• 자원리싸이클링
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• 제32권2호
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• pp.43-51
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• 2023

본 연구에서는 자동차엔진의 신품제조시와 재제조시 발생하는 환경영향을 전과정 관점에서 산정하고 이를 기반으로 온실가스 저감효과를 산정하였다. 자동차엔진 원부자재 원료취득 및 제조공정에서 배출되는 온실가스량은 신품제조시 약 3,473 kg, 재제조시 약 872 kg으로 재제조를 통해 저감되는 온실가스량은 약 2,601kg으로 나타나 폐기 단계를 제외한 전과정 측면에서 저감효과가 있는 것으로 분석되었다. LCA 가중화 분석 결과 신품 제조시 환경영향은 1.07E+03 Eco-point, 재제조시 2.67E+02 Eco-point로 나타났으며, 주요 6대 영향 범주 중 지구온난화 점유비율이 99.72%, 99.68%로 높게 나타났다.

• 한국대기환경학회지
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• 제9권1호
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• pp.1-10
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• 1993

A brief description on the greenhouse gases, the greenhoue effect, sea level changes, forcing of climate, the history of Earth's changing climate based on the IPCC REPORT and the records of the recent variation of the climate in the Republic of Kore is presented here for help enhancing awareness of the issues. The climate of the Earth has the potential to be changed on all timescales by the fluctuations of the concentrations of radioactively active greenhouse gases, solar radiation, aerosols and albedo. However, the rate of the recent global warming seems to be larger and rapid than any have occurred thorughout recorded history enough to draw the world-wide attention and worry concerned with the theme of environment and development. There are still uncertainties in the predictions relating to the timing, magnitude and the pattern of the climatic change due to the current incomplete understanding of various aspects of the complex processes. Nonetheless, the scientific results avaliable is sufficient to allow for decisive precautionary measures to be taken.

• 한국환경과학회지
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• 제18권8호
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• pp.933-940
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• 2009

Recently, wind power generation is an emerging industry expanding its market rapidly thanks to the increasing need to solve the scarcity of fossil fuels and the risk of potential global warming. Wind power generation has shown to be an effective response plan to global warming, showing the most price competitiveness among the renewable energy sources by its higher efficiency. Therefore wind energy has attracted considerable attention as the industrial growth drive for the next generation. Considering Korea's high dependence of overseas energy resources, the importance of wind power is growing as the most effective alternative energy source to ensure energy security as well as becoming a key strategic industry for exports. In this study, the social and economic effects of the wind power industry is discussed and the current status and the future prospects of the wind energy market is also examined.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2005년도 학술발표회 논문집
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• pp.138-142
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• 2005

The change of precipitation and temperature due to the global. warming eventually caused the variation of water availability in terms of potential evapotranspiration, soil moisture, and runoff. In this reason national long-term water resource planning should be considered the effect of climate change. Study of AOGCM-based scenario to proposed the plausible future states of the climate system has become increasingly important for hydrological impact assessment. Future climate changes over East Asia are projected from the coupled atmosphere-ocean general circulation model (AOGCM) simulations based on Intergovernmental Panel on Climate Change (IPCC) Special Report on Emissions Scenarios (SRES) A2 and B2 scenarios using multi-model ensembles (MMEs) method (Min et al. 2004). MME method is used to reduce the uncertainty of individual models. However, the uncertainty increases are larger over the small area than the large area. It is demonstrated that the temperature increases is larger over continental area than oceanic area in the 21st century.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2006년도 추계학술대회
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• pp.66-69
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• 2006

The idea of $CO_2$ sequestration in the ocean is proposed to be an effective mitigation strategy to counteract potential global warming due to the greenhouse effect Therefore, in the present study, calculations of the dissolution behavior of $CO_2$ hydrate when liquid carbon dioxide is released at 1,000m and 1,500m in depth are performed. The results show the liquid $CO_2$ injected in the ocean becomes $CO_2$ bubble at between 350m and 500m in depth, and the injection from a moving ship is a more effective method of dissolution than through a fixed pipeline. It so also noted that the ultimate plume generated from $CO_2$ bubbles repeats expansion and shrinking due to the peel ins from a fixed pipeline.

• 한국도로학회논문집
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• 제16권3호
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• pp.59-66
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• 2014

PURPOSES : This study is to suggest heavy snow risk analysis in Seoul. METHODS : Recently, the increase of extreme weather caused by global warming raises the occurrences of unpredictable natural disasters and the loss potential of human disasters by land use facilities accumulation. It is necessary to develop the risk analysis for the natural and human disasters. RESULTS : In this study, heavy snow risk analysis among natural disasters in Seoul was suggested. The spatial unit of risk analysis level was established for the lines and administrative districts. CONCLUSIONS : The risk analysis was performed using risk matrix of disaster occurrence score and disaster damage score. The components affecting the risk disaster analysis by types were analyzed and the application of heavy snow risk analysis was suggested.

