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승화결정성장로의 감압속도가 탄화규소 단결정 성장에 미치는 영향
김종표,김영진,김형준,Kim, Jong-Pyo,Kim, Yeong-Jin,Kim, Hyeong-Jun 한국결정학회 1992 韓國結晶學會誌 Vol.3 No.1
단결정 a-SiC성장시 결정성장로의 감압속도가 결정 성장 속도, 결정성, 성장방향에 미치는 영향 을 고찰해 보기 위해서 승화법으로 (001)면 a-SiC 단결정 종자정위에 단결정 a-SiC를 성장시켰다. 결정성장 초기에는 성장로의 빠른 감압 속도에 따라 결정성장속도가 빨라지고 3C-SiC 다결정이 종자정위에 성장하였고, 감압속도를 느리게 한 경우에는 결정성장 속도가 느려지고 6H-SiC 단결정이 성장하였다. 초기에 단결정층이 성장하는 조건 하에서 2시간 성장후의 단면 성장 양상을 보면, 종자정 하단에서 발생하는 낙은 종자정의 연속적 인 승화 때문에 종자정과 초기의 단결정층이 소멸 되고, 종자정이 놓여있던 혹연 도가니의 바닥으로부터 연속적으로 다결정 층이 성장된 것이 관찰되었다. 그러나, 이러한 종자정의 승화 소멸은 초기 성장 후 냉각과정을 거치고 다시 승온시키는 두 단계 공정을 사용함으로써 효과적으로 억제시킬 수 있었다. 이와같은 방법으로 장시간 성장시킨 결정은 6H-HiC 단결정이었으며, (001) 방향으로 성장하였다. a-SiC crystals were grown on the (001) plane of a-SiC seed crystals by sublimation method to find effects of pressure-reduction rate of the crystal growth furnace own the growth rate and orientstion of grown SiC crystals. Pressure-reduction rate at the initial growth stage affected the crystallinity of grown SiC crystals. In case of high pressure-reduction rate, growth rate was high and 3csic polycrystalline was grown on the seed. On the other hand, low pressure-reduction rate caused the growth rate to be slow and 6H-SiC single crystal was grown on the seed. However, even after growing SiC for 2 hours under the condition in which.
도시공원 수공간의 디자인 형태 및 특성 분석에 관한 연구 - 경상남도 도시공원을 중심으로 -
김종표,김용수,임원현,Kim, Jong-Pyo,Kim, Yong-Soo,Lim, Won-Hyeon 한국조경학회 2007 韓國造景學會誌 Vol.35 No.2
This case study offers fundamental data for the research and construction of future of water. It also provides an understanding of the design and characteristics of the existing water bodies in urban parks. This study was begun by conducting field research on the completion of the construction of 67 different urban parks located in the downtown areas of the following cities: Gimhae, Yangsan, Changwon, Masan, and Jinju. The field research was conducted from July to October of 2006. Additional research was performed in July of 2007. Construction trends were examined and the design and characteristics of the types of locations, shapes, scales, materials, and added objects for the enhancement of recreational value of the 31 water bodies constructed in 18 urban parks out of the 67 were analyzed. According to the results of the study, the most common design feature was a fountain that shot up. The bodies of water were designed by using a simple technique in accordance with the basic principles of location, shape, size, materials, and added objects for the enhancement of recreational value, with the exception of a few different factors in the research subjects. In conclusion, it can be recommended that further research be conducted in the consideration and various plans of location, shape, size, materials, and added objects for the enhancement of recreational value of future constructions of water bodies in urban parks in order to offer a more pleasant environment to the users.
공급 측과 투과 측 조건에 따른 $Ba_{0.5}Sr_{0.5}Co_{0.8}Fe_{0.2}O_{3-{\delta}}$ (BSCF) 관형 분리막의 산소투과 특성
김종표,박정훈,이용택,최영종,Kim, Jong-Pyo,Park, Jung-Hoon,Lee, Yong-Taek,Choi, Young-Jong 한국막학회 2011 멤브레인 Vol.21 No.2
$Ba_{0.5}Sr_{0.5}Co_{0.8}Fe_{0.2}O_{3-{\delta}}$ (BSCF) 조성을 갖는 치밀한 관형 분리막은 압출 성형 방법으로 제조하였다. $Ba_{0.5}Sr_{0.5}Co_{0.8}Fe_{0.2}O_{3-{\delta}}$ 관형 분리막의 구조적 특성은 x-선 회절분석기 (XRD)와 전자 주사 현미경 (SEM)을 이용하여 분석하였으며, 상대밀도는 94.10%를 보였다. 산소투과량 분석은 700~$950^{\circ}C$ 범위에서 공급 측과 투과 측의 운전조건에 따라 측정되었다. 공급 측과 투과 측에서 대기 중 공기와 진공펌프를 사용할 경우, $Ba_{0.5}Sr_{0.5}Co_{0.8}Fe_{0.2}O_{3-{\delta}}$ 관형 분리막의 산소투과량은 $900^{\circ}C$에서 1.37 mL/$min{\cdot}cm^2$로 높게 나타났다. Dense tubular $Ba_{0.5}Sr_{0.5}Co_{0.8}Fe_{0.2}O_{3-{\delta}}$ (BSCF) membranes were prepared by extrusion technique. The phase structure of the $Ba_{0.5}Sr_{0.5}Co_{0.8}Fe_{0.2}O_{3-{\delta}}$ membranes was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). Relative density of $Ba_{0.5}Sr_{0.5}Co_{0.8}Fe_{0.2}O_{3-{\delta}}$ tubular membrane was 94.10%. Oxygen permeation was measured at difference operating condition of feed side and permeate side in the temperature range from 700 to $950^{\circ}C$. The oxygen permeation flux of dense tubular $Ba_{0.5}Sr_{0.5}Co_{0.8}Fe_{0.2}O_{3-{\delta}}$ membrane reached maximum 1.37 mL/$min{\cdot}cm^2$ at $900^{\circ}C$ exposed to ambient air (feed side) and vacuum pump (permeate side).
