• Title/Summary/Keyword: Green house

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Rural Water Supply from the Irrigation Reservoir

  • 김대철;박성기
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.37 no.E
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    • pp.47-54
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    • 1995
  • Irrigation water has been mainly used for paddy rice. Irrigated paddy land tends to be recently converted to land for green house, farm house, and rural-industrial complex. Consequently, demand of water for crops, domestic & industrial, rural recreations, small-scaled hydropower, livestocks, and environment in the rural area, so called rural water, is rapidly increasing. In order to supply rural water, water in the existing irrigation reservoir could be enlarged by repairment of irrigation canal and reinforcement of irrigation reservoir, and be saved by the operation rule curve, utilization of dead water, and balanced storage management.

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Suggestion of the Characteristics of Element Technology and the Standard Model through the Comparison of Domestic Zero-energy Houses (국내 에너지제로하우스 비교를 통한 요소기술 특성 및 표준 모델 제시에 관한 연구)

  • Lee, Chung-Kook;Lee, Jeong-Cheol;Kim, Sang-Su;Suh, Seung-Jik
    • Journal of the Korean Society for Geothermal and Hydrothermal Energy
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    • v.8 no.2
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    • pp.27-35
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    • 2012
  • Five zero energy house models developed in Korea for the purpose of the energy performance were compared and analyzed in the study. The standard passive house model applying common technology and efficient energy performance elements was proposed. Standard passive house 5 models have been developed commonly aiming at 100% energy saving, applying high-performance and high-efficiency exterior thermal insulation, using 3 low-e coated window system, and targeting average 0.65 ACH to enhance privacy. Energy recovery ventilators and dry and cold radiant heating floor has been partially applied. Eco-design techniques such as the awning device, heat insulating door, using natural light have been used. Solar and geothermal systems as the application of renewable energy technologies have been commonly applied. And fuel cells were applied to a partial model. The standard model based on common technical elements and average performance of each element and obtained from five model analysis has been proposed in the study.

Studies on the Saponins in the Shoot of Aralia Elata (I) -Separation and Content of the Saponins- (두릅나무 순의 Saponin에 관한 연구 (I) - Saponin 의 분리 및 함량 -)

  • Lee, Mahn-Jung;Kim, Young-Hee
    • Journal of the Korean Society of Food Culture
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    • v.5 no.2
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    • pp.235-241
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    • 1990
  • We extracted and analysed the saponin fraction in the shoot of Aralia Elata. The results were as follows. 1. Natural samples had higher contents and more kinds of saponin than those grown in the green-house. The contents and the kinds of saponin decreased by steam treatment in both samples while the contents increased with the growth. The number of saponins in the natural raw sample (Nr2) which was at the most suitable stage for use was 37. 2. The saponin pattern of Nr2, with the large Fh saponin was specifically different from those with different harvest time which had large ‘d’ fraction. But all the natural samples which were steam-treated showed similar saponin patterns irrespective of harvest time. The saponin patterns of the green-house grown samples were simpler and showed less change during growing compared with those of the natural ones. All the steamed green-house grown samples showed the similar saponin patterns.

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A Development of Urban Farm Management System based on USN (USN 기반의 도시 농업 관리 시스템 개발)

  • Ryu, Dae-Hyun
    • The Journal of the Korea institute of electronic communication sciences
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    • v.8 no.12
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    • pp.1917-1922
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    • 2013
  • The objective of this study is developing urban farm management system based on USN for remote monitoring and control. This system makes it easy to manage urban farm and make the database of collected information for to build the best environment for growing crops. For this, we build a green house and installed several types of sensors and camera through which the remote sensing information collected. In addition, building a web page for user convenience and information in real time to enable control. We confirmed experimentally all functions related to stability for a long period of time through field tests such as collection and transfer of information, environmental control in green house. It will be convenient for farmers to grow crops by providing the time and space constraints and a lot of flexibility. In addition, factory, office, home like environment, including facilities for it will be possible to extend.