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1.
民族药响铃草的生药鉴定   总被引:2,自引:0,他引:2  
目的:为开发利用民族药响铃草提供理论依据。方法:采用来源性状显微及理化鉴定。结果:响铃草为豆科植物假地蓝CrotalariaferrugineaGrah的全草,详细描述了其生药鉴定特征。结论:实验结果为该药的开发利用、鉴别提供了理论参考依据。  相似文献   

2.
目的:对假朝天灌进行系统的生药学研究。方法:采用来源鉴定、性状鉴定、显微及理化鉴定的方法。结果:详细描述了假朝天灌的生药性状、横切面构造、粉末特征及理化鉴别的研究结果。结论:所得结果可为该生药的鉴定,质量标准的制定及进一步开发利用提供依据。  相似文献   

3.
目的:对民族药宾川獐牙菜进行系统的生药学研究.方法:采用性状鉴定,显微鉴定,理化鉴别.结果:详细描述了宾川獐牙菜的生药性状、横切面构造、粉末特征及理化鉴别的研究结果.结论:所得结果可以为该生药的鉴定、质量标准的制定及进一步开发利用提供依据.  相似文献   

4.
民族药丽江獐牙菜的生药学研究   总被引:2,自引:0,他引:2  
目的:对民族药丽江獐牙菜(SwertiadelavayiFranch)进行系统的生药学研究。方法:采用性状鉴定,显微鉴定,理化鉴别。结果:详细描述了丽江獐牙菜的生药性状、横切面构造、粉末特征及理化鉴别的研究结果。结论:所得结果可以为生药的鉴定,质量标准的制定及进一步开发利用丽江獐牙菜提供依据。  相似文献   

5.
目的:对云南两种香茶菜属植物灰岩香茶菜与淡黄香茶菜进行系统的生药学研究,为其鉴别及开发利用提供科学依据。方法:采用来源鉴定、性状鉴定、显微鉴定及理化鉴定的方法。结果:两种香茶菜属植物根的横切面及粉末显微特征有一定差异。结论:实验结果可为其生药鉴定、质量标准的制订和进一步开发利用提供理论依据。  相似文献   

6.
目的:为开发利用民族药鸡肉参提供理论依据,方法:采用来源鉴定、性状鉴定、显微及理化鉴定的方法。结果:鸡肉参为紫葳科植物滇川角蒿(Incarvillea mairei(Le′vl)Gierson)的根,详细描述了其生药鉴定特征。结论:实验结果可为该生药的鉴定、质量标准的制订和进一步开发利用提供理论依据。  相似文献   

7.
目的:对狭叶獐牙菜进行系统的生药学研究。方法:采用性状鉴定,显微鉴定,理化鉴别。结果:详细描述了狭叶獐牙菜的生药性状、横切面构造、粉末特征及理化鉴别的研究结果。结论:所得结果可以为生药的鉴定,质量标准的制定及进一步开发利用狭叶獐牙菜提供依据。  相似文献   

8.
目的 对彝药药材小霸王,即“长茎飞蓬Erigeron elongatus Ledeb.”进行系统的生药学研究。方法 采用性状鉴定、显微鉴定、高效液相色谱法对长茎飞蓬药材进行研究。结果 得到长茎飞蓬药材的生药性状、横切面组织构造及粉末特征,药材中灯盏乙素的含量为0.26-1.1%。结论 为长茎飞蓬的生药鉴定、质量标准制定及进一步开发利用长茎飞蓬药材提供依据。  相似文献   

9.
蒙药材悬钩子木的生药鉴定研究   总被引:1,自引:0,他引:1  
目的:建立悬钩子木生药鉴定体系.方法:采用性状鉴别、显微鉴别、一般理化鉴别法及紫外光谱线组法.结果:积累了悬钩子木的药材性状、显微特征、一般理化反应及紫外光谱线组的特征和数据.结论:本实验的方法可作为悬钩子木的真伪鉴别的依据.  相似文献   

10.
目的为甜叶菊的生药鉴定提供依据。方法从甜叶菊的原植物形态,生药性状,显微特征包括叶片的横切面、叶表皮装片、粉末装片进行系统观察和鉴别。结果能够为甜叶菊的生药鉴定提供原植物形态特征、性状鉴别特征和显微鉴别特征。结论甜叶菊是一种有较高经济价值的药用植物,应从多方面加以鉴别。  相似文献   

11.
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.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
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.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
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.  相似文献   

14.
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.  相似文献   

15.
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。  相似文献   

16.
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.  相似文献   

17.
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.  相似文献   

18.
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-  相似文献   

19.
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-  相似文献   

20.
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  相似文献   

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