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Tuba Esatbeyoglu,Betina Obermair,Tabea Dorn,Karsten Siems,Gerald Rimbach,Marc Birringer 한국식품영양과학회 2017 Journal of medicinal food Vol.20 No.1
Taraxacum officinale, the common dandelion, is a plant of the Asteraceae family, which is used as a food and medical herb. Various secondary plant metabolites such as sesquiterpene lactones, triterpenoids, flavonoids, phenolic acids, coumarins, and steroids have been described to be present in T. officinale. Dandelion may exhibit various health benefits, including antioxidant, anti-inflammatory, and anticarcinogenic properties. We analyzed the leaves and roots of the common dandelion (T. officinale) using high-performance liquid chromatography/mass spectrometry to determine its sesquiterpene lactone composition. The main compound of the leaf extract taraxinic acid β-d-glucopyranosyl ester (1), a sesquiterpene lactone, was isolated and the structure elucidation was conducted by nuclear magnetic resonance spectrometry. The leaf extract and its main compound 1 activated the transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2) in human hepatocytes more significantly than the root extract. Furthermore, the leaf extract induced the Nrf2 target gene heme oxygenase 1. Overall, present data suggest that compound 1 may be one of the active principles of T. officinale.
Dante Ruiza,Betina Agaras,Patrice de Werrab,Luis G. Wall,Claudio Valverde 한국미생물학회 2011 The journal of microbiology Vol.49 No.6
Many seeds carry endophytes, which ensure good chances of seedling colonization. In this work, we have studied the seed-borne bacterial flora of rice varieties cultivated in the northeast of Argentina. Surface-sterilized husked seeds of the rice cultivars CT6919, El Paso 144, CAMBA, and IRGA 417 contained an average of 5×106 CFU/g of mesophilic and copiotrophic bacteria. Microbiological, physiological, and molecular characterization of a set of 39 fast-growing isolates from the CT6919 seeds revealed an important diversity of seed-borne mesophiles and potential plant probiotic activities, including diazotrophy and antagonism of fungal pathogens. In fact, the seed-borne bacterial flora protected the rice seedlings against Curvularia sp. infection. The root colonization pattern of 2 Pantoea isolates from the seeds was studied by fluorescence microscopy of the inoculated axenic rice seedlings. Both isolates strongly colonized the site of emergence of the lateral roots and lenticels, which may represent the entry sites for endophytic spreading. These findings suggest that rice plants allow grain colonization by bacterial species that may act as natural biofertilizers and bioprotectives early from seed germination.
China in 2005: Implications for the Rest of the World
( Channing Arndt ),( Thomas Hertel ),( Betina Dimaranan ),( Karen Huff ),( Robert Mcdougall ) 세종대학교 경제통합연구소 (구 세종대학교 국제경제연구소) 1997 Journal of Economic Integration Vol.12 No.4
This paper analyzes the impact of continued rapid growth in china on her trading partners using a multiregion, applied general equilibrium model. Contrary to conventional wisdom, we find that most developing countries benefit from china`s growth. Product differentiation plays a key role in this finding. systematic analysis of these welfare gains shows that, as expected, simple terms of trade calculations based on net trade positions and average world price changes predict a loss for the developing countries. However, with the exceptions of South Asia and Thailand, this loss is overshadowed by a positive movement in region-specific export price indices. Second-best effects also play a significant role in the gains for a number of the developing countries. (JEL Classification: Fl1, F15)
China in 2005 : Implications for the Rest of the World
Arndt, Channing,Hertel, Thomas,Dimaranan, Betina,Huff, Karen,McDougall, Robert 세종대학교 국제경제연구소 1999 Journal of Economic Integration Vol.12 No.4
This paper analyzes the impact of continued rapid growth in China on her trading partners using a multiregion, applied general equilibrium model. Contrary to conventional wisdom, we find that most developing countries benefit from China's growth. Product differentiation plays a key role in this finding. Systematic analysis of these welfare gains shows that, as expected, simple terms of trade calculations based on net trade positions and average world price changes predict a loss for the developing countries. However, with the exceptions of South Asia and Thailand, this loss is overshadowed by a positive movement in region-specific export price indices. Second-best effects also play a significant role in the gains for a number of the developing countries. (JEL Classification: F11, F15)