• Title/Summary/Keyword: ASTER

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Disaccordance of Genetic Relationship between Randomly Amplyfied Polymorphic DNA and their Morphological Characteristics of Korean Native Aster

  • Hong Su-Young;Cho Kwang-Soo;Suh Jong-Taek;Yoo Ki-Oug
    • Plant Resources
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    • v.8 no.1
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    • pp.36-43
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    • 2005
  • This study were focused on the genetic relationship using RAPDs and some morphological characteristics among eleven taxa Aster collected in Korea. Twenty random primers were selected, a total 216 DNA bands were generated and 213 bands were shown polymorphism among species. The collected eleven taxa were clustered into five groups at 0.609 similarity index. The first group was A. glehni, A. ageratoides, A. maackii and A. scaber was clustered at 0.713 of genetic distance. The second group was A. tataricus and A. koraiensis and the third group was A. spathulifolius, the forth group was A. yomena, A. hayatae and A. hispidus and the fifth was A. tripolium.

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Geostatistical Integration of Different Sources of Elevation and its Effect on Landslide Hazard Mapping

  • Park, No-Wook;Kyriakidis, Phaedon C.
    • Korean Journal of Remote Sensing
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    • v.24 no.5
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    • pp.453-462
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    • 2008
  • The objective of this paper is to compare the prediction performances of different landslide hazard maps based on topographic data stemming from different sources of elevation. The geostatistical framework of kriging, which can properly integrate spatial data with different accuracy, is applied for generating more reliable elevation estimates from both sparse elevation spot heights and exhaustive ASTER-based elevation values. A case study from Boeun, Korea illustrates that the integration of elevation and slope maps derived from different data yielded different prediction performances for landslide hazard mapping. The landslide hazard map constructed by using the elevation and the associated slope maps based on geostatistical integration of spot heights and ASTER-based elevation resulted in the best prediction performance. Landslide hazard mapping using elevation and slope maps derived from the interpolation of only sparse spot heights showed the worst prediction performance.

The Screening of Medicinal Plant Extracts against Agrobacterium tumefaciens I (Agrobacterium tumefaciens에 대한 약용식물의 탐색 I)

  • Eum, Jin seong;Park, Young doo
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2009.10a
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    • pp.1087-1090
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    • 2009
  • This study was carried out to research antimicrobial agents from medicinal plants, Glycyrrhiza uralensis, Dryopteris crassirhizoma, Dictamnus albus, Paeonia lactiflora, Angelica dahurica, Spirodela polyrhiza, Cimicifuga heracleifolia, Bupleurum falcatum, Magnolia kobus, Artemisia princeps, Arctium lappa, Aster tataricus, Hovenia dulcis, Citrus unshiu, Asparagus cochinchinensis, Gardenia jasminoides, Smilax china, Hovenia dulcis, Prunus sargentii, Scutellaria baicalensis. The ethanol extracts of 20 medicinal plants were tested for the antimicrobial activity against Agrobacterium tumefaciens. The extracts of Glycyrrhiza uralensis, Dryopteris crassirhizoma, Cimicifuga heracleifolia, Bupleurum falcatum showed antimicrobial activities against Agrobacterium tumefaciens.

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The antioxidative compounds of the Aster tataricus

  • Choi, Doo-Youn;Moon, Young-Hee;Woo, Eun-Rhan
    • Proceedings of the PSK Conference
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    • 2003.10b
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    • pp.207.1-207.1
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    • 2003
  • The Aster tataricus is a chinese traditional medicine called “Ziwan” which has an expectorative and remediable cough action. The anti-oxidant activities of A. tataricus were investigated. The MeOH extract of A. tataricus showed strong anti-oxidant activity in the NBT(nitroblue tetrazolium) method system, and thus fractionated with several solvents in to the EtOAc, n-BuOH, CH$_2$Cl$_2$, H$_2$O fraction. The EtOAc soluble fraction exhibiting strong anti-oxidant activity was further purified by repeated silica gel and sephadex LH-20 column chomatography. (omitted)

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