HPLC测定和胃平肝丸中芍药苷的含量

目的:建立高效液相色谱法测定和胃平肝丸中芍药苷的含量.方法:采用高效液相色谱法测定和胃平肝丸中芍药苷的含量.色谱柱:Eclipse XDB-C18(4.6 mm×150 mm,5μm)分析柱;流动相:乙腈-水(11∶89);检测波长:232 nm;流速:1.0 m L·min-1;柱温:30℃.结果:芍药苷与其他成分分离良好;芍药苷进样量在0.12~0.60μg范围内有良好的线性关系(r=0.999 9),平均回收率(n=6)为99.12%.结论:该方法简便、准确,重复性好.     

HPLC切换波长法同时测定舒肝健胃丸中五种活性成分

建立HPLC法同时测定舒肝健胃丸中五种成分(芍药苷、柚皮苷、橙皮苷、和厚朴酚与厚朴酚)含量的方法.采用高效液相色谱法,色谱柱为TC-C18(4.6 mm×250 mm,5μm),检测波长为0~10 min,230 nm,10~20 min,283 nm和20~55 min,294 nm;流动相为乙腈-水溶液,梯度洗脱0~15 min,22%~22%;15~25 min,22%~72%;25~35 min,72%~72%;35~40 min,72%~90%;40~50 min,90%~90%;50~55 min,90%~22%;流速为1.0 m L·min-1;柱温为25℃.芍药苷、柚皮苷、橙皮苷、和厚朴酚与厚朴酚的质量浓度分别在0.672~67.2 mg·mL~(-1)、3.124~312.4 mg·mL~(-1)、2.3712~237.12 mg·mL~(-1)、0.44~440 mg·mL~(-1)和1.196-1~119.6 mg·mL~(-1)范围内呈良好的线性关系.测定舒肝健胃丸中芍药苷、柚皮苷、橙皮苷、和厚朴酚和厚朴酚的含量分别为0.68 mg·g~(-1)、2.85 mg·g~(-1)、6.75 mg·g~(-1)、1.09 mg·g~(-1)和1.09 mg·g~(-1).本方法简单方便、准确可靠、专属性强,为舒肝健胃丸药品的质量控制提供了方法依据.     

香果健消片质控方法研究Ⅰ:蜘蛛香主要成分的鉴别和含量测定

目的:建立香果健消片中橙皮苷的鉴别和含量测定方法.方法:采用薄层色谱法对橙皮苷进行鉴别;采用高效液相色谱法(HPLC)测定橙皮苷的含量,以Agilent XBP-C18(4.6mmx250mm,5μm)为分析柱,流动相为甲醇-5%冰醋酸(35:65),检测波长283nm.结果:薄层鉴别结果显示,橙皮苷在相应的色谱条件下分离效果良好;HPLC结果显示,橙皮苷在0.202～4.040μg之间线性关系良好(r=0.999 9),平均回收率为100.3%(n=6),RSD为1.28%.结论:此方法简便、稳定,重现性好,可用于本品中橙皮苷的鉴别和含量测定.     

高效液相色谱法同时测定抗骨增生丸中柚皮苷和淫羊藿苷的含量

建立了以高效液相色谱(HPLC)法同时测定抗骨质增生丸中柚皮苷及淫羊藿苷含量的方法.采用C18色谱柱(250×4.6 mm,5μm),以水为流动相A,乙腈为流动相B,梯度洗脱,流速为1.0 m L/min,检测波长分别为282 nm(柚皮苷)、270 nm(淫羊藿苷).结果显示,新建的含量测定方法专属性强,线性关系良好,柚皮苷与淫羊藿苷加样回收率分别为96.90%和99.71%,RSD分别为1.52%和1.80%.实验表明,本法简便、专属性强、重复性好,能有效控制抗骨增生丸的质量.     

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.     

高效液相色谱法测定小儿百部止咳糖浆中柚皮苷的含量

为了更好的控制小儿百部止咳糖浆的质量。本文采用高效液相色谱法对柚皮苷的含量测定方法。结果柚皮苷在0．1606～0．9638μg范围内，柚皮苷进样量与峰面积值呈良好的线性关系（r＝0．9997）。柚皮苷的平均回收率为99．87％，RSD为0．67％。结论该法操作简便，结果可靠，为小儿百部止咳糖浆限量标准提供了科学依据。     

HPLC-ELSD法测定黄芪颗粒中黄芪甲苷含量研究

目的:建立黄芪颗粒中黄芪甲苷的含测定方法。方法:采用反相高效液相色谱法,色谱柱:Agilent HypersilODS柱(5μm×4.6×250 mm);流动相:乙腈-水梯度洗脱;流速:1mL.min-1;柱温:30℃;ELSD参数漂移管温度:85℃;氮气压力:3.5 bar。结果:黄芪甲苷在0.5605～22.42μg之间线性关系良好,回收率为99.90%,RSD为1.23%(n=9)。结论:该方法简便、准确,可用于黄芪颗粒中黄芪甲苷的含量测定,以控制制剂质量。     

HPLC法测定健儿消食口服液中橙皮苷和黄芩苷的含量

建立一种同时测定健儿消食口服液中的橙皮苷和黄芩苷的高效液相色谱法（HPLC）．样品用甲醇超声提取，采用ZorbaxSB-C18色谱柱上分离，以1％乙酸溶液-乙腈为流动相进行梯度洗脱，检测波长280nin，柱温为25℃时直接测定．橙皮苷在15．5～155．0μg·ml-1内线性关系良好；黄芩苷在58．0～290．0μg·...     

HPLC法测定骨碎补配方颗粒中柚皮苷的含量

目的:建立骨碎补配方颗粒中柚皮苷的含量测定方法.方法:采用高效液相色谱法定量柚皮苷.色谱柱:大连依利特C<,18>反相拄(5μm×250mm×4.6mm).流动相:甲醇-醋酸-水(35:4:65),柱温为35℃,流速:1.0mL/min,检测波长:283nm.结果:HPLC图谱显示,色谱峰形好,分离度高,阴性对照无干扰;供试品在24h内稳定(RSD=0.80%);该方法精密度高(RSD=0.31%),重复性良好(RSD=0.34%),平均加样回收率为96.97%(RSD=0.76%).结论:所建立的方法适合作为骨碎补配方颗粒的含量测定方法.     

二十五味珊瑚丸中西红花苷Ⅰ&Ⅱ的含量测定研究

目的:建立高效液相色谱法测定二十五味珊瑚丸中西红花苷含量的方法。方法:采用HPLC法,色谱柱:Dionex C18柱(250mm×4.60mm,5um);流动相为甲醇-水(52:48),流速为0.8ml/min,检测波长为440nm,柱温为25℃;进样量10μl;用标准曲线法定量,测定二十五味珊瑚丸中西红花苷含量。结果:西红花苷Ⅰ在33μg～330μg范围内与峰面积呈良好的线性关系(r=0.9999),西红花苷Ⅱ在62μg～310μg范围内与峰面积呈良好的线性关系(r=0.9998),平均回收率为103.73%,RSD为1.68%(n=6)。结论:本方法操作简单、重现性好,可用于测定二十五味珊瑚丸中西红花苷Ⅰ&Ⅱ含量。     

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.     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

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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