• Title/Summary/Keyword: Natural park

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A Study on Corrosion Resistance of Reinforced Concrete Structures using Natural Inorganic Minerals (천연 무기 광물계 혼화재료를 혼입한 철근콘크리트 구조물의 부식저항성에 관한 연구)

  • Tae, Sung Ho;Park, Jae Young;Kim, Jae Young;Park, Jae Seung;Kyung, Je Woon;Nam, Ho Yoon
    • KIEAE Journal
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    • v.7 no.4
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    • pp.127-133
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    • 2007
  • As a fundamental study on the corrosion resistance of reinforced concrete structures using Natural Inorganic Minerals exposed to carbonation environment, The test specimens were concrete(W/C=60%) with Natural Inorganic Minerals content of 0%, 10%. Accelerated carbonation and autoclave corrosion accelerated curing were then conducted with them. The corrosion resistance of steel in concrete with Natural Inorganic Minerals content of 0%, 10% was examined by corrosion form, half-cell potential, polarization resistance, corrosion area and weight loss after 24 hours of autoclave corrosion accelerated curing.The results of the study showed that as for steel in concrete with Natural Inorganic Minerals content of 10%, the corrosion resistance was more excellent than steel in concrete with Natural Inorganic Minerals content of 0%.

The Building Strategies of Natural Park Integration Monitoring System Based on Geographic Information Analysis System

  • Bae, Min-Ki;Lee, Ju-Hee
    • Journal of Korean Society of Forest Science
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    • v.95 no.5
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    • pp.605-613
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    • 2006
  • The goal of this study was to propose building strategies of web-based national park monitoring system (WNPMS) using geographic information analysis system. To accomplish this study, at first, this study selected and made integrated management indicators considering physical, ecological, and socio-psychological carrying capacity in national park. Secondly, this study built up an integrated management this system with statistical analysis program for execution of various multivariate analysis and spatial analysis. Finally, WNPMS could identify the relationship among visitors, natural resources, and recreation facilities in national park, and forecast the future management status of each national park in Korea. There results of this study will contribute to prevent the damage of natural resources and facilities, improve visitor's satisfaction, prevent an excess of carrying capacity at national park, and established tailored management strategies of each national park.

Design of Unam-Ji Waterfront Park (운암지 수변공원 설계)

  • 박찬용
    • Journal of the Korean Institute of Landscape Architecture
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    • v.28 no.4
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    • pp.117-124
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    • 2000
  • This paper presents a design of urban waterfront park using agricultural reservoir in urban fringe area to meet increasing leisure demand for urban resident and to improve resident's quality of life through preventing the reservoir from urban use after reclamation. The site, Unam-Ji, is located on northern part of Taegu metropolitan area, having 17,791 square meters. We had designed this park from 1997 to 1998. After analyzed such factor as accessibility, current land uses, topography, hydrology, vegetation and landscape, climate, and soil, we constructed basic design scheme and principes such as conservation of natural resources, meeting user's recreation demands, providing opportunities for experiencing natural process, integrating naturalness and amenity of the site, and comfortable place with natural dynamism. Based on these principles, we have designed Unam-Ji waterfront park having intrinsic characteristics of the site, maintaining water quality and ecological restoration and improving water-based recreation opportunities. After evaluation of such criteria of design alternative as land use and circulation, spatial organization, convenience for use of and maintenance, conservation of natural environment, and degree of achieving planning and design goals, and maintaining landscape, we have visualized and formalized waterfront park in design process, which is consisted of four squares-- green square for multiple uses, water-based recreation square, pedestrian roads and decks near waterfront, performance square and fords near waterfront. In conclusion, this waterfront park design contributes to improve quality of urban development through preserving agricultural as an important component of urban water system and provide important planning and design implications in urban open space planning.

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Actual Vegetation Potential Natural Vegetation of Pukhansan National Park, Mid-western Korea (북한산국립공원의 현존식생과 잠재자연식생)

  • 이은복
    • The Korean Journal of Ecology
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    • v.20 no.6
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    • pp.439-450
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    • 1997
  • The potential natural vegtation of the Pukhansan National Park area, mid-western Korea, was inferred from the actual vegetation. With the phytosociological classification and field surveys, the actual vegetation map of the park area was made on a scale of 1:25, 000, including fourteen communities. By the analyses of the species diversity, the age structure, the human interferences and various informations on vegetation changes, two pathways of late stage succession from Pinus densiflora forests to the climatic climax were suggested. One is from Quercus serrata forests to Q. mongolica forests throughout the mountain and the other, from Q. variabilis or Q. acutissima forests to Carpinus laxiflora forests in lower parts. Considering the vegetation changes, the potential natural vegetation of the park area mainly composed of Q. mongolica, C. laxiflora, P. densiflora and Zelkova serrata forest as the climatic and/or edaphic climax was inferred.

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New Hydroperoxides from Aster oharai

  • Park, Sang-Zin;Kwon, Hak-Cheol;Min, Yong-Deuk;Lee, Sung-Ock;Lee, Won-Bin;Yang, Min-Cheol;Chung, Ae-Kyung;Lee, Kang-Ro
    • Proceedings of the PSK Conference
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    • 2001.10a
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    • pp.258.2-259
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    • 2001
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