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장방형 용기내 자성유체의 Benard유동에 대한 전열 제어 특성에 관한 연구
안종국,서이수,박길문 한국유체기계학회 2004 한국유체기계학회 논문집 Vol.7 No.4
This study deals with the Benard Flow of Magnetic Fluids in a rectangular cavity which the ratio between height and width is 1 : 4 and the base side or left side is a heating face while other sides are to be cooling faces. When Magnetic field was equally impressed, considering the internal rotation of the elementary ferromagnetic particle, we found the following result from the numerical analysis of the GSMAC algorithm applied to the equation of the magnetic fluid. Benard flow is controlled by intensity and direction of magnetic fields, and critical point appears when especially magnetic field with a heating base and side area near H=-7000 and H=-10000 is applied
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장방형 용기내 자성유체의 Benard유동에 대한 전열 제어 특성에 관한 연구
안종국,서이수,박길문,Ahn, Jong-kug,Seo, Lee-Soo,Park, Gil-Moon 한국유체기계학회 2004 한국유체기계학회 논문집 Vol.20 No.2
This study deals with the Benard Flow of Magnetic Fluids in a rectangular cavity which the ratio between height and width is 1 : 4 and the base side or left side is a heating face while other sides are to be cooling faces. When Magnetic field was equally impressed, considering the internal rotation of the elementary ferromagnetic particle, we found the following result from the numerical analysis of the GSMAC algorithm applied to the equation of the magnetic fluid. Benard flow is controlled by intensity and direction of magnetic fields, and critical point appears when especially magnetic field with a heating base and side area near H=-7000 and H=-10000 is applied.
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안종국,이창수 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.2
Purpose: The purpose of this study is to provide the general guidence of treatment of recurrent patella dislocation and subluxation. Materials and Method: We studied retrospectively 24 patients who underwent the operation for the recurrent patella dislocation and subluxation from september 1997 to august 2002. The procedures were lateral retinacular release, medial reefing and proximal and distal realignment surgery. The clinical evaluation was graded by Crosby and Insall's criteria and radiological parameters were post operative congruence angle(CA) and patellofemoral joint degeneration. Result: In clinical evaluation, 9 patients showed excellent result, 16 patients good result and 3 patients fair to poor result. Among the 3 patients who showed fair to poor result, there was chronic synovitis in one patient. So we did arthroscopic irrigation and debridement. After that, Symptom improved, Congruence angle(CA) changed average 20.4 degrees to 12.3 degrees. Conclusion: Age and Q angle are factor in deciding the procedures of treatment of recurrent patella dislocation and subluxation. Also it is very helpful in deciding the further procedures to evaluate the patella tracking in operation filed artnroscopically.
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인장대 강선 고정술을 이용한 제5 중족골 기저부 골절의 수술적 치료
안종국,정형진,배서영,박지용,Ahn, Jong-Kuk,Chung, Hyung-Jin,Bae, Su-Young,Park, Ji-Yong 대한족부족관절학회 2011 대한족부족관절학회지 Vol.15 No.1
Purpose: To evaluate the clinical and radiological results of internal fixation with tension band wiring for the fracture at the base of fifth metatarsal bone. Materials and Methods: From January 2008 to December 2009, 15 cases with displaced fracture at the base of fifth metatarsal were analyzed and average follow up period was 13.8 months. Lawrence classification was used to classify fracture type. We evaluated clinical results by American Orthopedic Foot Ankle Society (AOFAS) midfoot score and radiological results by union time. Complications was also checked. Results: According to classification, zone I fracture were 11 cases and zone II fracture were 4 cases. Bony union was achieved in all cases after 7 weeks. In the final follow-up, average AOFAS score was 94. There were no complications except hardware irritation. Conclusion: Satisfactory results were obtained after tension band wiring for the fifth Metatarsal base fracture in zone I fracture or comminuted zone II fracture for which it is not easy to be fixed with screw.
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안종국,박명호,김민주 三陟大學校 産業科學技術硏究所 2002 産業科學技術硏究論文集 Vol.7 No.3
This study is an investigation for the ADS optimum design by using FEM. We write out program which express ADS perfectly and reduce the required time for correcting of model to the minimum in solution and manufacture result. We complete algorithm which can plan optimum forming of model by feedback error information in CAE. For that, we draw up ADS program which modeling rachet wheel by using visual LISP and telegraph to ANSYS, structural solution program, we can solve stress solution. Then we correct model by feedback date obtaining in solution process, repeat course following stress solution again and do modeling rachet wheel for optimum forming. That is our aim. As a result of experience, we can develope automatic design program using Visual LISP and exhibit ADS as modeling third dimension CAD for optimum design. Also, we develop optimum design algorithm using ADS and FEM. In rachet wheel, greatest equivalence stress originates in key groove corner and KS standard is proved the design for security.
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냉수관개(冷水灌漑) 가 벼 생육 , 수량 및 미질(米質) 에 미치는 영향
안종국 한국작물학회 1993 한국작물학회지 Vol.38 No.6
This experiment was carried out at Chuncheon substation, Crop Experiment Station to investigate the effect of cold water irrigation on the growth and grain yield of rice in 1990. Irrigation of cold water(17℃) delayed 10 to 19 days of heading, and reduced about 17 to 31% of plant height in terms of culm and panicle length. Number of panicle per plant was decreased and /or increased by cold water irrigation. Cold water irrigation reduced spikelet number per panicle and percent of filled grain. Grain yield was increased but, straw weight was decreased according to water temperature gradient from inlet to outlet. There was varietal differences in head rice recovery by cold water treatment. In general the dark brown and /or black colored kernel increased at cold water inlet but decreased percent of green kernel. Alkali digestible value increased and amylose content decreased at cold water inlet.
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