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강우시와 비강우시 BOD 유출 특성 조사 및 원단위 평가
최동호,조소현,황태희,김영석,정재운,최우정,박현규,윤광식,Choi, Dongho,Cho, Sohyun,Hwang, Taehee,Kim, Youngsuk,Jung, Jaewoon,Choi, Woojung,Park, Hyunkyu,Yoon, Kwangsik 한국물환경학회 2017 한국물환경학회지 Vol.33 No.5
The biologic Oxygen Demand (BOD) is a reliable and generally accepted indicator of water pollution by organic pollutants. Accordingly, estimation of BOD export from paddies carries important implications fwith regard to water management in rural areas. In this study, hydrology and BOD concentration were monitored during the period 2008 through 2012, in an effort to understand the characteristics of BOD export from paddy fields. The findings demonstrated that BOD load by rainfall above 50 mm. occupied about 50 % of total load, whereas the load by less than ten mm. rainfall occupied about 29 % of the total load during periods of stormy activity. It therefore seems that it could be possible to reduce the BOD load up to 29 % during storm periods, when drainage control conducted for rainfall less than ten mm.(an amount which is relatively easy to manage). The documented mean loads of storm and non-storm were $17.1kg\;ha^{-1}\;yr^{-1}$ and $11.2kg\;ha^{-1}\;yr^{-1}$, respectively. The BOD load during the significant rainfall period was similar to the renewed unit load by NIER (2014). However, there were substantial differences between unit load and actual load when the non-storm load was incorporated into the BOD load estimation from paddy fields. In view of the foregoing, it is felt that, the non-storm load needs to be further considered and managed for the successful implementation of Total Maximum Daily Load (TMDL) program.
논 관개수, 담수 및 유출수의 용존인과 총인 농도 변화
최동호,조소현,정재운,박현규,최우정,윤광식,김영석,Choi, Dongho,Cho, Sohyun,Jung, Jaewoon,Park, Hyunkyu,Choi, Woojung,Yoon, Kwangsik,Kim, Youngsuk 한국물환경학회 2017 한국물환경학회지 Vol.33 No.4
In order to understand the characteristics of phosphorus in the paddy field, this study analyzed $PO_4-P$ and T-P concentrations of irrigation water, flooding water, and runoff from 2008 to 2010. The variation of phosphorous form within hydrologic cycle around the rice paddy field was investigated using the ratio of $PO_4-P$ to TP. In addition, the correlation between pH, EC, and DO in flooding water was analyzed and the factors affecting phosphorus form in paddy field were investigated. The concentration of T-P in flooding water was high during the survey period, and the concentration of T-P in runoff was assumed to be decreased by dilution due to irrigation and rainfall. On the other hand, the ratio of $PO_4-P$ to T-P was lower in flooding water than those of irrigation water and runoff, which was interpreted to be due to the fact that the phosphorus fertilizer was applied in the paddy field but the adsorption was rapidly occurred to the paddy field by the soil. The similar proportions of $PO_4-P$ to T-P in flooding water and runoff suggest that the form of phosphorus outflowed from the paddy is influenced by the form of phosphorus in the flooding water of paddy field. In addition, DO concentration in flooding water showed negative correlation with the concentrations of $PO_4-P$ and T-P. The effort to survey frequent irrigation water quality data is required for the analysis of phosphorus behavior in the paddy water system since concentration of phosphorous and DO in irrigation water would influence rhe form of phosphorous in flooding water and subsequent runoff.
한방병원에 입원한 흉곽출구증후군을 동반한 Wrist Drop 환자에 대한 한방 치료 1예
민태운,강도현,안재서,이현준,이한솔,김한결,이성민,조소현,지형욱,고일환,김지원,윤정민,정혁진,Min, Taewoon,Kang, Dohyeon,Ahn, Jaeseo,Lee, Hyunjun,Lee, Hansol,Kim, Hankyul,Lee, Seongmin,Cho, Sohyun,Ji, Hyungwook,Ko, Ilhwan,Kim, Jiwon,Yun, Jung 한방재활의학과학회 2022 한방재활의학과학회지 Vol.32 No.4
The purpose of this study is to report the effects of Korean medicine treatment in wrist drop patient with thoracic outlet syndrome. We treated the patient for 8 days using Korean medicine treatment such as herbal medicine, acupuncture, Chuna manual therapy and pharmacopuncture. Changes in the numerical rating scale (NRS), EuroQol five dimension (EQ-5D) index, and symptoms were measured for assessment. After 8 days hospitalization, NRS decreased from 5 to 3, EQ-5D index and the symptoms of the patient also were improved. In conclusion, this case shows that Korean medicine treatment can be an effective treatment for wrist drop with thoracic outlet syndrome.
