高效液相色谱法测定匝迪-5丸中胡椒碱的含量

目的：测定匝迪-5中胡椒碱的含量．方法：采用HPLC法．结果：进样在0．24～1．2μg有良好的线性关系，r=0．9998。平均回收率为98．1％，CV=1．92％(n=5)．结论：该方法分离效果好，简便、快速，结果准确，使用于测定匝迪-5中胡椒碱的含量．     

维U颠茄铝胶囊中硫酸阿托品和氢溴酸东莨菪碱含量测定

硫酸阿托品和氢溴酸东莨菪碱为维U颠茄铝胶囊中重要活性成分,其含量的测定有利于产品的质量监控。采用甲醇-超声波提取活性成分,高效液相色谱法(HPLC)测定含量。结果表明:超声波-甲醇提取效果好;HPLC 分析结果显示硫酸阿托品(0．0216-0．24192 mg／mL)和氢溴酸东莨菪碱(0．01062-0．12736 mg／mL)均呈良好的线性相关,相关系数分别为0．9993和0．9998;精确度高,硫酸阿托品平均加样回收率96．43％,RSD为1．0％(n=5), 氢溴酸东莨菪平均加样回收率95．10％,RSD为1．0％(n=5);试验的分离性、重复性和稳定性良好。本方法快速、可靠,同时为其他中药制剂中硫酸阿托品和氢溴酸东莨菪碱含量测定奠定了基础。     

薄层扫描法测定延胡索中延胡索乙素含量

采用薄层扫描法测定药材延胡索中延胡索乙素的含量．以石油醚(60～90℃)-醋酸乙酯-无水乙醇(20：17：1)为展开剂，检测波长为510nm．参比波长为600nm，Sx=3，标准曲线Y=1．098X 1．0645，r=0．9973．线性范围0．507～2．535μg，平均回收率98．0％，RSD=2．1％。     

HPLC测定藏药君扎排毒养颜胶囊中大黄素、大黄酚的含量

目的 建立一种反相高效液相色谱法测定藏药君扎排毒养颜胶囊中大黄素、大黄酚含量的方法。方法 用C18ODS柱，以甲醇-0．1％磷酸溶液(85：15)为流动相，检测波长254mm。结果 平均回收率大黄素99．07％(RSD=1．16％，n=4)；大黄酚99．26％(RSD=1．23％，n=4)。结论：该方法简便、快捷、准确。     

薄层分析法快速分析银杏酸的方法研究

建立了一种薄层分析法,用于快速分离和分析银杏叶提取物(EGb)生产过程中银杏酸的含量,并通过其他的定性方法对分离的样品进行了鉴定,确定提取物中包含了银杏酸类的5种代表性成分。回归方程为：Y=-2020．8 2644．9X(r=0．9986),线性范围：0．77～15．0μg,检测下限0．27ng。加样回收率100．8％,RSD为1．9％。该方法简单、易行,尤其适合EGb生产过程中对银杏酸含量的监控。     

莱菔子中总黄酮和多糖的微波提取与含量测定

运用微波技术提取莱菔子总黄酮和多糖,用比色法测定总黄酮和多糖含量。结果表明：莱菔子中总黄酮含量为0．60％,平均回收率为100．3％,RSD=1．04％(n=5)。多糖含量为12．73％,平均回收率为101．54％．RSD：0．46％(n=5)。运用微波技术从莱菔子中联合提取总黄酮和多糖,其反应速度加快,提取效率提高。     

圆盖阴石蕨黄酮类化合物的研究

样品经75％乙醇抽提，以芦丁为标准用A1(NO3)3显色法于510nm下测定了圆盖阴石蕨中总黄酮的含量．结果表明：A1(NO3)3显色法测定该物质黄酮含量的显色稳定性和重复性良好，且附生于10种不同树上的圆盖阴石蕨(地上和地下部分)中黄酮含量有差异，地下部分的变幅为0．23％-1．34％，地上部分为0．595％-3．508％，显示出含量与不同附主有一定的相关性．     

新疆红景天中红景天苷含量的测定

用反相高效液相色谱法，流动相为甲醇-0．1mol／L磷酸二氢钠(15：85)，紫外检测波长为280nm，流速1．0mL／min，测定新疆产红景天中红景天苷含量，结果表明，红景天苷对照品在10～320μg/mL内线性关系良好，r=0．999。平均加样回收率为96．5％；RSD为3．4％。稳定性良好。该法简便，分离完全，结果可靠，适用于红景天苷的含量测定。     

大鼠血浆中芦丁和槲皮素的RP-HPLC同时分析方法

建立测定大鼠血浆中芦丁和槲皮素含量的反相高效液相色谱(RP—HPLC)方法．用甲醇-乙酸(9:1, v／v)去血浆样品中蛋白质处理,以香兰素作内标,采用Century SIL C18BDS(250 mm×4．6 mm,5μm)色谱柱, 以甲醇-水-磷酸(45:53:0．02)为流动相,流速为0．7 ml／min;紫外检测波长为370nm,柱温为室温,进样量 10 μl．芦丁的定量限为0．068 μg／ml,线性范围为0．068～8．6 μg／ml;槲皮素的定量限为0．0502μg／ml,线性范围为0．0502～13μg／ml．芦丁和槲皮素的平均回收率分别为95．3％,RSD=4．1和90．3％,RSD=2．53(n =6),芦丁的日内及日间精密度的相对标准差分别小于13．2％和9．9％,而槲皮素的日内及日间精密度的相对标准差分别为小于13．9％和11．3％．该方法简单、快速、灵敏度高、重复性良好,可作为芦丁和槲皮素体内样品的分析方法．     

散偏口服液中阿魏酸的含量测定

采用HPLC法、C18柱，以甲醇-1％冰醋酸溶液(30：70)为流动相，检测波长为313nm，对散偏口服液中阿魏酸的含量进行测定，结果表明，阿魏酸在0．996～49．80mg／L范围内线性良好，r=0．9999，平均回收率为96．96％，RSD为2．13％．该方法精确、稳定、快速方便，适于该复方制剂的质量控制．     

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.     

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.     

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.     

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.     

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.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

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…