울산지역 대기오염과 알레르기 비염 유병률과의 관계

오인보,이지호,심창선,김양호,유철인,Oh, In-Bo,Lee, Ji-Ho,Sim, Chang-Sun,Kim, Yang-Ho,Yoo, Cheol-In 한국환경보건학회 2010 한국환경보건학회지 Vol.36 No.6

This study aims to investigate the relationship between air pollution exposure and the prevalence of allergic rhinitis in a young population in the Ulsan metropolitan region (UMR). Data on physician-diagnosed allergic rhinitis (past 12 months) in 1,449 infants and children aged 1-18 years who lived within 1.5 or 2 km of air quality monitoring sites were collected in a cross-sectional health interview survey conducted between January-February 2006 in the UMR. Comparisons of the spatial distribution of the prevalence rates for allergic rhinitis and annual average pollutant concentrations over the region showed that a relatively high prevalence rate occurred around the coastal industrial area, with high PM10 concentrations. A linear correlation analysis demonstrated a positive correlation relationship between them (R = 0.680, p = 0.04). Multiple linear regression analysis revealed that the combined effect of the PM10 and $SO_2$ variables accounts for approximately 81% of the variance (R-square: 0.81) in the prevalence rate. From the multiple logistic regression analysis after adjustment by age, sex, and air-pollutant factors, the PM10 and $SO_2$ which were mainly from industrialrelated emissions were found to be significantly associated with an increased risk of allergic rhinitis (aOR: 1.76, 95% CI: 1.15-2.70 for PM10 ; aOR: 1.63, 95% CI: 1.12-2.35 for SO2).

울산지역 초등학생 알레르기 질환 유병률: 지역적 차이와 환경위험인자

오인보,김양호,심창선,이지호,Oh, In-Bo,Kim, Yangho,Sim, Chang Sun,Lee, Ji Ho 한국환경보건학회 2012 한국환경보건학회지 Vol.38 No.6

Objectives: This study aims to investigate the AD (allergic diseases: asthma, allergic rhinitis and atopic dermatitis) prevalence among elementary schoolchildren in an industrial city, Ulsan, and identify major environmental risk factors associated with AD prevalence. Methods: Data on the physician-diagnosed prevalence over the past 12 months and potential risk factors of AD were collected through a questionnaire from a 2009-2010 survey of 4,067 schoolchildren living in different urban environments. The logistic regression analysis was performed to assess differences in AD prevalence among the areas and to determine which environmental factors impacted AD. Results: Our survey results showed that the AD prevalence rate ranged between 26.2% and 35.9%. Children living in polluted areas (near industrial and central urban areas) had about a 10% higher prevalence of AD than did those living in coastal or suburban residences. The Chi-Square test demonstrated that this local difference was statistically significant before and after adjustment of major confounders such as parental AD history and parental education. The results of the logistic regression analysis showed a statistically significant association between several environmental factors (ventilation in winter, odor conditions and exposure to traffic smoke, and outdoor $PM_{10}/O_3$ pollution) and the prevalence of AD found by multivariate model after adjusting confounders. Conclusion: These results suggest that local differences in AD prevalence are significantly associated with outdoor environmental factors. Although there are likely to be other risk factors for AD, living in a polluted area and exposure to high levels of air pollutants can contribute to an increased risk of childhood AD.

연구논문 : CMAQ 모델의 화학메커니즘(SAPRC99, CB05) 적용에 따른 수도권 오존농도 모의결과 비교

강윤희 ( Yoon Hee Kang ),오인보 ( In Bo Oh1 ),정주희 ( Ju Hee Jeong ),방진희 ( Jin Hee Bang ),김유근 ( Yoo Keun Kim ),김순태 ( Soon Tae Kim ),김은혜 ( Eun Hye Kim ),홍지형 ( Ji Hyung Hong ),이대균 ( Dae Gyun Lee ) 한국환경과학회 2016 한국환경과학회지 Vol.25 No.1

A comparison of ozone simulations in the seoul metropolitan region (SMR) using the community multiscale air quality (CMAQ) model with SAPRC99 and CB05 chemical mechanisms (i.e. EXP-SP99 and EXP-CB05) has been conducted during four seasons of 2012. The model results showed that the differences in average ozone concentrations between the EXP-SP99 and EXP-CB05 were found to be large in summer, but very small in the other seasons. This can be attributed that the SAPRC99 tends to produce more ozone than the CB05 in urban area like the SMR with low VOC/NOx ratio under high ozone conditions. Through quantitative comparison between two mechanisms for the summer, it was found that the average ozone concentrations from the EXP-SP99 were about 3 ppb higher than those from the EXP-CB05 and agreed well with the observations. Horizontal differences in ozone concentrations between SAPRC99 and CB05 showed that significant differences were found in southern part of the SMR and over the sea near the coast in summer.

