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전승정,김태헌,류민선,오다연,송명은,이신아,류재인,김혜인,문일환,유권 이화여자대학교 의과학연구소 2011 EMJ (Ewha medical journal) Vol.34 No.2
The causes of pyogenic liver abscess has been known as biliary tract disease or intrabadominal infection but the large proportions of the patients has no apparent underlying disorders. Recently colonic mucosal lesions were reported in patients with cryptogenic liver abscess and it has been suggested that colonic mucosal break may play a role in developing liver abscess in otherwise healthy patients. We experienced a patient of severe recurrent liver abscess complicated with endophthalmitis only 3 months after successful treatment of initial cryptogenic liver abscess and a polypoid colon cancer was discovered by chance. It seems prudent to proceed colonoscopic examination in patients with cryptogenic liver abscess especially when it is recurrent.
개에 있어서 심장사상충증을 동반한 창상성 횡격막 허니아의 수술적 치료 1례
조승혁,임영환,손정민,노경완,박창식,전무형,김명철,송근호,정성목 忠南大學校 獸醫科大學 動物醫科學硏究所 2005 動物醫科學硏究誌 Vol.13 No.-
A 7-month old, castrated male Shih-tzu dog was referred to the Veterinary Medical Teaching Hospital of Chungnam National University with history of depression, dyspnea, mild scale, tachypnea, exercise intolerance and severe leanness. On physical examination, cardiac arrhythmias was heard and heart worm ELISA test was positive. Microfilaria was found on the direct blood smear. Survey radiographs showed loss of diaphragmatic line and cardiac silhouette, displacement of lung fields and presence of gas filled intestines in the thoracic cavity. Rib fracture and pelvic fracture with callus formation were found incidentally. On the basis of physical examination and radiographic findings, it was diagnosed as traumatic diaphragmatic hernia and heart worm disease. Herniorrhaphy was performed. Postoperatively, it was treated for heart worm disease and scale. There is no evidence of recurrence of diaphragmatic hernia and heart worm disease over 1 year.
OpenGL에 기반한 전자부품 3D 그래픽 툴의 설계 및 구현
김승구,조현준,형대진,박경환 東亞大學校附設 情報技術硏究所 2005 情報技術硏究所論文誌 Vol.13 No.1
Up to the present, we have used general 3D modelling tool for 3 dimensions visualization of electronic parts. If we use general 3D modelling tool, we are consumed many time and effort because it is not optimized modelling of electronic parts. Therefore we need technical 3D modelling tool for electronic parts. In this paper, in order to solve this problem, we develop the graphic tool that model and visualize the electronic parts as 3 dimensions.
파트너십에 의한 지하철 입구 공간의 쌈지공원 설계 및 시공
김승환,강현우,손용욱,박승범,남정칠,이기철,차민준 東亞大學校 建設技術硏究所 2009 硏究論文集 Vol.32 No.2
A pocket park is valued in securing green space in downtown and improving urban view in the aspect of natural and environmental values, and it signifies a lot as the center of local residents’ community and harmony as well. Since subway exits and surroundings that have high portions in taking up street space due to lack of green space in downtown aren't made full use of, valuable pocket park place. Dangni Pocket Park of subway exits is a park completed with cooperative works and partnership by students, specialists, administrative organizations, businesses and civilian organizations, etc. without support of special budget. The study site was finally chosen to the space between exit No.1 of Dangni subway station, after analyzing the surrounding circumstances, availability and accessibility of the space among the several subway station exits of Saha, Dangni, and Hadan Station in Busan Metropolitan city. For the designing process, The Citizens organization for Million Amenity Park performed the planning and project proceeding, and 19 design drafts were proposed during the class of landscape architecture in Dong-a University. Design review panel members discussed to select the best draft in practical and authentical, and the related experts reviewed and revised to present the final design plan. The construction was conducted was performed under the cooperation between the civil, authorities, and industrial organizations, among which Saha District office managed for the waste treatment and maintenance matters. The graduates of landscape architecture department of Dong-a University and related industrial enterprises supplied landscape materials and related labors, were supported by 20 members of GPM, one of clubs of Dong-a University volunteered durig the most of construction progress, completing the Pocket Park of subway exits through partnership.
