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.

기고 - 서양 건축미 개념의 역사적 전개 연구 (1) _ 아네르 테트라고노스와 아르카디아

최동호,Choi, Dongho 대한건축사협회 2018 建築士 Vol.585 No.-

유전성 대사 질환 동물 모델에서의 줄기 세포 치료

최동호,이동환,정성철,Choi, Dongho,Lee, Dong Hwan,Jung, Sung-Chul 대한유전성대사질환학회 2005 대한유전성대사질환학회지 Vol.5 No.1

Orthotopic liver transplantation is the treatment of choice for inherited metabolic diseases. However, the supply of donor organs is limiting and therefore many patients cannot benefit from this therapy. In contrast, hepatocytes can be isolated from a single donor liver. They can be transplanted into several recipients, and this procedure may help overcome the shortage of donor livers. A great deal of work with animal models indicates that hepatocytes transplanted into the liver or spleen can survive, function, and participate in the normal regenerative process. Recent clinical studies suggest that hepatocyte transplantation may be useful for bridging patients to whole organ transplantation and for providing metabolic support during liver failure and for replacing whole organ transplantation in certain inherited metabolic diseases. Nowadays, hepatocytes from various stem cells have been regarded as an another cell source for treatment of inherited metabolic diseases. Although cell therapy using stem cells for inherited metabolic disease patient has been accepted only as an experimental trial yet, hepatocytes from stem cells can solve a lot of obstacles in the treatment of inherited metabolic diseases.

기고 - 서양 건축미 개념의 역사적 전개 연구 (3) _ 아네르 테트라고노스와 아르카디아

최동호,Choi, Dongho 대한건축사협회 2018 建築士 Vol.587 No.-

기고 - 파르테논은 어디서 온 것일까?

최동호,Choi, Dongho 대한건축사협회 2017 建築士 Vol.584 No.-

벽체 구조 내화성능 분류체계 설정을 위한 실험적 연구

최동호,김대회,Choi. Dongho,Kim. Daehoi 한국방재학회 2012 한국방재학회논문집 Vol.12 No.4

건축물은 화재시 그 피해를 최소화하기 위해 건축물 주요 구조부를 일정 수준의 내화구조로 시공하고 있다. 현재 국내에서는 이러한 주요 구조부의 내화성능을 정부에서 확인하여 인정한 법정 내화구조를 규정하고 있으나 외국에 비하여 내화성능 및 구조의 구분없이 일률적으로 내화성능을 규정하고 있으며, 이경우도 규정된 후 상당한 시일이 경과되어 최근에 적용되는 건축재료 및 공법기술을 적절히 수용하지 못하고 있는 실정이다. 이에 따라 현재의 법정내화구조에 대한 성능확인 등을 통한 내화성능을 재설정할 필요가 있으며, 이에 본 연구에서는 국내 법정내화구조중 벽체 구조를 대상으로 내화성능을 평가한 후 각 구조별로 법정내화구조를 세분화한 기초자료를 제시하였다. To minimize the damages under fire conditions in buildings, the main structural members of buildings shall be fire-resistance-rated structural members. The relevant authority specifies the prescriptive fire-resistance-rated structural members which have 3-hour fire rating equally without any classification in building laws at present unlike foreign countries. But, these prescriptive fire-resistance-rated structural members don`t properly reflect the recent construction materials and the technical development of methods of construction as a long time has passed. Consequently, it is needed to specify so that the fire resistance performance of structural members can be departmentalized according to the detail design and applied part and to improve the relevant system based on the test materials of fire-resistance-rated structural members economically and efficiently. This study was intended to give the fundamental materials that prescriptive fire-resistance-rated walls are departmentalized as each structure by evaluating the fire resistance performance of prescriptive fire-resistance-rated walls.

기고 - 서양 건축미 개념의 역사적 전개 연구 (2) _ 아네르 테트라고노스와 아르카디아

최동호,Choi, Dongho 대한건축사협회 2018 建築士 Vol.586 No.-

Haddon Matrix 개념을 활용한 노인보행자 교통사고 대책

최동호(Choi, DongHo) 한국노년학회 2006 한국노년학 Vol.26 No.4

The elderly pedestrians have a highly increased risk of death in crashes. Deaths of elderly pedestrians accounted for 52% of all the elderly traffic fatalities. This shows elderly pedestrians are over-represented in fatal crashes. Investigating the literatures and a Police Office's statistical data, this paper addresses an overview of recent trends in elderly pedestrian crashes and the risk factors. With literature review and transportation specialists' survey, the author applied Haddon Matrix to accommodate elderly pedestrian safety. Specific passive countermeasures should include extending pedestrian crossing time, improving crosswalk facilities, and introducing vehicle speed reduction scheme like green zone system. Broad social value and norms which considers the elderly should be implemented as overall cultural system. Alternative forms of transportation like low floor bus and special transit for the elderly should be introduced. Post-event intervention should include pre-hospital care, increasing the rehabilitation centers, and rearrangement of elderly traffic accident data management system. 본고는 문헌과 경찰청 통계자료를 활용하여 노인보행자 사고의 특성을 파악하고, 문헌조사와 교통전문가 설문조사를 바탕으로 Haddon Matrix 개념을 활용하여 우리나라의 노인보행자 교통사고를 줄이기 위한 대책을 마련하고자 하였다. 본고에서 Haddon Matrix를 사용한 이유는, Haddon Matrix를 작성하는 과정에서 관련 이 해당사자들이 브레인스토밍 과정을 거치면서 현실에 적용하기에 적절한 대책들을 마련하게 되고, 이 과정 속에서 각 대책에 대한 폭넓은 이해가 가능해질 뿐만 아니라, 이 대책들을 실행하는 동안 관련기관간의 유기적인 협조가 이루어질 수 있다고 보기 때문이다. 연구결과 노인보행자 교통사고를 줄이기 위해 중점적으로 노력해야 할 사항을 요약하면 다음과 같다. 첫째, 노인들의 실수를 감안하여 수동적 예방대책으로서 물리적으로 안전한 교통환경을 조성해야 한다. 안전한 물리적 환경을 조성하기 위해서는 보행신호시설과 운영을 개선하고, 그린파킹제도를 확대하며, 그린존 도입 등과 같은 제도를 도입할 필요가 있다. 둘째, 노인 보행자를 배려하는 규범이 사회전반적인 문화로 확산되도록 지속적으로 노력해야 한다. 셋째, 노인을 위한 특별교통수단의 확첫과 더불어 저상버스와 같이 노인이 쉽게 이용할 수 있는 대중교통수단을 확첫해야 한다. 넷째, 교통사고 발생 후의 노인의 피해를 최소화하기 위해 응급치료 체계를 개선해야 한다. 다섯째, 노인보행자 교통사고와 관련된 자료의 체계적인 정비가 필요하다.

단일엽에 국한된 다낭성 간질환에서의 수술적 치료

최동호(Dongho Choi),이광수(Kwang Soo Lee),이경근(Kyeong Geun Lee),김한준(Han Joon Kim),박훤겸(Hwon Kyum Park),권오정(Oh Jung Kwon) 대한외과학회 2002 Annals of Surgical Treatment and Research(ASRT) Vol.63 No.2