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산업단지 및 일반생활 지역의 공기 중 톨루엔에 대한 개인노출 및 생체시료의 상관성 분석
이병준(Byoungjun Lee),허 정(Jung Heo),정다영(Dayoung Jung),김순신(Sunshin Kim),류현수(Hyeon-Su Ryu),최민지(Min-Ji Choi),솨이지엔페이(Jian-Fei Shuai),임성국(Sung-Guk Im),양원호(Wonho Yang) 한국환경보건학회 2017 한국환경보건학회지 Vol.43 No.4
Objectives: The purpose of this study was to assess the correlation relationship between personal exposure and urinary hippuric acid in biological monitoring for airborne toluene in an industrial complex and in general environments. Methods: Personal exposure to toluene and its metabolite, hippuric acid, in urine were simultaneously measured in occupational environments area near an industrial complex and in general environments. The study subjects were divided into three types: 137 workers who use organic solvents in the workplace, 210 residents living near a dyeing industrial complex, and 379 residents living in general environments. The toluene exposures of workers and residents were measured by a passive sampler for four days. The urine of participants was sampled when the passive samplers of personal exposure were collected. Results: The toluene and hippuric acid concentrations of workers were the highest, followed by the concentrations of residents living near a dyeing industrial complex and residents living in general environments. The coefficient of correlation between the concentrations of toluene and hippuric acid among workers was 0.749 (p<0.01) in the workplace. On the contrary, correlations between the concentrations of toluene and hippuric acid among residents living near a dyeing industrial complex and residents living in general environments were all not significant. The relationship between the concentrations of hippuric acid and toluene in three types could be described by the exponential growth model. Conclusions: This study analyzed the relationships between toluene exposure and the concentrations of hippuric acid in urine in high, middle, and low exposure environments, and could be described by the exponential growth model.
Physiological damage of soybean [Glycine max (L)] by acid rain
Su-Hyeon Im,Min-Won Park,Shin-Wook Kang,Do-Soon Kim 한국작물학회 2008 한국작물학회 학술발표대회 논문집 Vol.2008 No.10
Acid rain due to air pollution has been believed to be harmful to vegetation and crops, either by direct deposition on the foliage or by indirect leaching of nutrients from the soil. This study was conducted to investigate physiological response and damage of soybean caused by acid rain in the glasshouse at the experimental station of Seoul National University. Soybean (Glycine max L.) cv. Sinpaldal was subjected to simulated acid rain (SAR) two times a week from R2 stage until its maturity. The pH values of SAR treatments were ranged from 2 to 5 together with tap water treatment (pH 7±0.2) as a control. The SAR was composed of H2SO4 and HNO3 at the ratio of 2:1 (v/v). SAR treatment at pH 2 caused clear visual damage on leaves and pods with severe chlorosis and necrosis even after the first SAR was applied, while those at pH greater than 3 showed no clear visual damage. Chlorophyll content (expressed as SPAD value) tended to decrease with decreasing pH with significant reduction at pH 2 as compared with pH values greater than 3. Photosynthesis also showed decrease with decreasing pH with significant reduction at pH 3 and 2. Soybean yield and its components were also affected by SAR treatment, particularly significant at pH 2.
Su-Hyeon Im(임수현),Min-Won Park(박민원),Min-Jeong Yook(육민정),Do-Soon Kim(김도순) 韓國雜草學會 2009 Weed&Turfgrass Science Vol.29 No.2
2007년도 충청남도 서산 현대간척지의 6개 논 포장에서 수집한 물피의 ACCase 저해제인 cyhalofop-butyl에 대한 저항성 여부를 평가하기 위하여 본 연구를 수행하였다. 6개 수집종들의 cyhalofop-butyl에 대한 약량반응 실험을 통해 얻어진 GR50값을 감수성의 값과 비교하여 얻어진 저항성 지수인 R/S 비율을 검토한 결과 3개의 수집종에서 R/S 비율이 30 이상으로 평가되어 cyhalofop-butyl에 저항성이 있음이 확인되었다. 특히 서산-5로 명명된 수집종의 경우 R/S 비율이 96.9로 저항성이 매우 높은 것으로 판단되었으며 화학구조적으로 유사한 AOPP 계열의 fenoxaprop-P-ethyl과 metamifop에 대해서도 교차저항성이 있음이 확인되었다. ACCase 저해제가 아닌 다른 작용기작을 갖는 대체 제초제를 선발하기 위하여 ALS 저해제에 대해 평가한 결과 pyribenzoxim이 저항성인 서산-5를 비교적 양호하게 방제하는 것으로 확인되었다. 본 연구결과는 한국에서 ACCase 저해제 저항성을 확인한 첫 보고로서 향후 저항성 기작과 저항성 물피의 시공간적 확산 등에 관한 연구에 활용될 수 있을 것으로 판단된다. Six biotypes of Echinochloa crus-galli var. crus-galli were collected from Seosan Hyundai farm, Seosan, Chungnam, Korea, in 2007 and tested with cyhalofop-butyl, to confirm if any of them are resistant to acetyl CoA carboxylase (ACCase) inhibitors. Three biotypes showed strong resistance to cyhalofop-butyl with R/S ratios of greater than 30. Seosan-5 showed the greatest R/S ratio, 96.9, and was also confirmed to have cross-resistance to other ACCase inhibiting aryloxyphenoxy propionate herbicides, fenoxaprop-P-ethyl and metamifop. As an alternative herbicide with a different mode of action, ALS inhibitor pyribenzoxim showed relatively good efficacy against resistant biotype Seosan-5 as compared with cyhalofop-butyl and penosxulam. Our results are the first report of ACCase inhibitor resistance in Korea, and thus extensive further works are required to investigate resistance mechanisms and spatio-temporal dispersal of this reistance in Seosan and other rice paddy fields in Korea where ACCase inhibitors have intensively been used for Echinochloa control.
