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박덕신,정우성,정병철 한국철도학회 2000 한국철도학회논문집 Vol.3 No.2
Modern people stay at indoor places about 90% of a day. Radon-222 is a gas produced by the radioactive decay of the element radium. And, radon is one of the major indoor air pollutants. Radon moves into the underground space through various routes and is considered to cause lung cancer by hurting the lung tissues. In this study, we measured the subway radon level at 9 stations of 3 lines. According to test results, we can figure out the concentration of radon by lines, times, and measuring points. So, it was found that ventilation conditions are the most important factors in the subway air quality. Finally, we suggested effective and economic management methods of air pollution in the subway.
Hybrid Pilot System을 이용한 철도 오염토양 복원
박덕신 한국철도학회 2000 한국철도학회논문집 Vol.3 No.3
In this study, we tested hybrid pilot system combined with soil vapor extraction and bioventing methods on the contaminated railroad soil. So, we found out the remediability and operating conditions. Air permeability(k) and gas phase(O$_2$/CO$_2$/VOCs) level trend are very important to determine the remediation rate of the contaminated sites. Throughout hybrid pilot test on different conditions, the range of air permeability(k) was 1985∼1194 darcy. The tests results in hybrid system was appropriate on this test sites, and the suitable injection air flow rate was 3.5㎥/hr. So, we suggested a basic data for the remediation and management of contaminated railroad soil.
박덕신,황인조,김동술 경희대학교 환경연구소 1998 環境硏究 論文集 Vol.8 No.-
Predictions by four atmospheric dispersion models such as TCM, ISCLT, Valley, and TEM were relatively compared in the Suwon City. Each dispersion model was seasonally modified with hourly TSP, SO_(2), NO_(2), and CO ground-level concentration data observed at two telemetered air monitoring sites operated by the Ministry of Environment. Prediction by each model was performed with the same input data prepared by intensive investigation of meteorological data as well as point, area, and line emission inventories in the target area. To present the paired comparison of each model, relative errors among four different models were calculated with reference statistics which were based on the predicted arithmetic means at a number of 48 different sites for each model. Since the main objective in this study was in the relative differences between models, it is impossible to quantitatively determine rank order for models. However, the results by four models show that the maximum relative errors in TSP, SO_(2), NO_(2), and CO concentration were 97.1%, 92.5%, 118.4%, and 49.7%, respectively.
박덕신,김동술,조영민,권순박,박은영 한국대기환경학회 2007 한국대기환경학회지 Vol.23 No.3
Nowadays, concerns have much more growing regarding indoor air quality (IAQ) on the public transportationincluding railway vehicles. Last year Korea Ministry of Environment(ME) set new guideline for public transporta-we monitored IAQ parameters(PM10, CO, CO2, VOCs, temperature and humidity) to investigate the present pollu-tion in passenger cabin. In general, the railway air quality was satisfactory. The PM10 and CO2 level on all passen-ger cabin were below the new guideline level 1 for PM10 (200g/m3) and CO2 (2,000 ppm). Clustering methodclusters and the origin of pollution is soil, diesel exhaust gas, abrasion of rail and plume.
지하철에서 입자상물질 처리기술의 경제성 분석에 관한 연구
박덕신,이용일,정원석,정우태,권순박,조영민,고상원 한국냄새환경학회 2016 실내환경 및 냄새 학회지 Vol.15 No.1
This paper is focused on an economic analysis of applied air pollutant control technologies used for the particulate matters present in subway. Beneficial effects such as reduction in medical expenses and prevention of productivity loss and death are achievable through the adaptation of control technologies. The result showed that the total investment expense was 97.6 billion won and the cost-benefit was 4776.8 billion won, therefore a 4.8 benefit/ cost ratio was attained.