Annals of Occupational and Environmental Medicine

Young Hahn Moon

22 Articles

Factors Associated with Psychoneurobehavjral Outcomes in Workers Exposed to Manganese: Kyoo Sang Kim, Yangho Kim, Youngwoo Jin, Euna Kim, Jeong Sun Yang, Kwi Ryun Kwon, Jae Woo Kim, Jaehoon Roh, Young Hahn Moon; Korean Journal of Occupational and Environmental Medicine 1999;11(2):213-228. Published online June 30, 1999; DOI: https://doi.org/10.35371/kjoem.1999.11.2.213

The risk posed to human health by environmental manganese (Mn) exposure is unknown. The purpose of this study is to establish if subclinical effects related to Mn exposure and examine the factors influencing psychoneurobehaviral outcomes of Mn exposed workers. This study involved 121 male workers of welding, alloy furnace, and manufacturing of welding stick. Study investigations include: a questionnaire covering demographic characteristics, job and exposure history and medical symptoms and conditions, monitoring workplace air for personal exposure to respirable and inhalable manganese, analysis of blood and urine samples. psychoneurobehaviral test(neurobehaviral core test battery (NCTB), signal change on magnetic resonance imaging (MRJ) scans, minimental state and neurological examination). The main results of this study were as follows: 1. Preliminary results showed that, with increasing manganese exposure, neurobehaviral performance was poorer and signal change on MRI scans increased. 2. The results of examination revealed significant relations on psychoneurobehaviral out-comes (neurobehaviral performance, signal change on MRI scans, and neurological features). 3. In multiple regression, age and educational status as demographic variables and exposure level were significantly related to 4neurobehaviral test. Also exposure level and serum Mn concentrations were positively relatel to signal change on MRI scans and neurological features affected by Mn on the brain (signal change). 4. Psychoneurobehaviral outcomes from Mn exposure were related to neurobehaviral performance, signal change on MRJ scans, neurological features and profile of mood states (POMS), and influnced positively with age, alcohol and smoking history, and duration of Mn exposure, negatively with educational status. Serum Mn concentrations in combination with brain MRI scans, and perhaps a battery of neurobehaviral tests, appear to be the best way to monitor excessive exposure to Mn. These results are consistent with our knowledge on Mn action on the brain and are similar to the type of neurobehaviral dysfunction. They suggest that there may be age, educational status, and life style (alcohol and drinking history) differences with chronic environmental exposure. These findings suggest further evaluation, particularly on relationships between Mn exposure, aging, and susceptibility factors.

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A Study on the Total, Particle Size-Selective Mass Concentration of Airborne Manganese, and Blood Manganese Concentration of Welders in a Shipbuilding Yard
Jong Su Park, Pan Gyi Kim, Jee Yeon Jeong
Journal of Korean Society of Occupational and Environmental Hygiene.2015; 25(4): 472. CrossRef
Associations between Airborne Manganese and Blood Manganese in the Korean General Population according to KNHANES 2008-2009
Kyung Sick Jung, Jong Dae Lee, Yong Bae Kim
Journal of Environmental Science International.2013; 22(12): 1589. CrossRef
Neurobehavioral Deficits and Parkinsonism in Occupations with Manganese Exposure: A Review of Methodological Issues in the Epidemiological Literature
Robert M. Park
Safety and Health at Work.2013; 4(3): 123. CrossRef
Olfactory functions at the intersection between environmental exposure to manganese and Parkinsonism
Silvia Zoni, Giulia Bonetti, Roberto Lucchini
Journal of Trace Elements in Medicine and Biology.2012; 26(2-3): 179. CrossRef
Occupational Neurological Disorders in Korea
Eun-A Kim, Seong-Kyu Kang
Journal of Korean Medical Science.2010; 25(Suppl): S26. CrossRef
Exposure-Response Relationship and Risk Assessment for Cognitive Deficits in Early Welding-Induced Manganism
Robert M. Park, Rosemarie M. Bowler, Harry A. Roels
Journal of Occupational & Environmental Medicine.2009; 51(10): 1125. CrossRef
State-of-the-Science Review: Does Manganese Exposure During Welding Pose a Neurological Risk?
Annette B. Santamaria, Colleen A. Cushing, James M. Antonini, Brent L. Finley, Fionna S. Mowat
Journal of Toxicology and Environmental Health, Part B.2007; 10(6): 417. CrossRef
Issues in neurological risk assessment for occupational exposures: The Bay Bridge welders
Robert M. Park, Rosemarie M. Bowler, Donald E. Eggerth, Emily Diamond, Katie J. Spencer, Donald Smith, Roberto Gwiazda
NeuroToxicology.2006; 27(3): 373. CrossRef
Potential occupational risks for neurodegenerative diseases
Robert M. Park, Paul A. Schulte, Joseph D. Bowman, James T. Walker, Stephen C. Bondy, Michael G. Yost, Jennifer A. Touchstone, Mustafa Dosemeci
American Journal of Industrial Medicine.2005; 48(1): 63. CrossRef

