• 제목/요약/키워드: university development

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Antioxidant activity of phalaenopsis Sogo Yukidian 'V3' plant parts

  • Truong, Ngoc Minh;Phung, Thi Tuyen;Do, Tan Khang;Nguyen, Van Quan;Pham, Thi Thu Ha;Nguyen, Thanh Quan;Andriana, Yusuf;Truong, Mai Van;Tran, Dang Xuan
    • 한국작물학회:학술대회논문집
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    • 한국작물학회 2017년도 9th Asian Crop Science Association conference
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    • pp.34-34
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    • 2017
  • Various extracts of roots, stems, and leaves of Phalaenopsis Sogo Yukidian 'V3' were evaluated for total phenolics, total flavonoids, and antioxidant capacity. The conjugate form of stem samples contained the highest total phenolics ($5.092{\pm}0.739mg$ gallic acid equivalent per g dry weight) and the highest total flavonoids ($2.218{\pm}0.021mg$ rutin equivalent per g dry weight) was found in the hexane extract of leaves. The ethyl acetate extract of roots showed the maximum antioxidant activity as compared to other extracts. Of which, the $IC_{50}$ value of this sample were 0.070 mg/mL and 0.450 mg/mL in the 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging assay and reducing power, respectively, while the lipid peroxidation inhibition (LPI) value was as 94.2% by ${\beta}$-carotene bleaching method. Five phenolic compounds including caffeic acid, syringic acid, vanillin, ellagic acid, and cinnamic acid were quantified by high-performance liquid chromatography (HPLC). It is suggested that roots of the hybrid Phalaenopsis Sogo Yukidian 'V3' can be explodited as an effective source of antioxidants.

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Environmental factors affecting development of Aspergillus nidulans

  • Han, Kap-Hoon;Lee, Dong-Beom;Kim, Jong-Hak;Kim, Min-Su;Han, Kyu-Yong;Kim, Won-Shin;Park, Young-Soon;Kim, Heui-Baik;Han, Dong-Min
    • Journal of Microbiology
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    • 제41권1호
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    • pp.34-40
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    • 2003
  • Aspergillus nidulans, a homothalic ascomycete, has a complete sexual reproductive cycle as well as an asexual one. Both sexual and asexual development are known to be genetically programmed, but are also strongly affected by environmental factors including nutrients, light, temperature and osmolarity. We have examined these factors to define favored conditions for fruiting body (cleistothecium) formation. In general, fruiting body formation was enhanced where carbon and nitrogen sources were sufficient. Limitation of C-source caused predominant asexual development while inhibiting sexual development. When higher concentrations of glucose were supplied, more cleistothecia were formed. Other carbon sources including lactose, galactose and glycerol made the fungus develop cleistothecia very well, whereas acetate caused asexual sporulation only. Organic nitrogen sources like casein hydrolysate and glycine, and an increase in nitrate or ammonium concentration also enhanced sexual development. In addition to nutrient effects, low levels of aerobic respiration, caused either by platesealing or treatment with various chemicals, favored sexual development. Carbon limitation, light exposure and a high concentration of salts promoted asexual development preferentially, suggesting that stress conditions may drive the cell to develop asexual sporulation while comfortable and wellnourished growth conditions favored sexual development.

Studies on the Synthesis and In Vitro Antitumor Activity of the Isoquinolone Derviatives

  • Cheon, Seung-Hoon;Lee, Joon-Yeol;Chung, Byung-Ho;Choi, Bo-Gil;Cho, Won-Jea;Kim, Tae-Sung
    • Archives of Pharmacal Research
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    • 제22권2호
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    • pp.179-183
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    • 1999
  • 3-Arylisoquinolin-1(2H)-ones (2) are possible bioisosteres of the $5-[4^{l}-(piperidinomethyl)phenyl]-2<$,3-dihydroimidazo[2,1-$\alpha$]isoquinoline (1) which is in clinical evaluation for the treatment of cancer. Structure-activity relationship studies of 3-arylisoquinolin-1(2H)-ones. (2) led to the synthesis of 3-arylquinolin-2(1H)-ones (3). A number of 3-phenyl substituted quinolin-2(1H)-ones were synthesized and tested for their in vitro antitumor activity against four different human tumor cell lines and 3-phenyl-N-benzyl-3,4-dihydroquinolin-2(1H)-one (12) showed the most potent activity.

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산학연계를 이용한 선도산업 기술개발 프로그램 (Program for technological development of higher industry based industry-university cooperation)

  • 최성대;이미나
    • 한국기계가공학회지
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    • 제13권3호
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    • pp.1-5
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    • 2014
  • The purpose of this study is to develop a manpower training program of technological development. The types of developed manpower training models are education about the technological development process, literacy education about technological development, and field experience. The education about the technological development process is accomplished through industry-university cooperation based on shared technical concerns. Literacy education about technological development includes information about essential methods for manpower education. Field experience involves the development of effective teaching plans.

Inhibition Factor on the Development of the Domestic Wood Toy Industry

  • Hwang, Sung-Wook;Sung, Hee-Mee;Lee, Won-Hee
    • 한국가구학회지
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    • 제21권3호
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    • pp.229-236
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    • 2010
  • Wood material is positive with the concept of eco-friendly materials. Wood toy preference of foreign brands is also a real problem. Therefore, in this domestic situation on Toys Brand Development, there are many problems yet to be solved. At First, a wood material for toys requires the development of more sophisticated and precision materials. Second, new content, product development and training program development of the toys are needed. Characters and content development time and effort should be invested. In present, Korean brand development of wood toy with educational effects is very important issues as the use of wood to match the low carbon & green growth.

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Evaluation of an Abstract Component Model for Embedded Systems Development

  • Bunse, Christian;Choi, Yunja;Gross, Hans Gerhard
    • Journal of Information Processing Systems
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    • 제8권4호
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    • pp.539-554
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    • 2012
  • Model-driven and component-oriented development is increasingly being used in the development of embedded systems. When combined, both paradigms provide several advantages, such as higher reuse rates, and improved system quality. Performing model-driven and component-oriented development should be accompanied by a component model and a method that prescribes how the component model is used. This article provides an overview on the MARMOT method, which consists of an abstract component model and a methodology for the development of embedded systems. The paper describes a feasibility study that demonstrates MARMOT's capability to alleviate system design, verification, implementation, and reuse. Results indicate that model-driven and component-based development following the MARMOT method outperforms Agile development for embedded systems, leads to maintainable systems, and higher than normal reuse rates.