HLPC梯度洗脱测定抗荨胶囊中升麻素苷和5-O-甲基维斯阿米醇苷的总含量

目的:建立抗荨胶囊(防风蒺藜蝉蜕黄芪当归白鲜皮等)中升麻素苷和5-O-甲基维斯阿米醇苷含量的高效液相色谱的方法。方法:以WondaSil C18-WR(4.6 mm×150mm,5μm PH 1-10)为色谱柱;流动相采用甲醇(A)-0.05%磷酸溶液(B)梯度洗脱:0~6min,40%B,6~17min,45%(B),17~30min,75%(B),升麻素苷和5-O-甲基维斯阿米醇苷检测波长为254nm,流速为1.0mL·min-1,柱温为30℃,进样量为10μl。结果:用梯度洗脱得到了较好的分离效果,升麻素苷18.4~92.0μg/mL之间线性关系良好,r=0.9999550(n=6);5-O-甲基维斯阿米醇苷在22.0~110.0μg/mL之间线性关系良好,r=0.9996565(n=6),平均回收率分别为100.28%和100.56%。结论:该研究同时进行升麻素苷、5-O-甲基维斯阿米醇苷的定量分析,方法专属性强,准确度高,可用于抗荨胶囊中升麻素苷和5-O-甲基维斯阿米醇苷的含量测定。     

RP-HPLC法测定心肌安颗粒中绿原酸和芍药苷

建立RP-HPLC同时测定心肌安颗粒剂中含绿原酸、芍药苷两种有效成分的方法.采用Dia-monsil C18(4.6 mm×250 mm,5μm)色谱柱,以乙腈-0.2%磷酸水为流动相梯度洗脱,流速1.0mL/min,柱温35℃,检测波长230 nm.绿原酸和芍药苷质量浓度分别在20～120μg/mL(r=0.999 9)和30～180μg/mL(r=0.999 8)范围内与峰面积线性关系良好,绿原酸和芍药苷平均加样回收率(n=6)分别为99.38%(RSD=0.96%)和99.91%(RSD=0.82%).三批制剂测定结果显示,含绿原酸量为10.36 mg/g(RSD=0.73%),含芍药苷量为8.18 mg/g(RSD=0.58%).本方法快速、准确,重复性好,可用于同时测定心肌安颗粒剂中绿原酸和含芍药苷的量.     

高效液相色谱法同时测定柴石退热颗粒中八种成分含量

目的:通过研究建立一种检测方法,可同时测定柴石退热颗粒中八种化合物的含量。方法:采用高效液相色谱(HPLC)法,C_(18)(5μm,4.6×250 mm)色谱柱,流动相为0.12%甲酸乙腈溶液-0.12%甲酸水溶液,梯度洗脱,1.0 mL/min的流速,270 nm的检测波长。结果:黄芩苷等八种化合物的线性范围分别为4.2336～105.84μg/mL、0.4992～12.48μg/mL、1.4496～36.24μg/mL、3.1548～78.96μg/mL、1.146～28.64μg/mL、0.2760～6.900μg/mL、1.8425～30.87μg/mL、0.5624～2.6875μg/mL(r≥0.9973),检测限分别为0.501、0.321、0.285、0.369、0.247、0.268、0.432、0.362,平均加样回收率分别为98.23%～101.18%(RSD=1.14%,n=6),95.29%～100.24%(RSD=1.86%,n=6),96.85%～100.64%(RSD=1.32%,n=6),95.90%～103.06%(RSD=2.83%,n=6),97.81%～100.85%(RSD=1.35%,n=6),97.01%～101.27%(RSD=1.52%,n=6),95.20%～101.77%(RSD=2.70%,n=6),97.16%～102.94%(RSD=2.34%,n=6)。结论:该方法通过方法学验证,结果可靠,可用于同时测定柴石退热颗粒中8种活性成分的含量。     

HPLC法测定5年及6年生黄芪中黄酮类成分的含量

通过冷浸、回流提取、超声提取法分别对山西浑源 5 a和6 a生黄芪中水溶物、槲皮素,5-O-甲基维斯阿米醇苷和芒柄花素进行了提取分离,并进行了含量比较.采用Zorbax SB-C18色谱柱,以甲醇-0.4%H3PO4(V:V=50:50)为流动相,流速为1.0 mL/min,在254 nm处同时测定了槲皮素,5-O-甲基维斯阿米醇 苷和芒柄花素的含量.结果表明:槲皮素,5-O-甲基维斯阿米醇苷和芒柄花素的线性范围分别为:0.028 0 μg～0.350 0 μg,0.400 0 μg～30.000 0 μg,0.080 0 μg～ 0.600 0μg.回收率分别为:91.25%,111.02%,95.15%.RSD分别为:1.59%,4.28%,1.84%.该方法简便,准确,重复性好,可用于黄芪药材的质量评价.     

