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공동주택의 재건축과 리모델링의 비교분석을 위한 모델구축방안
정용식,이상범 한국건축시공학회 2005 한국건축시공학회지 Vol.5 No.4
This paper illustrates a comparative analysis on the economic efficiency of remodeling method that is one of major factors in setting more desirable standards and proposes to utilize LCC calculation techniques in generating a required budget for more effective quantity-based analysis that is both objective and effect. Rather than comparing only the initial cost of two different methods, it seems through to compare their entire life cycle cost that includes any repair and reconstruction/ remodeling expenses, thus generate overall quantitative analysis in objective perspective
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정용식,김진우 한국섬유공학회 2000 한국섬유공학회지 Vol.37 No.4
The dispersion behaviour of disperse dyes under the dyeing condition was assessed by turbidity ratio, which increased with decreasing particle size of dyes. The four different dye dispersions of C.I. Disperse Blue 56 and C.I. Disperse Yellow 54 were prepared by milling presscake for 1 and 25 hours. The turbidity ratio of the dispersions having large particle size rapidly increased above 10$0^{\circ}C$, but that of metastable form decreased during cooling step. Whereas those of small particle size decreased as dyeing proceeded. It could be monitored that the particle size of dyes not adsorbed by polyester fiber were enlarged during dyeing process. The dyes with small particle size showed lower exhaustion value than larger ones at first, but eventually showed higher values above 13$0^{\circ}C$.
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중추신경계(中樞神經系)에서 숙지황(熟地黃)의 항염증작용(抗炎症作用)에 관(關)한 연구(硏究)
정용식,강형원,류영수,Jung Young-Sik,Kang Hyung-Won 대한한방신경정신과학회 1999 동의신경정신과학회지 Vol.10 No.2
We investigated whether an aqueous extract of Rehmannia glutinosa steamed root (RGAE) inhibits secretion of inflammatory cytolanes from primary cultures of mouse astrocytes. RGAE dose-dependently inhibited the $TNF-{\alpha}$ secretion by astrocytes stimulated with substance P (SP) and lipopolysaccharide (LPS). Interleukin-1 (IL-1) has been shown to elevate $TNF-{\alpha}$ secretion from LPS-stimulated astrocytes while having no effect on astrocytes in the absence of LPS. We therefore also investigated whether IL-1 mediated inhibition of $TNF-{\alpha}$ secretion from primary astrocytes by RGAE. Treatment of RGAE to astrocytes stimulated with both LPS and SP decreased IL-1 secretion to the level observed with LPS alone. Moreover, incubation of astrocytes with IL-1 antibody abolished the synergistic cooperative effect of LPS and SP. These results suggest that RGAE has an antiinflammatory activity on the central nervous system curing some pathological disease states.
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유복모,박홍기,정용식 연세대학교 산업기술연구소 1982 논문집 Vol.14 No.2
This study is on the analysis of the site for the fortress by means of photogrammetry. Analysis of the historical site No.57, Nam Han Mt. fortress, was done by means of aerial photogrammetry which has high accuracy in plane coordinate system and terrestrial photogrammetry which has high accuracy in height coordinate system. The size and degree of slope of the fortress was analysed with reference to the topographic map which had been plotted by aerial photogrammetry. Terrestrial camera P 32 was used to survey and plot the Southern gate region which made it possible to acquire the quantitative data for fortress analysis.
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카티온화에 의한 폴리에틸렌테레프탈레이트/면 혼방직물의 염색
정용식,이학노 한국섬유공학회 1996 한국섬유공학회지 Vol.33 No.9
Dyeing properties of poly(ethylene terephthalate) and cotton modified with cationic agents were investigated. N-methylol compounds such as N-methylolacrylamide(NMA) are highly reactive toward cotton in the presence of Lewis acid catalysts. Modified cotton with NMA has the pendant double bond as a site for Michael addition to various amines such as ethylene diamine(ED), methylamine and so on. NMA is expected to react with terminal hydroxy group of PET, and ED causes the aminolysis of ester groups of PET main chain besides the modified PET with NMA. Therefore PET and cotton modified with NMA and ED have acid dyeing sites and cotton had a good dyeing property for acid dye even at low concentration of ED. High concentration of ED was needed for acct dyeable PET in exchange for the physical properties of the fiber. PET modified with ED have amino functional groups which act as ligands to transition metals and form metal chelate resin. This enables PET to be dyed with 1:1 metal complex dye.
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