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김상혁,김도향,이종수,박찬경,Kim, S.H.,Kim, D.H.,Lee, J.S.,Park, C.G. 한국현미경학회 1996 Applied microscopy Vol.26 No.2
Amophization and decomposition behaviour in $Mg_{62}Cu_{26}Y_{12}$ alloy prepared by melt spinning method and wedge type metal mold casting method have been investigated by a detailed transmission electron microscopy. Amorphous phase has formed in melt-spun ribbon. In the case of the wedge type specimen, however, the amorphous phase has formed only around the tip area within about 2 mm thickness. The remaining part of the wedge type specimen consists of crystalline phases, $Mg_{2}Cu\;and\;Cu_{2}Y$. The supercooling for crystallization behaviour of the amorphous $Mg_{62}Cu_{26}Y_{12}$ alloy, ${\Delta}T_x$ has been measured to be about 60 K. Such a large undercooling of the crystallization bahaviour enables formation of the amorphous phase in the $Mg_{62}Cu_{26}Y_{12}$ alloy under the cooling rate of $10^{2}K/s$. The amorphous $Mg_{62}Cu_{26}Y_{12}$ has decomposed into crystalline phases, $Mg_{2}Cu\;and\;Cu_{2}Y$ after heat treatment at $170^{\circ}C\;and\;250^{\circ}C$.
김경수,김상혁,이갑수,유정희,황민우,이준희,고병희,김효정,이시우,김종열,문영식,이의주,Kim, Kyung-Su,Kim, Sang-Hyuk,Lee, Gab-Su,Yoo, Jung-Hee,Hwang, Min-Woo,Lee, Jun-Hee,Koh, Byung-Hee,Kim, Hyo-Jung,Lee, Si-Woo,Kim, Jong-Yoel,Moon, Young-S 사상체질의학회 2007 사상체질의학회지 Vol.19 No.3
1. Objectives This study focuses on the Revision and Translation of the Mongolian's Sasang constitution Diagnosis Questionnaire (SDQ-M) 2. Methods 03'SDQ's questionnaire analysis study have been performed based on the absolutely diagnosed group of 423 cases who have respond to the Sasang constitution Diagnosis Questionnaire (SDQ) from June to November, 2003. 3. Results and Conclusions Revised 05'SDQ-M's traits, which result from on the basis of 03'SDQ's questionnaire analysis study results and socio-cultural understanding via Mongolian physical constitution diagnosis as well as Mongolian translators' interchange, are as follows. (1) 05'SDQ-M is mainly adjusted in terms of external appearances and the nature of illness symptoms. (2) 05'SDQ-M's physical constitution questionnaires are equally adjusted. (3) 05'SDQ-M is re-used, deleted, or created on the basis of 03'SDQ's questionnaire analysis results. (4) 05'SDQ-M is translated to be easy for Mongolians.
복합구동방식을 적용한 열펌프 시스템의 성능 특성에 관한 실험적 연구
김상혁(S. H. Kim),김지영(J. Y. Kim),박윤철(Y. C. Park) 한국동력기계공학회 2004 한국동력기계공학회 학술대회 논문집 Vol.- No.-
To improve heating performance of the heat pump in winter season, refrigerant heating device was applied to conventional heat pump. The heating process of the refrigerant was started at the heating capacity doesn't enough to the heating load requirement of the conditioning space or the discharge temperature of the air goes down to below 40℃ which is criterion for comfort of the occupants in the conditioning space. The refrigerant heating has new concept of auxiliary heating device for heat pump in winter. In this study, the system performance was analyzed through experimental study of the proposed system and parametric study was conducted to improve the COP and control strategies.