아토피피부염과 혈청 비타민 D의 상관관계에 대한 연구

정하나 ( Ha Na Jung ),이현진 ( Hyun Jin Lee ),오인보 ( In Bo Oh ),이지호 ( Ji Ho Lee ),최유성 ( Yu Sung Choi ),서호석 ( Ho Seok Suh ) 대한피부과학회 2016 대한피부과학회지 Vol.54 No.2

Background: Vitamin D is known to play roles in immunity through the stimulation of Toll-like receptors, regulating pro-inflammatory cytokine production, and increasing antimicrobial peptide production. Recent studies have revealed the role of vitamin D deficiency in the immunopathogenesis of atopic dermatitis (AD). Objective: We aimed to assess the correlation between vitamin D concentrations and the severity of AD and also elucidate the relationship between the amount of sunlight exposure and serum 25-Hydroxy vitamin (25(OH)D) levels using the sunlight exposure questionnaire. Methods: Sixty-one Korean patients with AD and 120 healthy control patients were enrolled. We evaluated the disease severity using the SCORAD index and measured the serum levels of 25(OH)D, and total IgE levels and eosinophil counts. All patients completed a one-week recall sunlight exposure questionnaire. Results: There was no significant difference in the 25(OH)D levels between the two groups. Eosinophil counts (p <0.001) were significantly higher in patients with AD than in control patients. A significant inverse correlation (r=-0.309, p=0.015) was found between the SCORAD score and 25(OH)D levels. A significant positive correlation (r=0.236, p=0.001) was found between the weekly sunlight exposure score and the serum levels of 25(OH)D. Conclusion: Our study suggests that vitamin D deficiency is related to the severity of AD and the serum 25(OH)D concentration is positively correlated with the sunlight exposure score. (Korean J Dermatol 2016;54(2):105∼111)

도시지역 공중화분 농도와 기상조건과의 관계

오인보(In-Bo Oh),김양호(Yangho Kim),최기룡(Kee-Ryong Choi),이지호(Ji Ho Lee) 한국대기환경학회 2013 한국대기환경학회지 Vol.29 No.6

MM5-CAMx를 이용한 대기오염물질의 재순환현상 모델링

김유근(Yoo-Keun Kim),오인보(In-Bo Oh),강윤희(Yoon-Hee Kang),황미경(Mi-Kyoung Hwang) 한국대기환경학회 2007 한국대기환경학회지 Vol.23 No.3

아토피 아동 가정내 집먼지 진드기 농도와 환경요인: 환자 대조군 연구

김성호,박동진,변혜정,이현수,오인보,심창선,김양호,윤충식,Kim, Sung-Ho,Park, Dong-Jin,Byun, Hyae-Jeong,Lee, Hyun-Soo,Oh, In-Bo,Sim, Chang-Sun,Kim, Yang-Ho,Yoon, Chung-Sik 한국환경보건학회 2012 한국환경보건학회지 Vol.38 No.3

Objectives: The purpose of this study was to determine house dust mite concentrations in living rooms and bedding materials in atopic case-control groups. Methods: Fifty four homes with children suffering atopic diseases as cases and fifty one homes without atopic diseases as controls were selected after diagnosis at three elementary schools in Ulsan City. Dust samples were collected from the living rooms and bedding materials in each home during summer and winter with a vacuum cleaner and analyzed for house dust mites using enzyme-linked immunosorbent assay (ELISA). Environmental factors and family history were surveyed during sampling. Results: Both species of house dust mite Dermatophagoides farina (Der f 1) and Dermatophagoides pteronyssinus (Der p 1) were found in all homes. Derf1 concentrations were much higher than Der P1 concentrations, both in atopic homes (1518.9 vs. 27.0 ng/g. dust, respectively) and non-atopic homes (810.8 vs. 44.3 ng/g. dust, respectively). Der f 1 concentrations were significantly higher in the atopic group than in the non-atopic group (atopic: 1518.9 ng/g.dust, non-atopic: 810.8 ng/g.dust, p = 0.035). However, total house dust mite Der p 1 concentrations were significantly higher in the non-atopic group than in the atopic group (atopic: 27.0 ng/g.dust, non-atopic: 44.3 ng/g.dust, p = 0.035). Multiple regression implied that mothers with family history of atopic diseases (OR = 4.79, 95% CI = 1.81-12.69), Der f 1 concentrations (OR = 1.74, 95% CI = 1.07-2.81), and air freshener use (OR = 4.60, 95% CI = 1.72-12.34) had significant associations with atopic children. Conclusion: House dust mite Der f 1 concentrations were associated with atopic children. This study suggests that parents should reduce house dust mite Der f 1 concentrations through environmental controls.

