미량 금속폭로에 있어 생체시료의 특성(제2보) - 미량금속 폭로도와 개인적 요인과의 관계를 중심으로 -

김대선,김석재 한국환경보건학회 1992 한국환경보건학회지 Vol.18 No.2

This study was carried out to find out some characteristic responses of biological samples under the exposure of trace metals with the considering of Sex, age, residence period and smoking. Blood, Urine and Hair were collected from 116 dwellers in the vicinity of a smelting factory. Cd, Cu, Pb and Zn concentrations were determined by flame atomic absorption spectrophotometry and the following results were found important. 1) The concentrations of trace metals in the blood were 0.010+ 0.003 $\mu$g/ml in Cd, 0.82+ 0.11 $\mu$g/ml in Cu, 0.23_+ 0.13 $\mu$g/ml in Pb and 5.78_+ 1.43 $\mu$g/ml in Zn, those in the urine were 1.7_+ 1.7 $\mu$g/l in Cd, 16.5_+ 16.0 $\mu$g/l in Cu, 24.6_+ 23.0 $\mu$g/l in Pb and 367.7_+ 283.4 $\mu$g/l in Zn, and those in the hair were 0.52_+ 0.56 $\mu$g/g in Cd, 11.00_+4.01 $\mu$g/g in Cu, 8.53_+ 7.05 $\mu$g/g in Pb and 383.23_+ 110.56 $\mu$g/g in Zn. 2) In sex, the concentrations of Zn in the blood and urine of male were higher than those of female, however, the concentrations of Cd and Zn in the hair of female were higher than those of male. 3) The concentrations of Cd, Pb and Zn in the urine showed an increasing trend by age. 4) While the concentration of Cd in the urine increased, the concentration of Pb in the hair decreased by residential period in all the samples. 5) The concentrations of Cd and Zn in the blood and that of Zn in the urine of smoking group were higher than those of non-smoking group. The concentration of Pb in the blood of smoking group and those of Cd, Pb and Zn in the urine of non-smoking group showed increasing the trend by age. The concentrations of Cd and Zn in the urine of non-smoking group, the concentration of Zn in the hair of smoking group showed increasing trend by residential period, however, the concentrations of Pb in the blood and hair and that of Zn in the hair showed decreasing trend by residential period. 6) When the correlations of the concentrations between Zn (main smelting metal) and other metals were analyzed, Zn in the blood was significantly correlated with Cu, Pb and Zn in the urine (positively) and Zn in the urine was significantly correlated with Zn in the blood, Cd, Cu and Pb in the urine, and Pb in the hair (positively). Zn in the hair was significantly correlated with Cd in the urine and Cu in the hair (positively). 7) Consequently, it was useful to note that samples of urine showed higher sensitivity under the metal exposure than those of blood and hair in individual sampling. In addition, as trace metals showed higher accumulation in the hair of the groups, sampling of hair was more highly recommended than those of urine and blood in group sampling.

해양공간 정책시뮬레이터 개발방향

김대선,이문숙 해양환경안전학회 2023 해양환경안전학회 학술발표대회 논문집 Vol.2023 No.04

위성영상과 자기조직화 분류기법을 이용한 산림생태계교란 탐지: 우박 피해지와 매미나방 피해지의 사례연구

김대선,김은숙,임종환,이양원 대한원격탐사학회 2020 大韓遠隔探査學會誌 Vol.36 No.5

최근 기후변화가 심각해지고 이상기상 현상이 빈번해짐에 따라 산불, 산사태 이외에도 우박, 매미나방과 같은 흔치 않은 형태의 산림생태계교란이 발생하고 있다. 이 논문에서는 RapidEye와 Sentinel-2 영상에ISODATA(Iterative Self-organizing Data Analysis Technique Algorithm)를 적용하여, 2017년 화순의 우박 피해지와 2020년 치악산의 매미나방 피해지를 분석하였다. 우박 피해지의 경우, 본연구의 6월 영상분석과 선행연구의 7월 현장조사를 종합해볼 때, 우박에 의해 수목에 외상이 생긴 후에 가뭄이 겹치면서 6월에서 7월로 갈수록피해의 심각성이 보다 더 증가한 것으로 분석되었다. 2020년 치악산의 매미나방 피해지에서는 6월 영상에서상당한 나뭇잎 피해가 발견되었으며, 원주시에 인접한 낮은 고도의 사면에서 주로 피해가 발생한 것으로 나타났다. 기후변화에 의해 유발된 다양하고 특이한 산림생태계교란을 탐지함에 있어 위성원격탐사는 매우 효과적인 방법임에 틀림없으며, 우리나라에서 2024년 발사 예정인 농림업중형위성은 이와 같은 산림생태계교란을감시하는 데 적극적으로 활용될 수 있을 것으로 기대된다. Recent severe climate changes and extreme weather events have caused the uncommon types of forest ecosystem disturbances such as hails and gypsy moths. This paper describes the analysis of the forest ecosystem disturbances using ISODATA (Iterative Self-organizing Data Analysis Technique Algorithm) with the RapidEye and Sentinel-2 images, regarding the cases of the hail damages in Hwasun in 2017 and the gypsy moth damages in the Chiak Mountain in 2020. In the case of hail damages, the comparison of the June image of this study and the July field survey of the previous study showed that the damage severity increased from June to July as the drought overlapped after the trees were injured by the hails. In the case of gypsy moths, significant leaf damages were found from the image of June, and the damages were mainly distributed at the low-altitude slope near Wonju City. We made sure that satellite remote sensing is a very effective method to detect various and unusual forest ecosystem disturbances caused by climate change. Also, it is expected that the Korean Medium Satellite for Agriculture and Forestry scheduled to launch in 2024 can be actively utilized to monitor such forest ecosystem disturbances.

