｏｌ,与催化体系活性高一致。     

液相外延制备磷化镓红色发光材料

采用旋转舟液相外延生长系统获得ＧａＰ外延片，由它制得ＧａＰ红色发光二级管，其外量子效率可高达１０％，ＧａＰ红色发光材料的最佳生长条件下下：在Ｐ型熔体内，Ｚｎ的摩尔分数为４．０×１０＾－４，Ｇａ２Ｏ３的摩尔分数为１．０×１０＾－３，在Ｎ型熔体内，Ｔｅ的摩尔分数为８．０×１０＾－５－１．０×１０＾－４，Ｐ型外延层厚度为５０μｍ左右。     

十二钨硅酸及其6DMF,8DMSO加合物的标准生成焓测定

通过一系列滴定量热测定，求得了２９８．１５Ｋ时十二钨硅酸及其６ＤＭＦ、８ＤＭＳＯ加合物的标准生成焓，其数值分别为－（１３．１４±０．０１）×１０＾３ＫＪ·ｍｏｌ＾－１、－（１３．６１±０．０１）×１０＾３ＫＪ·ｍｏｌ＾－１及－（１３．８６±０．０１）×１０＾３ＫＪ·ｍｏｌ＾－１。     

四氢呋喃在苯中聚合向醋酸酐链转移的研究

本文研究了以苯为溶剂，在醋酸酐存在下，采用乙酰基四氟硼酸盐ＣＨ３ＣＯＢＦ４为催化剂进行四氢呋喃（ＴＨＦ）聚合及链转移的反应，经测定，在１５℃和２１℃下的表观聚合速度常数Ｋｐ分别为７．０３×１０＾－３和１０．１８×１０＾－３Ｌ／ｍｏｌ．ｓ表现链转移速度常数的Ｋｔｒ分别为７．３９×１０＾－４和１２．０１×１０＾－４Ｌ／ｍｏｌ．ｓ     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

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