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Performance of Neurobehavioral Tests Among Welders Exposed to Manganese: Youngwoo Jin, Yangho Kim, Kyoo Sang Kim, Euna Kim, Young Sook Cho, Yong Chul Shin, Changho Chai, Younghyu Choi, Se Hoon Lee, Young Hahn Moon; Korean Journal of Occupational and Environmental Medicine 1999;11(1):1-12. Published online March 31, 1999; DOI: https://doi.org/10.35371/kjoem.1999.11.1.1

Abstract PDF

To study neurobehavioral effects for manganese fume exposure of welders, we administrated questionnaire about subjective symptom, related with manganese exposure. Neurobehavioral Core Test Battery of World Health Qrganization(NCTB) and finger tapping for 98 welders and 29 non-welding workers. We adopted welding duration as a criterion for exposure assessment, because of the lack of the longitudinal valid data and differences in airborne concentrations of manganese in welding types, such as shielded metal arc and CO2 arc welding. Neurologic, musculoskeletal and concentration symptoms were significantly increased by increase of welding duration. Performance of finger tapping preferred hand, Santa Ana dexterity test preferred hand and correct number of pursuit aiming were significantly decreased by increase of welding duration. These results comparable with previous studies that suggest neurobehavioral test, especially motor test, to be an appropriate tool to detect early neurobehavioral abnormalities related with manganeses exposure.

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Manganese exposure and cognitive performance: A meta-analytical approach
Thomas Vlasak, Tanja Dujlovic, Alfred Barth
Environmental Pollution.2023; 332: 121884. CrossRef
Derivation of an occupational exposure level for manganese in welding fumes
Lisa A. Bailey, Laura E. Kerper, Julie E. Goodman
NeuroToxicology.2018; 64: 166. CrossRef
Neurobehavioral Deficits and Parkinsonism in Occupations with Manganese Exposure: A Review of Methodological Issues in the Epidemiological Literature
Robert M. Park
Safety and Health at Work.2013; 4(3): 123. CrossRef
Neuropsychological effects of low-level manganese exposure in welders
Wisanti Laohaudomchok, Xihong Lin, Robert F. Herrick, Shona C. Fang, Jennifer M. Cavallari, Ruth Shrairman, Alexander Landau, David C. Christiani, Marc G. Weisskopf
NeuroToxicology.2011; 32(2): 171. CrossRef
Occupational Psychiatric Disorders in Korea
Kyeong-Sook Choi, Seong-Kyu Kang
Journal of Korean Medical Science.2010; 25(Suppl): S87. CrossRef
Occupational Neurological Disorders in Korea
Eun-A Kim, Seong-Kyu Kang
Journal of Korean Medical Science.2010; 25(Suppl): S26. CrossRef
Exposure-Response Relationship and Risk Assessment for Cognitive Deficits in Early Welding-Induced Manganism
Robert M. Park, Rosemarie M. Bowler, Harry A. Roels
Journal of Occupational & Environmental Medicine.2009; 51(10): 1125. CrossRef
State-of-the-Science Review: Does Manganese Exposure During Welding Pose a Neurological Risk?
Annette B. Santamaria, Colleen A. Cushing, James M. Antonini, Brent L. Finley, Fionna S. Mowat
Journal of Toxicology and Environmental Health, Part B.2007; 10(6): 417. CrossRef
High signal intensity on magnetic resonance imaging as a predictor of neurobehavioral performance of workers exposed to manganese
Yong Chul Shin, Euna Kim, Hae-Kwan Cheong, Sungil Cho, Joon Sakong, Kyoo Sang Kim, Jung Sun Yang, Young-Woo Jin, Seong-Kyu Kang, Yangho Kim
NeuroToxicology.2007; 28(2): 257. CrossRef
Sequelae of fume exposure in confined space welding: A neurological and neuropsychological case series
Rosemarie M. Bowler, Sanae Nakagawa, Marija Drezgic, Harry A. Roels, Robert M. Park, Emily Diamond, Donna Mergler, Maryse Bouchard, Russell P. Bowler, William Koller
NeuroToxicology.2007; 28(2): 298. CrossRef
Issues in neurological risk assessment for occupational exposures: The Bay Bridge welders
Robert M. Park, Rosemarie M. Bowler, Donald E. Eggerth, Emily Diamond, Katie J. Spencer, Donald Smith, Roberto Gwiazda
NeuroToxicology.2006; 27(3): 373. CrossRef

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A Study on the N-methylformamide Excretion Rate of Workers at Synthetic Leather Factories in Korea: Ki Woong Kim, Byung Soon Choi, Seong Kyu Kang, Young Hahn Moon; Korean Journal of Occupational and Environmental Medicine 1999;11(1):106-112. Published online March 31, 1999; DOI: https://doi.org/10.35371/kjoem.1999.11.1.106

Abstract PDF

This study was conducted to examine the excretion rate of dimethylformamide (DMF) from the workers exposed to DMF. The study was done at two synthetic leather factories located in Kyeonggi-do from the period of May 2 to 30, 1996. N-methyl- formamide (NMF) concentrations in urine were measured and compared by the three exposure level of DMF in air. The mean concentration of the Low (dry and winder part). Moderate (rinsing part) and High (mixing and coating part) exposure group were 3.99+/-3.54. 10.19 +/-5.69 and 32.10+/-7.87 mg/m3 during workshift of 8 hours, respectively. The mean concentration of urinary N-methylforinamide (NMF) were 2.13+/-2.58, 11.16+/-4.98 and 26.24 +/-7.35 mg/g creatinine, respectively. The concentration of NMIF in urine could reach to maximum in 3 hours and was reduced nearly to zero in about 18 hours after exposure to DMF.

