• Proceedings of the Korean Institute of Industrial Safety Conference
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• 1998.05a
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• pp.77-82
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• 1998

The residual strength of a specimen with MSD was investigated experimentally and numerically. The used materials for specimens are 2024-T3 and S50C. In each specimen, one main crack and 4 small cracks are machined by using electrical discharge wire cutting and saw cutting. The residual strengths are measured for 3 cases of crack configurations, and the measured values are compared with the values obtained numerically by using elasto-plastic average uncracked ligament stress link-up criteria.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 1999.10a
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• pp.378-379
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• 1999

최근 전국 각지에서 악취의 민원이 증가함에 따라 이에 대한 대책 수립을 위해 악취 원인의 규명이 중요한 과제로 부각되고 있다. 특히 다양한 산업체가 밀집하고 있어서 발생원이 명확하지 않을 때 악취의 원인 성분의 규명은 발생원의 수색이나 증거로서 활용될 수 있다. 아울러 탈취장치의 성능평가에 있어서는 악취의 성분분석은 필수적인 기술이라 하겠다.(중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.11a
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• pp.83-84
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• 2000

식물은 반휘발성유기화합물(Semivolatile organic compounds : 이하 SOCs)의 지구적인 순환과 먹이 연쇄에 있어서 중요한 역할을 한다. 또한 식물은 대기중 가스상 SOCs을 보유하고 입자상 SOCs를 제거하는 역할을 하기 때문에 대기를 정화하는데 중요한 기능을 한다(Lorber et al, 1993). SOCs 화합물 중 PCBs와 BHCs는 친지질성(lipophilic) 유기염소계 화합물로 식물의 뿌리를 통해서는 흡입되지 않고 대기중에서 식물잎의 표면에 존재하는 지질에 침착되므로 식물잎에 침착된 오염물질은 대기의 농도에 의존한다. (중략)

• Archives of Pharmacal Research
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• v.27 no.1
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• pp.25-30
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• 2004

Combinatorial homoserine lactone mixtures and individual products were obtained from the methionine-functionalized resin in solid-phase synthesis. The four-step process consisting of a coupling step of an N-Fmoc-L-methionine, deprotection of N-Fmoc group, N-coupling with a carboxylic acid, and cleavage reaction through a polymer supported strategy is described. Gas chromatography-mass selective detector (GC-MSD) techniques provide the most powerful methods for identifying both the combinatorial mixtures and individual products.

• 월간산업보건
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• s.281
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• pp.37-48
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• 2011

• RED RIBBON
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• s.83
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• pp.11-13
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• 2009

• KOREAN POULTRY JOURNAL
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• v.52 no.6
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• pp.118-122
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• 2020

• KOREAN POULTRY JOURNAL
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• v.56 no.8
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• pp.126-130
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• 2024

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.23 no.3
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• pp.307-314
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• 2013

Objectives: The aim of this study was to determine the prevalence of symptoms relating to musculoskeletal disorders (MSDs) and investigate the risk factors among researchers at university laboratories. Methods: 209 researchers were included in this study, drawn from 27 laboratories at three universities in Korea. Checklists for MSD symptoms and risk factor assessment were utilized. Results: The symptoms checklist showed reliable results with Cohen's Kappa 0.33-0.56, percent agreement 81.0-96.8%, and correlation coefficient 0.41-0.63. The overall prevalence of MSD symptoms was 68.9%, while the prevalence in specific parts of body were as follows: shoulders (47.6%), lower back (46.9%), neck (46.9%), knees (25.4%), wrists (20.1%), elbows (13.6%). The symptom prevalence among women was higher than among men (OR 2.67, 95% CI 1.37-5.18). Daily exposure time was observed to be a significant risk factor for developing MSD symptoms (OR 2.14-6.07). Conclusions: This study suggested that repetitive pipetting and static work posture are the most significant risk factors for MSD symptoms among laboratory researchers.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.18 no.2
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• pp.141-148
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• 2008

To prevent musculoskeletal disorders(MSD) for dental hygiene students, who will potentially be at high risk of developing MSD while performing oral prophylaxis practice, an MSD prevention education program was designed and was offered to a group of dental hygiene students to find whether the program is effective. Before the program started and three months after the program ended, changes in the students' posture were filmed to observe them. The final subjects for analysis included 30 students in the experimental group and 41 students in the control group. To verify differences between the experimental and the control groups, repeated measures ANOVA was carried out before and after the program. After the education program, the experimental group's RULA scores for neck, left upper arm, right forearm, and wrist, RULA A score on both left and right side, RULA B score on left side, and total RULA score were significantly lowered during the operation on the upper jaw, compared with that of the control group. And, during the operation on the lower jaw, the experimental group's RULA A score, RULA B score, and total RULA score were very significantly lowered. The results of this study suggest the MSD prevention education program is effective in preventing the disorder. Thus, the program can be utilized as an education program for preventing MSDs during dental hygiene students' oral prophylaxis practice and clinical practice.