• 신재생에너지
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• 제2권4호
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• pp.4-11
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• 2006

The idea of $CO_2$ sequestration in the ocean is proposed to be an effective mitigation strategy to counteract potential global warming due to the greenhouse effect. Therefore, in the present study, calculations of the dissolution behavior of $CO_2$ hydrate when liquid carbon dioxide is released at 1,000m and 1,500m in depth are performed. The results show the liquid $CO_2$ injected in the ocean becomes $CO_2$ bubble at between 350 m in depth, and the injection from a moving ship is a more effective method of dissolution than through a fixed pipeline. It so also noted that the ultimate plume generated from $CO_2$ bubbles repeats expansion and shrinking due to the peeling from a fixed pipeline.

• 적정기술학회지
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• 제5권2호
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• pp.118-125
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• 2019

제 5차 IPCC보고서(2014)에 의하면, 지구온난화의 원인은 온실가스(GHG)에 기인하며 가장 중요한 화석연료의 연소에서 발생하는 CO₂, NO₂, 메탄 등이다. IPCC는 2099년까지 지구 온도가 3.7℃ 상승하고 해수면은 0.63 m 상승할 것으로 예측하였다. 기후변화는 SDGs의 매우 중요한 한 부분이며, 그중 지구온난화는 잠재적으로 인류 건강에 가장 큰 위협이며 여러 다양한 질병의 원인이다. 만약 현재의 가스 배출과 토지이용의 추세가 계속된다면 미래의 세대는 질병, 부상, 자연재난으로 인한 사망, 감염, 영양부족, 대기오염으로 인한 사망율 등 매우 심각한 상황에 직면하게 될 것이다. 이 글에서는 홍수, 가뭄, 열 스트레스. 대기오염, 물부족, 영양실조, 전염성질환, 매개질환 등 지구기후변화와 이와 관련된 자연재난과 인류 건강의 관계를 조명하여 보았다.

• Environmental Engineering Research
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• 제24권1호
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• pp.117-126
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• 2019

Activated carbon is carbon produced from carbonaceous source materials, such as coconut shells, coals, and woods. In this study, an activated carbon production system was analyzed by carbonization and activation in terms of environmental impact and human health. The feedstock of wood wastes for the system reduced fossil fuel consumption and disposal costs. Life cycle assessment methodology was used to analyze the environmental impacts of the system, and the functional unit was one tonne of wood wastes. The boundary expansion method was applied to analyze the wood waste recycling process for activated carbon production. An environmental credit was quantified by avoided impact analysis. Specifically, greenhouse gases discharged from 1 kg of activated carbon production system by feeding wood wastes were evaluated. We found that this system reduced global warming potential of approximately $9.69E+00kg\;CO_2-eq$. compared to the process using coals. The environmental benefits for activated carbon production from wood wastes were analyzed in contrast to other disposal methods. The results showed that the activated carbon system using one tonne of wood wastes has an environmental benefit of $163kg\;CO_2-eq$. for reducing global warming potential in comparison with the same amount of wood wastes disposal by landfilling.

• 한국토양비료학회지
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• 제43권6호
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• pp.886-891
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• 2010

농경지에서 발생되는 온실가스인 $CO_2$, $CH_4$ 그리고 $N_2O$의 배출량을 토성별 지구온난화잠재력으로 평가하기 위하여 수원시에 위치한 국립농업과학원 기후변화생태과 시험포장에서 온실가스 배출시험을 수행하였다. 고추밭에서 온실가스배출 시험은 2005년에 노지재배로 재배하였다. 시비는 화학비료와 돈분퇴비를 시용하였으며, 식양토와 사양토에서 온실가스배출에 영향을 주는 토양수분과 토양온도 등 관련 요인별로 온실가스배출량을 측정하였다. 이와 같이 고추밭에서 $CO_2$, $CH_4$, $N_2O$의 배출량을 확인하고, 지구온난화잠재력으로 환산한 온실가스의 양을 파악하여 온실가스 관리에 필요한 기초 자료로 활용하고자 하였다. 시험한 결과는 다음과 같다. (1) 토성에 따른 $CO_2$배출량은 식양토는 12.9 tonne $CO_2\;ha^{-1}$, 사양토는 7.6 tonne $CO_2\;ha^{-1}$로 나타났다. $N_2O$ 배출량은 식양토 35.7 kg $N_2O\;ha^{-1}$, 사양토 9.2 kg $N_2O\;ha^{-1}$로 나타났으며, $CH_4$ 배출량은 식양토에서 0.054 kg $CH_4\;ha^{-1}$, 사양토 0.013 kg $CH_4\;ha^{-1}$였다. (2) $CO_2$, $CH_4$, $N_2O$의 총 배출량을 지구온난화잠재력 (GWP-Global Warming Potential)으로 환산한 결과, 식양토에서 24.0 tonne $CO_2$-eq $ha^{-1}$, 사양토에서는 10.5 tonne $CO_2$-eq. $ha^{-1}$로 식양토에서 많은 온실가스 배출량을 보였다.