• Title/Summary/Keyword: Green House

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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.

Fabrication and Stability of Pd Coated Ta/YSZ Cermet Membrane for Hydrogen Separation (Pd 코팅된 Ta/YSZ 수소분리막의 제조 및 안정성)

  • Lee, Sang-Jin;Jeon, Sung-Il;Park, Jung-Hoon
    • Membrane Journal
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    • v.20 no.1
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    • pp.69-75
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    • 2010
  • Cermet membrane was fabricated with tantalum as hydrogen-permeable metal and $Y_2O_3$-stabilized $ZrO_2$ (YSZ) as ceramic supporter. Ta/YSZ cermet membrane was prepared through pre-sintering in He atmosphere and then main sintering under high vacuum and the impurities to originate from sintering and brazing could be removed by mechanical polishing. As-prepared membrane showed dense structure with continuous channel of tantalum. Hydrogen permeation experiment was conducted in the region of $200{\sim}350^{\circ}C$ using Ta/YSZ membrane coated with Pd for hydrogen dissociation. The crack in membrane was formed at $300^{\circ}C$ and the Pd coating layer has flaked off in spots. XRD results showed that tantalum reacted with hydrogen to form $Ta_2H$. The lattice expansion by $Ta_2H$ caused deterioration for membrane.

Estimation of Biomass Loss and Greenhouse Gases Emissions from Surface Layer Burned by Forest Fire (산불로 인한 지표층 연소량 및 온실가스 배출량 추정)

  • Lee, Byungdoo;Youn, Ho Jung;Koo, Kyosang;Kim, Kyongha
    • Journal of Korean Society of Forest Science
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    • v.101 no.2
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    • pp.286-290
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    • 2012
  • Globally, the forest fires are a significant contributor of carbon dioxide and other greenhouse gases in the atmosphere. In this study, fuel load consumed by forest fire and emission of green house gases were analysed in the surface layer. For this, remaining fuel was collected and weighed with the species (Japanese red pine, deciduous) and the forest fire types (surface fire, crown fire) in the 51 forest fires. 8,361 kg/ha fuel load was consumed in deciduous forest damaged by surface fire, and 8,055 kg/ha, 12,333 kg/ha in Japanese red pine burned by surface fire and crown fire. The combustion ratios were 78, 59, and 90%, respectively. 15,856 kg/ha the green house gases such as $CO_2$, $CH_4$, $CH_4$ in deciduous forest burned by surface fire was emitted and 14,834 kg/ha, 22,709 kg/ha in Japanese red pine burned by surface fire and crown fire.

Risk Assessment of Human Exposure to Methidathion during Harvest of Cucumber in Green House

  • Byoun Ji-Youn;Choi Hoon;Moon Joon-Kwan;Park Hee-Won;Liu Kwang-Hyeon;Ihm Yang-Bin;Park Byeoung-Soo;Kim Jeong-Han
    • Toxicological Research
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    • v.21 no.4
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    • pp.297-301
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    • 2005
  • Farmers are generally expressed to pesticides through mixing loding, application activity and harvesting of crop after application of pesticides. The present work investigated the exposure and risk of furathiocarb to workers when harvesting of cucumber was carried out in green house after application of furathiocarb EC. Glove was used for the hand exposure assessment, socks for foot and dermal patches for the other parts of body. Personal air monitor equipped with a XAD-2 resin was used for the respiratory exposure assessment. During the harvest of cucumber in green house, the initial rate of potential dermal exposure (Day 1) for methidathion was 1.3 mg/hr. The major exposure parts were hand $(78\~83\%),\;thigh\;(5\~7\%)$ and arms $(6\~9\%)$ during 3 days' harvest. No exposure was detected from the respiratory monitoring. For risk assessment, the potential dermal exposure (PDE), the absorbable quantity of exposure (AQE) and the margin of safety (MOS) and margin of exposure (MOE) were calculated. In risk assessment of harvester exposure for 7days, all MOS was > 1 and MOE was > 100 indicating that possibility of risk was little.

Estimation on the Emission Reduction of SULEV LPG Vehicles (SULEV LPG 자동차의 배출가스 저감효과 평가)

  • Park, Jun-Hong;Lee, Jong-Tae;Kim, Sun-Moon;Kim, Jeong-Soo;Kang, Dae-Il;Lim, Yun-Sung;Han, Bo-Young
    • Journal of Korean Society for Atmospheric Environment
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    • v.28 no.1
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    • pp.68-76
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    • 2012
  • SULEV (Super Ultra Low Emission Vehicle) which is one of the emission standards in Fleet Average System introduced to Korea from 2009 is known as the most severe standard to achieve with internal combustion engine. Considering low sales volume of hybrid vehicles in Korea, vehicle manufacturers are required to develop SULEV technologies for conventional gasoline and LPG vehicles to meet the future Fleet Average standard. In this study, the comparison of emissions has been made between SULEV developed and ULEV LPG vehicles mainly produced in this time. To estimate the emission reduction of SULEV vehicles, CVS-75 and NIER test modes have been used. CVS-75 has been used for emission certification of gasoline and LPG vehicles. NIER modes cover various average vehicle speed and reflect Korean real driving patterns better than CVS-75. The test results show that SULEV LPG vehicles have very high potential to reduce $NO_x$ in regulated emissions, $N_2O$ in green house gases and toluene in VOCs. However, SULEV LPG vehicles don't affect much on the reduction of CO and total green house gases.

