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SWNT 투명박막히터의 열성능 평가를 위한 자유대류 열전달 해석
곽호상(H.S. Kwak),이성은(S.E. Lee),박경석(K.S. Park),김경진(K. Kim) 한국전산유체공학회 2009 한국전산유체공학회 학술대회논문집 Vol.2009 No.4
A computational investigation is conducted on free convection from a thin plate having a surface heat source. The thermal configuration simulates the recently-proposed transparent film heater made of a single-walled carbon nanotube film on a glass substrate. The Navier-Stokes computations are carried out to study laminar free convection from the heater. Parallel numerical experiments are performed by using a simplified design analysis model which solve the conduction equation with the boundary conditions utilizing several existing correlations for convective heat transfer coefficient. Comparison leads to the most suitable boundary condition for the thermal model to evaluate the performance evaluation of a transparent thin-film heater.
하지홍,이성은,탁연빈,김종봉 한국축산학회 1998 한국축산학회지 Vol.40 No.6
The prototypes of physical characteristics in the breeds of Korean Native dog were reviewed. Sapsaree and Jindo dog were medium sized, but Sapsaree was 5 ㎏ heavier and 6 cm higher than Jindo dog on the average. The dominant coat color of Jindo dog and Chejudo dog was white or yellow, but that of Sapsaree was black or yellow. Sapsaree showed higher degree of variation in the tone of main color than Jindo dog. Most of the medium sized dog breeds in the Far East Asia had erect ears, upward tails and short coat. Jindo dog and Chejudo dog showed those characteristics of them, while Sapsaree had dropped ears and long coat. Appearance frequency of dew claw in Jindo dog and Chejudo dog was different from that in Sapsaree, the former was 4% and the latter was 18.3%. Fluctuations of blood cell number and blood protein contents were reviewed by different conditional variations such as age, sex and coat color in Jindo dog and Sapsaree. Blood types in DEA (dog erythrocyte antigen) system of the dog breeds showed extreme values that were different from the values of the European dogs. Phylogenetic relationships of the Asian dog breeds were compared by using the blood protein polymorphism. Jindo dog, Chejudo dog and Sapsaree showed close relationships among them.
하지홍,김경석,이성은 한국축산학회 1999 한국축산학회지 Vol.41 No.6
To investigate the genetic diversity and structure of Korean native dog populations, blood protein polymorphism, mtDNA sequence variation and microsatellite loci of them were analyzed. Blood protein polymorphism analysis was found to be useful for the understanding of genetic structure of the populations. However, the analysis of mtDNA sequence variation could not be used for the purpose. Microsatellite loci analysis showed the high values of heterozygosity and low values of genetic distances of Korean dog populations which were different from those of the Japanese and European dogs. Heterozygosity and average values of allele number of Jindo-dog, Akita dog and Grey hound were as follows ; 0.7 and 6.11 of Jindo-dog, 0.56 and 3.88 of Akita dog, 0.36 and 3.3 of Grey hound.