• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2005년도 학술발표회(1)
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• pp.735-736
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• 2005

• 환경영향평가
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• 제20권4호
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• pp.497-507
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• 2011

This research studied human health risk assessment of benzene from industrial complexes of Chungcheong Province (Seosan industrial complex) and Jeonla Province (Iksan industrial complex and Yeosoo industrial complex). The residents near the industrial complexes areas can be often exposed to volatile organic compounds (e.g., benzene, toluene, xylenes) through a number of exposure pathways, including inhalation of the organic pollutant via various environmental matrices (air, water and soil), contaminated water, and soil intake. Benzene is well known to be a common carcinogenic and toxic compound that is produced from industrial and oil refinery complexes. In this study, a number of samples from water, air, and soil were taken from the residential settings and public school zones located near the industrial complex sites. Based on the carcinogenic risk assessment, the risk estimates were slightly above $10{\times}10^{-6}$ at all three industrial sites. According to deterministic risk assessment, inhalation was the most important route. The distribution of benzene in the environment would be dependent on vapor pressure, and the physical property influencing the extent of the potential risks. Non-carcinogenic risk assessment of benzene shows that the values of Hazard Index(HI) were much lower than 1.0 at all industrial complexes. Therefore, benzene was not a cause of concern in terms of non-carcinogenic risk posed to the residents near the sites. When compared to probabilistic risk assessment, the CTE(central tendency exposure) cancer risk values of deterministic risk assessment were close to the mean values predicted by the probabilistic risk assessment. The RME(reasonable maximum exposure) values fell within the range of 95% to 99.9% estimated by the probabilistic risk assessment. Since the values of carcinogenic risk assessment were higher than $10{\times}10^{-6}$, further detailed monitoring and refined risk assessment for benzene may be warranted to estimate more reliable and potential inhalation risks to receptors near the industrial complexes.

• 한국수자원학회논문집
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• 제30권6호
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• pp.691-698
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• 1997

댐 및 하천제방에 대한 위험도 해석을 위해 유역의 상류부에 두 개의 댐이 공존하고 있는 하천유역에 적용하였다. 그 결과, A댐의 경우 200년 빈도의 강우조건에 대해서는 안전했으나 PMP 조건하에서 위험도를 나타내고 있었고, B댐의 경우는 200년 빈도 및 PMP 조건하에서 안전한 것으로 나타났다. 유역의 유출계수, 초기수위 및 댐과 여수로와 관련된 자료의 불확실도를 고려하여 계산된 위험도는 Monte-Carlo 기법과 AFOSM 기법에 있어 대등한 결과를 나타냈다. 제방의 위험도 해석에 있어 본 연구는 Manning의 조도계수가 수위변동에 미치는 영향이 지배적임을 판단할 수 있었다. Manning의 조도계수를 고려한 Monte-Carlo 모의는 삼각형 분포를 고려하여 수행되었다. 본 연구의 모형은 홍수범람지도의 작성, 홍수예보시스템 및 홍수피해 경감대책의 수립 등에 기여할 수 있을 것으로 판단된다.

• 수산해양기술연구
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• 제56권4호
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• pp.299-315
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• 2020

Tuna fisheries were applied to an integrated ecosystem-based fishery risk assessment method using indexes of target species status, inhabited species in a target ecosystem, habitat quality and socio-economic benefit of affected fisheries. This study suggested more effective and efficient management measures to break away from traditional management methods, such as limitation of catch and fishing effort. The results presented that the objective risk index (ORI_S) on sustainability of bigeye and yellowfin tunas by purse seine fishery was estimated high due to the high catch ratio of small fishes. The ORIs of biodiversity (ORI_B) and habitat quality (ORI_H) of purse seine fishery were also estimated at a high level from using fish-aggregating devices (FAD). However, due to skipjack tuna's high catches, the ORI of socio-economic benefit (ORI_E) was estimated at a very low level. Due to the high bycatch rate, ORI_B was high, and ORI_S and ORI_H were evaluated at a low level in longline fishery. Due to strengthern of fishing restrictions and increase of fishing costs, the ORI_E was assessed to be very high. The ecosystem risk index (ERI) for two tuna fisheries was assessed low, but the overall FAD management by purse seine fishery is necessary at the ecosystem level.

• Asian Pacific Journal of Cancer Prevention
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• 제14권9호
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• pp.5207-5212
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• 2013

Background: Physical activity has been found to play a role in cancer prevention. The purpose of this matched case-control study was to investigate the association between physical activity levels, water intake, constipation and colorectal cancer (CRC). Materials and Methods: Two hundred and thirty-two patients diagnosed with CRC (125 male, 107 female) were enrolled in this case-control study. Cases were matched to 271 population controls (137 male, 134 female). Results: Drinking more than 4 cups of water daily decreased the risk of CRC by 33-42%; however, this effect was non-significant. Having constipation was found to be a significant risk factor for developing CRC with an OR=6.284 (95%CI=2.741-14.40). With reference to sedentary behavior, minimum activity (600-3000 Metabolic Equivalents Task (MET)) had 43% protection against CRC and the level of Health Enhancing Physical Activity OR was 0.58 (at 95%CI; 0.37-0.92). A significant negative association was found between CRC and physical activity levels expressed as both METs and MET-hours/week (p for trend=0.017 and 0.03, respectively). Among females, a significant trend of reduction in CRC by 62% was observed with increasing the level of physical activity expressed in MET (p for trend=0.04). Conclusions: The risk of CRC may be reduced by adopting a healthy lifestyle and practicing physically activity regularly, especially among females. Consuming adequate amounts of water and healthy bowel motility could also reduce the risk of CRC.

