물활론적 관점의 환경수업이 초등학생들의 환경인식에 미치는 영향

김순식 한국환경과학회 2011 한국환경과학회지 Vol.20 No.12

이상기후 발생이 가을배추 생산자 및 소비자에게 미치는 영향

조재환 ( Jae Hwan Cho ),서정민 ( Jeong Min Suh ),강점순 ( Jum Soon Kang ),홍창오 ( Chang Oh Hong ),신현무 ( Hyun Moo Shin ),이상규 ( Sang Gyu Lee ),임우택 ( Woo Taik Lim ) 한국환경과학회 2013 한국환경과학회지 Vol.22 No.12

The purpose of this article is analyzing the economic impacts of abnormal climate on fall chinese cabbage farmers and consumers in Korea, with employing the equilibrium displacement model. Our results show that there were little difference in gross farm income, even though there were significant yield reductions due to abnormal climate changes. However periodic occurrences of abnormal climates caused serious damage to consumption levels which had declined by 10.6~17.1 percent with higher prices by 15.3~24.6 percent than normal climate years since 1990.

최근 37년간 우리나라 주요도시의 고온일을 대상으로 한 상대습도의 경년변화

박명희 ( Myung Hee Park ),이준수 ( Joon Soo Lee ),서영상 ( Young Sang Suh ),한인성 ( In Seng Han ),배헌균 ( Hyun Gun Hae ),김해동 ( Hae Dong Kim ) 한국환경과학회 2013 한국환경과학회지 Vol.22 No.12

those regions for 37 years based on 1996 (from 1974 to 2011) aimed at high temperature days, and examined them by stage regarding daily maximum temperature. For large cities and small cities, in general relative humidity had been likely to increase at high temperatures of 30℃ or over before 1996, whereas it has decreased since 1996. For suburban areas, relative humidity had been prone to diminish before 1996, whereas it has been likely to either increase since 1996 or rarely some of the cities have not shown any change. The increasing tendency of relative humidity before 1996 in large cities and small cities is believed to be because of an increase of the latent heat of vaporization by the supply of steam from cooling towers established in downtown areas. Meanwhile, the decreasing tendency from 1996 is concluded to be caused by the change from counter-current circular cooling towers, which produce a great quantity of steam including arsenic acid, to cross-flow cooling towers, which produce hardly any steam containing arsenic acid. This change was in accordance with the modification and pursuit of an urban planning law that ordered cooling towers that had been installed on rooftops be installed in the basement of buildings in consideration of a “Green network creation” project by the Ministry of Environment, urban beautification, concerns since 1996 over building collapses, and according to an argument that steam containing arsenic acid could be harmful to human health owing to chemicals contained in the water in the cooling tower in summer.

環境影響評價의 制度化에 關한 硏究 및 改善方向

김성수 한국환경과학회 1993 한국환경과학회지 Vol.2 No.3

This paper attempt; to analyze the institutionalization process of Environmental Impact Assessment(EIA) system within the context of Korean environmental policy. The implementation of EIA in the 1980's was not seriously considered by other government agencies and was sometimes degraded as mere formality due to the inherent problems of the system. With viewing the theory and practice of EIA in Korea, this paper argues that it is essential to reinforce ex post facto management of EIA, incorporate the participation of residents of concerned areas, upgrade the validity of assessment by selecting a credible assessment-agenices and develop the required technologies. Finally, this paper acknowledge the necessity of devising the mechanism to reconcile the conflict between the regional interest and the national interest.

