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김용욱,차시환 한국산업안전학회 1988 한국안전학회지 Vol.3 No.1
This research investigated the condition for plant design on reclamation of waste plastic by heat decomposition. The results were summarized as follows 1. The highest of oil product by heat decomposition is about 54.7%. 2. The optimum reaction temperature is about 300-400℃. 3. The optimum reaction time is 2-3 hours. 4. When the flow rats of 8-16 ㎝/sec in column reactor the yield is maximum. 5. Waste plastics yielded of carbon black product by heat decomposition at the optimum condition is about 23.5%. 6. Calorific values 0:1 were 9820 Kcal/㎏.
Kim, Kyung-A,Kim, Jong-Chan,Ko, Hoan-Uck,Lee, Jung-Bock,Kim, Young-Sug,Park, Yong-Bae,Lee, Myung-Jin,Kim, Myung-Gill,Kim, Jae-Kwan,Park, Eun-Mi 대한미생물학회 2008 Journal of Bacteriology and Virology Vol.38 No.2
The integrated cell culture-PCR (ICC-PCR) method has been suggested as an improved method for detection of viruses in water environments. We tested 57 source waters including finished water samples in Gyeonggi-do for enteric viral contamination using total culturable virus assay (TCVA) using BGMK cells and ICC-PCR. Nineteen of the 57 source water samples (33.3%) exhibited the cytopathic effect (CPE) on BGMK cells and no finished water did exhibited CPE. Nineteen samples (33.3%) of the 57 were positive for reoviruses. For the enteroviruses, only 3 samples (5.3%) of the 57 samples showed positive results. By using ICC-PCR method, 202 flasks from source water samples were positive for enteroviruses and reoviruses. Three samples from source water were positive for both viruses. However, any flasks tested was not co-infected with two types of viruses. While the enteric viral frequencies in TCVA and ICC-PCR were similar, the viral frequency for reoviruses at first passage in two type of method was higher in ICC-PCR (94.7%) than TCVA (56.9%).
Salmonella othmarschen에 의한 집단식중독사례의 분자역학적 분석
방선재,박광희,박명기,권연옥,고환욱,Bang, Seon-Jae,Park, Kwang-Hee,Park, Ki-Myung,Kwon, Yeon-Ok,Ko, Hoan-Uck 한국환경보건학회 2008 한국환경보건학회지 Vol.34 No.2
The strains of Salmonella othmarschen and Norovirus isolated from outbreak A, the funeral ceremonies incidents in Ouri-shi of Oyeonggido in, 2007, were subjected to genotyping by using PFGE and extraction of RNA by using RT-PCR. 24 Salmonella othmarschen were isolated from 37 cases (patients 12 cases, cookers 4 cases, foods 7cases, knife, kitchen board, dish towel 4 cases, etc) and PFGE patterns showed that 22 strains isolated from the same incident were almost of the same pattern and 2 strains exhibited 50% of the pattern. Antimicrobial susceptibility patterns were such that there were 22 case susceptibility patterns and 2 case resistance patterns (strain 4: AM, CF, CIP, NA, TE TIC and strain 13: CF, CZ). Norovirus G1 (1case), Norovirus G2 (7cases), Norovirus G1,G2 (1case) were detected by using RT-PCR. The fine typing ability and reliability of PFGE and BioNumerics are helpful for establishing out the foodborne pathogens of outbreaks.
윤미혜(Mi-Hye Yoon),엄미나(Mi-Na Eom),도영숙(Young-Sook Do),정홍래(Hong-Rae Jung),정일형(Il-Heoung Jeong),고환욱(Hoan-Uck Ko),손진석(Jin-Seok Son) 대한환경위생공학회 2005 대한환경위생공학회지 Vol.20 No.2
This study was performed to survey and evaluate the contents of plasticizers such as DEP(diethyl phthalate), DPrP(di-n-propyl phthalate), DBP(di-n-butyl phthalate), DPP(di-n-pentyl phthalate), DCHP(dicyclohexyl phthalate), BBP (butylbenzyl phthalate), DEHP (di-(2-ethylhexyl) phthalate) and DEHA(di-(2-ethylhexyl) adipate), which are suspected as endocrine disruptors, in food and drug PVC packaging. Tested samples were 5 food wraps, 35 food containers, 40 food and drug packages(type of tablet and capsule) in Gyeonggi-Do area. The contents of DEHA in wrap were 188.9g/㎏, 203.1g/㎏, 238.4g/㎏, 290.9g/㎏ and 308.3g/㎏, respectively, while the other plasticizers were not detected. DEHP was used in 4 samples of food containers and DEHP contents were 4.7g/㎏, 30.7g/㎏, 35.8g/㎏ and 53.4g/㎏, respectively. In food and drug packaging materials(type of tablet and capsule), the plasticizers were not detected.
윤미혜(Mi-Hye Yoon),엄미나(Mi-Na Eom),도영숙(Young-Sook Do),정홍래(Hong-Rae Jung),정일형(Il-Heoung Jeong),고환욱(Hoan-Uck Ko),손진석(Jin-Seok Son) 대한환경위생공학회 2004 대한환경위생공학회지 Vol.19 No.3
This study was performed to survey and evaluate contents of Pb and Cd in colored plastic kitchenwares by Korea Food Sanitation Act. The tested samples were 160 products(32 PE, 65 PP, 10 PS, 18 ABS and 35 MF) in a local market. The Pb and Cd contents range in the samples were ND~357.l㎎/㎏ and ND~376.6㎎/㎏. Pb contents in 6 samples(1 PE, 1 PP, 2 PS and 2 MF) and Cd contents of 2 samples(1 PE and 1 ABS) were above the legal limits. Among the illegal smples, Pb contents were 140.8㎎/㎏, 283.4㎎/㎏, 134.0㎎/㎏, 329.2㎎/㎏, 357.l㎎/㎏ and 218.3㎎/㎏, respectively and Cd contents were 123.l㎎/㎏ and 376.6㎎/㎏. Pb and Cd in various food simulants were not detected in migration test for illegal samples. Simulants were tested at 25℃ and 60℃ for n-heptane and 4% acetic acid, and 60℃ and 95℃ for water.