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시각 장애인의 예방적 건강검진, 건강행태와 정신 건강에 대한 분석
심종우,한승한,Jong Woo Shim,Seung Han Han 대한안과학회 2012 대한안과학회지 Vol.53 No.12
Purpose: To better understand visual disabilities via preventative health examination, health behavior, and psychological health. Methods: The preventative health examination, health behavior, and psychological health records of 4,724 participants over the age of 40 who completed the third Korean National Health and Nutrition Examination Survey (KNHANES III) were analyzed. The participants were divided into 3 groups for analysis: subjects without disabilities, subjects with disabilities but without visual disabilities, and subjects with visual disabilities. The unadjusted mean and the adjusted mean for which socioeconomic factors were adjusted were calculated. Results: In the preventative health examination there were no differences between the 3 groups except for a statistically significant increase in the number of cholesterol check-ups in the visual disability group. In the health-related behavior analysis, lifetime smoking and routine physical activity were similar between the visual disability and no disability group, however, these factors were greater in the disability without visual disability group. The analysis of psychological health revealed that major depressive symptoms, suicidal ideation, suicidal attempts and psychological consultations were greater in the disability without visual disability and the visual disability groups compared to the participants without disability. However the overall number of psychological consultations was low. Conclusions: There was no difference in the frequency of preventative health examinations between each group. However, there was an increase in the prevalence of psychological problems in subjects with visual disabilities compared to subjects without disabilities and subjects with disabilities but without visual disabilities. Thus, ophthalmologists should consider psychological aspects when dealing with patients with visual disturbances.
습식 생산된 재생 잔골재를 사용한 콘크리트의 특성에 관한 연구
심종우(Shim Jong-Woo),유명열(Yu Myoung-Youl),이세현(Lee Sea-Hyun) 대한건축학회 2004 大韓建築學會論文集 : 構造系 Vol.20 No.12
The recycled fine aggregate produced by a existing method is not recommended to use recycled fine aggregate for production of quality concrete, considering that it increases the water demand of fresh concrete and lower the strength and probably the durability of hardened concrete. But, the recycled fine aggregate is becoming increasingly important for alternative of natural fine aggregate faced shortage. Therefore, in this study, I proposed a production method which are able to produce recycled fine aggregates for quality concrete with a classifier, and analyzed the quality of the recycled fine aggregate and comprehended the properties of recycled aggregates mortar using the recycled fine aggregate to review whether it can be put to practical use for concrete. In the experiment, recycled fine aggregate is substituted for natural fine aggregate the rate of 0, 25, 50, 75 and 100% each. The results of the study are as follows.<br/> 1) The air content is increased irregularly according to the increasing of substitutive ratio<br/> 2) The slump and loss of slump with time since mixing are decreased irregularly according to the increasing of substitutive ratio<br/> 3) The compressive strength of the mortar using the recycled fine aggregate tends to be increase until 25~50% substitution ratio, and than reduced with the increase of the mixing ratio of recycled fine aggregate<br/> Based on the above results, it is concluded that the recycled fine aggregate through the wet production process can be used as fine aggregate on condition that the substitution ration is under 50%.
ASR의 시멘트 열원 활용를 위한 킬른내 염소제어기술 개발
권우택(Kwon, Woo-Teck),김수룡(Kim, Soo-Ryong),김영희(Kim, Young-Hee),심종우(Shim, Jong-Woo),유태욱(Yoo, Tae-Wook),오세천(O, Se-Cheon) 한국신재생에너지학회 2007 한국신재생에너지학회 학술대회논문집 Vol.2007 No.06
폐 자동차에서 발생하는 폐차잔재물(Automobile shredder Residue)의 시멘트 열원 활용을 위하여 시멘트 킬른에서의 염소제어기술을 확립하고자 하였다. 이를 위하여 본 연구에서는 ASR 발생공정에서 발생량이 가장 많은 light fluff 시료를 채취하였으며, 채취한 시료의 염소함량 분석 및 이를 토대로 하여 시멘트 킬른에서의 염소함량 순환거동을 예측하였다. 아울러 킬른내 염소제어설비의 안정적 가동을 위하여 기존 염소제어 시스템인 태평양 시멘트회사 시스템과 우베 시멘트회사 시스템의 장단점을 비교분석하여, 시멘트 킬른 내부에 함유되어있는 다량의 염소성분을 제어할 수 있는 기술개발 방향을 제시하고자 하였다.