肝蛭感染의 經濟的 損失과 管理

李松權(Song Kwon Lee) 서울대학교 보건환경연구소 1973 보건학논집 Vol.10 No.1

기업체 식당종사자의 근골격계 부담 작업에 대한 위험성 평가

이송권 ( Song Kwon Lee ),유왕근 ( Wang Keun Yoo ),이정희 ( Jeong Hee Lee ),임무혁 ( Moo Hyuk Lim ),박만철 ( Man Chul Park ),차상은 ( Sang Eun Cha ),기윤호 ( Yun Ho Ki ) 한국산업위생학회 2007 한국산업보건학회지 Vol.17 No.2

This study was performed to find out hazardous factors in the loaded works of muscular skeletal disorders(MSDs) for four company attached to dining workers from October 2005 to June 2006. The results are summarized as follows. 1. 42.5% of workers in study group were 40-50 years old, and females were higher than males , and the average of body weight was 70kg , 57kg in males and females, respectively. Working time per day was mostly 7-9hours, and the rate of worker who had never education and training was 46%. 2. The upper part and right part of body were higher than lower part and left part in symptoms of muscular skeletal disorders. Body parts which complained of symptoms were the order of right shoulder(55%), right arm(54%), right hand(40%), waist(35%), leg(25%), and neck(24%). 3. The results of evaluation in the loaded works of muscular skeletal disorders to cooking, dish supply, preparing side dish, and washing the dishes and cleaning the floor of cooking room using RULA and OWAS checklists was action level 4(potential hazards, needs of change workplace), and the result of evaluation using back compressive force needed control measures as 779.27 lbs~1,274.04 lbs. In a view point of the result of this study, large dining rooms should be designed by ergonomic technology for the work surface height, width, and depth. The height of carrying car should be lower to 70cm, and repetitiveness and handling weight should be reduced by mechanical means, and education and training also should be performed for all of workers positively.

체중 및 건강행태변화가 혈압 및 콜레스테롤에 미치는 영향 - 철강제조업체 근로자를 대상으로 한 3년 추구연구 -

하명화,이송권,이덕희,Ha, Myung-Hwa,Lee, Song-Kwon,Lee, Duk-Hee 대한예방의학회 1999 예방의학회지 Vol.32 No.3

Objectives: We investigated the effects of changes in obesity and life style factors, such as cigarette smoking, alcohol drinking, and exercise, on the changes in blood pressure and serum cholesterol among Korean men. Methods: This study included 7,205 healthy male employees in the steel manufacturing industry. Each subject underwent health examination in 1994 and was re-examined in 1997. The study subjects were classified into four categories, according to changes in body mass index (BMI) (loss; stable; mild gain: severe gain), cigarette smoking (quitter; nor-smoker; smoker continued; smoker started), alcohol drinking (quitter; non-drinker; drinker continued; drinker started) and exercise (more exercise; continuous regular exercise; continuous irregular or no exercise; less exercise), respectively. We evaluated the relationship between the categories of change in those independent variables and the changes in blood pressure and serum cholesterol, adjusted for BMI in 1994 and age by analysis of variance. Results: The change in systolic blood pressure was positively associated with the changes in BMI (p<0.001) and drinking (p=0,001), but negatively with smoking (p=0,004), compared to the first category of each independent variables. The systolic blood pressure was significantly less increased in the continuous smoking group than quitter or hon-smoker. The changes in diastolic blood pressure and serum cholesterol appeared to have statistically significant linear relationships only with the change in BMI. The change in exercise showed a marginal significance with diastolic blood pressure (p=0.088). Conclusions: These prospective data emphasize the importance of obesity as a determinant of the changes in blood pressure and serum cholesterol. In addition, the changes in smoking and drinking habits can affect systolic blood pressure.

