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24시간 복제 음식물 중의 Fe, Cu, Zn 함량: 유도결합플라즈마-원자발광분광법에 의한 정량분석
백종민,문찬석,Paik, Jong-Min,Moon, Chan-Seok 한국환경보건학회 2007 한국환경보건학회지 Vol.33 No.5
The present study was initiated to examine the measures of dietary intake of Fe, Cu and Zn. The food duplicate samples were collected in Busan and its neighboring area, from the 69 middle-aged women (healthy non-smoking, mostly house wives), who provided informed consent. The samples were wet ashed by being heated in the presence of mineral acids, and Fe, Cu, Zn in the wet-ashed samples were analyzed by inductively coupled plasma - atomic emission spectrometry(ICP-AES). Dietary intake of Fe, Cu and Zn were 10.4 mg/day in Fe, 1.2 mg/day in Cu, 7.4 mg/day as arithmetic mean. The values for dietary Fe and Zn were lower, and the values for dietary Cu were higher than the recommended daily intake from Korean Nutrition Society. Further studies of Korean foods are needed to clarify the representative values for daily dietary Fe, Cu and Zn intake in the Korean population.
사료 급이 유무에 따른 돈사 작업자의 분진 노출량 비교
백종민 ( Jong Min Paik ),김기연 ( Ki Youn Kim ) 한국산업위생학회 2013 한국산업보건학회지 Vol.23 No.2
Objectives: The principal purpose of this study is to statistically compare dust levels among farmers with and without feeding in a nursery pig building. Methods: Total dust and respirable dust were measured by personal sampling method, and TSP and PM10 were monitored by the direct recording method in the pig building. Results: IIn the personal samples, mean exposure levels of total and respirable dust were higher among the farmers who conducted feeding compared to farmers who did not. A significant difference between farmers with feeding and farmers without feeding was found in total dust concentration(p<0.05), whereas there was no significant difference in respirable dust concentrations. In real-time monitoring of dust based on area sampling, the highest levels of total and respirable dust were detected in the feeding time periods; 4.33±2.57 mg/m 3 for TSP and 2.53±1.02 mg/m 3 for PM10, respectively. During time periods without feeding, the levels of total and respirable dust ranged from 1 to 2 mg/m 3 and from 0.5 to 1.5 mg/m 3 , respectively. Conclusions: In terms of association of feeding work and air sampling location, the mean concentrations of total and respirable dust were highest in area sampling with feeding and lowest in personal sampling without feeding. However, a significant difference among groups investigated according to air sampling condition was found in total dust.
차세대 반도체용 구리 배선의 응력과 응력 유발 파손에 관한 연구
백종민 ( Jong Min Paik ),박일목 ( Il Mok Park ),주영창 ( Young Chang Joo ) 대한금속재료학회 ( 구 대한금속학회 ) 2005 ELECTRONIC MATERIALS LETTERS Vol.1 No.1
Damascene Cu interconnects show significant differences in both microstructural and stress behavior compared to those of the Al interconnects patterned using the etching process. Thermal stresses build up during the successive thermal cycles due to the differences in the coefficients of thermal expansion (CTE`s) of the component materials. Other than thermal stresses, growth stresses that are originated from grain growth develop in damascene Cu interconnects as well. In this study, the line width dependence of stress in damascene Cu was examined experimentally as well as with a numerical simulation. The stresses of damascene Cu with a width ranging from 0.13 to 2 ㎛ were measured using x-ray diffraction. The measured hydrostatic stress was found to increase with increasing line width, which was not common tendency for Al interconnects. Microstructure analysis using TEM revealed that the grain sizes increased with increasing line dimensions. The larger stress in the interconnect with large dimension is attributed to the larger grain size, which induce higher growth stress in addition to thermal stress. The contribution of the growth and thermal stress of the damascene lines were quantified based on the grain size data utilizing finite element analysis. By this calculation, the line width dependence of hydrostatic stress of damascene Cu was clearly explained. Finally, the effect of growth stress on stress-related reliability is discussed.
