HPLC法测定人参花中绿原酸的含量

建立以高效液相色谱法测定人参花中绿原酸含量的方法．色谱柱为ODS—C18（250mm×4．6mm,5μm）,流动相为乙腈-0．5％磷酸溶液（30：70）,流速为1．0mL／min,检测波长为326nm,柱温为25℃．绿原酸在0．4～4．0μg范围内与峰面积积分值呈良好的线性关系（R=0．9991）;平均回收率为99．28％,RSD=1．46％（n=6）．本法简便、准确、重现性好、可用于人参花茶的质量控制和评价．     

菊三七根中化合物seneciphyllicacid和senecinicacid的含量测定

目的：采用HPLC法测定菊三七根部seneciphyllicacid和senecinicacid的含量．方法：建立HPLC法测定菊三七根部seneciphyllicacid和senecinicacid的含量．色谱柱为AcclaimC18色谱柱（4．6mm×250mm,5μm）,流动相为甲醇-0．1％甲酸水（40：60,v·v-1）,流速为1．0mL·min-1,柱温为30℃,紫外检测波长为220nm．线性范围：Seneciphyllicacid为0．1～0．8mg·mL-1（相关系数r=0．9997）;senecinicacid为0．1～1．5mg·mL。（相关系数r=0．9998）．结果：测得菊三七根部seneciphyllicacid和senecinicacid的含量分别为2．9613mg·g-1、0．9542mg·g-1;RSD分别为1．34％、1．28％;平均回收率为98．84％、99．16％,RSD为1．94％、1．51％．结论：该方法快速、简便、准确度高,可为开发利用菊三七提供研究基础．     

HPLC法测定小儿氨酚黄那敏颗粒剂中噩乙酰氨基酚含量

目的：用反相高效液相色谱法测小儿氨酚黄那敏颗粒中对乙酰氨基酚含量。方法：采用C18色谱柱,流动相为甲醇：0．05mol／L醋酸铵溶液（15：85）,检测波长为257nm。结果：对乙酰氨基酚在6-361．Lg／ml浓度范围内线形关系良好,r=-0．9999,平均回收率99．28％（n=5）,RSD=0．62％（n=5）。结论：该方法简单、快速、准确,可以有效地控制药品质量。     

RP-HPLC法测定人血草中黄连碱和白屈菜红碱的含量

目的：建立人血草干燥全草中黄连碱和白屈菜红碱含量的测定方法．方法：采用反相HPLC法．色谱柱为YMC—PackODS—AA（4．6mm×250mm,5肚m）,以乙腈一水（0．2％磷酸＋0．2％三乙胺）体系梯度洗脱,检测波长280nm,流速1．0mL·min-1,柱温30℃．结果：黄连碱在13．24～264．8μg·mL叫质量浓度范围内面积与浓度呈良好的线性关系（r=0．9997）;加样回收率为99．4％,RSD为1．1％（n=6）．白屈菜红碱在6．36～127．2μg·mI．一质量浓度范围内面积与浓度呈良好的线性关系（r=0．9998）;加样回收率为101．6％,RSD为1．2％（n=6）．结论：本法简单、准确,重复性好,可用于人血草药材的质量．     

贯叶连翘中金丝桃素与黄酮（槲皮素）的含量测定

目的：采用高效液相色谱法测定贯叶连翘中的金丝桃素、黄酮（槲皮素）的含量。方法：色谱柱为Phenomenex LunsC18（4．6mm×150mm,5μm）,检测波长分别为590nm和360nm,流动相分别为甲醇：0006mol／L磷酸氢二钠溶液（87：13）和甲醇：水：磷酸（55：44．8：0．2）。结果：线性范围分别在0．027-0．135μg和0．052～0．26μg内良好,回收率分别为：98．39％（n=5）和98．85％（n=5）。RSD分别为0．78％和1．02％。结论：方法能用于贯叶连翘中的金丝桃素、黄酮（槲皮素）的含量测定。关键词：贯叶连翘;槲皮素;金丝桃素;含量测定     

