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진동형 히트파이프를 이용한 이중진공관 태양열 집열기의 성능 평가
손길재(Gil-Jae Son),김종수(Jong-Soo Kim),하수정(Su-Jung Ha),정방호(Bang-Ho Jung) 대한설비공학회 2010 대한설비공학회 학술발표대회논문집 Vol.2010 No.6
This study represents the heat collecting performance of the evacuated solar collector using the pulsating heat pipe. In this study, the important thing is collection efficiency of the evacuated solar collector. The evacuated solar collectors with the shape of the heat pipe were investigated in the same operating condition for a outdoor experiment equipment. The experimental conditions are as follows ; The charging ratio of working fluid was 110% of evaporation section volume. The inclination angle was 35˚from the ground. The mass flow rate is 1 ㎏/min. The working fluid is 142b.
진동형 히트파이프를 이용한 도로융설 시스템 개발에 관한 연구
손길재(Kil-Jae Son),우재호(Jae-Ho Woo),김종수(Jong-Soo Kim) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5
Many car accidents are happened on the road frequently due to heavy snow and water freezing in the winter. In order to resolve this problems, we are spending a lot of money and manpower. This study is performed to reduce the cost and manpower by the problems. A study on the snow melting and deicing system by pulsating heat pipe is about road facilities to keep surface temperature of the road higher than freezing point of water for melting the snow accumulated on it. The pulsating heat pipe is located under paved road at a certain depth and pitch and operated automatically and manually. This study shows the optimized pitch and depth of the pipe under paved road. to get the best performance.
온리약인 부자, 건강, 육계, 오수유의 면역조절효과 비교
손길현,신상우,권영규,김상찬,박종현,Son, Gil-Hyun,Shin, Sang-Woo,Kwon, Young-Kyu,Kim, Sang-Chan,Park, Jong-Hyun 대한동의생리학회 2005 동의생리병리학회지 Vol.19 No.3
This study was carried out to investigate the comparison of immunomodualtory effects of water-extracted Aconiti lateralis Preparata Radix(PR), Zingiberis Rhizoma(ZR), Cinnamomi Cortex(CC) and Evodiae Fructus(EF). The parameter examined to assess apparent immunomodulatory effect of the water-extracted PR, ZR, CC and EF included the regulation of Nitric oxide (NO). Also, ZR and EF represent the expression of Th1/Th2 type cytokine, the change of B cell phenotype. The water-extracted PR, ZR, CC and EF inhibited NO production and iNOS protein expression in LPS stimulated RAW 264.7 macrophage cells. In the Th1 and Th2 cytokine expression, the water-extracted ZR and EF induced IL-2, IFNr and IL-10 mRNA gene expression. Therefore, it seems that the water-extracted ZR and EF have a inducing effect of Th1 and Th2 type cytokines. In the Flow cytometry analysis, the water-extracted ZR and EF changed B cell phenotype (CD45R/B220), did NOT in PR and CC. The water-extracted PR, ZR, CC and EF have a reducing effect of immune suppression cause by Methotrexate (MTX), an agent of immune suppression. These results suggest that the immunomodulatory effects of the water-extracted ZR and EF may be, in part, associated with the inducing IL-2 and IFNr mRNA gene expression In and regulation of NO production in macrophage cells.