크론병에 대한 CoPPLX의 방어효과에 대한 연구

이호학,김유림,문창기,이재일,양병윤,김종수,이정민,정재혁,안석진,박상준,김윤권,김소연,김영중,조민구,최영자,장성조 圓光大學校 醫科學硏究所 2005 圓光醫科學 Vol.20 No.1

아파트 家事作業空間의 構成實態와 使用者評價에 따른 改善方向에 관한 硏究

윤정근,권영민 慶南專門大學 1998 論文集 Vol.26 No.1

대단위 병렬컴퓨터 시스템 노드구조 설계를 위한 워크벤치(SKYLAB)의 개발

윤현진,육은정,노권형,황대준 成均館大學校 科學技術硏究所 1993 論文集 Vol.44 No.1

Building the simulation environment of massively parallel computer systems has been recognized as a better approach over the experimentation on real machines to study extensively their architectural behaviours at a minimum cost. In this paper, we introduce a parallel processing workbench SKYLAB being implemented on DE C5000/25 and SPARCI workstations for design of node architectures featuring optimal organization for massively parallel processing. For the through analysis of the features of architectures in mind, the SKYLAB comes with thress major components: the compilerbackend translating single-threaded codes into their equivalent multithreaded codes, the node architecture emulator incopperating target CPU for program execution, and the graphic use interface for easy interpretation and expedating the analysis of the statitistics from the simulation runs. The design experience of the node architecture of the DAVRID multithreaded parallel processing computer using the SKYLAB examplifies how much effictively to make experiment on parallel simulations using this integrated toolset.

韓國民家建築에 表現된 地域性에 관한 硏究 : 南東海岸地方의 民家型을 中心으로

윤정근,권영민 경남정보대학 1998 論文集 Vol.26 No.1

靑少年 問題의 再照明

尹寬重 조선대학교 교육연구소 1991 교과교육연구 Vol.13 No.-

완충 용액의 유산 농도와 pH가 법랑질의 재광화에 미치는 영향

권중원,서덕규,송윤정,이윤,이찬영 大韓齒科保存學會 2008 Restorative Dentistry & Endodontics Vol.33 No.6

There are considerable in vitro and in vivo evidences for remineralization and demineralization occurring Simul-taneously in incipient enamel caries. In order to "heal" the incipient dental caries, many experiments have been carried out to determine the optimal conditions for remineralization. It was shown that remineralization is affected by different pH, lactic acid concentrations, chemical composition of the enamel, fluoride concentrations, etc. Eighty specimens from sound permanent teeth without demineralization or cracks, 0.15 mm in thickness, were immersed in lactic acid buffered demineralization solutions for 3 days. Dental caries with a surface zone and subsurface lesion were artificially produced. Groups of 10 specimens were immersed for 10 or 12 days in lactic acid buffered remineralization solutions consisting of pH 4.3 or pH 6.0, and 100, 50, 25, or 10 mM lactic acid. After demineralization and remineralization, images were taken by polarizing microscopy (×100) and micro-computed tomography. The results were obtained by observing images of the specimens and the density of the caries lesions was determined. 1.As the lactic acid concentration of the remineralization solutions with pH 4.3 was higher, the surface zone of the carious enamel increased and an isotropic zone of the subsurface lesion was found. However, the total decalcification depth increased at the same time 2.In the remineralization solutions with pH 6.0, only the surface zone increased slightly but there was no significant change in the total decalcification depth and subsurface zone. In the lactic acid buffer solutions with the lower pH and higher lactic acid concentration, there were dynamic changes at the deep area of the dental carious lesion. 본 연구의 목적은 유산 완충 용액의 pH및 유산 농도 변화가 법랑질에서 인공 우식 병소의 재광화 양상에 미치는 영향을 평가하기 위함이다. 유산 완충 용액을 이용하여 법랑질을 탈회시키고, 유산의 농도가 100, 50, 25, 10 mM이고 pH가 4.3인 네 가지 재광화 용액 (Group 1, 2, 3, 4)에 10일, pH 6.0인 네 가지 재광화 용액 (Group 5, 6, 7, 8)에 12일간 처리한 후 무기질의 양적 변화를 편광 현미경에서 얻은 상에서의 탈회 깊이의 변화, 우식 표면층 깊이의 변화로 측정하였다. 또한 micro-computed tomography (micro-CT)를 이용하여 탈회 후와 재광화 후를 촬영하여 얻은 상으로부터 lesion부위의 density를 비교하였다. 1. pH 4.3에서 유산 농도가 증가할수록 우식 표면층의 증가와 표층하 탈회부 중 심층부의 isotropic zone등의 재광화 현상을 보이나, 전체 탈회 깊이 역시 증가하였다. 2. pH 6.0에서 우식 표면층에 국한된 재광화 현상을 보이고, 전체 탈회 깊이는 변화가 없었다. 이상의 실험 결과로 미루어 포화도가 일정한 유산 완충 용액으로 재광화 유도시 pH가 낮고 유산의 농도가 높을수록 표면으로부터 심층부 동역학적 변화에 더 영향을 주었으며, micro-CT를 이용한 우식 병소부위의 density 확인을 통해 무기질의 침착과 방출 현상을 객관적으로 평가할 수 있었다.

