• Journal of Plant Biotechnology
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• 제36권4호
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• pp.360-365
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• 2009

Over the last five years, we have conducted research on risk assessment of domestically developed genetically modified (GM) crops and found a number of factors which could delay risk assessment process. In this review, we described such cases and discussed the problem of transgene cassette integration, the lack of information on vectors, the poor quality control in seed production and absence of bioinformatic analysis on amino acid sequence homology before GM crop development. To solve these problems, we have suggested the introduction of the screening system of elite event before risk assessment process and quality control strategies for GM seed production. In addition, we suggested that the developers of GM crops should understand the importance of risk assessment and management for the commercialization of those crops and consider the biological and ecological characteristics of host plants. Consistent communications may need to be established between GM crop developers, risk assessors and risk managers at the initial stages of GM crop development to reduce trial-and-errors.

• 한국태양에너지학회 논문집
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• 제31권1호
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• pp.121-129
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• 2011

The concept of bio-housing comes from the new social and culture housing trends. Previous research have shown standards on performance criteria for bio-housing. However some criteria on that research were overlapped because they were merged from various current housing assessment systems. This current research looks on the duplication of criteria which were impossible to evaluate current housing assessment, and make specialized factors for bio-housing developments. Finally the research shows the magnitude of factors for bio-housing performance criteria.

• Nuclear Engineering and Technology
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• 제52권9호
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• pp.2085-2091
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• 2020

The license for Kori-1, the first commercial reactor in Busan, Korea, was terminated in June 2017; therefore, preparations are being made for its decommissioning. Because the radioactivity of Bio-shield varies greatly throughout the structure, the doses received by the workers depend on the location, order, and duration of dismantling operations. Thus, a model for evaluating the worker external dose during the dismantling of the Kori-1 bio-shield was developed, and work scenarios for dose assessment were designed. The Dose evaluation code VISIPLAN was used for dose assessment. The dose rate around the bio-shield was evaluated and the level of exposure to the operator was evaluated according to the work scenario. The maximum annual external dose was calculated as 746.86 mSv for a diamond wire saw operator under dry cutting conditions, indicating that appropriate protective measures, such as changing dismantling sequence, remote monitoring, shield installation, and adjustment of work team are necessary for the safe dismantling of the bio-shield. Through these protective measures, it was found that the worker's dose could be below the dose limit.

• 환경영향평가
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• 제23권1호
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• pp.11-17
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• 2014

Since the Renewable Portfolio Standard (RPS) would be started in 2012, the use of renewable energy should be 11% of total energy use including bio-fuel in 2030. The economic efficiency for renewable energy in B power plant was considered with the bio-diesel, wind power and solar power. The Net Present Value (NPV) and Benefit/Cost Ratio(BC) were used for the economic efficiency with the cost and benefit analysis. In case of bio-diesel, the cost resulted from the fuel conversion and the benefit would be created with trade and environmental improvement. With regard to wind power and solar power, the construction cost would be required and benefit factors would be same as the bio-diesel. The wind power was the best of economic efficiency of renewable energy as the results of NPV and BC ratio. Whereas, the market of wind power was very popular and the techniques of wind power has been developing rapidly.

• 한국환경농학회지
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• 제32권4호
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• pp.245-251
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• 2013

BACKGROUND: The objectives of this study are to investigate the contamination levels of heavy metals in soil, ground water, and agricultural product near the abandoned Boeun and Sanggok mine areas in Korea and to assess the health risk for these local residents exposed to the toxic heavy metals based on analytical data. METHODS AND RESULTS: By the results of human health risk assessment for local residents around Boeun and Sanggok, human exposure to cadmium, copper, arsenic from soil and to lead, cadmium, and arsenic from rice grain were higher in Sanggok, but human exposure to zinc and arsenic from ground water was higher in Boeun. By the results of hazard index (HI) evaluation for arsenic, cadmium, copper, lead, and zinc, HI values in both areas were higher than 1.0. This result indicated that the toxicity hazard through the continuous exposure to lead, cadmium, arsenic from rice, ground water, and soil would be likely to occur to the residents in the areas. Cancer risk assessment for arsenic, risks from the rice were exposed to one to two out of 10,000 people in Boeun and one of 1,000 people in Sanggok. These results showed that the cancer risks of arsenic in both areas were 10~100 times greater than the acceptable cancer risk range of US EPA ($1{\times}10^{-6}{\sim}1{\times}10^{-5}$). CONCLUSION(S): Therefore, if these two local residents consume continuously with arsenic contaminated soil, ground water, and rice, the adverse health effects (carcinogenic potential) would be more increased.