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Hepatotoxicity in Rats Treated with Dimethylformamide or Toluene or Both
Ki-Woong Kim, Yong Hyun Chung
Toxicological Research.2013; 29(3): 187. CrossRef
Assessment of correlation between markers of ambient monitoring and biological monitoring of dimethylformamide for workers in synthetic leather manufacturing factories in Korea
Yang In Hwang, Mi-Young Lee, Yun Kyung Chung, Eun A Kim
Analytical Science and Technology.2013; 26(5): 315. CrossRef
Clinical Outcomes of Occupational Exposure to N,N-Dimethylformamide: Perspectives from Experimental Toxicology
Tae Hyun Kim, Sang Geon Kim
Safety and Health at Work.2011; 2(2): 97. CrossRef

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Induction of Hepatic Microsomal Cytochrome P450 by Styrene in Rat: Ki Woong Kim, Sung Keun Chang, Hyo Seok Joung, Jun Yeon Lee, Young Hahn Moon, Sang Shin Park; Korean Journal of Occupational and Environmental Medicine 1997;9(4):604-613. Published online December 31, 1997; DOI: https://doi.org/10.35371/kjoem.1997.9.4.604

Abstract PDF

The effects of styrene on the induction of cytochrome P-450s (P450), (P4501A1/2, P4502B1/2 and P4502El) and activities of other related enzymes were investigated in the male Sprague Dawley rats which were treated with styrene 500 (S1), 1,000 (S2) 1,500 (S3) mg/kg in olive oil intraperitoneally once a day for two days and sacrificed for the preparation of liver microsomes after 24 hrs. 1. The contents of total protein and P450 in the microsomes derived from the styrene treated groups were slightly higher than those from the control group except those from the 53 group (1,500 mg styrene/kg body weight) . The decreases in microsomal protein contents was prominent in the S3 (p<0.05), but the P450 contents was increased significantly in the S2 (p<0.05). 2. The activities of NADPH-P450 and NADH b5 reductase in hepatic microsomes derived from the treated groups were significantly increased in the treated groups(p<0.05). 3. The activities of PROD were also prominently increased with the treatment of styrene except in 53 group, but the activity of EROD was decreased by styrene treatment. The activities of pNPH in the styrene treated groups were higher than that of the control group (p<0.05). 5. Western blotting with monoclonal antibodies against P4502B1/2 isozymes showed the presence of P4502B1/2 in hepatic microsomes from the rats treated with styrene, and the increase in the densities of immunoblots were corelated with the dosages of styrene. The blot densities against P4501A1/2 and P4502El were slightly increased in the styrene treated groups compared with the control group. These results suggested that styrene could primarily induce P4502B1/2 as major and P4501A1/2 and P4502El in minor forms for the metabolism of styrene in rats.

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Hepatotoxicity in Rats Treated with Dimethylformamide or Toluene or Both
Ki-Woong Kim, Yong Hyun Chung
Toxicological Research.2013; 29(3): 187. CrossRef

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Neuropsychiatric Symptoms of Workers Exposed to 2-Bromopropane: Kyeong Sook Choi, Byung Yeol Chun, Jung Sun Park, Yang Ho Kim, Young Hahn Moon; Korean Journal of Occupational and Environmental Medicine 1997;9(2):301-308. Published online June 30, 1997; DOI: https://doi.org/10.35371/kjoem.1997.9.2.301

Abstract PDF

To investigate the impact of 2-bromopropane on neuropsychiatric symptoms, 33 exposed workers and 77 non-exposes workers in electronic company were recruited. Neuropsychiatric symptoms were assessed using self-administered questionnaire. Memory disturbance, concentration disturbance, sleep disturbance, understanding disturbance and acute irritation symptom were more frequent in workers exposed to 2-bromopropane. To investigate the association between 2-bromopropane exposure and neuropsychiatric symptoms, total symptom scores of exposed workers were compared with those of non-exposed workers. Mean value in the exposed workers was significantly higher than that of non-exposed comparisons. The mean value of total symptom score of smokers in exposed workers was significantly higher than that of smokers in non-exposed workers. In multivariate regression analysis, exposure status was significant predictor for total symptom score after controlling the effects of age, sex, education, smoking status and alcohol intake. Above findings suggest that 2-bromopropane was significantly associated with neuropsychiatric symptoms. Therefore, it is recommended that further research with objective assessments and long follow-up should be done to confirm the results of this study.

