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 .     

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.     

高锰酸钾直接氧化化学发光法测定甲磺酸酚妥拉明

基于盐酸介质中高锰酸钾直接氧化甲磺酸酚妥拉明产生化学发光这一现象,建立了一种简易、快速测定甲磺酸酚妥拉明的流动注射化学发光新方法.在优化的实验条件下,本法测定甲磺酸酚妥拉明的线性范围为0 05～6μg/mL,检出限为0 01μg/mL,对浓度为4 0μg/mL的甲磺酸酚妥拉明进行11次平行测定,得到相对标准偏差为3 0%.将本法用于针剂及尿样和血样中甲磺酸酚妥拉明的测定,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%.     

钴(Ⅱ)—硫氰酸铵—氯丙嗪分光光度法测定氯丙嗪的研究

本文报导了[Co(SCN)_4]~(2-)络阴离子与盐酸氯丙嗪形成兰色离子缔合物,以乙酸正丁酯作萃取剂的萃取-分光光度法测定氯丙嗪.该离子缔合物的最大吸收位于630nm处,其色泽至少可稳定4小时.氯丙嗪含量在0～400μg/ml间遵守比耳定律.用摩尔比法及连续变化法测得离子缔合物组成比Co(Ⅱ)∶SCN~-∶氯丙嗪为1∶4∶2.本法快速、准确、再现性好,曾用于药品制剂中氯丙嗪含量的测定,获得满意结果.     

流动注射化学发光法测定盐酸异丙嗪

在0.015mol/L的硫酸介质中,硫酸铈氧化盐酸异丙嗪产生化学发光,详细研究了反应的影响因素,在优化的实验条件下盐酸异丙嗪测定的线性范围为1.0×10-7～1.5×10-5g/mL,检出限为4.0×10-8g/mL,对5.0×10-6g/mL的盐酸异丙嗪进行11次测定,其RSD为2.6%.将本法用于盐酸异丙嗪药片的分析,并与药典规定的方法进行对照,结果令人满意.     

胶束增敏流动注射化学发光法测定头孢哌酮钠

基于在盐酸介质中 ,十二烷基苯磺酸钠 (SDBS)形成的胶束能增强高锰酸钾 头孢哌酮钠体系的化学发光这一现象 ,建立了一种简易、快速测定头孢哌酮钠的流动注射化学发光新方法 .在优化的实验条件下 ,头孢哌酮钠的线性范围为 0 0 1× 10 -6～ 15× 10 -6g/mL ,检出限为 3 9× 10 -9g/mL ,对 6 0× 10 -6g/mL的头孢哌酮钠进行11次平行测定 ,其RSD为 2 2 %.将本法用于合成样品及尿样中的头孢哌酮钠的测定 ,结果令人满意 .     

在线电生Mn（Ⅲ）流动注射化学发光法测定盐酸氯丙嗪

将恒电流电解产生Mn(Ⅲ)与流动注射化学发光法结合,基于盐酸氯丙嗪可被Mn(Ⅲ)氧化直接产生化学发光且发光强度与其浓度在一定范围内呈线性关系,从而建立了测定盐酸氯丙嗪的流动注射化学发光新方法.该法在盐酸氯丙嗪的浓度为2×10-7g/ml～1×10-4g/ml范围内呈线性关系,检测限为8×10-8g/ml.相对标准偏差为1.8%(n=11,1×10-6g/ml).该法具有简便、快速、重现性好等特点.成功地应用于片剂中盐酸氯丙嗪的测定.     

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.     

分光光度法测定废水中的间苯二酚

基于盐酸介质中,痕量间苯二酚能灵敏地催化溴酸钾氧化硫堇褪色的反应,建立了一种测定痕量间苯二酚的新方法.考察了反应的影响因素,研究了该催化反应的最佳条件及动力学参数.该法线性范围为0.02~0.30μg/10 mL,检测限为4.53×1-0 10g/mL.可用于水样中间苯二酚的测定.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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