蒙成药中丁香的薄层色谱鉴别研究

目的：对高勒图宝日-6等不同剂型的15种蒙成药中的丁香进行鉴别研究.方法：采用薄层色谱鉴别实验方法.结果：找到一种比较简单的供试液制备方法和薄层色谱条件.结论：该法同样适用于啊嘎日-35等大复方散、丸剂,而且斑点清晰,重现性好.     

蒙药痔瘘六味散薄层色谱鉴别研究

目的：为蒙药痔瘘六味散的鉴别提供依据．方法：采用薄层色谱鉴别法．结果：分别检出了蒙药痔瘘六味散中的诃子、山奈、蔓荆子、连翘．结论：实验方法简便，重现性好。结果准确．     

薄层色谱扫描法检验口红样品

通过实验确定薄层色谱扫描法检验口红样品的条件.对收集到的不同品牌、同一品牌不同牌号、同一品牌同一牌号不同批次的口红样品,用乙醇:氯仿(1:1)进行提取,在四氯化碳:氯仿:乙酸(6:4:1)的展开剂体系中对口红样品进行展开,并用CS-9301薄层色谱扫描仪扫描.利用薄层色谱扫描法可以将不同品牌以及同一品牌不同牌号的口红样品加以区分.实验证明,确定的实验条件是切实可行的,为检验口红样品提供了一种新的方法.     

薄层色谱板的快速制备及分离效率研究

薄层色谱法在天然产物的分离、跟踪有机反应、柱色谱分离预测试及有机化学实验教学中起着重要的作用。该文以羧甲基纤维素钠水溶液作为粘合剂,采用倾涂法制备薄层色谱板,考察了粘合剂浓度、吸附剂类型、干燥方式对薄层色谱板分离效果的影响。实验研究表明,将一定量的柱层析硅胶溶于0.4%的羧甲基纤维素钠水溶液中,制成的薄层色谱板粘结性能好,分离效率高,制板时间大为缩短,为薄层色谱板的制作提供了一条快速、便捷、环境友好的方法。     

泌感合剂中金钱草、半枝莲和白花蛇舌草的薄层色谱鉴别

为完善泌感合剂的质量标准,建立了泌感合剂中金钱草、半枝莲和白花蛇舌草3种组方药材的薄层色谱鉴别法,并用该方法对泌感合剂中的金钱草、半枝莲和白花蛇舌草进行了定性鉴别.实验结果表明,3种组方药材的薄层色谱图中,对照品、对照药材和供试品在相同位置处有相同颜色斑点,分离较好,阴性无干扰.薄层色谱鉴别法简单易行、重现性好、专属性强,可作为泌感合剂中金钱草、半枝莲和白花蛇舌草的定性鉴别方法.     

薯蓣皂甙元渣料成分的分离及薯蓣皂甙元的薄层光密度测定法

从薯蓣皂甙元及其渣料的薄层色谱发现9个组分.采用柱色谱和离心薄层色谱配用的方法,从薯蓣皂甙元渣料分离出5个纯品.研究了薯蓣皂甙元含量的薄层光密度测定法.     

薄层扫描法测定蒙药忠伦-5胶囊中苦参碱含量

运用薄层扫描法测定蒙药忠伦-5胶囊中苦参碱含量,结果精密度实验RSD=1.31％,重复实验RSD=1.94％,薄层色谱3h内稳定,苦参碱平均回收率为99.56％,RSD=2.12％.此方法简便、准确、重复性好,可用于蒙药忠伦-5胶囊的质量控制.     

薄层色谱实验的教学方法研究

本文讨论了薄层色谱实验的实验方法和教学方法研究,充分调动了学生的主动性和积极性,提高了学生的实验兴趣,教学效果显著提高。     

茴香五味散的药效学研究

通过实验揭示茴香五味散理气止痛的作用机制的同时,通过临床病例观察,证明茴香五味散具有解痉止痛,温胃理气之功效.     

薄层色谱法鉴别东方草莓药材中儿茶素

参照《中国药典(一部)》(2010版)对薄层色谱鉴别法的规定,以东方草莓药材中的一特征性成分(+)-儿茶素为对照品,分别采用薄层色谱法对7个产地的10批东方草莓药材进行检测,建立了东方草莓药材的薄层色谱鉴别方法.该方法操作简便、准确、可靠.     

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.     

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.     

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.