• Title/Summary/Keyword: 김유식

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Glutathione Content in Various Seedling Plants, Vegetables, and the Processed Foods (각종 유식물체, 채소 및 가공식품 중의 글루타치온 함량)

  • Kim, Ju-Sung;Shim, Ie-Sung;Kim, Myong-Jo
    • Korean Journal of Food Science and Technology
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    • v.41 no.5
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    • pp.592-596
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    • 2009
  • In this study, we investigated the levels of glutathione (GSH) and its oxidized form (GSSG) in more than 40 kinds of plant materials including seedling plants, grains, vegetables, and processed foods. The glutathione contents in the seedling plants were ranged from 0 to $120{\mu}mol/100g$. In addition, the different levels of glutathione were observed within the same family and between species. In the case of marketed grains and vegetables, azuki and kidney beans of leguminosae contained the high levels of glutathione, whereas glutathione was scarcely detected in the processed bean foods (bean paste, soybean sauce, etc.). Overall, a higher GSH content in food may contribute to a higher added value.

Preference of Adult Alfalfa Weevil, Hypera postica (Gyllenhal), (Coleoptera: Curculionidae), to Different Seedlings of Upland Crops (알팔파바구미 성충의 밭작물 유식물에 대한 기주선호성)

  • Bae, Soondo;Kim, Hyunju;Mainali, Bishwo Prasad;Yoon, Youngnam;Lee, Geonhwi
    • Korean journal of applied entomology
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    • v.52 no.4
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    • pp.371-377
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    • 2013
  • Occurrence of adult alfalfa weevil, Hypera postica Gyllenhal, was observed at Chinese milk vetch field, and host plant preference of its $1^{st}$ generation adult was observed at greenhouse and Chinese milk vetch field. The over-wintered adult of the weevil appeared from late March and peaked in mid April while the $1^{st}$ generation adult appeared from late April and peaked in late May. However, the occurrence of over-wintered adult was very low contrary to the $1^{st}$ generation adult which was very high with some variations among observed years. In greenhouse, host plant preference of $1^{st}$ adult generation of H. postica was evaluated with 11 different seedlings. H. postica was found to occur in significantly higher number on Chinese cabbage seedling followed by soybean, and kale at 7 days after releasing(DAR). Corn, crown daisy and sorghum were found to be the least preferred with nil occurrence of the weevil. Seedlings damage rate by H. postica feeding at 7DAR was the most severe on Chinese cabbage(60.0%) followed by soybean(50.0%), kale(30.0%), foxtail millet(16.7%), proso millet(13.3%) and lettuce(3.3%) significantly. Also, seedlings damage rate by H. postica at 7DAR in Chinese milk vetch field had shown the similar trend with Chinese cabbage(46.7%), soybean(43.3%), kale(23.3%), foxtail millet(13.3%) and proso millet(13.3%) in greenhouse significantly. Accordingly, results on host plant preference of H. postica from this study can be used as a basic information for safe cultivation of upland crops at near or around green manure crop field.

TDX-1 운용관리 및 유지보수

  • 김영시;천유식
    • Proceedings of the Korean Institute of Communication Sciences Conference
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    • 1986.04a
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    • pp.169-176
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    • 1986
  • The function of administration and maintenance on the TDX-1 digital switching system, which have been developed in ETRI(Electrotechnology and Telecommunications Research Institute), are reported. In administration, the functions of charging, statistics, data handling, man-mechine communication and I/0 device control are described. In maintenance, the function of fault detection and processing, status handling and alarm described.

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Multi-layer Structure Method for Manufacturing SiOB with Low Capacitance (낮은 정전용량을 가진 실리콘 광학벤치를 제작하기 위한 적층구조 방법)

  • 김유식;이중희;박문규;장동훈;김태일
    • Proceedings of the Optical Society of Korea Conference
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    • 2003.02a
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    • pp.300-301
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    • 2003
  • As the demand for high frequency(bandwidth) optical module is increased, there is a need for fabricating silicon optical bench(SiOB) with low parasitic impedance. In this paper, we discuss multi-layer structure method for manufacturing SiOB with low capacitance. This structure method decreases the capacitance between the conductive patterns for about 94∼97% compared to the conventional structure without raising the resistivity of silicon, or increasing the thickness of the dielectric film.

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