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황경철(Kyung-chul Hwang),조기철(Ki-chul Cho),신은상(Eun-sang Shin) 대한환경위생공학회 2009 대한환경위생공학회지 Vol.24 No.4
In this study, Particulate carbon were determined from 1990 to 1995. The annual variation were investigated. The sampling was carried out using high volume air sampler. Average concentrations of EC and OC during the yellow sand event were 25.70㎍/㎥ and 13.91㎍/㎥, respectively, 22.10㎍/㎥ and 10.33㎍/㎥ during the non-yellow sand event. TC concentration of TSP were 10.7% during the yellow sand event and 20.6% during the non-yellow sand event. Average concentration rate of EC and OC of TC were 64.9% and 35.1%, respectively during the yellow sand event, 67.6% and 32.4% during the non-yellow sand event.
論文(논문) : 위험관리 개념에 근거한 항공보안업무 합리화 방안 연구
황경철 ( Kyung Chul Hwang ),유광의 ( Kwang Eui Yoo ) 한국항공운항학회 2012 한국항공운항학회지 Vol.20 No.2
The strengthened aviation security measurements caused by increased terror threat all around the world have air passengers annoyed by uneasy treatment and some delayed process. The service level of air travel and competitiveness of airlines industry has been weakened also. The aviation security process is mainly conducted at an airport. The threat level of airport is not usually same airport to airport, and the quality of aviation security activity is neither same. However, ICAO requires every international airport to conduct similar process to ensure aviation security without considering situational difference of each airport. The paper has objectives to develop reasonable security measurements based on risk management concept. It studied the ways of achieving target level of security of an airport, considering the threat situation of the airport and its ability to conduct security procedures.
수원시 운행 경유자동차 저공해화사업 효과 분석에 관한 연구
황경철(Kyung-Chul Hwang),조기철(Ki-Chul Cho) 한국환경관리학회 2011 環境管理學會誌 Vol.17 No.3
This study was carried out to investigate the low emission of air pollutants from diesel vehicle equipped with DPF, p-DPF and DOC attachment in Suwon city. The reduction quantity of particle matters(PM) by DPF, p-DPF and DOC attachment was 12.5ton/yr., 1.4ton/yr., and 0.03ton/yr. respectively. In the case of hydorgen carbon(HC), the reduction quantity was estimated 20.6ton/yr. by DPF attachment, 5.4ton/yr. by p-DPF attachment and 0.08ton/yr. by DOC attachment. In the case of CO, the reduction quantity was in the order of DPF(74.7ton/yr.) > p-DPF(15.7ton/yr.) > DOC(0.8ton/yr.). The observed results demonstrate that low emission from diesel vehicles can be achieved by appplying reduction systems such as DPF, p-DPF, and DOC, which of contributions to air quality were verified in terms of PM, HC, and CO.
황경철(Kyung-Chul Hwang),손준이(Jun-Yi Son),이진하(Jin-Ha Lee),최재구(Jae-Gu Choi),조기철(Ki-Chul Cho),신은상(Eun-Sang Shin) 대한환경위생공학회 2006 대한환경위생공학회지 Vol.21 No.2
??This research aims to improve the environmental education for elementary student's education program. That let environmental education be connected to other curriculum with a compunction enhancement plan to the internal volume side of environmental education. and grope for activation of compunction environmental education with curriculum necessary paradigm conversion of education for continuance possibility in green education. In case of legal and system, improving of legal and system by establishment of the environmental education act for system repair and source of revenue preparation of environmental education is needed. Based on importance of teaching-education and evaluation, it must be developed various teaching-education ways of environmental education in case of curriculum and an improvement of teaching-education ways and evaluation must be performed. After teaching-education about environmental education has been executed, a teaching-education improvement must be performed by evaluation.
오도석 ( Doe Seok Oh ),김성화 ( Sung Hwa Kim ),이슬 ( Seul Lee ),황경철 ( Kyung Chul Hwang ) 한국산업보건학회 2016 한국산업보건학회지 Vol.26 No.1
Objectives: The purpose of this study is to simplify and standardize analytical method of polar solvents(methanol, isopropanol, n-butanol, acetone, methylene chloride and MIBK) in the working environmental by GC. Because NIOSH methods are various and complicated. Methods: The method is using the same stationary phase(5% phenyl 95% dimethylpolysiloxane), absorbent(silica gel) and desorption solvent(DMSO) for above 6 solvents. For the 6 solvents desorption efficiency, calibration curve, and limit of detection were studied Results: As the results, 6 solvents{2 groups ; first group(methanol/isopropanol/butanol) and second group(acetone/methylene chloride/MIBK)} could be separated and quantified within 10 minutes. Desorption efficiency from silica gell of 6 solvents using dimethylsulfoxide(DMSO) was methanol 86.2%, isopropanol 103.2%, n-butanol 101.8%, acetone 98.2%, methylene chloride 103.9% and MIBK 106.2% in the range of 0.2, 0.5, 2.0 times of TWA, consequently, satisfied NIOSH estimation level(beyond 75%). Correlation coefficient(r)in the range of 0.2~2.0 times of TWA, was above 0.999 for 6 solvent . LOD(mg/DMSO ml) using calibration curve in the range of 0.2~2 times of TWA was methanol 0.11, isopropyl alcohol 0.20, n-butanol 0.03, acetone 0.50, methylene chloride 0.05, MIBK 0.04 respectably. Conclusions: This method can be used at the sampling and analytical method for polar solvents by GC. Also, will be able to be applied with NIOSH methods.
