清热解毒片质量标准研究

采用薄层色谱法对清热解毒片中的金银花、栀子及连翘进行定性鉴别,采用高效液相色谱法测定黄芩中的黄芩苷含量.色谱柱为C18柱(4.6mm×250mm,5μm),流动相为甲醇-0.2%磷酸水溶液(50:50),检测波长276nm.鉴别项下薄层图斑点清晰,阴性对照无干扰,专属性强;黄芩苷含量测定方法在进样浓度30.6～81.6μg/ml内呈良好的线性关系,r=0.9999,回收率为99.34%,RSD=1.83%.本方法简便准确,重现性好,可用于清热解毒片的质量标准.     

更年舒片的质量标准研究

目的:建立更年舒片的质量标准.方法:采用薄层色谱法(TLC)对方中当归、牡丹皮、淫羊藿进行定性鉴别;采用高效液相色谱法测定更年舒片中芍药苷的含量.结果:TLC色谱中均能明显地检出当归、牡丹皮和淫羊藿;芍药苷含量测定线性范围0.032～0.160μG/mL(r=0.999 8.n=5),平均回收率为100.9%,RSD为2.89%.结论:该方法准确可靠,可用于该制剂的质量控制.     

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.     

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.     

Study on Quality Standard of Xiaoerbiyan Pian

目的 建立小儿鼻炎片的质量标准. 方法采用薄层色谱法对小儿鼻炎片中的白芷、升麻、和防风等药材进行了薄层色谱鉴别;采用高效液相色谱法测定了君药藁本药材中阿魏酸的含量,色谱柱为Agilent ZORBAX SB-C18(250mm×4.6mm,5μm)分析柱;流动相:甲醇-0.1%磷酸溶液(25∶ 75);流速:1.0mL/min;检测波长:320nm;柱温:40℃.结果 薄层色谱法可鉴别出该制剂中的白芷、升麻、和防风.阿魏酸在0.028 8～5.67μg范围内有良好的线性关系,r=0.999 5,平均回收率为100.6%,RSD为1.54%(n=6).结论 该方法准确、灵敏、重复性好,能有效地控制小儿鼻炎片的质量.     

十全大补膏中芍药苷的含量测定

建立了高效液相色谱法测定十全大补膏中芍药苷含量的方法。采用Kromasil C_(18)色谱柱(4.6 mm×250 mm,5μm),以乙腈-水(17∶83,V/V)为流动相,柱温30℃,进样量10μL,检测波长230 nm,流速1.0 mL/min。结果表明,芍药苷在0.083 6~0.627 0μg范围内线性关系良好(r=0.999 8),加样回收率为98.98%~100.47%,相对标准偏差为0.65%(n=6)。本方法专属性强、灵敏度高、重现性好、操作简便,适用于十全大补膏的质量控制。     

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法测定炎平灌肠液中芍药苷的质量浓度

建立炎平灌肠液中芍药苷的质量浓度测定方法,采用高效液相色谱法,色谱柱采用Kro-masilTMC18柱,流动相为甲醇-0.05 mol/L磷酸二氢钾(40∶65),流速为1.0 mL/min,检测波长为230nm,柱温为室温.芍药苷在0.2~1.0μg范围内与峰面积呈良好的线性关系(r=0.9993),平均回收率99.18%.结果表明,该方法简便、稳定、可靠.可用于炎平灌肠液中芍药苷的质量浓度测定.     

丹黄前列颗粒质量标准研究

建立丹黄前列颗粒的质量标准.采用薄层色谱法对丹黄前列颗粒中蛇床子、桂枝进行定性鉴别;采用高效液相色谱法测定绿原酸的含量.色谱柱为Diamonsil C18(4.6mm × 250 mm,5μm);流动相为乙腈-0.4%磷酸(13:87);流速为1.0 mL/min;检测波长为327 nm.定性鉴别薄层色谱斑点清晰,阴性...     

基于化学模式识别技术的苍耳子鼻炎胶囊(滴丸)中3个活性成分含量测定及质量评价研究

本文采用同时测定苍耳子鼻炎胶囊(滴丸)中3个活性成分含量的高效液相色谱法(HPLC)的方法,并用化学模式识别技术综合评价该药物质量。采用HPLC-PDA分析检测,Agilent poroshell 120 EC-C18(4.6 mm×50 mm, 2.7μm)为色谱柱,流动相为乙腈-0.2%磷酸水溶液,梯度洗脱;流速为1.0 mL/min;柱温为35℃;进样量为10μL;检测波长为327 nm(绿原酸),230 nm(黄芩苷、木兰脂素)。采用统计软件SPSS 22.0及SIMCA14.1对21批苍耳子鼻炎胶囊(滴丸)样品含量测定结果进行聚类分析与主成分分析。结果显示,在一定浓度范围内,苍耳子鼻炎胶囊(滴丸)中绿原酸、黄芩苷、木兰脂素线性关系良好(r≥0.9994);精密度、稳定性(24 h)、重复性试验的RSD<2.0%(n=6);平均加样回收率分别98.66%,99.84%,100.21%(n=9),RSD均<2.0%;21批样品中绿原酸、黄芩苷、木兰脂素含量分别为0.170 2～1.415 5 mg/g, 13.160 5～46.831 4 mg/g, 1.833 8～...     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

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-