자궁경부 세포진 검사 미확정 비정형 편평세포에서 HPV DNA chip검사의 임상적 유용성
임수빈 ( Im Su Bin ),송은섭 ( Song Eun Seob ),이동현 ( Lee Dong Hyeon ),김세련 ( Kim Se Lyeon ),박지현 ( Park Ji Hyeon ),황성욱 ( Hwang Seong Ug ),고승권 ( Go Seung Gwon ),임문환 ( Im Mun Hwan ),이병익 ( Lee Byeong Ig ),이우영 ( L 대한산부인과학회 2003 Obstetrics & Gynecology Science Vol.46 No.12
Objective : Cervical intraepithelial neoplasia (CIN) and invasive cervix cancer were detected in some cases of atypical squamous cells of undetermined significance (ASCUS) PAP smear. So it is reasonable to evaluate and manage ASCUS PAP smear. In this stud
임수현 ( Im¸ Su-hyeon ),김윤형 ( Kim¸ Yoon-hyung ),김성우 ( Kim¸ Seong-woo ) 한국유기농업학회 2021 韓國有機農業學會誌 Vol.29 No.4
Since ancient times, ginseng has been cultivated in Korea, and related cultures are also rich. However, the domestic ginseng industry is currently facing many crises. As a source of ginseng, Korea needs to come up with a strategy to cope with the crisis of the ginseng industry and implement it efficiently and effectively using limited resources. This study used the Analytic Hierarchy Process (AHP) to analyze the priority of policies so that ginseng policies can be effectively implemented. The survey was conducted by dividing into two groups of experts, ‘policy managers’ and ‘field experts’. As a result of the study, policy managers seem to believe that the consumption of ginseng is important for the development of the ginseng industry. On the other hand, the field expert group believes that the government should take the initiative to increase the supply capacity of the ginseng industry. Through this study, it will be possible to help in determining the importance of policy, recognizing that the viewpoints of policy can be different for the ginseng industry to develop.
무인기로 촬영한 무 재배지 영상의 정규식생지수(NDVI)를 활용한 병충해 분석 연구
임수현(Su-Hyeon Im),Syed Ibrahim Hassan,Lien Minh Dang,민경복(Kyung-Bok Min),문현준(Hyeonjoon Moon) 대한전기학회 2018 전기학회논문지 Vol.67 No.10
This paper compares and analyzes Fusarium wilt of radish by using an unmanned aerial vehicle(UAV) with the NDVI-7 camera. The UAV have taken near-infrared images of the Radish field in Gangwon area, which is affected by Fusarium wilt. Based on those images, we analyzed NDVI(Normalized difference vegetation index) and compared conditions of radish by using the Blue value among Regular Vegetation Index in NDVI. First, the radish field is divided into three fields for radish, soil and vinyl. Each field has separate Blue values that are radish 0.4890, soil 0.2959, vinyl -0.0605 respectively. Second, radish condition levels are divided into four stages which are normal, early, middle, and late stage of Fusarium wilt. The average values of each stage are normal 0.5165(100%), early 0.4565(88%), middle 0.3444(66%), and late 0.1772(34%) respectively. This result shows that this NDVI value is validated by measuring conditions of Radish and soil.