인공 및 자연강우를 이용한 축산자원화물의 배출특성에 관한 연구

장미향 ( Mi Hyang Jang ),송시훈 ( Si Hoon Song ),이현규 ( Hyun Kyu Lee ),최윤영 ( Yun Young Choi ),황하선 ( Ha Sun Hwang ),김은정 ( Eun Jung Kim ),김용석 ( Yong Seok Kim ),이재관 ( Jae Kwan Lee ),류덕희 ( Doug Hee Rhew ),박배경 ( 한국환경과학회 2013 한국환경과학회지 Vol.22 No.12

This study conducted a laboratory simulation using artificial and natural rainfall in order to investigate the runoff characteristics of livestock resources through the analysis of the surface runoff water and infiltration water by rainfall intensity and fertilization level. Cattle manure and pig liquid fertilizer was used as livestock resource. As a result of this study, it was observed that the surface runoff occurred over 32 mm/hr rainfall intensity, and flow rate of the surface runoff water and the runoff ratio of contaminant parameters from livestock resource was increased, as rainfall intensity was stronger. With doubled fertilization level, T-N increased in compost and the amount of CODMn runoff also considerably increased in liquefied fertilizer. In the case of natural rainfall, the runoff ratio of T-P clearly increased in compost and the T-N of final surface runoff ratio in compost and liquefied fertilizer was ranged from 0.13047 to 0.13623 with stronger rainfall intensity.

양이온 K+, Na+, Mg2+, Ca2+, Al3+ 형태로 개질한 제올라이트에 의한 리튬 이온의 흡착 특성

박정민 ( Jeong Min Park ),감상규 ( Sang Kyu Kam ),이민규 ( Min Gyu Lee ) 한국환경과학회 2013 한국환경과학회지 Vol.22 No.12

The adsorption of lithium ion onto zeolite was investigated depending on contact time, initial concentration, cation forms, pH, and adsorption isotherms by employing batch adsorption experiment. The zeolite was converted into different forms such K+, Na+, Mg2+, Ca2+, and Al3+. The zeolite had the higher adsorption capacity of lithium ion in K+ form followed by Na+, Ca2+, Mg2+, and Al3+ forms, which was in accordance with their elctronegativities. The lithium ion adsorption was explained using the Langmuir, Freundlich, and Dubinin-Radushkevich adsorption isotherms and kinetic models. Adsorption rate of lithium ion by zeolite modified in K+ form was controlled by pseudo-second-order and particle diffusion kinetic models. The maximum adsorption capacity obtained from Langmuir isotherm was 17.0 mg/g for zeolite modified in K+ form. The solution pH influenced significantly the lithium ions adsorption capacity and best results were obtained at pH 5-10.

구미시 하수처리 방류수가 하류 하천 영양염류에 미치는 영향: 부하량 비교

성진욱 ( Jin Uk Seong ),이상팔 ( Sang Pal Lee ),이재균 ( Jae Kyun Lee ),박제철 ( Je Chul Park ) 한국환경과학회 2013 한국환경과학회지 Vol.22 No.12

This study investigated water quality of effluents and stream from the sewage treatment plants located at Gumi Complex 4, Gumi, and Wonpyeong in Gumi. Downstream region was found to increase the concentration of nutrients for sewage treatment plant effluent. Both phosphorus and nitrogen were accounted most as soluble form. In particular, the high ratio of dissolved effluent of sewage treatment plants were investigated. In the streams, Phosphorus concentration was high during rainy season and nitrogen concentration was high in the dry season. Sewage treatment plant effluent was relatively less microbial activity and nutrient concentrations were higher in the winter. TN/TP ratio was the highest in the upstream region and the lowest in the sewage treatment plant effluent. The effect of the nutrient matter from a discharge of a sewage treatment plant on rivers varied depending on the size of the river and the treatment plant. However, the influence of the concentration was greater than that of flowrate. Sewage treatment plant effluent loads phosphorus, nitrogen accounted for 8% and 6% respectively at the point N3 of the Nakdong river.