사회 인구학적 변인과 부모의 스포츠참여에 따른 자녀의 체육학습 태도

권윤정,김경숙 이화여자대학교 동작과학연구소 2004 이화체육논집 Vol.8 No.-

The main object of this study is to find out how socio-demographic variable and parents participation in sports affect the physical education learning attitude of students. Furthermore, this reports primary purpose is to provide new data and materials for future physical education classes. To achieve such a study aim, the subjects students(518) were chooses in the 2 grader middle schools located on Seoul, classifying in to Gangnam and Gangbuk. The statistics employed this study are the frequent analysis, t-test, One-Way ANOVA and Scheff test. In light of the above research method and process, the following are the analysis results. First, according to the socio-demographic variable(with the exemption of the age of parents) each low primary factors perception, interest, confidence, concentration, and self regulating of physical education learning attitude showed significant difference. Secondly, parents participation in sports greatly influenced the physical education learning attitude(perception, interest, confidence, concentration, and self regulating) of students showed significant difference.

600합금의 미세조직 변화 및 SCC거동에 미치는 Ce 첨가의 영향

권오철,이용선,임연수,정만교,김정수 대한금속재료학회 2005 대한금속·재료학회지 Vol.43 No.1

High purity model alloys with major composition Ni-15Cr-9Fe-0.03C (600CEO) and Ni-15Cr-9Fe-0.03C-0.04Ce (600CE4) were produced. Using these model alloys the effect of alloying element Ce on the SCC behavior of Alloy 600 was evaluated in a caustic solution. To obtain carbides precipitated on grain boundaries, the thermal treatment was performed on both the solution annealed model alloys. Microstructural examinations using SEM and TEM EDX showed that the same structural carbides, Cr_(7)Cc₃, were precipitated on both the alloys and no significant difference in the amount of Cr depletion along grain boundaries was observed between the two model alloys. However, it was shown that the coverage of grain boundary carbides was higher in the Ce-bearing alloy (600CE4). The SCC susceptibility of the alloys was investigated in 40%NaOH solution at 315℃. Being evaluated in terms of the maximum crack depth, the SCC susceptibility of the alloy turned out to be reduced by the addition of Ce. The increased resistance to the SCC in the alloy 600CE4 was considered to be attributable to the increased coverage of grain boundary carbides. (Received September 30, 2004)

기종성 방광염 1예

마성권,나명윤,박종욱,고정희,염충호,김수완,김남호,최기철 全南大醫大 2001 전남의대학술지 Vol.37 No.2

뇌성마비 아동에서 대동작기능평가(GMFM)와 보행의 시공간적 변수와의 관계

이정림,조상현,권오윤,이영희 한국전문물리치료학회 2001 한국전문물리치료학회지 Vol.8 No.1

This paper presents the relevance between GMFM and the spatiotemporal parameters of gait in children with cerebral palsy. Twenty-one chidren (73.11±30.06 months) with cerebral palsy participated in this study, GMFM was performed and spatiotemporal parameters of gait were measured by foot print gait analysis. A correlation analysis was used to investigate the correlation between GMFM scores and spatiotemporal parameters of gait. A linear regression analysis was employed to find how much each gait spatiotemporal parameters could be predicted from GMFM scores. The total GMFM scores was significantly correlated with walking speed, cadence, and stride length. Dimensions D (standing) and E (walking, running, and jumping) were more significantly correlated with gait spatiotemporal parameters than dimensions A (lying and rolling), B (sitting), and C (crawling and knee1ing). The GMFM scores were useful for predicting spatiotemppral parameters. However, it is difficult to predict the status of gait development using GMFM scorers because GMFM scores and gait spatiotemporal parameters are only measured as quantities not qualities. In the field, it is easily found that many children with cerebral palsy are unable to walk in any way. Consequently, gait analysis cannot be performed in many casks. Therefore, it is more reasonable to investigate the influence of GMFM on spatiotemporal parameters, rather than vice versa.