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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
趙勝鎬,安鍾國 弘益大學校 科學技術硏究所 1991 科學技術硏究論文集 Vol.1 No.-
The image processing technique has been utilized to extract the information of diagram pictured by CCD camera. In image processing we used the LUT method, filtering technique, connecting cord and signature technique. In order to acquire the information of diagram we have derived an equation for computing the center point, equation for computing the circumference length, equation for computing the area. Especially we have developed a signature differention method to get the summit of diagram. After having applied the image processing technique developed in this paper, we obtained a satisfactory result. We have driven the Rhino XR-Ⅲ robot and XY-plotter using the coordinate of summit of diagram, which respectively have shown the seventy and ninety nine percent accuracy approximately.
안종국,박명호 三陟大學校 2003 論文集 Vol.36 No.-
An experimental study about the effects of temperature and pressure on the burning velocity of gasoline-air, methane-air and methane/hydrogen-air mixtures has been conducted by a closed vessel technique. The experimental results show that the burning velocity of gasoline is slightly higher than that of methane, but their basic behavior of combustion characteristics, positive dependence on temperature and negative one on pressure, is the same, and 20 vol.% addition of hydrogen to methane enhances the burning velocity by about 30%, but does not come to reverse the tendency of pressure dependence to that of pure hydrogen.
안종국 인제대학교 1987 仁濟醫學 Vol.8 No.3
슬개골 부정열(malaignment)에 의한 슬개골 동통이 고식적 치료 방법에 호전되지 않는 경우 외측지대절개술은 간단하고 적은 조작으로 비교적 좋은 결과를 얻을 수 있는 유용한 술식이다. Patellofemoral pain is common, particularly, in active young adult with patellofemoral malalignment and chondromalacia. Lateral retinacular release can be helpful in alleviating resistant patellofemoral pain. Through the procedure, following results were obtained. 1.Main indication for lateral retinacular release was the resistant patellofemoral pain with patellar malalignment. 2.In the patellofemoral joints, preoperatively, average sulcus angle was 136 and congruence angle was +12˚. 3.Of the 6 cases, good to excellent results was achived in 5 cases. 4.Lateral retinacular release is useful procedure for patellofemoral pain.
安淙國 韓國作物學會 1993 Korean journal of crop science Vol.38 No.6
냉수관개가 벼 생육특성, 수량 및 미질관련 형질에 미치는 영향을 검토하기 위하여 작물시험장 춘천출장소 냉수처리포장에서 실시한 시험 결과를 요약하면 다음과 같다. 1. 냉수구에서는 자연구에 비하여 출수가 10~19일 지연되었고 간장과 수장은 17~31% 단축되었다. 수수는 일정한 경향이 없으며 품종간에 반응이 상리하였다. 2. 냉수구에서 영화수는 이삭당 10~35개가 감소되었고 등숙률이 현저히 떨어졌으며, 정조수량은 오대벼 치악벼등이 높은 수량을 나타낸 반면에 백암벼 소백벼 진미벼등은 낮은 수량을 보였다. 고중은 공시품종 모두 냉수구에서 높았다. 3. 현미 완전미율은 냉수구와 자연구간에 일정한 차이가 없었고 오히려 품종간의 변이가 크게 나타났고, 청미율은 자연구에서 많은 경향이며 연색미는 냉수구에서 월등히 높았다. 4. 백미 투명도및 알칼리 붕괴도는 수구쪽에서 높은 경향이며, 아밀로스 함량은 자연구에서 높았다. 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~circC ) 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.
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.