山西产蒲公英药材品质研究

目的：采用HPLC法测定山西产蒲公英中咖啡酸与绿原酸的含量。方法：采用十八烷基硅烷键合硅胶为填充剂,以磷酸（含0.1%磷酸的水溶液）与乙腈的体积比（85∶15）为流动相,流速1.0mL/min,检测波长322nm。结果：咖啡酸的线性范围为0.8μg/mL～4.0μg/mL（r=0.9966）,绿原酸的线性范围0.4μg/mL～2.0μg/mL（r=0.9997）;平均回收率：咖啡酸98.73%,RSD为2.49%,绿原酸98.82%,RSD为2.71%。结论：咖啡酸和绿原酸质量分数为0.074%、0.028%,品质优良。     

HPLC法测定银杏叶提取物中总黄酮醇苷的含量

目的：建立测定银杏叶提取物中总黄酮醇苷的含量测定方法.方法：用HPLC方法对测定银杏叶提取物中总黄酮醇苷进行含量测定研究.色谱柱采用Diamonsil C18（200×4.6 mm 5μm）,以甲醇-0.4%磷酸溶液（52∶48）为流动相,检测波长为360 nm;流速为1.0 mL/min.结果：槲皮素在0.174-0.870μg线性关系良好（r=0.999 8,n=5）,山柰素在0.117-0.585μg线性关系良好（r=0.999 8,n=5）,异鼠李素在0.040 8-0.204μg线性关系良好（r=0.999 9,n=5）;槲皮素、山柰素、异鼠李素的平均回收率（n=5）分别为99.96%、99.24%、100.46%.结论：本方法操作简便,重现性好,专属性强,可作银杏叶提取物中总黄酮醇苷的质量控制方法.     

秋葵荚中两种黄酮苷的分离鉴定及含量测定

目的：首次从秋葵荚中分离制备异槲皮苷和槲皮素-龙胆二糖苷对照品并应用高效液相色谱法建立秋葵荚中两种黄酮苷含量的测定方法.方法：色谱柱：Welch Materials XB-C18（4.6 mm×250 mm,5μm）;流动相∶甲醇-水（42∶58）;检测波长：256 nm;流速：1 mL.min-1;柱温：30℃.结果：异槲皮苷和槲皮素-龙胆二糖苷进样量分别在0.165μg～0.825μg和0.155μg～0.775μg范围内呈良好的线性关系（r=0.9999,r=0.9995）,平均回收率（n=6）分别为99.2%、100.3%.结论：该方法简便、准确,重复性好,可用于测定秋葵中异槲皮苷和槲皮素-龙胆二糖苷的含量.     

HPLC法测定蒙药吉祥安坤丸中羟基红花黄色素A的含量

目的：建立蒙药吉祥安坤丸中羟基红花黄色素A的高效液相色谱含量测定方法.方法：采用Diamonsil C18柱（4.6 mm×250 mm,5μm）为分离柱，流动相为甲醇-乙腈-0.7%磷酸溶液（26：2：72），检测波长为403 nm,流速1.0 mL·min-1，柱温30℃.结果：羟基红花黄色素A在0.068～0.408μg范围内与峰面积值线性关系良好（r=0.9997）.平均回收率为101.68%，RSD为1.68%.结论：本法简便、准确、重复性好，为吉祥安坤丸的质量标准制定及含红花蒙成药制剂的定量分析提供参考.     

青海荨麻中一种主要药用成分的含量测定

目的：采用高效液相色谱法测定青海宽叶荨麻中槲皮素的含量.方法：采用Hypersil C18色谱柱（4.6mm×250mm,5μm）;流动相：甲醇-水-磷酸（45∶55∶0.05）,检测波长：360nm,流速：1.0mL.min-1,柱温：30℃.结果：槲皮素在5.46～54.6μg.mL-1的浓度范围内呈良好线性关系（r=0.9993）,回收率为99.3%（RSD=2.0%,n=6）.结论：本方法简便、快速、准确、灵敏度高、重现性好,可为青海宽叶荨麻质量评价提供有效手段.     

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。     

HPLC法测定保和片中橙皮苷的含量

目的：建立保和片中橙皮苷的HPLC分析方法.方法：采用Diamonsil C18（5μm×250mm×4.6mm）色谱柱,以乙腈-5%四氢呋喃-冰醋酸（10：90：2）为流动相洗脱,流速为1.0mL/min,检测波长为283nm,柱温为35℃.结果：橙皮苷在0.2008～2.4096μg的范围内线性关系良好,相关系数r为0.9999;橙皮苷的平均加样回收率分别为100.84%（RSD=1.4%）结论：本方法科学准确,重现性好,结果稳定,可有效地控制保和片的质量.     

高效液相色谱法测定红果小檗中小檗碱的含量

文章通过高效液相色谱法,建立红果小檗中小檗碱的含量测定方法。采用十八烷基硅烷键合硅胶为填充剂,迪马Diamonsil-C18色谱柱（4.6mm×250mm,5μm）;流动相为乙腈-0.1%磷酸（50∶50,每100mL加十二烷基磺酸钠0.1g）;检测波长：265nm;柱温：室温;流速：1.0 mL/min;进样量：10μL。线性关系：Y=4009.20X＋53.735,R=0.9998,线性范围0.027-1.354μg;回收率：平均回收率为99.43%,RSD=1.12%（n=6）。本法操作简便准确,具有分离度和重现性好、灵敏度高的特点,可作为该药材中小檗碱的含量测定和质量监控方法。     

HPLC测定二陈汤中橙皮苷的含量

目的：建立二陈汤高效液相色谱测定橙皮苷的方法。方法：DiamonsilC1（84.6×250mm,5μm）柱,乙腈-0.05%磷酸（20：80）为流动相,流速：1.0mL.min-1,检测波长283nm,柱温：30℃。结果：橙皮苷回归方程为Y=1440X-9.957,r=0.9996,线性范围：0.237～1.185μg。平均加样回收率为98.84%,RSD为1.00%（n=5）。结论：方法简便、准确,重复性好,可作为二陈汤的质量分析方法。     

高效液相色谱法测定蓄中烟酸的含量

建立用高效液相色谱法测定萹蓄中烟酸含量的方法.色谱柱为KromasiL C1（84.6mm×250mm,5μm）柱;流动相为甲醇-磷酸二氢钾的缓冲溶液（用磷酸调节PH值至6.5）,（90：10）;流速0.5mL.min-1;检测波长266nm;柱温20℃.烟酸在0.50～2.50mg.mL-1范围内线性关系良好（r=0.9999,n=5）,平均回收率98.29%,RSD=1.23%（n=5）,萹蓄中烟酸的含量为43.40μg.g-1.本方法简便、准确、适用于粮食、植物和中药中的烟酸含量测定.     

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.     

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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