• Bulletin of the Korean Chemical Society
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• 제26권2호
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• pp.327-330
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• 2005

• Ecology and Resilient Infrastructure
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• 제8권3호
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• pp.154-163
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• 2021

본 연구는 최근 국내에 귀화식물로 기록된 미국쥐손이의 적합 서식지의 분포에 영향을 미치는 요인을 파악하고, 미래의 변화를 예측하고자 수행되었다. 전국을 대상으로 총 68개 지점에서 미국쥐손이의 출연 자료를 수집하고 MaxEnt 모델을 적용하여 기준년대(1981~2010)와 기후시나리오에 따른 미래의 적합 서식지 분포를 예측했다. 미국쥐손이의 분포에는 강수량 계절성(bio15), 가장 따뜻한 분기의 평균기온(bio10), 가장 건조한 분기의 평균기온(bio09)가 크게 기여하는 것으로 나타났다. 기후변화에 따라 미국쥐손이의 높은 수준의 적합 서식지는 기준년도에 우리나라 면적의 6.43%를 차지하였고, 먼미래(2071~2100)에는 SSP2-4.5 하에서 92.60%까지, SSP5-4.8 하에서 98.36%까지 차지하는 것으로 예측되었다.

• 환경생물
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• 제40권1호
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• pp.1-10
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• 2022

기후변화로 인한 지구온난화는 강수량과 기온에 영향을 주며, 다양한 종들의 서식지와 생물다양성에 상당한 영향을 줄 수 있다. 최근 국제 교류의 증가와 기후변화 등의 원인으로 국내로 새롭게 유입되어 정착하는 외래식물이 증가하고 있지만, 기후변화가 이들 외래식물의 국내 분포에 어떤 영향을 주는지에 대한 연구는 부족한 실정이다. 본 연구는 침입외래식물 큰망초(C. sumatrensis)의 현재 분포와 생물기후 변수를 활용하여 RCPs 기후변화 시나리오에 따른 적합 서식지 분포 변화를 예측하였다. 큰망초는 현재 우리나라 남부 지방에서 제한된 분포를 보이고 있으며, 이들의 분포에는 가장 건조한 분기의 평균기온(bio09), 가장 더운 달의 최고기온(bio05), 등온선(bio03)이 영향을 미치는 것으로 나타났다. 기후변화 시나리오에 따라 큰망초의 미래 적합 서식지 면적은 증가할 것으로 전망되었다. 큰망초와 같은 침입외래종의 분포 변화는 자생식물의 생존을 위협할 수 있으며 생태계 교란을 일으킬 수 있다. 따라서 기후변화에 따른 외래종 분포에 대한 연구는 자생식물뿐만 아니라 생물다양성 보전에 중요한 데이터로 활용될 수 있으며, 향후 서식지 복원과 생물자원을 관리하기 위한 정책자료로 활용될 수 있다.

• Safe Food
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• 제3권3호
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• pp.19-22
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• 2008

• 환경영향평가
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• 제22권1호
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• pp.1-17
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• 2013

Carbon sequestration on soil is one of the counter measurements against climate change in agricultural sector. Increasing incorporation of organic fertilizer would increase soil organic carbon (SOC) but it could bring high potential of nutrient losses which would result in water quality degradation. In this paper, literature review on soil organic carbon behavior according to agricultural management is presented. The results of field experiment to identify the effect of organic and commercial fertilizer applications on SOC and runoff water quality were also presented. Field experiment confirmed increased SOC and nutrient concentrations in runoff water as application rate of organic fertilizer increase. The potential use of simulation model to develop best agricultural management practice considering carbon sequestration and water quality conservation at the same time is discussed and monitoring and modeling strategies are also suggested to achieve the goal.