음식물을 통한 어린이와 그들의 어머니에 대한 PCDDs/PCDFs 섭취량 평가
문찬석,백종민,Moon, Chan-Seok,Paik, Jong-Min 한국환경보건학회 2007 한국환경보건학회지 Vol.33 No.1
This study was performed to evaluate the congeners of polychlorinated dibenzo-p-dioxins(PCDDS) and polychlorinated dibenzofurans(PCDFs) in Korean foods among children in Korea, in comparison with the findings in their mothers. The PCDDs and PCDFs intakes of 24-h diet duplicates were estimated from the previous Korean reports. In Korean children and their mothers of this study, major sources of lipid intake were plant-based foods(62% for children, 66% for their mothers). The women took 34% of lipid from animal sources, among which meats were leading sources of animal lipids(30%). Fish and shellfish were accounted for 4% in total lipid intake. Daily intake of PCDDs and PCDFs in the children md their mothers were 0.002-3.188 and 0.002-2.717 pg WHO-TEQ/day in animal sources and ND-0.283 and ND-0.296 pg WHO-TEQ/day in plant sources, respectively. PCDDs/PCDFs intake from animal origin was the major exposure source for both children and their mothers in Korea. Among the 17 PCDD/Fs congeners, 2,3,4,7,8-pentachlorodibenzofuran was assumed to be the effective exposure marker for diet intake.
김정만,최무룡,김준연,백종민,Kim, Jung Man,Choi, Moo Ryong,Kim, Joon Youn,Paik, Jong Min 한국산업보건학회 1993 한국산업보건학회지 Vol.3 No.1
In order to obtain basic information for the extablishment of effectivce industrial safety programmes in heavy industries & construction companies, accident records for 366 injured workes were collected from January, 1989 to December 1991 and analyzed. The results were as follows : 1. The over-all incidence rate of industrial accidents was 2.98% per year 2. Accidents were common in the workers who are in thirties and twenties. 3. According to the duration of services, the workers with jobs on above than 3 years was the most frequent victims (64.2%) 4. According to the view point of working time, the highest incidence was observed just before the end of the work (17:00-19:00). 5. According to the month of year, the incidence was higher in August(14.0%) and May(14.2%), and lowest in January (3.3%) 6. The most common type of accidents was overexertion (24.9%). 7. According to the job, the highest incidence was observed fabrication. 8. According to the site of injuries, the incidence was higher the truck (27.0%) and fingers (25.1%).
문찬석 ( Chan Seok Moon ),백종민 ( Jong Min Paik ) 한국산업위생학회 2011 한국산업보건학회지 Vol.21 No.1
Objectives: This study aims to evaluate the dietary intake and blood concentrations for examination of exposure levels and exposure characteristics of Cd and Pb via food among college students aged 20 years living in Busan area. Methods: Food duplicate per a day and venous blood samples were accepted from healthy man and women college students. The samples were analyzed with graphite furnace atomic absorption spectrophotometer. Results: Dietary intake of Cd and Pb in the participants were 17.5 ㎍Cd/day, 21.7 ㎍Pb/day. Blood concentrations were 2.01 ㎍Cd/L, 4.32 ㎍Pb/dL, respectively. Conclusions: Smoking and drinking habits might be high influential factors in 20 years college students. Dietary intake of Cd and Pb, however, from food group of seaweed, or fish and shellfish in 20 years college students were lower than that in any other age group.
일부 초등학교 교실의 실내공기오염물질 분포 조사에 관한 연구
노영만(Young-Man Roh),김종철(Jong Cheol Kim),이철민(Cheol Min Lee),김윤신(Yoon Shin Kim),하미나(Mina Ha),권호장(Ho-Jang Kwon),정춘화(Chun Hwa Jeong),백종민(Jong-Min Paik),권영규(Young Gyu Kwon) 한국실내환경학회 2007 한국실내환경학회지 Vol.4 No.3·4
This study was surveyed to evaluate and recognize the distribution characteristics of indoor air pollutants(IAPs) such as the total volatile organic compounds(VOCs), formaldehyde(HCHO), PM10, carbon dioxide(CO₂), nitrogen dioxide(NO₂), ozone(O₃) and radon in 10 elementary schools located in urban, rural, and industrial complex area from November 2005 to February 2006. The average concentration of IAPs were 117.9㎍/㎥ as in PM10, 1,971ppm as in CO₂, 486.6㎍/㎥ as in TVOC. These chemical"s concentration was exceeded the indoor air standards of the Department of Education in Korea. The indoor concentrations of ozone and toluene was lower than that of outdoor and other pollutants showed the opposite tendency. In schools located industrial complex area, the outdoor concentration of TVOC was higher than that of urban and rural area. Based on the results above, PM10, CO₂, TVOC have to be in the order of priority to improve the indoor environment in school. Also it should be performed in the detailed survey considered by the seasonal variation because this study showed cross-sectional results.