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SIREM1 모델을 이용한 수초에 의한 하천 수질 변화 분석
박석순,홍헌표 이화여자대학교 환경문제연구소 1997 이화환경연구 Vol.1 No.-
Water quality changes caused by macrophytes was quantitatively analyzed in this paper, using SIREM1 model. The model was calibrated and verified to water quality data collected from Tan stream where an excessive growth of macrophytes was observed in upstream area. The water quality parameters included in the model were dissolved oxygen(DO), carbonaceous biochemical oxygen demand(CBOD), and nutrients. Diurnal dissolved oxygen was simulated using QUAL2E model developed by USEPA as well as SIREM1 model. The results from SIREM1 model showed good agreement with field measurements. However, QUAL2E model could not represent the fluctuation of diurnal dissolved oxygen. Model sensitivity was analyzed with regard to several parameters which include temperature, reaeration coefficient, photoperiod , and light intensity. The role of macrophytes in the water quality changes was examined. The results indicated that macrophytes played an important role of controlling diurnal dissolved oxygen variations, nutrient uptake/recycle, and the generation of autochtonous organic matter. It was concluded from this study that SIREM1 model could effectively simulate diurnal dissolved oxygen and other conventional water qualities in macrophyte dominated stream.
SIREM1 모델을 이용한 수초에 의한 하천 수질 변화 분석
박석순,홍헌표 ( Seok Soon Park,Heon Pyo Hong ) 한국물환경학회 1997 한국물환경학회지 Vol.13 No.2
Water quality changes caused by macrophytes was quantitatively analyzed in this paper, using SIREM1 model. The model was calibrated and verified to water quality data collected from Tan stream where an excessive growth of macrophytes was observed in upstream area. The water quality parameters included in the model were dissolved oxygen(DO), carbonaceous biochemical oxygen demand(CBOD), and nutrients. Diurnal dissolved oxygen was simulated using QUAL2E model developed by USEPA as well as SIREM1 model. The results from SIREM1 model showed good agreement with field measurements. However, QUAL2E model could not represent the fluctuation of diurnal dissolved oxygen. Model sensitivity was analyzed with regard to several parameters which include temperature, reaeration coefficient, photoperiod, and light intensity. The role of macrophytes in the water quality changes was examined. The results indicated that macrophytes played an important role of controlling diurnal dissolved oxygen variations, nutrient uptake/recycle, and the generation of autochtonous organic matter. It was concluded from this study that SIREM1 model could effectively simulate diurnal dissolved oxygen and other conventional water qualities in macrophyte dominated stream.
임동선,홍헌표,심영보,신상민,엄재복 한국화재감식학회 2023 한국화재감식학회 학회지 Vol.14 No.4
Analyzing electrical singularities using X-ray analysis equipment of fire investigation vehicles arrived to the fire site can be useful as it can quickly determine the source of ignition through arc mapping analysis at the site. In addition, in the case of non-destructive inspection using X-ray, melted material such as PVC is melted so that it cannot be disassembled, or fire ignited by LED elements with high risk of damage to the original, In the case of multi-socket, it is useful for determining the firing point, where tracking occurs at the connection part which is connected by the power lines. And secondary short-circuit marks are formed by flames. When evidence is collected and requested to an appraisal agency, the reliability of the collected evidence can be further increased by attaching the X-ray nondestructive test result before disassembly. It is very important to secure physical evidence that is the basis for identification for a comprehensive conclusion at the fire scene. In addition, it is important to detect electrical singularities immediately using the X-ray of the fire investigation analysis vehicle at the fire site and to link the analysis in the analysis room.