서석준(Seok-Joon Seo),김소영(So-Young Kim),이민도(Mim-Do Lee),김수연(Su-Yeon Kim),김영환(Young-Hwan Kim),임용재(Yong-Jae Lim),최진수(Jin-Soo Choi),황경철(Kyung-Chul Hwang) 한국환경관리학회 2010 環境管理學會誌 Vol.16 No.1
본 연구는 대단위 공업 및 산업단지가 조성된 광양만 지역을 중심으로 한 남해안 지역에서 빈번히 발생하는 고농도 O₃ 현상에 대한 정확한 원인 규명을 통한 효과적인 대책 마련을 하고자 실시하였다. 구체적으로 항공기를 이용하여 광양만 지역을 중심으로 한 남해안 지역에서 지속 상승하고 있는 고농도 O₃ 현상의 원인을 규명하기 위한 상층의 O₃ 및 O₃ 전구물질 공간분포를 도출하는데 그 목적이 있다. 그 결과 항공관측 중 상층의 O₃, NOy, CO, TVOCs 일평균 농도를 보면 O₃ 평균 농도는 32.3~90.8 ppb의 분포를 보였으며 2009년 6월 1일에 최대 132 ppb의 고농도를 나타내었다. 관측기간 전체 오존 평균 농도는 60.5 ppb로 이 기간 동안 우리나라 O3의 배경대기 평균농도 43 ppb(2009, 국립환경과학원 대기환경연보(2008))와 수도권 지역(서울, 인천, 경기)의 평균농도 30 ppb보다도 높은 수준으로 나타나 이를 바탕으로 한 원인분석을 파악하기 위한 심도있는 연구의 필요성을 제시하였다. Gwangyang Bay is a region with a large scale of industrial complexes, in which high ozone concentration occurs frequently due to its industrial and coastal characteristics. It is suggested that effective measures be established on the issue by identifying the causes of high ozone concentration. This study intends to understand sources of high ozone concentration in the south coastal region of Korea by evaluating ozone spatial distribution in the upper air using aircraft, to obtain the preliminary data of the spatial distribution in the region. The daily concentration of O3 in the upper air shows that the mean O₃ concentration ranged between 32 ~ 91ppb, with a maximum of 132ppb.
항공관측 및 대기질 모델링을 활용한 장거리 이동물질 영향 연구
이성우(Sung-Woo Lee),최민혁(Min-Hyeok Choi),최진수(Jin-Su Choi),손정석(Jung-Suk Son),김성용(Sung-Yong Kim),장임석(Lim-Seok Chang),이성우(Sung-Woo Lee),김종춘(Jong-Chun Kim),반수진(Soo-Jin Ban),장성기(Seong-Ki Jang),황경철(Kyung-Chul 한국환경관리학회 2011 環境管理學會誌 Vol.17 No.3
This study was conducted as the Long-range Transboundary Air Pollutants (LTP) Project among Korea, Japan and China. The research aims to understand atmospheric environment in Northeast Asia as well as determine causes of air pollution in the region. It ultimately wants to provide scientific data for establishing air pollution reduction measures. To this end, several activities were performed including aircraft measurement, upper and synoptic atmosphere analysis, and modeling analysis. Aircraft measurement was carried out in 2010 during two intensive measurement periods in vertical and zonal paths. The first measurement period was between May 15~25 for 7 times, and the second one was November 15~22 for 8 times. The highest pollutants concentration was observed in 20 May 2010. On this day, the mean concentration of SO₂ was 5.56 ppb, CO was 0.23 ppm, O3 was 9.47ppb, NOx was 4.01 ppb, PAN was 1.37 ppb, and particle number was 194.968 N/㎤, higher than the other measurement days. The modeling result during the aircraft measurement was quite reliable as it was performed based on the 2006 INTEX-B emission data. In addition, high concentration events and tracts of air pollutant movement were well simulated in the model. But the modeling result also requires some further improvement as it tends to underestimate their absolute values.