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        • KCI등재

          CMAQ-pollen 모델을 이용한 참나무 꽃가루 확산 고해상도 수치모의 및 검증

          오인보(Inbo Oh), 김규랑(Kyu Rang Kim), 방진희(Jin-Hee Bang), 임윤규(Yun-Kyu Lim), 조창범(Changbum Cho), 오재원(Jae-Won Oh), 김양호(Yangho Kim), 황미경(Mi-Kyoung Hwang) 한국대기환경학회 2017 한국대기환경학회지 Vol.33 No.1

          The aim of this study is to evaluate the accuracy and variability of the oak pollen concentrations over the Seoul metropolitan region (SMR) simulated by the Community Multiscale Air Quality (CMAQ)-based pollen dispersion model, which is the CMAQ-pollen model integrated with the improved oak pollen emission model (PEM-oak). The PEM-oak model developed is based on hourly emission flux parameterization that includes the effects of plantspecific release, meteorological adjustment, and diurnal variations of oak pollen concentrations. A 33 day-run for oak pollen simulation was conducted by the CMAQ-pollen model with a 3 ㎞ spatial resolution for the SMR during the 2014 spring pollen season. Modeled concentrations were evaluated against the hourly measurements at three Burkard sampling sites. Temporal variations of oak concentrations were largely well represented by the model, but the quantitative difference between simulations and measurements was found to be significant in some periods. The model results also showed that large variations in oak pollen concentrations existed in time and space and high concentrations in the SMR were closely associated with the regional transport under strong wind condition. This study showed the effective application of the CMAQ-pollen modeling system to simulate oak pollen concentration in the SMR. Our results could be helpful in providing information on allergenic pollen exposure. Further efforts are needed to further understand the oak pollen release characteristics such as interannual variation of the oak pollen productivity and its spatio-temporal flowering timing.

        • KCI등재

          울산지역의 기상 특성: 기온과 바람을 중심으로

          오인보(Inbo Oh), 방진희(Jin-Hee Bang), 김양호(Yangho Kim) 한국대기환경학회 2015 한국대기환경학회지 Vol.31 No.2

          Spatial-temporal meteorological features of the Ulsan metropolitan region (UMR) were analyzed using observations and high-resolution numerical modeling. Long-term trend analysis (1970~2013) showed a significant increase of 0.033° Cyr<SUP>-1</SUP> in the 5-year moving average temperature, although detailed short-term features varied, whereas wind speed and relative humidity over the same period displayed clear decreases of -0.007 ms<SUP>-1</SUP> and -0.29%yr<SUP>-1</SUP>, respectively. These trends indicate the effects of regional climate change and urbanization in the UMR. Seasonal variations averaged for the most recent three years, 2011~2013, showed that temperatures in three different regions (urban/industrial, suburban, coastal areas) of the UMR had similar seasonality, but significant differences among them were observed for a certain season. Urban and industrial complex regions were characterized by relatively higher temperatures with large differences (max.: 3.6℃) from that in the coastal area in summer. For wind speed, strong values in the range from 3.3 to 3.9 ms<SUP>-1</SUP> occurred in the coastal areas, with large differences clearly shown between the three regions in September and October. Diurnal variations of temperature were characterized by pronounced differences during the daytime (in summer) or nighttime (in winter) between the three regions. Results from the WRF modeling performed for four months of 2012 showed large variations in gridaverage temperature and winds in the UMR, which displayed significant changes by season. Especially, a clear temperature rise in the urban center was identified in July (0.6℃ higher than nearby urban areas), and overall, relatively weak winds were simulated over urban and inland suburban regions in all seasons.

        • KCI등재

          울산지역 대기오염 공간분포

          오인보(Inbo Oh), 방진희(Jin-Hee Bang), 김순태(Soontae Kim), 김은혜(Eunhye Kim), 황미경(Mi-Kyoung Hwang), 김양호(Yangho Kim) 한국대기환경학회 2016 한국대기환경학회지 Vol.32 No.4

          The spatial air pollution distribution of the Ulsan metropolitan region (UMR) was analyzed using monitoring data and high-resolution numerical simulations. A three-year (2011~2014) analysis for the average concentrations from the 13 air quality monitoring sites in the UMR showed that SO₂ and PM10 levels in industrial regions were much higher than those in other regions, whereas spatial differences of NO₂ and CO concentrations were not significant. In particular, elevated O₃ concentrations were clearly found at urban sites near petrochemical complex area. Results from high-resolution simulations by CMAQ model performed for four months of 2012 showed large spatial variations in grid-average pollutant concentrations between industrial areas and other areas in the UMR, which displayed significant changes with wind pattern by season. It was noted that the increases of SO₂ and PM10 levels were limited in costal industrial areas or over the area nearby the sea in all seasons. Modeled O₃ concentrations were quite low in industrial areas and main urban roads with large NOx emissions. However, the model presented that all pollutant concentrations were significantly increased in the urban residential areas near the industrial complexes in summer season with increase of southerly wind.