• Journal of Veterinary Science
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• 제23권3호
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• pp.36.1-36.14
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• 2022

Background: Since 2003, the H5 highly pathogenic avian influenza (HPAI) subtype has caused massive economic losses in the poultry industry in South Korea. The role of inland water bodies in avian influenza (AI) outbreaks has not been investigated. Identifying water bodies that facilitate risk pathways leading to the incursion of the HPAI virus (HPAIV) into poultry farms is essential for implementing specific precautionary measures to prevent viral transmission. Objectives: This matched case-control study (1:4) examined whether inland waters were associated with a higher risk of AI outbreaks in the neighboring poultry farms. Methods: Rivers, irrigation canals, lakes, and ponds were considered inland water bodies. The cases and controls were chosen based on the matching criteria. The nearest possible farms located within a radius of 3 km of the case farms were chosen as the control farms. The poultry farms were selected randomly, and two HPAI epidemics (H5N8 [2014-2016] and H5N6 [2016-2017]) were studied. Conditional logistic regression analysis was applied. Results: Statistical analysis revealed that inland waters near poultry farms were significant risk factors for AI outbreaks. The study speculated that freely wandering wild waterfowl and small animals contaminate areas surrounding poultry farms. Conclusions: Pet birds and animals raised alongside poultry birds on farm premises may wander easily to nearby waters, potentially increasing the risk of AI infection in poultry farms. Mechanical transmission of the AI virus occurs when poultry farm workers or visitors come into contact with infected water bodies or their surroundings. To prevent AI outbreaks in the future, poultry farms should adopt strict precautions to avoid contact with nearby water bodies and their surroundings.

• 한국수자원학회논문집
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• 제57권1호
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• pp.21-33
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• 2024

최근 기후변화로 영향으로 재해의 양상이 다양화 및 대형화되고 있다. 이에 우리나라는 안전한 치수계획을 세우기 위해 수자원장기종합계획에서 홍수위험도 평가를 위해 홍수피해잠재능(Potential Flood Damage, PFD)의 개념이 도입되었다. 하지만, PFD의 문제점이 제기되면서 다양한 연구들이 진행되어왔다. 선행연구 대부분 PFD 인자를 수정·보완하거나 인자를 새로 추가하는 연구들이 진행되었다. 본 연구는 위험성 인자를 내포하고 있는 홍수위험지도를 사용하여 기존의 치수안전도 평가방법을 개선하고, 대상지역인 영·섬진강권역을 중심으로 평가하고자 한다. 본 연구에서 제시한 평가방법은 위험성 요소 및 잠재성 요소 분석, PFD 및 홍수방어수준 분석, 치수안전도 평가로 크게 3가지로 제시하였다. 본 연구에서 제시한 개선된 평가방법은 각종 치수안전도 평가 및 치수계획 수립시 활용될 것으로 기대된다.

• 한국물환경학회지
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• 제29권2호
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• pp.165-169
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• 2013

Freshwater fish intake is a critical parameter for deriving water quality criteria and water quality standards for protection of human health based on human health risk assessment. Although the freshwater fish intake parameter should be accurate and representative of Korean fish consumption for the water quality criteria to be reliable, data are limited in Korea and have low reliability. In this study, Korean National Health and Nutrition Examination Survey data from 2008-2010 were analyzed to reevaluate freshwater fish consumption. Based on these results, an average consumption rate of 3.0 g/day per person, a $90^{th}$ percentile consumption rate of 0.0 g/day per person, an average consumption rate of 65.7 g/day per fish consumer, and a $90^{th}$ percentile consumption rate of 153.4 g/day per fish consumer were proposed for derivation of water quality criteria using a conservative approach and various exposure scenarios.

• Environmental Analysis Health and Toxicology
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• 제15권3호
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• pp.99-106
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• 2000

Ethylenediaminetetraacetic acid (EDTA) and nitrilotriacetic acid (NTA) are various applied as chelating agents for metal ions, then they are widely used in many industrial processes and domestic products. A method is described for the determination of EDTA and NTA in water samples by GC/MS . The reaction temperature, reaction time and pH for esterification of EDTA and NTA were investigated using 10% sulfuric acid-methanol, ethanol and propanol. Optimum conditions were obtained by the esterification in 80$\^{C}$ for 1hr with ethanol. Method detection limits of ethylated EDTA and NTA in the 200 ml of water samples were 0.05 ng/ml, respectively, EDTA and NTA could be determined in the range of 0.05∼23.6 and 0.05∼7.0 ng/ml in treated water, and in the range of 0.06∼25.0 and 0.05∼6.40 ng/ml in raw water respectively. Risk assessments with EDTA and NTA exposure by drinking water ingestion were carried out. Based on the results of analysis, chronic daily intakes of EDTA and NTA would be less than the value of acceptable daily intake or tolerable daily intake.

• 한국수자원학회논문집
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• 제30권5호
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• pp.527-537
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• 1997

본 연구에서는 수자원 관리와 저수지의 최적 운영에 영향을 미치는 위험의 수준을 결정하고 위험의 특징을 규명하기 위하여 위험도 평가시 평가기준이 될 수 있는 신뢰도, 복원도, 취약도 등의 지표를 수학적으로 정의하였다. 그리고 저수지 시스템의 기능 수행 능력을 평가하기 위해서 추계학적 모의 발생기법을 통하여 모의 발생된 월 유입량 자료를 이용하여 대청 다목적댐을 대상으로 저수지 물수지 분석을 실시하였다. 분석 결과를 토대로 저수지 시스템의 기능 수행 능력을 평가하기 위하여 시간, 빈도, 양적 기준 신뢰도 및 복원도 지수, 취약도를 산정하였으며, 상호간의 관계에 대하여 검토하였다.