Jae-Wook Yoon

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Platycodon grandiflorum A. DC (Campanulaceae) is used as a traditional oriental medicine and also as a food in Korea. Here we investigated its antioxidant activity, and isolated and identified its active compounds. Petroleum ether extracts from the whole root of P. grandiflorum were fractionated by silica gel column chromatography using a solvent gradient(More)
Organizational decision support systems (ODSL$ are a new type of decision support systems(DSSJ focusing on the organization-wide issues rather than individual, group, or departmental issues. Because of its organization-wide scope, a typical ODSS cuts across organizational functions or hierarchical lqers. Thus, searidess integration with organization's(More)
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