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Occupational Psychiatric Disorders in Korea
Kyeong-Sook Choi, Seong-Kyu Kang
Journal of Korean Medical Science.2010; 25(Suppl): S87. CrossRef

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Prevalence of Asbestosis in Korean Asbestos Industry: Do myung Paek, Nam Won Paik, Jung Deun Choi, Mi A Son, Jung Gi Im, Won Jin Lee, Young Hahn Moon, Jung Sun Park, Byung Soon Choi; Korean Journal of Occupational and Environmental Medicine 1995;7(1):46-57. Published online February 28, 1995; DOI: https://doi.org/10.35371/kjoem.1995.7.1.46

Abstract PDF

Asbestos industry has been in operation over 60 years in Korea. However, the prevalence of asbestosis has not been yet reported. With rapid turn-over of workers, previous cross-sectional studies of current workers on the job could not find cases with exposures long enough for the development of asbestosis. This study was done to evaluate asbestosis prevalence of those worksites with operation history of more than 20 years. In total, 139 workers from 5 worksites were examined. Asbestos industries covered in the study include 2 asbestos textile, 1 brake lining, and 2 ship repairing worksites. Chest x-ray was taken from all workers and read by two exports familiar with pneumoconiosis classification according to 1980 ILO guidelines. Those with findings compatible with asbestosis were further checked with high resolution computerized tomography (HRCT). Pulmonary function tests were done according to ATS guidelines, and occupational and previous medical history was taken through a standardized interview. Air-borne asbestos was measured according to NI0SH method 7400. The air-borno asbestos concentrations ranged from 0.2-1.3 f/cc for asbestos textile, from 0.7~l.0 f/cc for brake lining, and from 6.3-7.8 f/cc during asbestos removal at ship repairing worksite. Of the 139 workers 25 had abnormal chest radiographic findings, and 10 of them had findings compatible with pneumoconiosis. When work history and current asbestos measurements were accounted, 9 workers who had more than 10 years of asbestos exposure history showed chest radiographic findings of pneumoconiosis with Finally, 4 workers showed finding of pulmonary fibrosis and/or pleural thickening at HRCT, and 2 of them had restrictive lung function changes. The study results showed that, among 139 sutjects, there were 4 (3%) definite asbeatosis cases confirmed with HRCT. The prevalence of probable asbestosis was 7% for 10-14 years of exposure, 13% for 15-19 years of exposure, and 23% for 20 or more years of exposure. The prevalence of compensable asbestosis with abnormal lung function was 4-6% for those with 15 or more years of exposure.

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Sustainable management of hazardous asbestos-containing materials: Containment, stabilization and inertization
Shiv Bolan, Leela Kempton, Timothy McCarthy, Hasintha Wijesekara, Udara Piyathilake, Tahereh Jasemizad, Lokesh P. Padhye, Tao Zhang, Jörg Rinklebe, Hailong Wang, M.B. Kirkham, Kadambot H.M. Siddique, Nanthi Bolan
Science of The Total Environment.2023; 881: 163456. CrossRef
Asbestos Exposure Level and the Carcinogenic Risk Due to Corrugated Asbestos-Cement Slate Roofs in Korea
Eun-Soo Lee, Young-Ki Kim
International Journal of Environmental Research and Public Health.2021; 18(13): 6925. CrossRef
Gastric and rectal cancers in workers exposed to asbestos: a case series
Byeong Ju Choi, Saerom Lee, Iu Jin Lee, Soon Woo Park, Sanggil Lee
Annals of Occupational and Environmental Medicine.2020;[Epub] CrossRef
The Asbestos Ban in Korea from a Grassroots Perspective: Why Did It Occur?
Yu-Ryong Yoon, Kyeong Kwak, Yeyong Choi, Kanwoo Youn, Jinwook Bahk, Dong-Mug Kang, Domyung Paek
International Journal of Environmental Research and Public Health.2018; 15(2): 198. CrossRef
A decade of malignant mesothelioma surveillance in Korea
Soon‐Hee Jung, Hyoung‐Ryoul Kim, Sang‐Baek Koh, Suk‐Joong Yong, Myoung Ja Chung, Chang‐Hun Lee, Joungho Han, Min‐Seob Eom, Sung‐Soo Oh
American Journal of Industrial Medicine.2012; 55(10): 869. CrossRef
Comparison of cancer incidence between production and office workers at a shipyard in Korea: A retrospective cohort study from 1992 to 2005
Kyoung‐Sook Jeong, Yangho Kim, Moon‐Chan Kim, Cheol‐In Yoo
American Journal of Industrial Medicine.2011; 54(9): 719. CrossRef
Occupational and Environmental Asbestos Exposure in Korea
Jung-Wan Koo, Hyoung Ryoul Kim
Journal of the Korean Medical Association.2009; 52(5): 442. CrossRef
Overview of Asbestos Issues in Korea
Hyoung Ryoul Kim
Journal of Korean Medical Science.2009; 24(3): 363. CrossRef
Compensation and Diagnosis of Asbestos Related Disease
Soo-Geun Kim
Korean Journal of Family Medicine.2009; 30(5): 335. CrossRef
Asbestos-related Diseases among Asbestos Textile Factory Workers and Residents Around the Factory
Dong-Mug Kang, Dong-Chul Gu, Kun-Hyung Kim
Journal of the Korean Medical Association.2009; 52(5): 482. CrossRef
Asbestos Problems Yet to Explode in Korea
Domyung Paek
International Journal of Occupational and Environmental Health.2003; 9(3): 266. CrossRef
The Effect of Silica Dust on Ventilatory Function of Foundry Workers
Jung Wan Koo, Chee Kyung Chung, Chung Yill Park, Se‐Hoon Lee, Kang‐Sook Lee, Young‐Man Roh, Hyeon Woo Yim
Journal of Occupational Health.2000; 42(5): 251. CrossRef
Asbestos and non-asbestos fiber content in lungs of Korean subjects with no known occupational asbestos exposure history
Je Yu, Young Hahn Moon, Kiyoshi Sakai, Naomi Hisanaga, Jung Duck Park, Yasuhiro Takeuchi
Environment International.1998; 24(3): 293. CrossRef

