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양생방법에 따른 타일 선붙임 공법의 접착특성에 관한 실험적 연구
김우상,공민호,안무영,박병근,김성식,정상진 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1
The objectives of the present study is to solve problems in PC tile before-fixing method using ordinary concrete by adopting the liquefaction method in manufacturing PC to which the tile before-fixing method is applied, and to provide basic information for the practical use of the PC tile before-fixing method, which uses high workable concrete, through manufacturing a complex body based on the optimal mix proportion.
디젤분진이 백서 뇌에 미치는 영향 : Nitric Oxide 및 Nitric Oxide Synthase 아형 발현
박선아,장안수,이보람,박정호,양광익,이태경,박춘식,성기범,안무영 순천향대학교 2006 Journal of Soonchunhyang Medical Science Vol.12 No.1
Background: The possible neurotoxic effect of diesel exhaust particles (DEP), a particulate material from an automobile engine and toxic air pollutant, has been suggested. However, the investigations about it have been rare. Objectives: To examine the possible harmful effect of the inhaled DEP on nervous system we focused on the expression of nitric oxide synthase (NOS) isofonns and nitric oxide (NO) level in the rat brain. Methods: The morphological analysis was performed using neuronal and microglial markers eight days after DEP exposure through nasal cannula-route. In addition, the expression of three NOS isoforms was evaluated by western blot. Nithte and nitrate, a major NO metabolites, were measured using Griess method. Results: We did not find any morphological changes after DEP exposure in terms of the expression of neuronal and microglial markers. And the expression of inducible NOS, neuronal NOS, and endothelial NOS was not altered. There was no change in any of the level of nitrate and nitrite, major NO metabolites. Conclusion: In contrast to the response of lung to DEP, the brain did not show any changes in the level of NOS isoforms, nitrate, or nitrite in this model, It suggests that short-term DEP inhalation may not result in morphological change and alter NO pathway in the brain.