        • KCI우수등재

          울산지역 초등학교 학생에서 대기중 꽃가루 비산 수준과 흡입 알레르겐 감작률과의 관련성

          오연서(Yeonsuh Oh), 최승원(Seung Won Choi), 오인보(Inbo Oh), 이지호(Jiho Lee), 심창선(Chang Sun Sim), 방진희(Jin-Hee Bang), 김양호(Yangho Kim) 한국환경보건학회 2020 한국환경보건학회지 Vol.46 No.6

          '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

          Objectives: The aim of this study was to investigate airborne pollen counts, inhalant allergen sensitization rate, and allergic disease prevalence among elementary school children in Ulsan, South Korea during 2012-2018. Methods: Burkard samplers for pollen were installed on rooftops in suburban and urban areas in Ulsan. A 24- hour sampling of airborne allergens was conducted six days/week from January 1, 2013 to November 31, 2018. Skin prick tests were done with a total of 4,246 primary school students residing in urban and suburban areas in 2012, 2014, 2016, and 2018. This study examined sensitization to 20 major inhalant allergens. Results: The highest monthly counts of airborne pollen were observed in April and September each year. Among the pollen identified over the six years, pine showed the highest pollen counts (44.3%), followed by oak (22.3%), alder (6.3%) and Japanese hops (4.3%). Tree pollen predominated from March to June, and weed pollen predominated from August to October. Higher sensitization rates for inhalant allergens were observed in Dermatophagoides farinae (42.4%), Dermatophagoides pteronyssinus (43.6%), cat fur (12.1%), birch (9.9%), oak (9.6%), and alder (8.7%). The inhalant allergen sensitization rate was highest in the group with comorbidity (asthma and/or rhinitis and atopic dermatitis), and respiratory allergic disease (asthma and/or rhinitis) was higher than that of atopic dermatitis. Conclusion: Both the counts of tree pollen in the air and the sensitization rate for tree pollen were high in Ulsan. The temporal change in respiratory allergic diseases was similar to that for the sensitization rate of tree pollen, such as oak. In the future, it is considered that additional continuous research on various inhalant allergens and pollen should be conducted.

        • KCI등재

          울산지역 초등학생의 알레르기비염 유병과 면역반응과의 상관성: 환자-대조군 연구

          이지호,오인보,김아라,김민호,심창선,김양호,Lee,,Jiho,Oh,,Inbo,Kim,,Ahra,Kim,,Minho,Sim,,Chang,sun,Kim,,Yangho 한국환경보건학회 2015 한국환경보건학회지 Vol.41 No.4

          '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

          Objectives: This study aims to investigate the correlations between the prevalence of allergic rhinitis (AR) and cytokines among elementary school children in an industrial city, Ulsan, South Korea, and to identify major environmental risk factors associated with AR prevalence. Methods: We conducted a case-control study in June 2009 and February 2010 in order to evaluate the relationship between AR and related cytokines. Data on physician-treated prevalence over the past 12 months and potential risk factors for AR were compiled through a questionnaire from a survey of 339 schoolchildren living in different urban environments. Logistic regression analysis was carried out with propensity score matched data (n=180) to assess the influences of cytokines (IL-13, IL-33, IL-4 and IL-5) on AR prevalence and to determine which environmental factors affected AR. Results: In univariate analysis, the AR prevalence was influenced by family history of AR (mother and siblings), environmental factors (odor condition and irritated symptoms of air pollution), and indoor allergens (D. farinae and D. pteronyssinus). The t-test demonstrated that eosinophils, Immunoglobulin E (IgE), and interleukins (IL-13 and IL-5) were statistically significantly different according to treatment of allergic rhinitis over the preceeding 12 months. The results of the multiple logistic regression analysis showed that a statistically significant association between several factors (such as irritated symptoms of air pollution (OR 4.075, CI 1.735-9.568), IL-13 (OR 0.825, CI 0.734-0.928), odor condition (OR 2.409, CI 0.908-6.389), and AR history of siblings (OR 2.217, CI 0.999-4.921)) and the prevalence of AR was found after adjusting for confounders. Conclusion: These results suggest that AR prevalence is significantly associated with cytokine level, genetic background, and outdoor environmental factors. Although living in a polluted area and genetic background can contribute to an increased risk of childhood AR, cytokine level should be considered as an important factor in the treatment of AR in the last 12 months.