군집분석과 상세기상모델을 통한 포항지역 계절별 바람장 특성

정주희 ( Ju Hee Jeong ),오인보 ( In Bo Oh ),고대권 ( Dae Kwun Ko ),김유근 ( Yoo Keun Kim ) 한국환경과학회 2011 한국환경과학회지 Vol.20 No.6

The typical characteristics of seasonal winds were studied around the Pohang using two-stage (average linkage then k-means) clustering technique based on u- and v-component wind at 850 hpa from 2004 to 2006 (obtained the Pohang station) and a high-resolution (0.5 km grid for the finest domain) WRF-UCM model along with an up-to-date detailed land use data during the most predominant pattern in each season. The clustering analysis identified statistically distinct wind patterns (7, 4, 5, and 3 clusters) representing each spring, summer, fall, and winter. During the spring, the prevailed pattern (80 days) showed weak upper northwesterly flow and late sea-breeze. Especially at night, land-breeze developed along the shoreline was converged around Yeongil Bay. The representative pattern (92 days) in summer was weak upper southerly flow and intensified sea-breeze combined with sea surface wind. In addition, convergence zone between the large scale background flow and well-developed land-breeze was transported around inland (industrial and residential areas). The predominant wind distribution (94 days) in fall was similar to that of spring showing weak upper-level flow and distinct sea-land breeze circulation. On the other hand, the wind pattern (117 days) of high frequency in winter showed upper northwesterly and surface westerly flows, which was no change in daily wind direction.

2009년 7월 22일 부분일식 발생 시 부산지역 기온과 오존농도의 변화 특성

전병일 ( Byung Il Jeon ),오인보 ( In Bo Oh ) 한국환경과학회 2011 한국환경과학회지 Vol.20 No.8

This paper examines the effects of the partial solar eclipse of 22 July 2009 across the Korean peninsular on surface temperature and ozone concentrations in over the Busan metropolitan region (BMR). The observed data in the BMR demonstrated that the solar eclipse phenomenon clearly affects the surface ozone concentration as well as the air temperature. The decrease in temperature ranging from 1.2 to 5.4℃ was observed at 11 meteorological sites during the eclipse as a consequence of the solar radiation decrease. A large temperature drop exceeding 4℃ was observed at most area (8 sites) of the BMR. Significant ozone drop (18∼29 ppb) was also observed during the eclipse mainly due to the decreased efficiency of the photochemical ozone formation. The ozone concentration started to decrease at approximately 1 to 2 hours after the event and reached its minimum value for a half hour to 2 hours after maximum eclipse. The rate of ozone fall ranged between 0.18 and 0.49 ppb/min. The comparison between ozone measurements and the expected values derived from the fitted curve analysis showed that the maximum drop in ozone concentrations occurred at noon or 1 PM and was pronounced at industrial areas.

연안 대도시 해풍 풍하측 계곡지역의 지표오존 분포 특성: 계절변화와 바람과의 관계

강재은 ( Jae Eun Kang ),오인보 ( In Bo Oh ),송상근 ( Sang Keun Song ),김유근 ( Yoo Keun Kim ) 한국환경과학회 2012 한국환경과학회지 Vol.21 No.2

The seasonal variations of ozone (O3) concentrations were investigated with regard to the relationship between O3 and wind distributions at two different sites (Jung Ang (JA): a semi-closed topography and Seo Chang (SC): a closed topography) within a valley city (Yangsan) and their comparison between these sites (JA and SC) and two non-valley sites (Dae Jeo (DJ) and Sang Nam (SN)) located downwind from coastal cities (Busan and Ulsan). This analysis was performed using the data sets of hourly O3 concentrations, meteorological factors (especially, wind speed and direction), and those on high O3 days exceeding the 8-h standard (60 ppb) during 2008-2009. In summer and fall (especially in June and October), the monthly mean values of the daily maximum O3 concentrations and the number of high O3 days at JA (and SC) were relatively higher than those at DJ (and SN). The increase in daytime O3 concentrations at JA in June was likely to be primarily impacted by the transport of O3 and its precursors from the coastal emission sources in Busan along the dominant southwesterly winds (about 5 m/s) under the penetration of sea breeze condition, compared to other months and sites. Such a phenomenon at SC in October was likely to be mainly caused by the accumulation of O3 and its precursors due to the relatively weak winds under the localized stagnant weather condition rather than the contribution of regional transport from the emission sources in Busan and Ulsan.