조선소 용접작업자들의 총용접흄과 호흡성분진농도 비교연구

강용선,심상효,이송권,빈성오,최은석,Kang, Yong-Seon,Sim, Sang-Hyo,Lee, Song-Kwon,Bin, Sung-Oh,Choi, Eun-Seok 한국환경보건학회 2007 한국환경보건학회지 Vol.33 No.4

The purpose of this study is to assess the accurate state of the following: total welding fumes versus welding fumes in the air, respirable particulate mass, and exposure of dockyard welders to heavy metals. In addition, this study provides basic data for proposing improvements to create efficient and appropriate welding environments and to prevent occupational diseases. The subjects of this study were 94 laborers who worked at the block construction sites of large-scale dockyards located in Gyeongnam Province from March 2005 to June 2005. In order to collect samples on total welding fumes in the air and respirable particulate mass from the welders, Methods 0500 and 0600, established by the National Institute for Occupational Safety and Health (NIOSH), were used. The metals within the welding fumes were also analyzed using Inductively Coupled Plasma (ICP) under Method 7300 from NIOSH. The results of this research are summarized below. The geometric mean concentration of total welding fumes and that of respirable particulate mass were $4.11\;mg/m^3\;and\;3.53\;mg/m^3$, respectively. As a result of comparing the two measurement methods, there were significant differences (p<0.05) between the two groups for Ca, Cu, Cr, and Ni; however, there were no differences in Fe, Mg, Zn, Mg, Pb, and Cd. As a result of the analysis, the correlation between Mn and the concentration of heavy metals in the total welding fumes and respirable particulate mass was found to be -0.29, a significant negative correlation. The correlation between other heavy metals, however, was low. Finally, in the same total welding fumes, the correlation of Fe and Mg was high.

대구지역 내 일부 치과기공소의 공기 중 석면농도

임무혁 ( Moo Hyuk Lim ),이송권 ( Song Kwon Lee ),정인호 ( In Ho Jung ) 한국산업위생학회 2004 한국산업보건학회지 Vol.14 No.3

This study was performed to investigate the problems of using asbestos for dental technicians. Samples for analyzing were sampled by personal sampler in 40 sampling points of 10 dental laboratories in Daegu city from December, 2003 to February, 2004 and counted with phase contrast microscopy. The results were as follows: 1. Asbestos concentration(geometric mean) of 40 sampling points in 10 dental laboratories was 0.0061 f/cc and it was under recommended industrial and indoor air standard, but the concentration of asbestos in only two dental laboratories was over indoor recommended standard. 2. The concentration of asbestos in processing room and burnout room was 0.0099 f/cc and 0.0037 f/cc, respectively. 3. The mean concentration(GM) of asbestos by kinds of casting ring liners was 0.0159 f/cc in dental laboratories using industrial asbestos, 0.0104 f/cc in them using asbestos containing ring liners, and 0.0026 f/cc in them using non-asbestos ring liners. Casting ring liners using in dental laboratories should be substituted with non-asbestos liners, because most of dental laboratories were using asbestos containing ring liners and a few of them showed higher concentration than recommended standard.

중년 남성 근로자에서 신체 적합도, 여가중 신체 활동과 혈중 지질 농도

김장락,남복동,김주호,이송권,문중갑,이장호,홍대용,Kim, Jang-Rak,Nam, Bock-Dong,Kim, Ju-Ho,Lee, Song-Kwon,Moon, Joong-Kap,Lee, Jang-Ho,Hong, Dae-Yong 대한예방의학회 1996 예방의학회지 Vol.29 No.2

