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누적외상성질환 위험 요인의 정량적 평가 및 관리를 위한 점검표 개발 : 자동차 조립 작업을 중심으로
이윤근,김현욱,임상혁,박희석 한국산업위생학회 2001 한국산업보건학회지 Vol.11 No.1
Objectives : This study was designed to develop and standardize a checklist for ergonomic risk factors, and to provide ergonomic guidelines for managing cumulative trauma disorders (CTDs) in automobile assembly lines, Methods : The Checklist for Ergonomic Risk Factors(CERF-1) was developed based on the results of previous studies, and then modified after performing pilot study. Information on the symptoms possibly related with CTDs was obtained using a self-reported questionnaire from 465 automobile assembly workers. Their job conditions were examined to assess risk factors through both direct observation and video analysis. Results : Rate of detecting risky job through CERF-1 was 85.6%, and was similar to that (88.8%) by Occupational Safety and Health Adminstration(OSHA) checklist but higher than that (63.7%) by American National Standards Institute(ANSI) Z-365. Relationship of the exposure scores derived from CERF-1 with levels of symptom was greater (r=0.49) than OSHA(r=0.28) and ANSI Z-365 (r=0.22). Considering the relationship, jobs scoring higher than 16 could be classified as the Risk Job, and lower than 16 as then Low Risk Job. Sensitivity and specificity of the Risk Job were 92.5% and 31.5 %, respectively. Odds ratio (OR) after age adjus-tment was 5.69 (95% confidence interval 3.15-10.29) for the Risk Job, and these ORs were significantly different from those of the Low Risk Job. The exposure scores were quite valid, in that the scores at the main survey were significantly correlated with those at the follow-up survey, as suggested by test-retest(r=0.88) and inter-rate reliability(r=0.80) Conclusions:The CERF-1, developed in this study, will be an efficient tool for evaluation of risk jobs for CTDs in automobile assembly lines, and can be used easily by health care providers.
A case of colovesical fistula complicated by sigmoid diverticulitis
( Yun Hyuk Yim ),( Hyo Keun Lee ),( June Sung Lee ),( Kyung Ah Kim ),( Nam Hoon Kim ),( Tae Jun Song ),( Won Ki Bae ) 대한내과학회 2011 대한내과학회 추계학술대회 Vol.2011 No.1
Colovesical fistula is a rare complication of inflammatory or neoplastic disease, and traumatic or iatrogenic injuries. Among them, sigmoid diverticulitis is the most frequent cause of colovesical fistula. There are few reported cases of the colovesical fistula in Korean literature, that is probably because the left colonic diverticulum is not common in Korea. We present here a case of patient with colovesical fistula complicated by sigmoid diverticulitis. A 66-year-old male patient was transferred to our hospital due to complaining of abdominal pain and mucoid stool. An abdominal and pelvic CT scan revealed diverticulitis and peridiverticular abscess in sigmoid colon. The patient was admitted and treated with intravenous antibiotic agents for four weeks, followed by oral antibiotic therapy. Six weeks after being discharged from the hospital, he was admitted again with complaints of pneumaturia, fecaluria, and dysuria. Follow up CT scan demonstrated fistula between sigmoid colon and bladder dome portion. Under the diagnosis of colovesical fistula due to diverticulitis of sigmoid colon, low anterior resection and partial cystectomy with cystostomy were performed.
ITGA1 polymorphisms and haplotypes are associated with gastric cancer risk in a Korean population.
Yim, Dong-Hyuk,Zhang, Yan-Wei,Eom, Sang-Yong,Moon, Sun In,Yun, Hyo-Yung,Song, Young-Jin,Youn, Sei-Jin,Hyun, Taisun,Park, Joo-Seung,Kim, Byung Sik,Lee, Jong-Young,Kim, Yong-Dae,Kim, Heon WJG Press 2013 World journal of gastroenterology Vol.19 No.35
<P>To evaluate the association between the genetic polymorphisms and haplotypes of the ITGA1 gene and the risk of gastric cancer.</P>
Yim, Hyun-jin,Lim, Hyun-Chang,Hong, Ji-Youn,Shin, Seung-Il,Chung, Jong-Hyuk,Herr, Yeek,Shin, Seung-Yun Korean Academy of Periodontology 2019 Journal of Periodontal & Implant Science Vol.49 No.1
Purpose: This study aimed to evaluate the effects of i) the extent of peri-implant bone defects and ii) the application of bone cement on implant stability with respect to the measurement direction. Methods: In 10 bovine rib bones, 4 implant osteotomies with peri-implant bone defects of various widths were prepared: i) no defect (D0), ii) a 2-mm-wide defect (D2), iii) a 4-mm-wide defect (D4), and iv) a 8-mm-wide defect (D8). The height of all defects was 10 mm. Implant stability quotient (ISQ) values and Periotest values (PTVs) were measured after implant placement and bone cement application. Results: With increasing defect width, decreased ISQs and increased PTVs were observed. Statistically significant differences were found between groups D0 and D8, D0 and D4, and D2 and D8. Prior to bone cement application, inconsistent PTVs were found in group D8 depending on the measurement direction. Bone cement increased the implant stability. Conclusion: Peri-implant bone deficits measuring around 50% of the implant surface compromised implant stability. Clinically, PTVs should be cautiously interpreted in implants with large peri-implant defects due to inconsistent recordings with respect to the measurement direction.