川芎中药配方颗粒中咖啡酸的HPLC-ECD测定

建立测定川芎中药配方颗拉中咖啡酸的高效液相色谱电化学分析法,并用该方法测定2种不同批号的川芎中药配方颗拉。采用反相高效液相色谱电化学检测法,以Zorbax SB-C18（150mm×4．6mm,5．0m）为色谱柱;甲醇-4％醋酸为流动相,梯度洗脱,流速为1．0mL．min-1：检测电压为0．7V,柱温为30℃。结果：咖啡酸浓度在2．4-8．4μg·mL^-1（r=0．9997）范围内线性关系良好,平均加样回收率（n=6）为98．9％（RSD=2．1％）。该法是一种快速,灵敏,准确的分析方法,可以为川芎中药配方颗拉的质量控制提供科学依据。     

毛细管色谱法测定头孢美唑中的有机溶剂残留量

采用毛细管气相色谱法，以叔丁基甲醚为内标，用Agilent DB-200毛细管气相色谱柱和氢焰离子化检测器．同时测定了头孢美唑中甲醇、乙醇、二氯甲烷、三乙胺、乙酸乙酯、苯甲醚等6种有机溶剂残留量．6种溶剂的线性范围分别为0～480μg／mL（r=0．9996）、0—800μg／mL（r=0．9994）、0～96μg／mL（r=0．9990）、0～800μg/mL（r=0．9993）、0～800μg／mL（r=0．9995）、0～800μg／mL（r=0．9993）；平均回收率分别为100．1％、100．5％、101．2％、100．1％、100．7％和100．4％；相对标准偏差分别为0．90％、1．30％、1．18％、1．23％、1．52％、1．41％（n=9）．     

HPLC测定中药萝芙木中育亨宾的含量

采用HPLC法测定中药萝芙木中育亨宾的含量．色谱条件：C18（5um，14．6mm×150mm）色谱柱，以甲醇：水（0．004mol／L二乙胺）=（65：35）为流动相，检测波长278nm．结果表明：育亨宾在0．512～2．56ug质量范围内与峰面积呈良好的线性关系（r=0．9998），平均回收率为95．52％，相对标准方差RSD=1．18％（n=10）．本法简便、快速，准确可靠，可用于中药萝芙木的质量控制．     

丹参营养器官中丹参酮ⅡA的高效液相色谱法分析

目的：建立测定丹参各营养器官中丹参酮ⅡA的高效液相色谱分析法,并用该方法测定丹参各营养器官中丹参酮ⅡA含量。方法：采用反相高效液相色谱法,以Zorbax SB-C18（150mm×4．6mm,5．0m）为色谱柱,柱温为30℃;甲醇：水=75：25为流动相;流速：1．0mL·min^-1;检测波长：268nm。结果：丹参酮ⅡA浓度在4．4～70．4μg·mL^-1（r=0．9996）范围内线性关系良好,平均加样回收率（n=6）为99．7％（RSD=2．1％）。结论：该法是一种快速、灵敏．准确的分析方法,可以为丹参的种植,采收．品质鉴定、扩展药用部位以及控制丹参药材质量提供理论依据。     

多索茶碱注射液的质量控制

规范多索茶碱注射液检验标准操作程序。在原有检验操作程序的基础上,建立高效液相法测定多索茶碱注射液有关物质的检测方法。含量测定采用Phenomenex-C18（250×4．60mm5μm）色谱柱,流动相：乙腈一磷酸盐缓冲盐pH=5．8（18：82）,流速0．8mL·min^-1,检测波长273nm,进样量10laL,RSD=0．11％。有关物质测定采用Phenomenex-c18（250×4．60mm5ttrn）色谱柱,流动相：乙腈一水（V（以乙腈）：V（水）=（35：65））,流速0．8mL·min^-1,检测波长273nm,进样量10μL。本方法简便、快速、结果准确、可靠。     

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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