본 연구는 40세 이상 중년의 남자 근로자 253명을 대상으로 신체 적합도 및 여가중 신체 활동과 혈중 지질 중 심혈관질환 발생에 특히 중요한 혈중 총콜레스테롤 값, HDL 콜레스테롤 값 및 총콜레스테롤/HDL 콜레스테롤 비와의 관련성을 알아 보기 위하여 시도된 단면조사연구이다. 단순분석에서 혈중 총콜레스테롤 값과 유의한 상관 관계가 있는 변수는 신체 적합도(r=-0.27), 비만지수(r=0.27)였다. 여가중 신체 활동은 총콜레스테롤 값이 170mg/dl 이상군에서만 총콜레스테롤 값과 유의한 상관관계(r= -0.20)가 있었다. HDL 콜레스테롤 값과 유의한 상관관계가 있는 변수들은 신체 적합도(r=0.15), 비만지수(r=-0.22)및 1주간 음주량(r=0.14)이였다. 총콜레스테롤/HDL 콜레스테롤 비와 유의한 상관관계가 있는 변수들은 신체 적합도(r=0.23), 비만지수(r=0.32), 총흡연지수(r=0.13), 1주간 음주량(r=-0.13) 및 야채 선호도(r=0.13)이었다. 신체 적합도는 안정시 맥박수와 중등도의 상관관계(r=-0.66)가 있었고, 여가중 신체 활동(r=0.19)및 비만지수(r=-0.18)와도 유의한 상관관계가 있었다. 다중회귀분석(Multiple linear regression) 결과 혈중 총콜레스테롤 값과 유의한 관련성을 보이는 변수는 신체 적합도(beta=-0.23)와 비만지수(beta=0.18)이었다. HDL 콜레스테롤 값과 유의한 관련성을 보이는 변수는 비만지수(beta=-0.25)뿐이었다. 총콜레스테롤/HDL 콜레스테롤 비와 유의한 관련성을 보이는 변수는 비만지수(beta=0.30)와 신체 적합도(beta=-0.16) 및 야채선호도(beta=0.14)이었다. 결론적으로 중년 남성 근로자들에서 신체 적합도는 비만지수와 함께 혈중 총콜레스테롤 값, HDL 콜레스테롤 값, 총콜레스테롤/HDL 콜레스테롤 비의 중요한 관련 요인이었다. 여가중 신체 활동은 혈중 총콜레스테롤 값이 170mg/dl 이상인 군에서만 혈중 총콜레스테롤 값과 관계가 있었고, 신체 적합도와는 관련성이 유의하지만 크지 않았다. 따라서 신체 적합도가 여가중 신체 활동보다 혈중 지질 농도의 더 중요한 관련요인이며, 앞으로 신체 활동에 관련된 역학적 연구에서 신체 적합도가 독립적이고 중요한 요인으로 추가되어야 할 것이다. This is a cross-sectional study to evaluate the relationships between physical fitness, leisure time physical activity, and serum lipid levels in middle-aged male workers. Physical fitness was measured by a step test score, and leisure time physical activity was self-reported on a questionnaire. Serum total cholesterol was negatively related to physical fitness(r=-0.27), and positively to obesity index(r=0.27). But leisure time physical activity was related to total cholesterol negatively(r=-0.20) only in subjects whose total cholesterol levels were above 170mg/dl. High density lipoprotein(HDL) cholesterol was positively related to physical fitness(r=0.15), negatively to obestiy index(r=-0.22), and positively to weekly alcohol consumption(r=0.14). Total cholesterol/HDL cholesterol ratio was related to physical fitness(r=-0.23), obesity index(r=0.32), total cigarette index (r=0.13), weekly alcohol consumption(r=-0.13), and vegetable preference(r=0.13). Physical fitness was also related to leisure time physical activity(r=0.19) and obesity index(r=-0.18). In multiple linear regression models, physical fitness(beta=-0.23) and obesity index(beta=0.18) were significantly associated with total cholesterol, obesity index(beta=-0.25) with HDLcholesterol, and obesity index(beta=0.30), physical fitness(beta=-0.16) and vegetable preference (beta=0.14) with total cholesterol/HDL cholesterol ratio. In conclusion, as physical fitness has a stronger relationship with serum lipid levels than leisure time physical activity, and the association between physical fitness and leisure time physical activity is modest, physical fitness should be added as an important variable in addition to activity in future epidemiologic studies.

