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박두용 ( Doo Yong Park ),강명성 ( Myung Sung Kang ),박재영 ( Jae Young Park ),김미경 ( Mi Kyung Kim ),최보율 ( Bo Yul Choi ),김연수 ( Yeon Soo Kim ) 대한스포츠의학회 2020 대한스포츠의학회지 Vol.38 No.3
Purpose: The purpose of this study was to investigate whether obesity indicators are mediated in the association between muscle strength and inflammation levels, and further confirm the association between muscle strength level by sex and age and inflammatory levels. Methods: In this study, 3,234 adults living in rural areas were surveyed from 2007 to 2015 and the data was finally analyzed on 2,149 adults. To identify that obesity indicators are mediated in relation to the association between relative grip strength and C-reactive protein (CRP) level, odds ratio (OR) and 95% confidence interval (CI) were calculated using logistic regression analysis (p<0.05). Results: As confounding variables were adjusted, the odds ratio for high inflammatory conditions was lower at a high (OR, 0.58; 95% CI, 0.40-0.85) or medium (OR, 0.64; 95% CI, 0.46-0.90) level of relative grip strength than a low level of relative grip strength. However, there were no significant results if the body fat percentage was added for the confounding variable. When the association between relative grip strength and inflammatory conditions was divided by sex, for women, the odds ratio about high inflammatory conditions was gradually decreased as the relative grip level increased (medium level: OR, 0.55; 95% CI, 0.35-0.87; high level: OR, 0.49; 95% CI, 0.30-0.82). The association of relative grip strength with inflammatory conditions was shown differently in age groups. Conclusion: In conclusion, improvement of muscle strength is a factor that can lower the level of inflammation, and it is important to lower the level of inflammation that can cause cardiovascular disease through resistance exercise differentiated by age and sex.
회수기간을 고려한 기존건축물의 외피 및 열원설비 리모델링 최적 설계안 선정에 관한 연구
윤경(Yun, Gyeong),박두용(Park, Doo-Yong),윤갑천(Yoon, Kap-Chun),김영민(Kim, Young-Min),김영섭(Kim, Young-Sup),김강수(Kim, Kang-Soo) 한국건축친환경설비학회 2016 한국건축친환경설비학회 논문집 Vol.10 No.2
In this study, we proposed remodeling alternatives with building envelope and plant systems which impact on heating and cooling energy consumption in existing building. We performed cost analysis of the alternatives, and presented the remodeling guideline of existing buildings based on these analyzed data. The maximum energy-saving rate was up to 47.4% using commercially available windows, insulations, heating and cooling plants, and, the payback period is 49.3 year. So, it can be said that it is not an economical way to achieve more than 50% of energy saving rate with change of building envelope system and plant system. Replacement of plant system is more efficient way to reduce energy consumption and cost addition compared with replacement of building envelope systems. Therefore, we should consider the plant systems primarily, and the building envelope systems secondarily in remodeling of the existing building.
유기용제용 시료채취기 개발을 위한 활성탄 성능검정에 관한 연구
배야성 ( Ya Soung Bai ),박두용 ( Doo Young Park ),임대성 ( Dai Soung Lim ),박병무 ( Byung Moo Park ) 한국산업위생학회 2005 한국산업보건학회지 Vol.15 No.1
Adsorption capacity for the charcoal were tasted in this study to verify the performance of them for the use of the sampling media in industrial hygiene field. Two set of experiments were conducted. The first experiment was to test performance of the tested charcoal tube that were assembled in the laboratory with the use of the GR grade charcoal. The other tests were investigate the adsorption capacity of the charcoal tested in this study and charcoals embedded in the commercial charcoal tubes. Known air concentration samples for benzene, toluene, and o-xylene were prepared by the dynamic chamber. 1. At low air concentration levels (0.1×TLV), there was no significant differences between the tested charcoal tubes and the SKC charcoal tubes. This implies that there is no defect with the adsorption capacity of the charcoal. 2. At high concentration with 60 minutes sampling, the breakthrough were found only in the tested charcoal while no breakthrough were shown in the SKC charcoal. 3. From the breakthrough tests for the charcoal, the micropore volume(Wo) were calculated by the curve fitting with the use of Dubinin/Radushkevich(D/R) adsorption isotherm equation. The calculated values were 0.687cc/g for SKC, 0.504cc/g for Sensidyne, and 0.419cc/g for the tested charcoal(Aldrich). 4. Adsorption capacities were obtained from the isotherm curves shown adsorption capacities at several levels of the challenge concentration. All range of the air concentration concerned in industrial hygiene, the SKC charcoal showed approximately two times of adsorption capacity compared to the tested charcoal.