http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
배광옥 대한두채협회 1990 두채 Vol.8 No.-
콩나물을 재배하는 과정에 있어 원료콩의 선택은 매우 중요하다. 재배장의 환경이나 내부구조, 공급지역의 소비취향, 자신의 재배방법 등을 품종결정의 이유로 삼고 있으나 결정적인 것은 재배에 이용되는 지하수질에 의하여 거의 결정된다고 봐야할 것이다. 각 지방별로 천차만별한 기후조건, 또는 지하수질, 그리고 같은 지역이라 해도 재배상 환경등이 모두 다를 수 뿐이 없는데 여기에는 어떤 콩을 사용하고 있는지 알아보자.
폐쇄형 지열 열펌프 시스템을 포함한 지중 열 거동 정밀 시뮬레이션 모델 개발과 영향 인자별 민감도 분석
김성균,배광옥,심병완,송윤호,이강근 한국자원공학회 2008 한국자원공학회지 Vol.45 No.4
To simulate geothermal heat transport associated with the closed-loop geothermal heat pump (GHP) system, a numerical model named "Modified TOUGHREACT" is developed in this study. It can simulate temperature changes in the GHP system with circulating water through the pipe as well as it computes groundwater flow and aquifer temperature changes. The proposed model is based on TOUGHREACT, a widely accepted three-dimensional numerical simulator for heat and water flow and geochemical reactions in geothermal systems. To verify the model, simulation results are compared with the analytical solution of line source model and data set from an in-situ thermal response test. Simulation results are in very close agreement with both the analytical solution and field test data. The proposed model is used to analyze the sensitivities of design parameters that can affect the performance of closed-loop GHP system. The most sensitive parameters on the system are the thermal conductivity of aquifer and the Darcian groundwater velocity considering acceptable distribution range in the realm of nature. Maximum change of the circulating fluid temperature at the outlet is about 4°C when thermal conductivity of the aquifer changes from 2 W/m-K to 5 W/m-K and the Darcian groundwater velocity changes from 10-8 m/s to 10-6 m/s, respectively. The numerical model can be applied to the optimal design and the evaluation of long-term performance of the GHP system.
통계적 분석 방법을 이용한 국가지하수수질측정망의 오염 등급 정량화 및 평가
윤희성,배광옥,이강근,Yoon, Hee-Sung,Bae, Gwang-Ok,Lee, Kang-Kun 한국지하수토양환경학회 2012 지하수토양환경 Vol.17 No.1
This study suggests a method to grade groundwater quality quantitatively using statistical approaches for evaluating the quality of groundwater in wells included in the Groundwater Quality Monitoring Network (GQMN). The proposed analysis method is applied to GQMN data from 2001 to 2008 for nitrate nitrogen, chloride, trichloroethylene, potential of hydrogen (pH), and electrical conductivity. The analysis results are obtained as groundwater quality grades of the groundwater representing each of the monitoring stations. The degree of groundwater contamination is analysed for water quality parameters, district, and usage. The results show that the degree of groundwater contamination is relatively high by nitrate nitrogen, bacteria and electrical conductivity and at Seoul, Incheon, Gwangju, Gyeonggido and Jeollado. The degree of contamination by nitrate nitrogen and trichloroethylene is especially high when the groundwater is used for agricultural and industrial water, respectively. It is evaluated that potable groudnwater in GQMN is significantly vulnerable to nitrate nitrogen and bacteria contamination.