최동호 ( Dongho Choi ),정재운 ( Jaewoon Jung ),윤광식 ( Kwangsik Yoon ),최우정 ( Woojung Choi ),조소현 ( Sohyun Cho ),범진아 ( Jina Beom ),유승화 ( Seungwha Yoo ) 한국환경영향평가학회 2015 환경영향평가 Vol.24 No.5
The unit load of paddy field was estimated by several methods and compared in this study. Four year field study was conducted at the paddy fields located in Yeongsan river and Sumjin river basins. The unit load was estimated by four methods; ① averaging field monitored load; ② NIER (National Institute of Environmental Research) method which use EMC(Event Mean Concentration) and runoff ratio of rainfall groups with rainfall weighting factors; ③method using EMC determined by best fit probability distribution; ④method using arithmetic mean EMC and runoff ratio. The result of this study showed that the unit loads of water quality constituents by field monitoring was similar to those of NIER method whereas those by probability distribution(log-normal, gamma) method were less than unit loads of NIER method. The unit loads by arithmetic mean EMC and runoff ratio were larger than those by NIER method. The unit load by NIER method showed higher BOD, COD, SS, lesser T-N, and similar T-P values when compared to unit loads determined by MOE in 1995.
최동호 ( Dongho Choi ),윤광식 ( Kwangsik Yoon ),정재운 ( Jaewoon Jung ),유승환 ( Seunghwan Yoo ),김영석 ( Youngsuk Kim ),범진아 ( Jina Beom ),조소현 ( Sohyun Cho ),최유진 ( Yujin Choi ) 한국농공학회 2016 한국농공학회 학술대회초록집 Vol.2016 No.-
유역의 효과적인 수질관리를 위해 오염원의 정량적으로 규명하고 유역 말단의 유달부하량 산정하는 것은 중요하다. 유달부하량을 산정하는 다양한 방법 중 오염원으로부터 하천으로 유입되는 배출부하량과 해당 유역의 출구까지 도달한 부하량인 유달부하량과의 관계를 나타내는 유달율에 대한 연구가 이루어지고 있다. 특히, 배출부하량 산정시 토지계, 생활계, 축산계, 산업계, 양식계, 매립계의 원단위를 적용하고 있다. 최근 국립환경과학원에서는 환경기초조사사업을 통해 장기적인 모니터링을 통해 새로운 토지계 원단위를 제시하였다. 따라서, 본 연구에서는 토지계 원단위 변화에 따른 배출부하량과 유달율을 산정하고자 한다. 대상유역인 풍영정천 유역은 영산강수계에 위치하고 있으며, 유역면적은 68.93 km2, 유로장은 14 km 이며, 토지이용은 도시 25.7%, 농업 46.9%, 산림 15.9%, 초지 6.0%, 기타 5.6%로 구성된 복합유역이다. 풍영정천 유역의 배출부하량은 수계오염총량관리지침에 의거해 산정하였다. 유달부하량 산정을 위해 유역 말단에 위치하고 있는 영산강홍수 통제소의 유량자료를 활용하였으며, BOD와 T-P의 수질자료는 물환경정보시스템(2010~2015)과 환경기초조사사업(2014~2015) 자료를 활용하였다. 토지계 원단위 변화에 따른 배출부하량 변화를 분석하기 위해 다른 오염원의 원단위는(생활계, 축산계, 산업계, 양식계, 매립계) 고정하였다. 구 원단위 적용에 따른 BOD의 배출부하량은 2,845.8 kg/day(점 773.8 kg/day, 비점 2,072.0 kg/day)였으며, T-P의 배출부하량은 98.3 kg/day (점 36.4 kg/day, 비점 61.9 kg/day)였다. 신 원단위 적용에 따른 BOD의 배출부하량은 1,438.7 kg/day(점 773.8 kg/day, 비점 664.9 kg/day) 였으며, T-P의 배출부하량은 72.6 kg/day(점 36.4 kg/day, 비점 36.1 kg/day)였다. BOD 배출부하량은 신원단위 적용시 구 원단위 적용시 보다 비점오염원에서 약 70% 감소, T-P 배출부하량은 약 40% 감소하는 것으로 나타났다. 원단위 변경 전 BOD 풍수기, 평수기, 저수기, 갈수기 유달율은 각각 24.2%, 15.3%, 8.1%, 4.5% 였으며, 유황조건에 따른 T-P 유달율은 각각 29.4%, 11.3%, 7.2%, 3.1% 였다. 원단위 변경 후 BOD의 풍수기, 평수기, 저수기, 갈수기 유달율은 47.9%, 30.4%, 16.1%, 8.9% 였으며, T-P 유달율은 각각 39.8%, 15.3%, 9.7%, 4.2%였다. 원단위 변경 후 BOD의 유달율은 원단위 변경 전 보다 1.97배, T-P 유달율은 1.35배 증가한 것으로 분석되었다.