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Brain Stem Auditory Evoked Potential and R-R interval Analysis of the Workers Exposed to Trichloroethylene: Seong Kyu Kang, Young Sook Cho, Young Hahn Moon; Korean Journal of Occupational and Environmental Medicine 1995;7(1):111-119. Published online February 28, 1995; DOI: https://doi.org/10.35371/kjoem.1995.7.1.111

Abstract PDF

In order to evaluate the effects of trichloroethylene (TCE) on the central and autonomic nervous system, the brain stem auditory evoked potentials (BAEPs) and the electrocardiographic R-R interval variability (CV(rr)) were measured in three groups of workers (11) working in TCE degreasing process, workers (4) exposed to lead and two groups of workers (12) not exposed to any kinds of neurotoxicants. Two components of the CVrr reflecting parasympathetic activity (C-CV(rsa)) and sympathetic and parasympathetic activities (CCV(mwsa)) were examined. The TCE workers were exposed to TCE at the level of less than 1 hour per week while the degreasing material was changed. There were no differences in the latencies of BAEPS and CV(rr) and the components of the CV(rr) between control and TCE and lead groups. However, two lead workers had the blood lead level of less than 60 g/dl recommended as present biological guideline by the Ministry of Labor, showed the delayed latencies of V5 and I-V in BAEP. This results suggested that intermittent TCE erposure didn't affect the auditory nervous pathway and the autonomic nervous system, however, lead exposure might affect the central nervous system at the level of less than 60 g/dl in blood lead.

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The Relationship between the Occupational Exposure of Trichloroethylene and Kidney Cancer
Inah Kim, Jaehyeok Ha, June-Hee Lee, Kye-mook Yoo, Jaehoon Rho
Annals of Occupational and Environmental Medicine.2014;[Epub] CrossRef

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Studies on Activities of Xenobiotic Metabolic Enzymes in Rats treated with Trichloroethylene: Ki Woong Kim, Seong Kyu Kang, Byung Soon Choi, Jong Seong Lee, Jong Sung Kim, Young Hahn Moon; Korean Journal of Occupational and Environmental Medicine 1994;6(2):323-331. Published online September 30, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.2.323

Abstract PDF: Trichloroethylene (TRI) is one of the most widely used organic solvent in many industries. It is used a degreasing agent, extract and dillution solvents. TRI is metabolized by liver microsomal cytochrome P4SO to reactive intermediates, which are considered responsible for its hepatotoxicity. Cytochrome P450 is a key enzyme in the first step of TRI metabolism resulting in chloral hydrate (CH) formation, which is a rate-limiting step in TRI metabolism. This study was perfomed to find out the change of hepatic cytochrome P450 levels and of electron transport system for P-450 dependent reaction. Intraperitoneal injections of TRI were done to the male Sprague Dawley rats(mean body wights,170+/-10g) in corn oil at the dosage of 150,300,600 mg/kg for 2 days. The results of experiments are following : 1. The contents of microsomal protein, cytochrome P450 and b(5) are tended to be decreased with increasing amount of TRI, but not significantly (p>0.05) . 2. The activity of NADPH-cytochrome P450 reductase is slowly decreased by increasing amount of TRI, but not slgnificantly (p>0.05) . On the other hand, the activity of NADH-b(5) reductase is increased with increasing amount of TRI (p<0.05) 3. The activity of 7-ethoxyresolufin 0-deethylase did not show any critical changes (P>0.05) . This result suggests that the inductive pattern of TRI may not be related to P 450IAl and P450IIB.