HPLC测定四方藤中3种岩白菜素类化合物的含量

建立了使用高效液相色谱测定四方藤中岩白菜素、11-O-没食子酰岩白菜素、11-O-对羟基苯甲酰岩白菜素含量的方法。色谱柱为SinoChrom ODS-BP C18(5μm,4.6mm×200mm),流动相为乙腈和0.1%的甲酸水溶液,流速为0.8mL/min,检测波长为275nm。结果表明岩白菜素、11-O-没食子酰岩白菜素和11-O-对羟基苯甲酰岩白菜素都在0.066 7~0.343 7μg内呈良好的线性关系,平均加样回收率分别为96.11%(RSD=1.92%),97.02%(RSD=0.9%),94.43%(RSD=1.77%)。本方法操作简便,精密度高,重现性好,可作为四方藤中这3种岩白菜素类化合物含量的检测方法。     

HPLC法同时测定小花鬼针草中3种黄酮类成分含量

建立了HPLC法同时测定小花鬼针草中芦丁、金丝桃苷和槲皮苷含量的方法。采用Diamonsil C18色谱柱(4.6 mm×250 mm,5μm),流动相为乙腈-0.2%冰醋酸梯度洗脱,流速为1 mL/min;检测波长为360 nm。结果表明,芦丁、金丝桃苷和槲皮苷在0.50~12.50μg/mL(r=0.999 9)、0.49~12.35μg/mL(r=0.999 8)、0.42~10.55μg/mL(r=0.999 5)范围内线性良好,平均回收率为99.37%(RSD=0.56%)、99.35%(RSD=0.57%)、99.68%(RSD=0.56%)。该方法简便、准确、重现性好,可用于同时测定鬼针草中3种黄酮成分的含量。     

HPLC法测定皮炎消冲剂中梓醇的含量

目的建立简便可行的皮炎消冲剂中梓醇的含量测定方法,为产品质量监控提供参考。方法采用Agilent 1200高效液相色谱仪,确定梓醇标准品最佳分析参数,建立峰面积y(mAU·min)与梓醇含量x(mg/mL)之间的关系式,并利用加标回收率实验来证实此分析方法的可靠性和精密度,然后再对市售皮炎消冲剂产品进行分析。结果当选用Agilent色谱柱,以水-乙腈-甲醇(95∶2∶3)混合物作为流动相,检测波长选定212nm,流动相流速为0.8mL/min时,HPLC法测定梓醇在0.008~0.8mg/mL范围内,峰面积y(mAU·min)与梓醇含量x(mg/mL)之间呈现良好的线性关系,线性回归方程可以表示为y=7 528x-51.76,其线性相关系数R2=0.999。此方法加标回收率实验结果显示,6个平行样品平均回收率为100.43%,RSD为1.08%。将此方法用于皮炎消冲剂中梓醇的含量测定,结果表明,梓醇含量为0.543 6~0.561 2mg/g,RSD在0.97%~1.07%之间。结论本方法简便、高效、重现性好,可以用于皮炎消冲剂生产过程中对梓醇含量的监控,以确保产品质量的稳定性。     

HPLC法同时测定红直獐牙菜中3种有效成分的含量

建立了反相高效液相色谱法(HPLC)同时测定红直獐牙菜中的獐牙菜苦苷、龙胆苦苷、芒果苷含量的方法。在检测波长254 nm、柱温30℃、流速1 mL/min时,用ZORBAX SB-C18(250mm×4.6mm i.d.,5μm)柱,以MeOH和H2O(含0.04%H3PO4)在0~20 min内由20%至35%线性梯度洗脱。上述3种成分均达到基线分离,獐牙菜苦苷、龙胆苦苷、芒果苷的线性范围分别为0.0095~2.9μg(r=0.9999),0.0486~2.56μg(r=0.9999),0.0056~2.8μg(r=0.9999);回收率为97.7%(RSD=4.3%),99.5%(RSD=3.5%),103%(RSD=1.1%)。     

HPLC法测定人参叶中人参黄酮苷的质量分数

采用高效液相色谱法,测定人参叶中的主要黄酮类成分人参黄酮苷[山柰酚-3-O-β-D-半乳糖(2→1)-β-D-葡萄糖苷]的质量分数.色谱条件:Zorbax Extend C18柱(250mm×4.6mm,5μm),流动相为V(甲醇):V(乙腈):V(体积分数为0.1%的醋酸水溶液)=25:5:70,流速为1.2mL/min,检测波长268nm,色谱柱温度为25℃.结果表明:在进样量0.5～20.0μg范围内线性关系良好,相关系数r=0.9999(n=6);人参黄酮苷的平均回收率为98.5%;RSD=0.64%(n=6)。     

保利甘胶囊的质量标准研究

建立保利甘胶囊的质量控制方法.对姜黄、五味子、泽泻、白芍和枸杞子进行薄层色谱(TLC)鉴别;用反相高效液相色谱法(RP-HPLC)测定姜黄素和五味子醇甲含量.结果表明,TLC图谱分离度好,检出斑点清晰.RP-HPLC法测定的姜黄素质量浓度在5.15～102.90μg/mL范围内与峰面积呈良好的线性关系,R2=0.999 9,平均回收率为98.04%(n=9),RSD=3.15%;RP-HPLC法测定的五味子醇甲的进样质量浓度在5.22～104.40μg/mL范围内与峰面积呈良好的线性关系,R2=0.999 8,平均回收率为98.52%(n=9),RSD=3.67%.本法专属性强,结果准确可靠,可作为保利甘胶囊的质量控制方法.     

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.     

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.     

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.     

A computer generator for randomly layered structures

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

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.     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

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.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to