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조직배양에 의한 무지개송어 장기조직세포의 염색체 기본구조에 관한 연구
정영래,정영길,손진기,김무강,Jung, Yung-rae,Jeong, Young-gil,Son, Jin-ki,Kim, Moo-kang 대한수의학회 1995 大韓獸醫學會誌 Vol.35 No.2
This study was examined chromosome structure of kidney, fin, blood cell, sexual organ that were differently examined chromosome of a good cell activity from organ, medium, staining methods, instruments with rainbow trout 100. And so we obtained following conclusion. 1. The difference from each organ and medium is that a good cell activity of fin, kidney, sexual organ were obtained in TC-199 medium and a good cell activity in TC-199 medium+PHA(5%). 2. In the difference by staining methods, G-banding and C-banding were analyzed by electron microscope or cytoscan. Among them, heterochromatin of centromere analyzed by C-banding. 3. The zygotene and the leptotene were analyzed in this study. 4. Karyotype, heterochromatin and each stage of cell division were clearly analyzed by cytoscan.
전치 가이드베인을 가지는 수중 덕트 프로펠러 주위의 전산 유동 해석
유혜란(Hye-Ran Yu),정영래(Young-Rae Jung),박원규(Wam-Gyu Park) 한국전산유체공학회 2004 한국전산유체공학회지 Vol.9 No.2
The present work solved 3D incompressible RANS equations on a rotating, multi-blocked grid system to efficiently analyze ducted marine propulsor with the interaction of propeller guidevane and annular duct. To handle the interface boundary between the guidevane and the propeller, a sliding multiblock technique based on the cubic spline interpolation was applied. To validate the present code, a turbine flow was simulated and the time-averaged pressure coefficients were compared with experiment. After the code validation, the flowfield around a ducted marine propeller with pre-swirl guidevane was simulated.
Ducted Marine Propeller의 점성유동 수치해석
유혜란(Hye-Ran Yu),정영래(Young-Rae Jung),박원규(Warn-Gyu Park) 한국전산유체공학회 2003 한국전산유체공학회 학술대회논문집 Vol.2003 No.-
The present work solved 3D incompressible RANS equation on a rotating, non-orthogonal multi-blocked grid system to efficiently analyze ducted marine propulsor with rotor-stator interaction. To handle the interface boundary between a rotor and a stator maintaining the conservative property, the sliding multi block technique using the cubic spline interpolation and the bilinear interpolation technique were applied. To validate present code, a turbine flow having rotor-stator interaction was simulated. Time averaged pressure coefficients were compared with experiments and good agreement was obtained. After the code validation, the flowfield around a single-stage ducted marine propulsor was simulated.
안병권,정소원,김지혜,정영래,김선범,Ahn, Byoung-Kwon,Jung, So-Won,Kim, Ji-Hye,Jung, Young-Rae,Kim, Sun-Bum 한국군사과학기술학회 2015 한국군사과학기술학회지 Vol.18 No.3
Recently supercavitating underwater torpedo moving at high speed (over 200 knots) has been interested for their practical advantage of the dramatic drag reduction. Cavitator located in front of the torpedo plays an important role to generate a natural supercavity and control the motion of the object. Supercavity can be created artificially by injection of compressed gas from the rear of the cavitator at a relatively low speed. In this paper, we investigated physical characteristics of artificial supercavities through cavitation tunnel experiments. One of the main focuses of the study was to measure pressure inside the cavity, and examined variation of the gravity effects appearing according to different amount of injected air. It was also found that a stable supercavity could be sustained at injection rates less than that required to form the stable supercavity because of hysteresis effect.