流动注射化学发光测定盐酸多巴酚丁胺

基于盐酸多巴酚丁胺对高锰酸钾氧化鲁米诺产生的化学发光的增强作用建立了一种测定盐酸多巴酚丁胺的新方法.在优化的实验条件下,测定盐酸多巴酚丁胺的线性范围为1 0×10-3～0 5μg/mL,检出限(3σ)为5 0×10-4μg/mL,对浓度为0 4μg/mL的盐酸多巴酚丁胺进行11次平行测定,其相对标准偏差(RSD)为3 39%.将本法用于注射液、血样以及尿样中盐酸多巴酚丁胺的测定,结果令人满意.     

鲁米诺-铁氰化钾化学发光体系测定氯丙嗪

在碱性条件下,铁氰化钾氧化鲁米诺产生化学发光,氯丙嗪对该体系的化学发光有显著的增强作用.基于此,结合流动注射技术建立了测定氯丙嗪的化学发光新方法.该方法有很高的灵敏度,检测限为5 7×10-9g/mL(IUPAC),线性范围为1 0×10-8～1 0×10-6g/mL,对1 0×10-7g/mL氯丙嗪平行测定11次,其相对标准偏差为2 7%.     

铁氰化钾-罗丹明6G化学发光体系测定维脑路通

铁氰化钾在碱性条件下能氧化维脑路通产生微弱化学发光,罗丹明6G能大大增强此发光.基于此,建立了一种直接测定维脑路通的流动注射化学发光方法.该方法线性范围为5 0×10-7～5 0×10-5g/mL,检出限为1 0×10-7g/mL,对1 0×10-6g/mL维脑路通溶液连续11次测量的相对标准偏差为2 5%.利用该方法对维脑路通注射液及片剂含量的测定,结果令人满意.     

荧光分光光度法测定盐酸氯丙嗪

研究了盐酸氯丙嗪的荧光分光光度测定法 ,在优化的实验条件下 ,该法测定盐酸氯丙嗪的线性范围为 0～2 0× 10 -6g/mL ,检出限为 1× 10 -8g/mL ;对浓度为 5 0× 10 -7g/mL的盐酸氯丙嗪进行 11次平行测定 ,得到相对标准偏差为 2 5 %.将本法用于盐酸氯丙嗪片剂的分析并与药典规定的标准方法对照 ,结果令人满意 .     

高锰酸钾-硫代硫酸钠-延胡索乙素化学发光体系的研究

采用流动注射技术研究了酸性条件下 ,延胡索乙素与高锰酸钾和硫代硫酸钠的化学发光行为 ,对影响化学发光强度的诸因素进行了实验和探讨 ,建立了流动注射化学发光法测定延胡索乙素的新方法 .方法的检出限为 3× 10 - 8g/mL ,线性范围为 1.0× 10 - 7～ 8.0× 10 - 5g/mL ,对 4 .0×10 - 6g/mL延胡索乙素进行 11次平行测定 ,相对标准偏差为 1.6 % .方法用于药剂中延胡索乙素的测定 ,结果与药典标准方法测得值一致     

流动注射-化学发光法测定色氨酸

在酸性条件下,色氨酸对Ru(phen)32+-Ce(Ⅳ)反应体系化学发光有显著的增强作用,据此建立了流动注射-化学发光法检测色氨酸的新体系.对影响流动注射化学发光的各因素进行了实验研究,优化了反应条件和各项测定参数.结果表明,在优化条件下,色氨酸在7.5×10-8～8 0×10-6g/mL的浓度范围内发光强度与其浓度呈良好的线性关系,检测限(3σ)为5 16×10-8g/mL,对浓度为2 5×10-7g/mL的色氨酸进行11次平行测定,相对标准偏差(RSD)为2 2%.对合成样品中色氨酸测定的回收率在99 1%～100.8%之间,采样频率为90次/h.     

流动注射示差动力学化学发光法同时测定硅和磷

根据硅钼杂多酸和磷钼杂多酸能直接氧化Luminol产生化学发光 ,但两种杂多酸在相同条件时的形成速率有明显差异的特性 ,采用流动注射示差动力学分析技术 ,在硅、磷共存时 ,不经分离 ,实现对合成水样中硅和磷的同时测定 .该法测定硅、磷的检出限分别为 3 2× 1 0 -8g/mL和 6 0× 1 0 -8g/mL ;线性范围为 1 0× 1 0 -7～ 1 0× 1 0 -5g/mL和 2 0× 1 0 -7～ 8 0× 1 0 -6g/mL .相对标准偏差为 2 .8%和 3.6% .     

流动注射化学发光法测定异丙基肾上腺素

采用流动注射技术,研究了酸性条件下高锰酸钾与异丙基肾上腺素的化学发光行为,对影响化学发光强度的诸因素进行了实验和探讨,建立了流动注射化学发光法测定异丙基肾上腺素的新方法.方法的检出限为6×10-9g/mL,线性范围为2.0×10-8～1 0×10-5g/mL对4.0×10-7g/mL异丙基肾上腺素进行11次平行测定,相对标准偏差为1 5%.方法用于测定盐酸异丙基肾上腺素的含量,结果与药典标准方法相一致.     

铁氰化钾化学发光体系测定盐酸肾上腺素

基于铁氰化钾可以在碱性条件下直接氧化盐酸肾上腺素产生化学发光这一现象,并结合流动注射技术建立了一种直接测定盐酸肾上腺素的流动注射化学发光新方法.该方法的线性范围在5 0×10-8～5 0×10-6g/mL,检出限为2 8×10-9g/mL(3σ).对5 0×10-7g/mL的盐酸肾上腺素连续11次测定的相对标准偏差为3 2%.该法已成功测定了注射液中的盐酸肾上腺素含量,结果令人满意.     

聚茜素红膜修饰电极对多巴酚丁胺的测定研究

利用循环伏安法研究了多巴酚丁胺在聚茜素红膜修饰玻碳电极(PAR/GCE)上的电化学行为.实验结果表明:聚茜素红膜修饰电极对多巴酚丁胺具有良好的富集作用,在最佳实验条件下,采用示差脉冲伏安法,多巴酚丁胺的浓度与其氧化峰电流在5.0×10-8~7.0×1-0 5m ol.L-1范围呈良好线性关系,相关系数为0.9972,检测限为1.5×10-8m ol.L-1(信噪比为3).采用同一修饰电极连续测定40次或每次测定前重新修饰同一电极连续测定10次,标准偏差分别为3.2%和3.7%,表明该修饰电极具有良好的重现性.利用该修饰电极测定了多巴酚丁胺注射剂和血清样品中多巴酚丁胺的含量,获得了满意的实验结果.     

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