http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김광래,길혜경,김현국,김은숙,노방식,홍주희,이진,김정연,이만호,엄석원,이재영,Kim, Kwang-Rae,Gil, Hae-Kyung,Kim, Hyun-Kook,Kim, Eun-Sook,Roh, Bang-Sik,Hong, Ju-Hee,Lee, Jin,Kim, Jeong-Yeon,Lee, Man-Ho,Eom, Seok-Won,Lee, Jai-Young 한국지하수토양환경학회 2010 지하수토양환경 Vol.15 No.6
We investigated springs in Seoul in 2009 to know the change of water quality according to storage method of spring water, the concentration of chemical compounds and their correlation. Even spring water that originally satisfied national standard for drinking water could be exceeded national standard for drinking water by storage method such as storage bottle, temperature and period; especially used PET bottles could affect the increase of total colony counts. Therefore, spring water is desirable to be consumed on the spot, or to be stored in sterilized bottles in refrigerator rather than room temperature at home, and also to be consumed shortly not exceeding 24 hours. Total colony counts, coliform, yersinia, $F^-$, $Cl^-$, $NO_3^--N$, hardness, total Solids, pH, color and Al were exceeded national standard for drinking water at some springs. The result of correlation analysis shows that hardness and total solids, which are caused by several ionic compounds, had relatively high correlations with other chemical compounds.
소형챔버를 이용한 드라이클리닝 모직물 목도리의 휘발성유기화합물 방출 특성
신진호(Jin-ho Shin),권승미(Seung-mi Kwon),김현수(Hyun-soo Kim),노방식(Bang-Sik Roh),김광래(Kwang-rae Kim),어수미(Soo-mi Eo),정권(Kweon Jung),이영규(Young-Kyu Lee) 한국환경보건학회 2017 한국환경보건학회지 Vol.43 No.2
Objectives: This study was conducted to evaluate the emission of VOCs from clothing that had been dry cleaned. Methods: In order to ensure the same conditions, f100% wool scarves were selected as the fabric type. Four identical tests were conducted on the option of either removing the plastic bags which came from the dry cleaning shop or not . The scarf was located inside a closet or room for one or two days. Small chamber tests were conducted to determine the VOC emission characteristics under the same conditions such as temperature, humidity, loading factor, and air exchange rates. Air from the chamber for VOCs was sampled by Tenax TA tube and analyzed by thermal desorption and GC/MSD. Results: Assuming that test represented dry cleaning and consumer’s conditions well enough, we can conclude that immediate emissions after the dry cleaning of the scarfs caused elevated levels of TVOC, five VOCs (benzene, toluene, ethylbenzene, xylene, stylene), and decane group compounds. Conclusions: By removing the plastic bags which came from the dry cleaning shop or not, the storage conditions of dry cleaned scarfs by consumers during the storage time periods (one to three days) would be significant for reducing VOC emissions.
배급수계통에서 잔류염소 및 THMs 분포 예측에 관한 연구
안재찬(Jae Chan Ahn),이수원(Su Won Lee),노방식(Bang Sik Rho),최영준(Young Jun Choi),최재호(Jae Ho Choi),김효일(Hyo Il Kim),박태준(Tae Jun Park),박창민(Chang Min Park),박현(Hyeon Park),구자용(Ja Yong Koo) 大韓環境工學會 2007 대한환경공학회지 Vol.29 No.6
본 연구에서는 배급수계통에서 잔류염소와 THMs의 분포를 예측하는 방안을 제시하였다. 잔류염소와 THMs의 등의 수질변화에 대해 현장조사를 실시하였고, 수체와 관벽에 대한 잔류염소 감소계수와 THMs의 생성계수를 산출하여 관망해석에 의한 수질모델링에 적용하였다. 병실험을 통해 잔류염소 병렬 1차 수체 반응계수를 구하고, 5개 관벽 감소 모델을 비교 평가하여 1차 관벽 감소계수 산출하고 적용했을 때 잔류염소 현장 측정값과 관망 수질모델링에 의한 예측값의 평균절대오차 및 평균제곱근오차가 각각 0.03, 0.037 mg/L로 가장 작았다. 또한 병실험에 의한 THMs생성량을 비선형 회귀분석으로 1차 생성계수를 구하고 현장 측정값과 비교하였다. 그 결과, 9월의 현장 측정값과 예측값의 결정계수 R2는 0.98, 11월에는 0.82로 예측이 가능하였다. This study suggested a method for prediction of residual chlorine and THMs in water distribution system by measurement of residual chlorine, THMs, and other parameters, estimation of chlorine decay coefficients and THM formation coefficients, and simulation of water qualities using pipe network analysis. Bulk decay coefficients of parallel first-order were obtained by bottle tests, and pipe wall decay coefficients of first-order were estimated through evaluation of 5 models, which showed the lowest values of 0.03 for MAE(mean absolute error) and 0.037 MAE in comparison with the observed in field. And bottle tests were conducted to model first-order reaction of THM formation by nonlinear least square regression and the resultant coefficients were compared with the observed in field. As a result, the coefficients of determination(R2) for the observed and the predicted values were 0.98 in September and 0.82 in November, and the formation of THMs was predicted by modeling.