버드나무류 (Salix spp.)의 계절학적 특성과 주요 기상요인 상관분석

김성보 ( Seong Bo Kim ),김지윤 ( Ji Yoon Kim ),임란영 ( Ran Young Im ),도윤호 ( Yuno Do ),박희순 ( Hee Sun Park ),주기재 ( Gea Jae Joo ),김구연 ( Gu Yeon Kim ) 한국환경과학회 2013 한국환경과학회지 Vol.22 No.12

The objective of this study was to analyze correlation between phenological characteristics of Salix spp. and meteorological factors in the Upo wetlands. Phenology of Salix subfragilis Andersson and Salix chaenomeloides Kimura was monitored from 2007 to 2012. Meteorological variables were monitored by Korea Meteorological Administration (Hap-chon). Average date of flowering, fruiting, seed dispersion was 86, 113, 136 days for S. subfragilis and 112, 140, 164 days for S. chaenomeloides as Julian days. Flowering of S. subfragilis and S. chaenomeloides were correlated with daily mean air temp. in March (r=-0.92, r=-0.85, p<0.05). Fruiting of S. subfragilis was correlated with total precipitation between Jan and March of previous year (r=-0.90, p<0.01), however, the fruiting of S. chaenomeloides was highly correlated with max. temp. in Jan of previous year (r=0.99, p<0.01). Seed dispersion of both species is correlated with min. temp. in Feb. Phenology monitoring will contribute to understanding Salix spp. response against climate change.

양식장 넙치 폐사어를 이용한 단백질 소재의 개발에 관한 연구(2) -산업화공정 연구-

강건희 ( Keon Hee Kang ),이민규 ( Min Gyu Lee ),감상규 ( Sang Kyu Kam ),정갑섭 ( Kap Seop Jeong ) 한국환경과학회 2013 한국환경과학회지 Vol.22 No.12

In manufacturing of flatfish skin collagen peptide (FSCP) and flatfish protein hydrolysate (FPH) by reuse of dead flatfish from fish farm in Jeju island, the industrial process was optimized with the laboratory scale research and the on-field process. Segmented unit processes from raw material incoming to shipment were established to produce commercial product of FSCP and FPH. Total plate counts of FSCP were twenty five times of FPH, but food poisoning bacteria were not detected in two samples. FSCP and FPH were safe from heavy metal such as Pb(II), Cd(II) and Hg(II). The residual contents of antibiotics and disinfection matter in FSCP and FPH were not detected. The optimized process for mass production made the one-third of the running time and two times of the yield. From economic analysis, the production cost was estimated to 22,000 and 12,000 won/kg for FSCP and FPH, respectively. Therefore the product from the reuse of dead flatfish was expected to have a considerable competitive price and high added-value functional food material compared with other commercially available fish products.

부산시내 석면슬레이트지붕 건축물로부터의 석면 노출 및 건강위해성 평가

정재원 ( Jae Won Jeong ),조순자 ( Sunja Cho ),박근태 ( Geun Tae Park ),이상준 ( Sang Joon Lee ) 한국환경과학회 2013 한국환경과학회지 Vol.22 No.12

This study was performed to evaluate the asbestos exposure levels and to calculate excess lifetime cancer risk (ELCR) for the risk assessment of the asbestos fibers released from asbestos-cement slate roofing (ASR) building. Total number of ASR buildings was into 21,267 in Busan, and 82.03 percent of the buildings was residential houses, and 43.61 percent of the buildings was constructed in 1970s. For this study, ten buildings were selected randomly among the ASR buildings. The range of airborne asbestos concentration in the selected ten ASR buildings was from 0.0016 to 0.0067 f/mL, and the concentration around no-admitted ASR buildings was higher than that around admitted buildings. The ELCR based on US EPA IRIS (integrated risk information system) model is within 3.5E-05 ~ 1.5E-04 levels, and the ELCR of no-admitted ASR buildings was higher than 1.0E-04 (one person per million) level that is considered a more aggressive approach to mitigate risk. These results indicate that the cancer risk from ASR buildings is higher than other buildings, and systematic public management is required for control of no-admitted ASR buildings within near future.