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수중 콘크리트 구조물을 위한 광물질 혼화제를 첨가한 수중불분리성 콘크리트의 특성
원종필,김완영,임경하,박찬기 한국농공학회 2002 한국농공학회논문집 Vol.44 No.6
Recently the use of the antiwashout underwater concrete with the antiwashout admixture is increased considerably. Antiwashout underwater concrete is quite different in concept from conventional underwater concrete. By mixing an antiwashout admixture with concrete, the viscosity of the concrete is increased and its resistance to segregation under the washing action of water is enhanced. The aim of this research is to evaluate the fundamental characteristics and permeability of antiwashout underwater concrete with fly ash and blast-furnace slag. Test Results of antiwashout underwater concrete with fly ash and blast-furnace slag fluence can provide its excellent fundamental characteristics and resistance of permeability
강승훈,이지혁,최경하,임병용,김관회 대한약리학회 2008 The Korean Journal of Physiology & Pharmacology Vol.12 No.4
Heat shock proteins (HSPs) serve as molecular chaperones and play a role in cell protection from damage in response to stress stimuli. The aim of this article is to investigate whether HSP22 affects IL-8 expression in vascular smooth muscle cells (VSMCs), and which cellular factors are involved in the HSP-mediated IL-8 induction in that cell type in terms of mitogen activated protein kinase (MAPK) and transcription element. Exposure of aortic smooth muscle cells (AoSMCs) to HSP22 not only enhanced IL-8 release but also induced IL-8 transcript via promoter activation. HSP22 activated ERK and p38 MAPK in AoSMCs. HSP22-induced IL-8 release was inhibited by U0126, but not by SB202190. A mutation in the IL-8 promoter region at the binding site of NF-κB, but not AP-1 or C/EBP, impaired promoter activation in response to HSP22. Delivery of IκB, but not dominant negative c-Jun, lowered HSP22-induced IL-8 release from AoSMCs. These results suggest that HSP22 induces IL-8 in VSMCs via ERK1/2, and that transcription factor NF-kB may be required for the HSP22-induced IL-8 up-regulation.
수중 콘크리트 구조물을 위한 광물질 혼화제를 첨가한 수중불분리성 콘크리트의 특성
원종필 ( Won Jong-pil ),임경하 ( Lim Kyung-ha ),박찬기 ( Park Chan-gi ),김완영 ( Kim Wan Yong ) 한국농공학회 2002 韓國農工學會誌 : 전원과 자원 Vol.44 No.6
Recently the use of the antiwashout underwater concrete with the antiwashout admixture is increased considerably. Antiwashout underwater concrete is quite different in concept from conventional underwater concrete. By mixing an antiwashout admixture with concrete, the viscosity of the concrete is increased and its resistance to segregation under the washing action of water is enhanced. The aim of this research is to evaluate the fundamental characteristics and permeability of antiwashout underwater concrete with fly ash and blast-furnace slag. Test Results of antiwashout underwater concrete with fly ash and blast-furnace slag fluence can provide its excellent fundamental characteristics and resistance of permeability.
통계적 분석에 의한 수중불분리성콘크리트 배합인자의 특성
원종필 ( Won Jong Pil ),임경하 ( Lim Kyung Ha ),박찬기 ( Park Chan Gi ) 한국농공학회 2001 韓國農工學會誌 : 전원과 자원 Vol.43 No.3
Recently the use of the antiwashout underwater concrete with the antiwashout admixture is increased considerably. Antiwashout underwater concrete is quite different in concept from conventional underwater concrete. By mixing an antiwashout admixture with concrete, the viscosity of the concrete is increased and its resistance to segregation under the washing action of water is enhanced. The aims of this research is statistically evaluated to mix proportion factor of antiwashout underwater concrete. Experiment was performed to analyze the influence variables(cement, water, and antiwashout admixture) on fundamental characteristics of antiwashout underwater concrete. The influence variables can be considered for use in a wide range of underwater work where their have statistically significant effect on the characteristics(fluidity, filling ability, resistance to washout, etc.) of antiwashout underwater concrete.