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Respiratory Symptoms and Ventilatory Function Impairment of Taxi Drivers: Jong Han Leem, Jaehoon Rho, Kyung Jong Lee, Myung Jo Yuhn, Young Hahn Moon; Korean Journal of Occupational and Environmental Medicine 1994;6(1):134-142. Published online February 28, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.1.134

Abstract PDF: The prevalence of respiratory symptoms and impairments of ventilatory capacity were studied in a group of 74 taxi drivers in Inchon area. As a reference group, 94 office workers of same area, matched with cigarette smoking, were also included in this study. Taxi drivers complained of respiratory symptoms much more than reference group. Those were cough, sputum production, chest tightness and shortness of breath. The ventilatory capacities, FVC (forced vital capacity), FEV(1.0) (forced expiratory volume 1 second), MMF (maximal mid flow) and PFR (peak flow rate), were measured. All measured values of ventilatory capacities of taxi driver were significantly decreased than those of reference group. The rate (56.8%) of ventilatory capacity impairment in taxi drivers was significantly larger than those (14.9%) of reference group, and the most of them were restrictive type impairments. Also, Job variable, prefessional driver or not, was selected as important determinant for ventilatory capacity impairment.

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The study of blood carbon disulfide in rats after oral administration of carbon disulfide: Muyung Hwa Cho, Jae Hoon Roh, Kyung Jong Lee, Chi Nyun Kim, Yong Bong Cho, Young Hahn Moon; Korean Journal of Occupational and Environmental Medicine 1993;5(2):216-222. Published online September 30, 1993; DOI: https://doi.org/10.35371/kjoem.1993.5.2.216

Abstract PDF: No abstract available.

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Effects ethanol and phenobarbital on metabolism of trichloroethylene in rats: Kyung Jong Lee, Jae Hoon Roh, Chi Nyon Kim, Myung Hwha Cho, Bong Suk Cha, Young Hahn Moon; Korean Journal of Occupational and Environmental Medicine 1993;5(1):76-87. Published online February 28, 1993; DOI: https://doi.org/10.35371/kjoem.1993.5.1.76

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No abstract available.

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Assessment of Volatile Organic Compounds in Blood and Urine among Residents around Camp Carroll
Hyun-Sul Lim, Wonho Yang, Geun-Bae Kim, Young-Sung Cho, Young-Sun Min, Kwan Lee, Duk Hee Lee, Young-Su Ju, Sunshin Kim, Jung Heo, Dayoung Jung
Journal of Korean Society of Occupational and Environmental Hygiene.2016; 26(1): 11. CrossRef

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Workers' health status related working environments in small and medium sized industries: Kyoo Sang Kim, Jae Hoon Roh, Kyung Jong Lee, Ho Keun Chung, Young Hahn Moon; Korean Journal of Occupational and Environmental Medicine 1993;5(1):3-14. Published online February 28, 1993; DOI: https://doi.org/10.35371/kjoem.1993.5.1.3

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No abstract available.

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Practice of Health Managers and Workers according to Guidance of Work Environment Management of Specialized Health Management Institution
Yunhee Kim
Journal of Korean Society of Occupational and Environmental Hygiene.2016; 26(2): 198. CrossRef
Effects of health and safety problem recognition on small business facility investment
Jisu Park, Harin Jeong, Sujin Hong, Jong-Tae Park, Dae-Sung Kim, Jongseo Kim, Hae-Joon Kim
Annals of Occupational and Environmental Medicine.2013;[Epub] CrossRef
The Work Environment and Wearing Conditions of Industrial Protective Clothing in Shipbuilding Workshops
Hyun-Sook Bae, Min-Young Kim
Journal of the Korean Society of Clothing and Textiles.2012; 36(5): 512. CrossRef
The Classification of Manufacturing Work Processes to Develop Functional Work Clothes - With a Reference to the Automobile, Machine and Shipbuilding Industries -
Ginah Park, Hyewon Park, Hyunsook Bae
Fashion business.2012; 16(6): 21. CrossRef
Cancer Admission and Mortality in Workers Exposed to Ionizing Radiation in Korea
Yeon-Soon Ahn, Robert M. Park, Dong-Hee Koh
Journal of Occupational & Environmental Medicine.2008; 50(7): 791. CrossRef

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The development of industrial health information management system: Sung Hyun Han, Young Moon Chae, Young Hahn Moon, Jaehoon Roh, Kyung Jong Lee, Myung Wha Cho, Hae Young Min; Korean Journal of Occupational and Environmental Medicine 1992;4(2):181-189. Published online October 31, 1992; DOI: https://doi.org/10.35371/kjoem.1992.4.2.181

Abstract PDF: No abstract available.

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A study on the urinary metabolites of carbon difulfide in rats: Chi Nyon Kim, Yong Bong Cho, Young Hahn Moon, Jaehoon Roh; Korean Journal of Occupational and Environmental Medicine 1992;4(2):133-143. Published online October 31, 1992; DOI: https://doi.org/10.35371/kjoem.1992.4.2.133

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No abstract available.