한국에서의 원격탐사와 생태계 관리

김대선,유철상,천승규 ( Dae Seon Kim,Cheol Sang Ryu,Seung Kyu Chun ) 한국환경영향평가학회 1994 환경영향평가 Vol.3 No.1

A Nationwide survey of ecosystem in the Republic of Korea was accomplished from 1986 to 1990 and in that survey, GIS and remote sensong were used partially. This was done by the Ministry of Environment(MOE), which introduced remote sensing and GIS for environment management in late 1980`s. Especially the National Institute of Environmental Research (NIER) are under the research on systematization of environmental information with an ultimate goal of application of GIS and remote sensing to environmental impact assessment. Although the Korean peninsula is in a non-tropical zone, we introduce two case studies on remote sensing applications to ecosystem managements in the Republic of Korea. One is a study on change detection in urban vegetation of Seoul with Landsat data and the other is a study on detection of insect damaged pine tree area using Landsat TM data. The techniques involved and the concl ision from these studies were relevant to vegetation studies in tropical ecosystem.

한,중 아동 폐활량과 그 영향요인 비교 연구

김대선,차정훈,유승도,박경렬 한국환경보건학회 2003 한국환경보건학회지 Vol.29 No.5

To evaluate the health effects caused by air pollution, we conducted a preliminary study on pulmonary function and it's related factors as a first year's work of a cooperative research project between Korea and China. 200 schoolchildren, grade 3 to 6, from two schools on Beijing and Helong in China were recruited to perform the pulmonary function test(PFT). A questionnaire concerning medical history and potential influence factors(such as passive smoking, heating or cooking fuels, use a stove or keep a pet in indoor, crowding within a room, and family income) was filled out by children's parents. Regression analysis was utilized to determine which potential influence factors were significantly correlated with PFT measure(FVC and FEV1). We also compared the pulmonary functions of Chinese children with those of other studies of Korean children. The results of regression analysis between potential influence factors and PFT measure were not statistically significants. As the results of comparison of the pulmonary functions(controlled by height, weight, and age) of Chinese children with those of other studies of Korean children, FVC and FEV1 were lower in Korean children(FVC 0.015L, FEV1 0.026L in boys; FVC 0.128L, FEV1 0.136L in girls) compared with Chinese children. In this study, we could not present causation between air pollution and health effect because of some limitations(such as absent of air pollution data), but the results will be used usefully for design of next year's study which is to assess acute effect of air pollution(especially, PM10, PM2.5) on pulmonary function.

