蛇葡萄根软膏质量标准

目的:建立蛇葡萄根软膏的质量控制方法.方法:采用高效液相色谱法测定软膏中大黄素的含量,使用Inertsil ODS-35μm(4.6mm×250mm)色谱柱;甲醇-0.1%磷酸水溶液(80∶20)为流动相;流速:1.0mL/min;柱温35℃;检测波长为254nm.薄层色谱检测软膏中的蛇葡萄根和虎杖,以没食子酸和大黄素作对照品.结果:大黄素在0.1156~0.5780μg范围内线性关系良好,平均加样回收率为98.56%,RSD%为1.74%(n=6);薄层色谱中供试品与对照品相应位置上斑点清晰,阴性无干扰.结论:该方法可用于蛇葡萄根软膏的质量控制.     

RP-HPLC法测肝康颗粒中阿魏酸的含量

建立以高效液相色谱法测定肝康颗粒中阿魏酸含量的方法。采用反相高效液相色谱法测定康颗粒中阿魏酸的含量。高效液色谱条件为:色谱柱,Kromasil C_(18)柱(250 mm×4.6 mm,5 mm);流动相,甲醇-0.085%磷酸(38:62);检测波长316 nm;流速1.0 mL·min~(-1);柱温为25℃。阿魏酸进样量在75.2～752 ng范围内线性关系良好,回归方程为:Y=7066.1X-42190(r=0.9994,n=6);平均加样回收率为99.46%,RSD=1.33%。本方法操作简便、准确、灵敏度高可用于肝康颗粒的质量控制。     

高效液相色谱法测定肋柱花中獐牙菜苦苷的含量

目的:建立高效液相色谱法测定肋柱花中獐牙菜苦苷含量的方法.方法:采用高效液相色谱法.色谱柱为Diamonsil C18(250 mm×4.6mm,5μm);流动相为甲醇-水(25∶75);流速为1.0 ml/min;检测波长为237nm;柱温为50℃.结果:獐牙菜苦苷对照品进样量在0.313 mg~1.875mg范围内与峰面积具有良好的线性关系,r=0.999 99;平均回收率为99.50%、CV(%)=0.92(n=6).结论:该方法简便、快捷、准确、重复性好,可用于肋柱花中獐牙菜苦苷的含量测定.     

Quality standard of compound ShuYu granule

采用薄层色谱法鉴别制剂中的首乌藤、丹参、白芍;高效液相色谱法测定制剂中芍药苷的含量.色谱柱:Hypersil ODS2-C18 (4.6 mm ×250 mm,5 μm);流动相:乙腈-0.1％磷酸溶液(13:87);流速:1.0 mL/min;柱温:30℃;检测波长:230mm.结果显示薄层色谱斑点清晰,阴性无干扰,重现性良好;高效液相色谱法测定芍药苷在0.023 78 -0.594 44 mg·mL-呈良好的线性关系(r =0.999 9);平均回收率为100.46％,RSD值为1.25％(n=6).此方法简便、快捷、准确,可用于疏郁复方颗粒的质量控制.     

高效液相色谱法测定滇丹参中丹参酮Ⅱ A的含量

目的:建立高效液相色谱法测定滇丹参中丹参酮ⅡA的含量。方法:采用ZORBAXSB-C18(4.6mm×150mm,5μm)色谱柱;流动相为甲醇-水(75∶25);柱温25℃;检测波长270nm;流速1.0ml/min;进样量10μl。结果:丹参酮ⅡA在0.0041～0.410 0μg/L范围内线性关系好,r=0.9999(n=6),平均回收率为98.59%,RSD为1.05%。结论:该方法准确、快速、灵敏,可用于滇丹参的质量控制。     

高效液相色谱法测定鼻通丸中木兰脂素含量

目的:建立鼻通丸中木兰脂素的含量测定方法。方法:采用高效液相色谱(HPLC)法,岛津C18柱(200 mm×4.6 mm,5μm);流动相:乙腈-四氢呋喃-0.1%冰醋酸溶液(35∶1∶65);检测波长:278 nm;柱温:35℃;流速:0.8 ml/min。结果:中木兰脂素进样量线性范围为74.8~1122 ng,y=407.01x+1418.3,R2=0.9997,平均加样回收率为100.82%,RSD为1.25%(n=6)。结论:HPLC法简单可行、结果可靠,专属性强,灵敏度高,重复性好,可用于定量控制鼻通丸的质量。     

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测定益肝颗粒中五味子甲素的质量浓度

建立测定益肝颗粒中五味子甲素质量浓度的方法.室温条件下超声提取五味子甲素,HPLC测定其质量浓度,SinoChrom ODS-BP色谱柱,以甲醇-水(87∶13)为流动相;检测波长为254 nm;柱温25℃;流速为1.0 mL/min;进样量10μL.五味子甲素进样量在0.2～1.0μg范围内与峰面积线性关系良好;结果平均加样回收率为98.82%,(n=3),RSD为1.19%.该方法灵敏、准确、重复性好,可用于益肝颗粒的质量控制.     

HPLC测定妇炎净软胶囊中阿魏酸的含量

建立以高效液相色谱法测定妇炎净软胶囊中阿魏酸含量的方法。色谱柱为Diamonsil C18(5μm,250×4.6mm,5μm);流动相为甲醇-1%醋酸(35:65);流速1ml.min-1;检测波长:320nm。阿魏酸的线性范围是0.05055～0.4044μg(r=0.9999),平均回收率为100.4%,RSD=1.45%(n=5)。本方法简便、快捷、结果准确,可用于妇炎净软胶囊的质量控制。     

高效液相色谱法测定保健食品中维生素B12的含量

采用高效液相色谱法测定保健食品中维生素B12含量,色谱柱用Agilent ZORBAX SB-Aq (4.6mm×250mm,5μm), 流动相为甲醇-0.2%磷酸水溶液(38:62),流速1.0ml/min,检测波长361nm.结果是维生素B12线性范围为0.816～4.08μg,r=0.9997;平均回收率为97.2%,RSD为1.39%(n=6),最小检出限为0.85μg/g.高效液相色谱法灵敏度高,操作简便,重现性好,结果准确,可以用于保健食品中维生素B12的质量控制.     

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