김종표,표대웅,박정훈,이용택,Kim, Jong-Pyo,Pyo, Dae-Woong,Park, Jung-Hoon,Lee, Yong-Taek 한국막학회 2012 멤브레인 Vol.22 No.1
다공성 $La_{0.6}Sr_{0.4}Ti_{0.3}Fe_{0.7}O_{3-{\delta}}$로 코팅된 $Ba_{0.5}Sr_{0.5}Co_{0.8}Fe_{0.2}O_{3-{\delta}}$ 관형 분리막은 압출성형 및 dip coating 방법으로 제조 되었다. 코팅된 관형 분리막의 특성은 X-선 회절분석기(XRD)와 전자 주사 현미경(SEM)을 이용하여 분석하였으며, 분석결과 $2{\mu}m$의 다공성 코팅 층을 갖는 페롭스카이트 구조임을 알 수 있었다. 산소투과량 분석은 $750{\sim}950^{\circ}C$ 범위에서 공급측과 투과 측을 대기 중 공기와 진공으로 하여 수행되었다. 다공성의 $La_{0.6}Sr_{0.4}Ti_{0.3}Fe_{0.7}O_{3-{\delta}}$로 코팅된 $Ba_{0.5}Sr_{0.5}Co_{0.8}Fe_{0.2}O_{3-{\delta}}$ 관형 분리막의 산소투과량은 $950^{\circ}C$에서 $3.2mL/min{\cdot}cm^2$로 코팅되지 않은 분리막보다 높게 나타났으며, 11일 동안의 장기 안정성 실험결과 코팅 층에 의해 안정성이 증가됨을 알 수 있었다. Tubular $Ba_{0.5}Sr_{0.5}Co_{0.8}Fe_{0.2}O_{3-{\delta}}$ membranes with $La_{0.6}Sr_{0.4}Ti_{0.3}Fe_{0.7}O_{3-{\delta}}$ porous coating layer were prepared by extrusion and dip coating technique. XRD and SEM result showed the tubular membrane possessed the perovskite structure and porouscoating layer (thickness= about $2{\mu}m$) in surface. The oxygen permeation test was measured at condition of ambient air (feed side) and vacuum (permeate side) in the temperature range from 750 to $950^{\circ}C$. The oxygen permeation flux of $Ba_{0.5}Sr_{0.5}Co_{0.8}Fe_{0.2}O_{3-{\delta}}$ tubular membrane with $La_{0.6}Sr_{0.4}Ti_{0.3}Fe_{0.7}O_{3-{\delta}}$ porous coating layer reached maximum $3.2mL/min{\cdot}cm^2$ at $950^{\circ}C$ and was higher than non-coated $Ba_{0.5}Sr_{0.5}Co_{0.8}Fe_{0.2}O_{3-{\delta}}$ tubular membrane. Long-term stability test result indicated that the oxygen permeation flux was quite stable during the 11 day.
김종표(Kim, Jong-Pyo),김용수(Kim, Yong-Soo),김동주(Kim, Dong-Joo) 한국교육시설학회 2007 敎育施設 Vol.14 No.2
In modern society, the role of university becomes diversified and the concerns on building construction or landscape architecture considering beautiful landscape and scene are increasing caused by increasing interest on external environment of campus. But relative importance of concerns for the context of landscape architecture in campus is neglected rather than other facilities. So the landscape architecture service could not be conducted well. Therefore the computerization of system or management program will be needed for effective landscape architecture tree management and sufficiency of concerns on continuously increasing landscape architecture in campus. The computerization of landscape architecture tree management will be important roles not only to raise the efficiency of landscape architecture management and the view of outdoor environment but also to increase the competitive power of rapidly changing university environment and the quality of education.
충남 서북부지역의 기업에 효과적인 원격교육 도입방안에 관한 연구 - e-learning을 중심으로 -
김종표 ( Kim Jong-pyo ),이복희 ( Lee Bork-hee ) 인하대학교 교육연구소 2005 교육문화연구 Vol.11 No.-
This study is to suggest how to introduce the e-Learning program into enterprises in north-west Chung-Nam province. This study takes 2 different approaches. 1. Research related documents 2. Survey 200 small and medium enterprises on below subjects - Actual condition of e-Learning program - Futuer plan of introducing e-Learning program Survey shows most of these enterprises understand merit of not being restricted by time and loction, but they are still skeptical about educational efficiency also concern about rather large amount of expense. According to this study, there are two important things to make e-Learning program efficient. First of all, the Strong sponsership of CEO. Second of all, a proper curriculum and an incentive program.
Escherichia coli O111 감염에 의한 용혈 요독증이 동반된 출혈 대장염
김종표 ( Jong Pyo Kim ),한동수 ( Dong Soo Han ),백창희 ( Chang Hee Paik ),정용우 ( Yong Woo Chung ),김진배 ( Jin Bae Kim ),손주현 ( Joo Hyun Sohn ),함준수 ( Joon Soo Hahm ) 대한소화기학회 2005 대한소화기학회지 Vol.45 No.5
Shiga toxin producing E. coli (STEC) may cause severe hemorrhagic colitis followed by hemolytic uremic syndrome (HUS). In Korea, there had been a few case reports of HUS by STEC, mostly due to O157 serotype. The reports of HUS caused by STEC non-O157 sero