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Acid-Labile Bound Carbon Disulfide in Whole Blood of Rats as a Biological Indicator for Carbon Disulfide Exposure
Jaehoon Roh, Myunghwa Cho, Chynyon Kim, Kyungjong Lee, Jonguk Won
Applied Occupational and Environmental Hygiene.1998; 13(4): 252. CrossRef

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Effects of workers' health status to the recognition about their work environment: Young Hahn Moon, Chong Yon Park, Kyung Jong Lee, Myung Wha Cho; Korean Journal of Occupational and Environmental Medicine 1992;4(1):81-91. Published online February 29, 1992; DOI: https://doi.org/10.35371/kjoem.1992.4.1.81

Abstract PDF: No abstract available.

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Health hazard of workers potentially exposed to trichloroethylene in the Inchon area: Young Hahn Moon, Jaehoon Roh, Kyung Jong Lee, Chang Iei Song; Korean Journal of Occupational and Environmental Medicine 1992;4(1):14-19. Published online February 29, 1992; DOI: https://doi.org/10.35371/kjoem.1992.4.1.14

Abstract PDF: No abstract available.

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The study of health care standards of noise induced hearing loss: Young Hahn Moon, Kyung Jong Lee, Jae Hoon Roh, Dongchun Shin; Korean Journal of Occupational and Environmental Medicine 1991;3(1):1-10. Published online February 28, 1991; DOI: https://doi.org/10.35371/kjoem.1991.3.1.1

Abstract PDF: No abstract available.

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A Study on the knowledge and Attitude of Workers Concerning Occupational Health: Soo Nam Cho, Young Hahn Moon; Korean Journal of Occupational and Environmental Medicine 1990;2(2):186-198. Published online August 31, 1990; DOI: https://doi.org/10.35371/kjoem.1990.2.2.186

Abstract PDF: To acquire more useful data for the improvement of industrial health servicies, the knowledge-attitude study was carried out by questionnaire on 264 workers in Incheon area from November, 1989 to March, 1990. The results of this study were as follows; 1. Almost half of workers responded that their health status in poor. 2. The Knowledge of respondents on occupational health showed considerable difference depending upon duration of work in their company. Genverally, the respondents with long duration of work tend to be higher in knowldedge score than those with short duration of work. 3. Most of the workers (82.6%) thought that creating better working environment and improvement of working condition would be most efficient way for protecting the workers' health. 4. Degree of labor union activity, duration of work, participation for labor union were revealed as major determinants of attitude for industrial health. 5. Most of workers (91.1%) responded that they would like to participate in health education program if available, and monthly education would be adequate for them. The contents of program which the workers preferred were early detection and treatment of occupational disease.

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Analysis of Medical Charges in Industrial Accident Compensation Insurance System: Young Hahn Moon, Bong Suk Cha, Jaehoon Roh, Myung Keun Lee, Kyung Jong Lee, Se Jin Chang; Korean Journal of Occupational and Environmental Medicine 1990;2(2):153-165. Published online August 31, 1990; DOI: https://doi.org/10.35371/kjoem.1990.2.2.153

Abstract PDF: A recent increase in hospital cost in Industrial Accident Compensation System has caused an issue. Especially the many problems in assessing and paying hospital cost have made necessary improvement measures on this. For this purpose the study analyzed 179,442 medical bills for industrial accident patients during 1986~1988. And various annual statistic data, references and documentations are also reviewed. The results of this study were as follows: 1. The average days for medical treatment per injury decreased depending upon hospital grade in the order of clinic, hospital, and general hospital, and the average hospital charges per injury decreased in the order of general hospital, hospital and clinic. 2. The inpatients' leading injury was traumatic amputation of fingers, and the open wound of fingers came to leading injury among the outpatients. The proportions of 10 leading injuries among inpatients and outpatients were 42.7% and 49.2% respectively. 3. As a consequence of the analysis of average medical charges, fractures of neck of femur in inpatients, and intervertebral disc disorders in outpatients were obtained as the most prevalent injuries. The coal workers' pneumoconiosis and injury to nerve roots and spinal plexus were most prominent injuries with repect to the days for medical treatment. 4. According to annual days for medical treatment, fracture of tibia and fibula was the most prevalent in inpatients, and sprains and strains of back was the most prevalent in outpatient. Traumatic amputation of fingers and other 10 leading injuries has a 42.6% share of total inpatients' hospital charges, and fracture of phalanges of hand and other 10 leading injuries possessed 53.4% of total outpatients' hospital charges. 5. Multiple regression analysis revealed that length of hospital stay, number of revealed that length of hospital stay, number of radiologic examinations, duration of operation, age, and others were the major determinants of total hospital charges. A comparision with medical insurance and car insurance for hospital charges and days for treatment showed 2-4 times higher than medical insurance, but showed 0.4~1.0 times lower than medical insurance and car insurance for daily treatment charges.

