http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
우병렬 ( Byung Lyul Woo ),이현수 ( Hyun Su Lee ),안호기 ( Ho Gi Ahn ),정순원 ( Soon Won Jung ),황문영 ( Moon Young Hwang ),박충희 ( Choong Hee Park ),유승도 ( Seung Do Yu ),양원호 ( Won Ho Yang ) 한국환경과학회 2011 한국환경과학회지 Vol.20 No.1
Perceived air quality (PAQ) is defined as evaluation of indoor air satisfaction and comfortable sensory by occupants. However, there are differences between criteria of indoor pollutants and lowest sensory thresholds. In this study, we compared indoor PAQ by questionnaire with measured benzene, toluene and nitrogen dioxide (NO2) concentrations in home indoors. The NO2 concentration was the highest in Seoul, while benzene and toluene were the highest in Asan. Average PAQ score in winter was higher than that in summer. Significant correlations between PAQs of home indoor air pollution and measured pollutant concentrations were not shown and correlation coefficients (r) ranged between -0.453<r<0.258.Several groups have been divided to analyze what may affect PAQ scores such as gender, city, home indoor smoking, passive smoking, and self-reported respiratory symptoms. Gender, city, and self-reported respiratory symptoms by indoor air quality were associated with high PAQ scores by using of logistic regression analysis. We are confirmed that no association between concentrations of home indoor pollutant and PAQ scores. Therefore we further need to develop new indicator indoor air pollutants, measurement, and evaluation by PAQ.
우병렬 ( Byung Lyul Woo ),이현수 ( Hyun Su Lee ),솨이지엔페이 ( Shuai Jianfei ),김동건 ( Dong Gun Kim ),양원호 ( Won Ho Yang ) 대구가톨릭대학교 자연과학연구소 2010 자연과학연구논문집 Vol.8 No.1
In this study, we investigated the indoor concentrations of formaldehyde in buildings nearby university. We selected seven buildings such as laboratory, library, laundry, restaurant, billiard, single room, and internet cafe. The highest indoor concentration of formaldehyde was 68.51㎍/㎥ in laboratory. Whereas lowest indoor concentration of formaldehyde was 11㎍/㎥ in laundry. Every buildings are not exceed the Korean indoor standard regulated by government. Indoor/outdoor ratio was more than 1 except laundry.
이현수 ( Hyun Soo Lee ),권은경 ( Eun Kyung Kwon ),솨이지엔페이 ( Shuai Jianfei ),우병렬 ( Byung Lyul Woo ),양원호 ( Won Ho Yang ) 대구가톨릭대학교 자연과학연구소 2009 자연과학연구논문집 Vol.7 No.1
Indoor air quality can be affected by indoor sources, ventilation, decay and outdoor levels. Although technologies exist to measure these factors, direct measurements are often difficult. Toluene and nitrogen dioxide (NO2) concentrations of residential indoor and outdoor were simultaneously measured and compared in 16 houses, using passive samplers during every 3 days for 60 days. Using a mass balance model and regression analysis, penetration factor (ventilation rate divided by sum of ventilation rate and deposition constant) and source generation factor (source generation rate divided by sum of ventilation rate and deposition constant) were calculated by multiple indoor and outdoor measurements. The mean concentrations of toluene of indoor and outdoor on residential indoor air quality were estimated to be 38.6±31.9ppb and 38.4±31.0ppb, respectively. On the other hand, mean concentration of NO2 were 22.08±6.96ppb and 26.71±7.04ppb, respectively. These results could be explained that concentration of indoor and outdoor air pollutants sources to residential indoor air concentrations are different. In conclusion, concentration of outdoor air and indoor sources affecting indoor air quality were effectively characterized using multiple indoor and outdoor measurements.
산업단지와 농촌지역의 주택실내.외 휘발성유기화합물과 이산화질소 농도 평가
이현수(Hyun Soo Lee),권은경(Eun Kyung Kwon),우병렬(Byung Lyul Woo),손부순(Bu Soon Son),양원호(Wonho Yang) 한국실내환경학회 2010 한국실내환경학회지 Vol.7 No.4
This study presents residential indoor and outdoor exposure concentrations distributions of volatile organic compounds (VOCs; benzene, toluene, xylene) and nitrogen dioxide (NO2) in industrial area (case) and agricultural area (control) during 5 days. Concentrations of VOCs and NO2 were measured with passive samplers in residential indoor and outdoor. Most of benzene, toluene and NO2 mean concentrations in case area were higher than those in control area. Considering the indoor and outdoor ratios (I/O) were higher than 1, the residence might be have the sources of indoor air pollutants such as smoking and using of gas range. Residential indoor concentrations of benzene, toluene, and NO2 with indoor smokers were higher than those and without indoor smokers. In conclusion, it is suggested that personal exposures to air pollutants might be affected by indoor sources as well as outdoor pollutants emitted from industrial complex, and indoor air quality and outdoor air quality should be simultaneously considered to reduce the personal exposure to air pollutants.
이현수 ( Hyun Soo Lee ),김동건 ( Dong Gun Kim ),솨이지엔페이 ( Shuai Jianfei ),우병렬 ( Byung Lyul Woo ),양원호 ( Won Ho Yang ) 대구가톨릭대학교 자연과학연구소 2010 자연과학연구논문집 Vol.8 No.1
Personal exposures of nitrogen dioxide(NO2) were studied in a population of university students. In this study, dily personal NO2 concentrations of 37 university students were measured and comparison of measured NO2 level(ppb) of university students and housewives. The close association between measured indoor NO2 concentrations and measured personal exposure and contribution of indoor NO2 concentration suggests that measuring indoor concentrations of NO2 in the home is sufficient to estimate personal exposure accurately.
