二阶导数光谱法同时测定铝和钛的研究

建立了二阶导致光谱法同时测定铝和钛的新方法，该法简便、快速、灵敏度高．方法对钛线性范围为０～０．６４μｇ／ｍｌ，对铝线性范围为０～０．４８μｇ／ｍｌ．应用于冶金样品中铝、钛的测定，结果满意．     

有机相酪氨酸酶生物传感器

基于有机介质中水分对酪氨酸酶电极电流信号的增强作用，构建了一个测定有机介质中微量水分的有机相生物传感器，该传感器可测定乙醇中体积分数０．０５％～１．００％水，检出限为体积分数０．００％水，采用ＦＩＡ系统可测定乙腈中体积分数为０．１％～１．０％水检出限为体积分数０．０１％水，精密度高。     

双体系双波长荧光光度法同时测定色氨酸和酪氨酸的研究

本文提出双体系双波长荧光测定方法，用于色氨酸，酪氨酸的同时测定，结果满意，测定范围分别为０￣１０．０μｇ／ｍＬ和０￣５．０μｇ／ｍＬ。     

固定化酶管安培法快速测定青霉素

整个测定系统由固定化青霉素酶管、流动注射分析仪及碘分子检测池组成。测定原理基本上同碘量滴定法，即青霉素经酶管转化为青霉素噻唑酸，该酸与碘分子发生定量反应，剩余的碘用电化学方法检测。实验表明：测定线性范围为０．０５～０．９０ｍｏｌ／ｍ￣３（取样４０μＬ），线性相关系数为０．９９２。对０．６ｍｏｌ／ｍ￣３的青霉素反复测定１０次，平均值为６２．４９μＡ，变异系数为１．２０％。当青霉素浓度低于１．０ｍｏｌ／ｍ￣３时，条件在一定范围的波动（磷酸盐浓度为０．０５～０．２５ｍｏｌ／ｍ￣３，ｐＨ为６．０～７．５，测定温度１５～２５℃），对测定结果几乎没有影响，测定速率可达每小时１２０个样品。此系统不变，在室温下（８～２０℃）使用时，每天约测４００个样品，酶管使用３０ｄ，未见活力下降。４℃下保存１０个月，酶管活力未见明显下降。     

催化荧光法测定痕量锰

在酸性介质中及活化剂氨三乙酸存在下，锰对高碘酸钾氧化还原型二氯荧光素的反应有催化作用，据此提出了催化荧光法测定痕量锰的新方法．方法的线性范围为０．０４～１．０ｎｇ／ｍｌ，检出限为０．０１３ｎｇ／ｍｌ．常见离子基本上不干扰测定．将方法用于人发、面粉、蔗糖、扒皮鱼、自来水中锰的测定，回收率为９５％～１０４％．     

pH法测定复合氨基酸铜中的氨基酸含量

用ＥＤＴＡ做掩蔽剂，调节ｐＨ值至７加入甲醛，用ＮａＯＨ溶液滴至ｐＨ＝８．７，测定复合氨基酸含量．测定快速、准确，标准偏差０．３６，相对标准偏差０．５８％，氨基酸的回收率大于９５．２％．     

溶出伏安法测定痕量锌

报道了一种测定痕量锌离子的灵敏的电分析方法。在ｐＨ＝４．５的２．０×１０￣（－２）ｍｏｌ／ＬＨＡｃ－ＮａＡｃ溶液中，锌－钛铁试剂络合物在－０．８１Ｖ产生一灵敏的吸附还原峰，峰电流与锌离子的浓度在０．０５－２．０μｇ／ｍＬ范围内成线性关系，最低检测限为０．０１μｇ／ｍＬ．拟定了测定痕量锌的方法，应用于粮食中锌的测定，结果令人满意．     

毛细管气相色谱法测定706代血浆中残留甲醇、乙二醇的含量

本文采用内标法，以丙二醇为内标物，应用上分１００２型气相层析仪测定羟乙基淀粉代血浆中残留甲醇和乙醇的含量。选用天津试剂二厂弹性石英交联聚乙二醇—２０Ｍ毛细管色谱柱，以氢火焰离子化检测器检测，氮气为载体，分流进样．当甲醇和丙二醇内标物浓度比为０．０２：１～０．３２：１，乙二醇和丙二醇内标物浓度比为１．０：１～４．０：１时，被测物质峰面积与浓度呈线性关系，测定了甲醇和乙二醇的相对定量校正因子．甲醇平均测定回收率为９８．７９％，相对标准偏差ＣＶ＝０．０１３％，乙二醇的平均回收率为９７．７７％，ＣＶ＝０．０１１％．     

联机卡尔曼滤波极谱法同测腺嘌呤和黄嘌呤

在０．０８ｍｏｌ／ＬＮａＡｃ－０．０２ｍｏｌ／ＬＨＡｃ缓冲溶液中，利用铜与腺嘌呤的配位反应定量测定了腺嘌呤．腺嘌呤浓度在１．０×１０－６～１．０×１０－５ｍｏｌ／Ｌ范围内与一阶导数波高呈良好的线性关系，但在此底液中，黄嘌呤、尿酸等对腺嘌呤的测定有干扰，为此采用联机卡尔曼滤波方法同时测定了腺嘌呤和黄嘌呤．实验表明，当腺嘌呤和黄嘌呤两组分相对浓度比在１５∶１～３∶７范围内时，能达到同时测定的目的．     

荧光素-番红花红T能量转移体系的研究及其作为核酸荧光探针的应用

研究了以能量转移作为核酸荧光探针的可能性，提出利用能量转移体系测定ＤＮＡ的新方法．该方法灵敏、快速，重现性好，ＤＮＡ测定的线性范围是０．０５～１０ｍｇ／Ｌ，检测限为０．０４７ｍｇ／ＬＣＴＤＮＡ（ｎ＝１１）．     

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.     

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