오배자가 구강에서 분리된 미생물에 대한 항균효과 및 구강 편평세포암종 KB 세포에 미치는 영향

이영선(Young Sun Lee),한옥경(Ok Kyung Han),배만종(Man Jong Bae),김광중(Kwang Joong Kim),신상우(Sang Woo Shin),이송권(Song Kwon Lee),박종현(Jong-Hyun Park) 한의병리학회 2003 동의생리병리학회지 Vol.17 No.6

조선업 용접작업장의 공기중 입자상물질 및 구성성분에 관한 연구

강용선 ( Yong Seon Kang ),신중규 ( Joong Kyu Shin ),이송권 ( Song Kwon Lee ),윤충식 ( Chung Sik Yoon ),임무혁 ( Moo Hyuk Lim ),박만철 ( Man Chul Park ),심상효 ( Sang Hyo Sim ) 한국산업위생학회 2007 한국산업보건학회지 Vol.17 No.3

This research was performed to evaluate the airborne personal concentration of hazardouse materials during the process of ship construction and surveyed from May 23 to June 30, 2007 in Kyungnam West Distirct, Korea. The subject was 94 ship construction workers exposed to welding fume and respirable particulate. The airborne concentrations of those were compared to Permissible Exposure Limit(PEL) from the Ministry of Labor in Korea. The airborne concentration of 23 samples(48.9%) of welding fumes was less than 5㎎/㎥, that of 16 (34.0%) was between 5 and 10㎎/㎥, and that of 8 (17.0%) was greater than 10㎎/㎥. The airborne concentration of 27 (57.4%) of respirable particulate masses was less than 5㎎/㎥ and the othere are greater than 5 ㎎/㎥. The welding fumes were identified containing the heavy metasl such as Fe, Mn, Zn, Mg, Ca, and Cu. The respirable particulates has similiar tendency with welding fumes in the component of heavy metals. But the concentration of Ca, Cu, Cr, and Ni turned out to be higher in welding fumes. Twenty (42.6%) of the 47 samples of welding fumes were exceeded PEL. In the heavy metals in welding fumes, ten (21.3%) of the 47 samples of Mn were exceeded PEL. Based on the results, the higher airborne hazardous materials were still exposed to wokers in ship construction process. It is suggested that the appropriate engineering control be applied to minimize the exposed cocnetration in ship building processes.

절삭유(Metalworking Fluids)의 발암성에 대한 고찰

박동욱(Dong-Uk Park),윤충식(Chung-Sik Yoon),이송권(Song-Kwon Lee) Korean Society for Precision Engineering 2003 한국정밀공학회지 Vol.20 No.1

Mass Balance 모델을 이용한 신축공동주택의 휘발성유기화합물 발생량 추정

심상효(Sang hyo Sim),김윤신(Yoon Shin Kim),김화선(Hwa-Sun Kim),이철민(Cheol Min Lee),이송권(Young-Man Roh),노영만(Song kwon Lee) 한국실내환경학회 2006 한국실내환경학회지 Vol.3 No.3

This study was performed to estimate the emission rate of volatile organic compounds (VOCs) and to evaluate the risk level affected by indoor air pollutants (IAPs) in 27 new apartments (prior to residence) in Seoul City from December 2004 to March 2005. The indoor air pollutants investigated in this study include formaldehyde, several aromatic VOCs (benzene, toluene, styrene, xylene, and ethylbenzene). All measurements were made based on the standard method of Ministry of Environment in Korea. The indoor concentration levels for benzene, xylene, toluene, ethylbenzene, styrene, and formaldehyde have significant increase trend 5 hours after closing windows and doors. Levels of air pollutants did not exhibit significant difference between living rooms and bedrooms. The air exchange rates by the concentration decay method using SF6 were 0.37 for low floor, 0.32 for middle floor, and 0.75 for high floor. The emission rate showed the highest level in the middle floor and second one in the low floor, when estimated by the IAQ model for benzene, toluene, ethylbenzene, xylene, styrene, and formaldehyde. Considering the above result, it is suggested that the estimation of emission rate be considered when the new apartment is designed and constructed with respect to construction materials to emit low VOCs. Moreover, the related regulation should be established for IAQ management.