        • KCI등재

          인구특성을 고려한 노출평가: 부산지역 고농도 오존일 사례연구

          황미경,방진희,오인보,김유근,Hwang,,Mi-Kyoung,Bang,,Jin-Hee,Oh,,Inbo,Kim,,Yoo-Keun 한국환경보건학회 2015 한국환경보건학회지 Vol.41 No.2

          '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

          Objectives: Photochemical ozone pollution is associated with increased mortality risk. This study aims to assess the population exposure to ozone according to population characteristics for high ozone days in the Busan metropolitan region (BMR). Methods: The ozone exposure assessment in this study was performed using the WRF-CMAQ simulated ozone concentrations and the population data in the BMR. The settled and daytime population and their activity were considered to conduct the static and dynamic ozone exposure assessment. Results: Applying a static exposure assessment, in case that high ozone occurred throughout Busan area, the highest exposure levels were evaluated in urban neighborhoods. In case of ozone pollution in outer Busan, because sensitive groups have been relatively higher exposure, this case was also evaluated as part of that should not be overlooked. The dynamic exposure was higher than static exposure because the number of population exposed to ozone of high concentration is increased. This approach is important in a regard consider that daytime population distribution when high ozone occur. Conclusion: This study shows the different population exposure according to various ozone distributions for each episode day. Considering demographic characteristic such as population density and activity should be important to understanding the population exposure assessment when ozone pollution occurs.

        • KCI우수등재

          주요 대도시 알레르기 질환 유병률 변화와 대기오염과의 관련성 - 지역 용도를 고려한 19세 이하 주민 대상

          이지호(Jiho Lee), 오인보(Inbo Oh), 김민호(Min-ho Kim), 방진희(Jin Hee Bang), 박상진(Sang Jin Park), 윤석현(Seok Hyeon Yun), 김양호(Yangho Kim) 한국환경보건학회 2017 한국환경보건학회지 Vol.43 No.6

          '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

          Objectives: The association of air pollution levels and land-use types with changes in the prevalence of allergic diseases (allergic conjunctivitis, allergic rhinitis, asthma, and atopic dermatitis) was investigated for seven metropolitan cities in Korea Methods: Data on daily hospital visits and admissions (of those under 19 years old) for 2003-2012 were obtained from the National Health Insurance Cooperation. Meteorological data on daily mean temperature, humidity, and air pressure were obtained from the Korea Meteorological Administration. Daily mean or maximum concentration data for five pollutants (PM 10 , O 3 , NO 2 , SO 2 , and CO) as measured at air quality monitoring sites operated by the Ministry of Environment were used. We estimated excess risk and 95% confidence intervals for the increasing interquatile range (IQR) of each air pollutant using Generalized Additive Models (GAM) appropriate for time series analysis. Results: In this study, we observed a significant association between the IQR increases of air pollutants and the prevalence risk of allergic diseases (allergic conjunctivitis, allergic rhinitis, asthma, and atopic dermatitis) in all metropolitan cities after adjusting for temperature, humidity, and air pressure at sea level. Among the air pollutants, NO 2 and PM 10 were associated with the prevalence of asthma, and O 3 was associated with only allergic conjunctivitis in regression analysis. However, in GAM analysis considering land-use, O 3 and SO 2 were associated with allergic conjunctivitis, PM10, O3, NO2, and CO were associated with allergic rhinitis, and PM 10 , O 3 and NO 2 were associated with asthma in industrial area. Conclusion: This study found a significant association between air pollution and the prevalence of allergic related diseases in industrial areas. More detailed research considering mixed traffic-related air pollution (TRAP) and conducting meta-analyses combining data of the all cities is required.

        • SCOPUSKCI등재
        • KCI등재

          학술논문 분석을 통한 기상민감질환 선정 및 기상인자와의 관련성 고찰

          안혜연 ( Hye Yeon An ), 정주희 ( Ju Hee Jeong ), 김태희 ( Taehee Kim ), 윤진아 ( Jinah Yun ), 김현수 ( Hyunsu Kim ), 오인보 ( Inbo Oh ), 이지호 ( Jiho Lee ), 원경미 ( Kyung Mi Won ), 이영미 ( Young Mi Lee ), 김유근 ( Yoo Keun Kim ) 한국환경과학회 2016 한국환경과학회지 Vol.25 No.6

          The effect of weather on disease was investigated based on results reported in academic papers. Weather-sensitive disease was selected by analyzing the frequency distributions of diseases and correlations between diseases and meteorological factors (e.g., temperature, humidity, pressure, and wind speed). Correlations between disease and meteorological factors were most frequently reported for myocardial infarction (MI) (28%) followed by chronic ischemic heart disease (CHR) (12%), stroke (STR) (10%), and angina pectoris (ANG) (5%). These four diseases had significant correlations with temperature (meaningful correlation for MI and negative correlations for CHR, STR, and ANG). Selecting MI, as a representative weather-sensitive disease, and summarizing the quantitative correlations with meteorological factors revealed that, daily hospital admissions for MI increased approximately 1.7%-2.2% with each 1℃ decrease in physiologically equivalent temperature. On the days when MI occurred in three or more patients larger daily temperature ranges (2.3℃ increase) were reported compared with the days when MI occurred in fewer than three patients. In addition, variations in pressure (10 mbar, 1016 mbar standard) and relative humidity (10%) contributed to an 11%-12% increase in deaths from MI and an approximately 10% increase in the incidence of MI, respectively.

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