Yun-Keun Lee,Young-Su Ju,Won Jin Lee,Seung Sik Hwang,Sang-Hyuk Yim,Sang-Chul Yoo,Jieon Lee,Kyung-Hwa Choi,Eunae Burm,Mina Ha 환경독성보건학회 2015 환경독성보건학회지 Vol.30 No.-
Objectives: We aimed to assess the radiation exposure for epidemiologic investigation in residents exposed to radiation from roads that were accidentally found to be contaminated with radioactive cesium-137 (137Cs) in Seoul. Methods: Using information regarding the frequency and duration of passing via the 137Cs contaminated roads or residing/working near the roads from the questionnaires that were obtained from 8875 residents and the measured radiation doses reported by the Nuclear Safety and Security Commission, we calculated the total cumulative dose of radiation exposure for each person. Results: Sixty-three percent of the residents who responded to the questionnaire were considered as ever-exposed and 1% of them had a total cumulative dose of more than 10 mSv. The mean (minimum, maximum) duration of radiation exposure was 4.75 years (0.08, 11.98) and the geometric mean (minimum, maximum) of the total cumulative dose was 0.049 mSv (<0.001, 35.35) in the exposed. Conclusions: An individual exposure assessment was performed for an epidemiological study to estimate the health risk among residents living in the vicinity of 137Cs contaminated roads. The average exposure dose in the exposed people was less than 5% of the current guideline.
은행 창구 작업자(VDT 작업자)의 경견완장애 자각 증상 호소율과 관련 요인에 관한 연구
임상혁,이윤근,조정진,손정일,송재철 大韓産業醫學會 1997 대한직업환경의학회지 Vol.9 No.1
The purpose of this study is to investigate the relationship between the self-reported musculoskeletal symptoms and related factors among VDT operators in bank. The subjects were 950 women workers. The characteristics of subjects were 26.6 years of average age, 5.7 years of average VDT use duration and 6.5 hours of daily VDT us time. The results were as follows. The prevalence of self-reported musculoskeletal symptoms more than severe in Likert scale were 51.4%, 43.9% at the shoulder, 38.3%, 31.8% at the lower back, 38.0%, 31.3% at the neck, 31.2%, 25.2% at the upper back, 21.7%, 16.5% at the wrist and 13.6%, 8.8% at the fingers(while on duty, after home-coming). General characteristic variables affecting the musculoskeletal symptoms were married, number of child and daily house-working time. Work-related factors affecting the musculoskeletal symptoms were VDT working career, daily working time, daily VDT use time, VDT use time without rest, daily work-load and regular rest. As the result of the multiple logistic regression analysis, daily working time, daily VDT use time and VDT working career were significant variables accounting for the musculoskeletal symptoms.
이윤근 ( Yun Keun Lee ),임상혁 ( Sang Hyuk Yim ) 한국산업위생학회 2010 한국산업보건학회지 Vol.20 No.3
Recent studies suggest that prolonged standing at work is associated with varicose veins (VV). The objective of this study was to analyze the differences of VV risk in terms of work types in casino dealers and hotel service workers. Symptoms of VV were evaluated using a self-reported questionnaire from 2,092 participants, and muscle fatigue in the lower legs were evaluated using surface electromyography. The shift rate of median frequency in Gastrocnemius was -30.0% among the casino dealers working in prolonged static standing posture, and - 14.3% among the casino dealers sitting during working time. After adjusting age, gender, smoking, and family history of VV, the risk ratio of VV was 3.67(95% CI 2.03-6.59) in groupⅠ(prolonged standing and occasional walking at work), 6.29(95% CI 3.48-11.35) in groupⅡ(prolonged standing, occasional walking and heavy lifting at work), and 8.07(95% CI 4.51- 14.43) in groupⅢ(prolonged static standing at work). In conclusion, prolonged standing at work may be a work related risk factor of VV.