도로변 상점 실내,외의 이산화질소 농도 및 거리에 따른 이산화질소 감소
권은경 ( Eun Kyung Kwon ),이현수 ( Hyun Soo Lee ),솨이지엔페이 ( Shuai Jianfei ),우병렬 ( Byung Lyul Woo ),양원호 ( Won Ho Yang ) 대구가톨릭대학교 자연과학연구소 2009 자연과학연구논문집 Vol.7 No.1
Workers who work at indoor and outdoor environmant near busy road are suspected to be exposed to high-elevated air pollutant levels during working hour. This study evaluated the working-time nitrogen dioxide (NO2) exposure for workers of store. In this study, we measured the indoor and outdoor NO2 concentrations of store. High NO2 exposure for workers of store was considered to be inflow of outdoor source of exhausted emission from vehicles and indoor source from usage of gas range. Indoor/Outdoor NO2 concentration ratio (0.99± 2.19) in store. According to NO2 concentrations by distance from roadside to store, NO2 concentrations showed the decreased trend with distance. The results of this study can be utilized by municipal authorities in urban planning for evaluating effects of future traffic planning and land use.
시간활동양상에 따른 주택의 시간대별 실내·실외 초미세먼지 농도비
박진현(Jinhyeon Park),김은채(Eunchae Kim),최영태(Youngtae Choe),류현수(Hyoensu Ryu),김순신(Sunshin Kim),우병렬(Byung Lyul Woo),조만수(Mansu Cho),양원호(Wonho Yang) 한국환경보건학회 2020 한국환경보건학회지 Vol.46 No.5
Objective: The purpose of this study was to evaluate the indoor to outdoor ratio (I/O ratio) of time activity patterns affecting PM2.5 concentrations in homes in Korea through a simulation. Methods: The time activity patterns of homemakers were analyzed based on the ‘Time-Use Survey’ data of the National Statistical Office in 2014. From September 30 to October 2, 2019, the experimenter lived in multi�family housing located in Guro-gu, Seoul. The I/O ratio of PM2.5 concentration was measured by installing sensor-based instruments. Results: The average indoor and outdoor PM2.5 concentrations during the three days were 33.1±48.9 and 45.9±25.3 μg/m3 , respectively. The average I/O ratio was 0.75±0.60. The indoor concentration tended to increase when PM2.5 source activity such cooking and cleaning was present and outdoor PM2.5 was supplied through ventilation. Conclusions: This study could be used as basic data for estimating indoor PM2.5 concentrations with personal activity pattern and weather conditions using outdoor concentrations.
Monte-Carlo 모의실험을 이용한 초·중·고등학교의환기부족 평가
최영태(Youngtae Choe),박진현(Jinhyeon Park),김은채(Eunchae Kim),류현수(Hyoensu Ryu) 김동준(Dong Jun Kim),민기홍(Kihong Min),정다영(Dayoung Jung),우병렬(Byung Lyul Woo),조만수(Mansu Cho),양원호(Wonho Yang) 한국환경보건학회 2020 한국환경보건학회지 Vol.46 No.6
Objectives: Indoor air quality has become more important aspeople spend most of their times indoors. Since students spend most of their times at home or at school, they are more likely to be exposed to indoor air pollutants. Ventilation in school classrooms can affect health and learning performance. In this study, ventilation deficiency was evaluated in school classrooms using Monte Carlo simulation. Methods: This study used sensor-based monitoring for six months to measure carbon dioxide (CO2) concentrations in classrooms in elementary, middle, and high schools. The volume of the classroom and the number of students were investigated, and the students’ body surface area was used to calculate the CO2 emission rate. The distribution of ventilation rates was estimated by measured CO2 concentration and a massbalance model using Monte Carlo simulation. Results: In the elementary, middle, and high schools, the average CO2 concentrations exceeded 1000 ppm, indicating that the ventilation rates were insufficient. The ventilation rates were deficient from July to August and in December, but showed relatively high ventilation rates in October. Forty-three percent of elementary schools, 56% of middle schools, and 62% of high schools showed insufficient ventilation rates. Conclusions: The ventilation rates calculated in elementary, middle and high schools were found to be quite insufficient. Therefore, proper management is needed to overcome the lack of ventilation and improve air quality.
신축 건물의 포름알데히드 노출에 의한 농도평가 및 재실자의 인식도조사
김동건 ( Dong Keon Kim ),이혜민 ( Hye Min Lee ),박제언 ( Jee On Park ),김민주 ( Min Joo Kim ),이선영 ( Sun Young Lee ),홍가연 ( Ga Yeon Hong ),우병렬 ( Byung Lyul Woo ),양원호 ( Won Ho Yang ) 대구가톨릭대학교 자연과학연구소 2011 자연과학연구논문집 Vol.9 No.1
This study progressed to survey formaldehyde (HCHO) concentration at using passive sample for 5 days and active sampler for 1 hr in new building. We selected places such as department office, lecture room, professor`s room, studio room, and hallway. The highest average concentration of HCHO was 544.13 ㎍/m3 at active sampler in studio room. Whereas lowest average concentration of formaldehyde was 4.91 ㎍/m3 at active sampler in hall way. Specially HCHO concentration of the studio room was more than 8 times on the indoor air quality standard, and concentration of the remaining places are above the standard. These results can be explained that indoor air quality of new building should be improved by installing the air cleaning device and ventilation system.