청소년 진로의사결정검사의 개발과 타당화

김대선,탁진국,강지연,정재희,김기년 한국심리학회산하학교심리학회 2016 한국심리학회지 학교 Vol.13 No.1

The purpose of this study was to develop the Career Decision Making Profiles-Youth(CDMP-Youth) in Korea and to validate the scale. First, preliminary 130 items with 14 factors were obtained based on a number of ways. Second, These items were administered to 316 adolescents. Based on the first preliminary study, 53 items with 9 factors were obtained. These items were administered to 233 adolescents. Based on the second preliminary study, 61 items with 9 factors were obtained. Third, These items were administered to 1,206 adolescents, and finally 34 items with 9 factors were obtained. The total group was divided into two sub-groups in order to check cross-validity of the scale. The results of factor analyses showed that the 9 factor model with 34 items were satisfactory. The reliabilities of 9 factors were also satisfactory. These career decision making profiles factors were significantly related to criteria such as career satisfaction as well as grade, supporting criterion-related validity of the scale. Also these factors were significantly correlated with factors of the Career Decision Making Profiles developed by Gati et al (2010), supporting convergent validity of the scale. Lastly, the limitations and implications of the present study were discussed. 본 연구의 목적은 국내 청소년의 진로의사결정을 측정할 수 있는 검사를 개발하고 이를 타당화 하는 것이다. 본 연구에서는 첫째, 국내 청소년을 대상으로 하는 진로의사결정검사 개발을 위해 기존 문헌 연구 및 중․고등학교 진로진학상담교사 및 한국직업능력개발원 연구원들로 구성된 전문가 그룹과 중․고등학교 학생들에게 개방형 설문을 실시하였으며, 이를 토대로 14개 요인을 도출하고, 130문항을 개발하였다. 둘째, 개발한 예비문항을 중․고등학교 청소년 316명을 대상으로 1차 예비조사를 실시하였으며, 결과 분석과 문항 검토 과정을 통해 9개 요인과 53개 문항을 도출하였다. 1차 예비조사에서 분석된 문항에 보완된 문항들을 추가하여 9개 요인, 69문항으로 중․고등학교 청소년 233명을 대상으로 2차 예비조사를 실시하였으며, 분석 결과 9개 요인 61문항을 도출하였다. 셋째, 개발된 척도의 타당화를 위해 전국의 중․고등학교 청소년 1,206명을 대상으로 본 조사를 실시하여 척도의 신뢰도, 구성 개념 타당도, 준거관련 타당도, 수렴타당도를 검증하여 최종적으로 9개 요인 34문항을 완성하였다. 신뢰도 및 요인분석 결과 적합한 수준의 신뢰도와 9개 요인구조가 적합한 것으로 나타났다. 준거관련 타당도 분석에서는 진로만족, 진로의사결정 만족도, 학교생활만족도, 진로불안감, 학업성취도를 준거변인으로 선정하였으며, 준거관련 타당도 분석결과 진로의사결정 요인과 5개 준거는 정적 및 부적으로 유의하게 관련된 것으로 나타났다. 따라서 본 척도의 신뢰성과 타당성을 확인할 수 있었다. 마지막으로 본 연구의 의의와 제한점이 논의되었다.

초기유아식내 Zn함량과 추정일일 Zn섭취량

김대선,하만광 한국식품위생안전성학회 1987 한국식품위생안전성학회지 Vol.2 No.4

A survey to determine the zinc content of early-infant food sources was conducted. Collected samples from various lots were human milk from volunteer mothers and infant formula and market milk from markets. The determined results by Atomic absorption Spectrophotometer were as follows: 1. Averages of Zn were 201$\pm$144 $\mu\textrm{g}$/dl in human milk, 2.243$\pm$0.888 mg/100g in infant formula, 292$\pm$90$\mu\textrm{g}$/dl in market milk and showed the decline trend by the lactation periods in human milk. (p<0.01) 2. Estimated daily intake of Zn from human milk was higher than that from infant formula in 3 months old infants.

Sentinel-2 영상과 클러스터링 기법을 이용한 산불피해강도 분류 - 2020년 안동 산불을 사례로 -

김대선,이양원 건국대학교 기후연구소 2020 기후연구 Vol.15 No.3

The increased frequency and intensity of wildfires can cause damages to the ecosystem and the atmospheric environment. Rapid identification of the wildfire damages is also important for establishing forest restoration, budget planning, and human resources allocation. Because the wildfires need to be examined for vast areas, satellite remote sensing has been adopted as an effective method. Many studies for the detection of wildfires and the analysis of burn severity have been conducted using mid- and high-resolution images. However, they had difficulties in the sensitivity problem of NBR (Normalized Burn Ratio) for multi-temporal images. This paper describes the feasibility of the detection and classification of wildfire burn severity using Sentinel-2 images with K-means and ISODATA (Iterative Self-Organizing Data Analysis Techniques Algorithm) methods for a case of the Andong fire in April 2020. The result can be a reference to the appropriate classification of large-scale wildfire severity and decision-making for forest restoration planning.

시공간 통계기법을 활용한 해양공간정보의 정책분야 활용방안

김대선 해양환경안전학회 2020 해양환경안전학회 학술발표대회 논문집 Vol.2020 No.06

Global Trends in Mercury Management

김대선,최경희 대한예방의학회 2012 예방의학회지 Vol.45 No.6

The United Nations Environmental Program Governing Council has regulated mercury as a global pollutant since 2001 and has been preparing the mercury convention, which will have a strongly binding force through Global Mercury Assessment, Global Mercury Partnership Activities, and establishment of the Open-Ended Working Group on Mercury. The European Union maintains an inclusive strategy on risks and contamination of mercury, and has executed the Mercury Export Ban Act since December in 2010. The US Environmental Protection Agency established the Mercury Action Plan (1998) and the Mercury Roadmap (2006) and has proposed systematic mercury management methods to reduce the health risks posed by mercury exposure. Japan, which experienced Minamata disease, aims vigorously at perfection in mercury management in several ways. In Korea, the Ministry of Environment established the Comprehensive Plan and Countermeasures for Mercury Management to prepare for the mercury convention and to reduce risks of mercury to protect public health.