Study on the reduction of green house effect gas emission by RORO ship coastal transport of import-export container cargo (RORO선을 이용한 수출입컨테이너화물의 연안운송에 의한 온실가스 배출량 삭감에 관한 연구)

  • Kim S. H.;Koh C. D.
    • Journal of the Korean Society for Marine Environment & Energy
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    • v.6 no.3
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    • pp.16-25
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    • 2003
  • In this paper, the reduction of green house effect gas CO₂ emission and NOx gas emission by using the RORO ship coastal transport of import-export container cargo was investigated. At first, the domestic CO₂ gas emission and the transportation of import-export container cargo were Investigated. Next, the characteristic of a RORO ship and CO₂ emission standard and NOx emission standard were investigated. And also, the reduction of CO₂ emission and NOx emission by the shift of coastal transport from land transport for the transportation of import-export container cargo between Kyongin area and Pusan Port were calculated. Finally, the change of CO2 and NOx gas emission due to the change of the share of coastal transportation and the load efficiency of RORO ship are investigated. The research results show that the shift of RORO ship coastal transport from land transport was very effective to reduce the CO₂ emission but it was no good to reduce the NOx emission.

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A Study on Green Building Certification Criteria of Educational Facilities based on LEED Certified Cases (LEED 인증사례 분석을 통한 교육시설의 녹색건축 인증기준에 관한 연구)

  • Ahn, Dong-Joon
    • Journal of the Korean Solar Energy Society
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    • v.34 no.3
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    • pp.122-132
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    • 2014
  • Sustainability became the keyword of our society worldwide, and it is undoubtful that buildings are mainly responsible for green house gas emission and energy consumption. Among different project types, educational facility was selected in this study to find out what needs to be addressed in order to provide students better learning environments. Scorecards from 32 LEED certified school projects went through analysis and essential components as design strategies in sustainable educational facilities were extracted based on application rate of each credit in LEED for School(2009). The extracted data were further analyzed in comparison with related components in G-SEED. The results would be used as guidelines for those of who design sustainable education facilities and prepare green building certifications. and it would further foster architect's responsibility towards green society in Korea.

A study on determinants having influence on heating value of waste-derived solid fuels (폐기물고형연료 발열량에 영향을 미치는 요인에 관한 연구)

  • Kang, Min-Su;Kim, Yang-Do;Ryu, Young-Bok;Lee, Gang-Woo;Shon, Byung-Hyun;Lee, Man-Sig
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.11 no.1
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    • pp.220-227
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    • 2010
  • The manufacturing of the solid fuel using wastes has been studied on the purpose of the reduction of green house gases and the profit-making as alternative fuel, and thus, it has become as technically improved as to be used as business. However, the production of solid fuel with multi-wastes combination needs a caution while the solid fuel with one-waste has not a significant component change. This study analyzes the solid fuel components through the practical plant experiment to the various wastes. The resulted data shows a different pattern than the theoretical one in the component analysis, and it can be concluded that the adequate uniform mixing has a great influence on the manufacturing of the solid soil.

Economic Valuation of Green Spaces for Residents in non-Capital Areas (비수도권 주민들의 녹지공간 경제가치 추정)

  • Choi, Andy Sungnok
    • Environmental and Resource Economics Review
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    • v.30 no.1
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    • pp.1-26
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    • 2021
  • This paper aims to examine economic values of green spaces for non-Capital areas that have been rarely studied. Choice experiments were applied to two dissimilar but adjoining areas: The City of Jeonju and Wanju County. Split-sample surveys allowed to compare between apartment dwellers and single- or multi-family house dwellers, and across differing types of green spaces. According to the results, significant and substantial preferences might prevail not only for large cities, but also for agricultural areas. The mean willingness-to-pay (WTP) values of apartment dwellers for the view of a river/lake or mountain were generally smaller than those of Seoul, while the overall access values showed the opposite relationships. House dwellers in Jeonju showed substantially larger economic values for green spaces than those of the counterparts in Seoul, except for the access value of a river/lake. The findings grant follow-up studies investigating the reasons for the anomalous preferences particularly in Jeonju and identifying new management policies for non-Capital areas.

An Exploratory Study on the Difference between Recognition and Planning of Green Business/IT:Focus on Korean Manufacturing Industry (그린 비즈니스/IT도입시 인식에 따른 실행계획 차이에 대한 탐색적 연구:한국 제조기업을 중심으로)

  • Hwang, Young Hwan;Kim, Soung Hie;Jo, Hyeon
    • Journal of Information Technology Services
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    • v.12 no.4
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    • pp.289-305
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    • 2013
  • Recently, Green Business/IT becomes very important for management of company, because there are many new regulations about the environment protection, especially to reduce green house effect. The purpose of this research is to investigate present situation of Korean manufacturing industry about the Introduction of Green Business/IT. For the people who is in charge of the decision whether to Introduce Green Business/IT or not, this paper aim to provide some useful findings. We made a research framework consisting of 5Ps (Philosophy, Partner, Process, Product, Public) from literature review, then we found that almost all of the companies in manufacturing industry prepare for the regulations by introducing and using Green Business/IT concepts. There are some differences between production goods industry and consumer's goods industry. Also we found that there are a lot of relationships with recognition level and planning level. The higher the level of profitability, the lower the level of preparing social responsibility. This means there are two opposite perspectives(profitability, social responsibility). Therefore organizations who are adopting Green Business IT/should strive for harmony of sight.