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A Comparative Study of Ihe Hospital Charge of Long-term and Short-term inpatient in the Industrial Accident Compensation Insurance System: Kyung Jong Lee, Young Hahn Moon, Bong Suk Cha; Korean Journal of Occupational and Environmental Medicine 1990;2(1):1-12. Published online February 28, 1990; DOI: https://doi.org/10.35371/kjoem.1990.2.1.1

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The purpose of this study was to compare the hospital charges of long-term and those of short-term inpatients Insured by the Industrial Accident Compensation Insurance System. This study analysed 1,597 medical bills of injured workers emitted to and discharged from all hospitals in Korea in the period between March 1, 1988 and May 30, 1989. The 308 workers hospitalized for more than 50 hospital days were classified as long-term inpatients, and the others as short-term inpatients. The sampling method employed was 25% systematic sampling. The results of this study were as follows; 1. The average length of stay for long-term inpatients was 95.1 days, and 20.7 days for short-term inpatients, 2. Long-term inpaiients' main diseases were multiple injury and fracture. Fracture of the lower extremities and feet prevailed, 3. Daily hospital charges were higher in the long-term inpatients than in the short-term inpatients. 4. Total charges decreased depending upon hospital grade in the order of general hospital, hospital, and clinic. Daily average hospital charges were the same regardless of hospital grade. 5. The proportions of long-term Inpatients admitted to general hospitals, hospitals, and clinics were 46.1%, 23.4%. and 30.5% respectively, and those of short-term patients were 33.2%, 24.1%, and 42.7% respectively. 6. Multiple regression analysis revealed that the length of hospital stay, hospital grade, treatment results and patient's age were the major determinants of hospital charges.

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K-means Cluster Analysis on Care Status of Injured Workers with Stroke According to Discharge Disposition Patterns
Goo Joo Lee, Byung-Mo Oh, Keewon Kim, Sang Yoon Lee, Sewoong Chun, Tai Ryoon Han
Brain & Neurorehabilitation.2011; 4(2): 132. CrossRef

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Health Hazards of Plating Workers: Jung Gyun Park, Jaehoon Roh, Kyung Jong Lee, Young Hahn Moon; Korean Journal of Occupational and Environmental Medicine 1989;1(2):218-227. Published online November 30, 1989; DOI: https://doi.org/10.35371/kjoem.1989.1.2.218

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Chromic acid has widely been used for decorative chromium plating, hard chromium plating, and surface treatment of raw materials. However, its strong oxidizing action has been found to cause corrosion of mucous membranes and skin, such as the nasal septum, conjunctiva, face, and hand skin. Excessive exposure to chmmic acid has frequently caused ulceration and perforation of a nasal septum. These ulcerations are painless and confined to the cartilaginous portion at the lower anterior part of the septum known as Kisselbach's or Little's area. This study was undertaken to investigate the general characteristics, actual conditions of the working environment and the prevalence rate of nasal septal perforation due to inhalation of chromic acid mist in workers employed at plating industries. This study was conducted on 627 workers who were exposed to chromic acid from July to November 1988. The results were summarized as follows: 1. The mean age of workers with septal perforation was 26 years and the mean working duration was 84 months. 2. The prevalence rates of nasal septal perforation and ulceration of mucosa of the plating workers were 31.7% and 10.5% respectively. 3. The significant variables related with occurrence of nasal septal perforation were age of workers, working duration, kinds of plating, efficiency of local ventilation and performance of health examinations. From the above results, occurrences of nasal septal perforation in plating workers were affected by the duration of chromium exposed work and state of the working environment. Prevention of occupationsl diseases fri plating workers will be accomplished by implementation of an industrial health care system which includes thorough health checkups for workers and regular environmental monitoring.

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Occupational Diseases in Korea
Seong-Kyu Kang, Eun A Kim
Journal of Korean Medical Science.2010; 25(Suppl): S4. CrossRef

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A Study on the Industrial Accident of Steel Workers: Young Hahn Moon, Jaehoon Roh, Dongchun Shin, Myung Sun Lee, Soo Nam Cho; Korean Journal of Occupational and Environmental Medicine 1989;1(1):61-68. Published online February 28, 1989; DOI: https://doi.org/10.35371/kjoem.1989.1.1.61

Abstract PDF: To investigate the relationship between physical health of workers and industrial accidents, a case-control study was carried out using matched samples of 87 injured steel industry workers and 87 non-injured steel industry workers. One group of people who experienced industrial accidents more than two times were case, and the other group of people who matched the type of work and duration of employment were control. We surveyed questionnaire between July 20, 1988 and July 22, 1988. The results were as follows: 1. The average age of injured workers was 39 years, and non-injured workers was 38 years. Duration of employment of injured workers was 8.4 years and non-injured workers was 8 years. 2. Visual acuity under 1.0 were 24.4 percent in injured workers and 19.5 percent in non-injured workers. Hearing threshold over 40 dB were 77.1 percent in injured workers and 60.9 percent in non-injured workers. 3. As for the Fugamachi classification method, 22.9 percent of injured workers and 20.8 percent of non-injured workers were group III(suspected neurotics). 4. As for the item of CMI(Cornell Medical Index), injured workers were higher rates than non-injured workers in the item of C(cardiovascular system), M(inadequency), O(anxiety), P(sensitivity), Q(anger), and R(tension). 5. Especially, injured workers who had more than three times were higher in the item of C(cardiovascular system), M(inadequency), N(depression), P(sensitivity), Q(anger), R(tension) than non-injured workers.

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