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Safety Evaluation of Fire Resistant Extruded Panel for Partition Wall System
최덕진,김진만 한국건축시공학회 2012 한국건축시공학회지 Vol.12 No.6
While the extruded cement panel has many advantages compared to drywall, it has limited applicability in buildings due to its low fire resistance. However, an extruded panel in which the fire resistance has been dramatically enhanced through the addition of a-hemihydrate gypsum is expected to become widely applied as a partition wall or interior material for buildings. To ensure its applicability, certain safety requirements for use, such as the leaning load by residents, the impact by indoor articles, and the fire, need to be taken into consideration. The purpose of this study is to review the impact load resistance, horizontal load resistance, and fire resistance as required safety properties for the partition wall and interior materials of the extruded panel that includes a-hemihydrate gypsum. The results of this study show that the impact load resistance of the extruded panel that includes a-hemihydrate gypsum achieves SD grade for industrial buildings, and the horizontal impact load resistance achieves HD grade for public buildings. In addition, it provides fire-resistance for approximately 7 minutes longer than the existing extruded cement panel. Based on this result, it is confirmed the extruded panel incorporating a-hemihydrate gypsum has adequate safety properties for use as partition wall or interior material.
기내 서비스 환경에 대한 승무원의 인식이 동기부여 및 서비스 지향성을 매개로 하여 서비스 제공행동에 미치는 영향에 관한 연구
최덕진,김문선,김기웅,박성식,Choi, Duk Jin,Kim, Mun Sun,Kim, Kee Woong,Park, Sung Sik 한국항공운항학회 2013 한국항공운항학회지 Vol.21 No.4
In-flight service, depending on the perceptions of service satisfaction because ever turns into a variable, which enables service providers the flexibility of a variable in the end flight service to suit your needs to providing comprehensive and proactive services of the crew will be motivated. In addition, the service provider's motivation to work in a confined space on board the flight service characteristics in-flight service will be a major impact on the environment. This service-oriented environment, in-flight service and motivation in order to verify the impact on services in Cape factors as independent variables and the dependent variable service-oriented multi-regression analysis was performed. As a result, the motivation of the crew and the crew of the service-oriented, with a voluntary service crew services dependent variable parameters that affect the behavior of the acts. Services and service-oriented motivation Cape factors significantly influence both the irradiated while the impact on voluntary service and results verification service aesthetics, cleanliness, and physical service environment, only the voluntary services of the crew a positive effect on that the effects were investigated.
산업부산물을 이용한 LEC압출성형패널의 모듈화 패널 적용성 평가
최덕진,김한봄,유상열 한국폐기물자원순환학회 2015 한국폐기물자원순환학회지 Vol.32 No.4
Nowadays, we are witnessing all the industrial structures being reorganized on the axis of the carbon dioxide technology to solve the problem of global warming. Therefore, there is need for various approaches even in the construction material industry to realization of the reduction of greenhouse gases and the recycling. Thus, this study sought to apply low energy binder material manufactured with industrial by-products to the extruded panels and develop a composite panel through the modularization of the insulator and the extruded panel. Results are as follows. Regarding the physical properties, the LEC panel had a lower flexural strength with 1.0 N/mm2 than the plain panel, while showing no less absorption rate, percentage of water content, density and compression strength than the plain panel. Panels and insulation attachment was found suitable for B Bond's XPS. It is found that B's glue for XPS is appropriate for putting together the panel and the insulator. As for the thermal transmission coefficient, the LEC panel was lower with 0.384 W/mK than the plain panel but the difference with the composite panel was a mere 0.047 W/mK indicating a similar thermal property to that of the plain composite panel.
최덕진,김태흥 대한피부과학회 2002 大韓皮膚科學會誌 Vol.40 No.11
Plantar fibromatosis is characterized by a nodular fibrous proliferation arising within the plantar aponeurosis. The tumor may be asymptomatic, but symptoms commonly include a painful mass, difficulty in fitting shoes and tenderness while weightbearing. Occasionally palmar and plantar fibromatosis affect the same patient. We report a case of plantar fibromatosis with Dupuytren's contracture in a 40-year-old man.