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이성진(S . J . Lee),황규춘(K . C . Hwang),최강덕(K . D . Choi),이학교(H . K . Lee),신영수(Y . S . Shin),한재용(J . Y . Han) 한국축산학회 1995 한국축산학회지 Vol.37 No.3
This study was performed to analyze genetic characteristics of Korean Native Ogol Chickens compared with various breeds of chickens including Korean Native Yellow Chickens, White Leghorns and Rhode Island Reds. For DIVA fingerprinting, we collected blood samples from each of 10 individuals per breeds and obtained the genomic DNA. The genomic DNA samples were digested with restriction enzymes(Hinf I, Hcre III. etc.) and hybridized with various probes(Jeffreys` probes 33.15, 33.6, and M13) after Southern transfer. Probe 33.1 gave only a few unresolvable bands, however, probe 33.6 and M l3 detected a large number of bands and was thought to be the desirable probes for the analysis of genetic characteristics for various breeds of chickens. The use of pooled DNA enabled us to significantly reduce the number of DNA samples for estimation of genetic relationships among breeds. Furthermore, the results of DFP prepared from pooled DNA were similar to those of DFP prepared from individual DNA. In this analysis, KNOC was estimated to be a highly inbred line (band sharing $gt; 0.69), and to be closest in genetic distance to KNYC than any other bred.
이성진(S.J. LEE),문창호(C.H. Moon),김성훈(S.H. Kim) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12
Hot strip mill consists in reheating furnace, roughing mill, finishing mill, laminar cooling bed and coiling station. The mechanical properties are determined by the temperature control accuracy during heating, rolling and cooling of hot-rolled materials in hot rolling process. In order to obtain high quality of the dimension and the shape of hot coils, the deformation of hot-rolled materials and dynamic control of the rolling mill must be evaluated. In this paper, we introduced the three dimensional deformation analysis for hot-rolled materials during a roughing process, shearing simulation to eliminate the bar crop by shearing machine. And we suggested the three dimensional multi-bodies dynamics finite element model to clarify the vibration mechanism of four high hot rolling mills. It can fast and accurately the entire system of actual mills.