Fe-X%Mn-6%Si-9%Cr-5%Ni 합금의 형상기억효과에 미치는 가공열처리의 영향
백승한,전중환,최종술,한중호 연세대학교 산업기술연구소 1994 논문집 Vol.26 No.1
The effect of thermomechanical treatment on the SME(Shape Memory Effect) of Fe-(10∼16)%Mn-6%Si-9%Cr-5%Ni alloys was investigated. The corrosion behaviors of these alloys were also investigated compared with SUS 304 stainless steel and Fe-30%Mn-6%Si shape memory alloy. Through the investigation the Fe-2%Mn-6%Si-9%Cr-5%Ni alloy showed the best SME in as-solution treated state. Training treatment consisting of repetition of cold rolling by 2% at room temperature and subsequent annealing at 650℃ for 10 minutes was performed to improve the SME. The remarkable improvement of SME was obtained at two cycles of training, and then the SME was decreased with further training. This suggests that the extra lattice defects of dislocation and stacking faults introduced by training treatment deteriorates the SME. The Fe-X%Mn-6%Si-9%Cr-5%Ni alloys showed the passive behavior similar to that of SUS 304 stainless steel in 30℃-5% H₂SO₄solution and great improvement in corrosion resistance compared with the Fe-30%Mn-6%Si shape memory alloy.
Sheehan 증후군 발생한 Torsades de Pointes
김승환,김남호,김용철,최준호,박은미,이상재,이은미,유남진,윤경호,오석규,정진원 圓光大學校 醫科學硏究所 2008 圓光醫科學 Vol.23 No.1
재발하는 심실 빈맥으로 내원한 환자에서 Sheehan 증후군을 진단하였고, 적절한 호르몬 보충 치료 후 심전도 이상이 정상으로 회복된 예를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Torsades de Pointes is a form of polymorphic ventricular tachycardia that is associated with prolongation of QT intervals, characterized by QRS complexes of progressively changing ampulitude and cyclic length, giving the appearance of oscillations around the baseline. A 77 years-old woman was presented with hypotention and arrhythmia. Twenty four-hour ECG showed typical episodes of torsades de pointes with QT prolongation. This arrhythmia was controlled by isoproterenol and magnesium infusion, but it was not disappeared. She was diagnosed as Sheehan's syndrome by past history, anterior pituitary stimulation test and empty sella on CT scan. After hormone replacement treatment, Prolonged QT interval was normalized and polymorphic ventricular tachycardia has not recurred. We report a case of torsades de pointes associated with Sheehan's syndrome
조정민,전기영,함년근,이승환,이훈구,한경희 명지대학교 대학원 1999 대학원논문집 Vol.3 No.-
The conventional PI controller are fragile in parameter variation and load-variation. Therefore, in this paper, a speed control algorithm based on the Fuzzy PI controller is proposed for the high performance speed control of a voltage ?? inverter to drive 3-phase induction motors. The computer simulation and experiment results show that the proposed controller are more excellent control characteristics than conventional PI controller in transient-state and steady-state response.
고정자 자속기준 벡터에 의한 유도전동기의 속도제어에 관한 연구
함년근,전기영,성낙규,이승환,한경희 명지대학교 대학원 1997 대학원논문집 Vol.1 No.-
This paper described control of induction motor using voltage source inverter applied to orientation vector control which was indiract vector control. IGBT which has good switching characteristic was used to compose of converter, and speed response characteristic was improved, because of doing speed and current control. And processing speed and reliability was improved, using TMS320C31 and EPLD to compose of controller.
형대진,김승구,조현준,박경환 동아대학교 정보기술연구소 2006 情報技術硏究所論文誌 Vol.14 No.1
In this paper, we introduce the method for developing the mobile 3D game engine based on the WIPI platform which has been proposed as the mobile standard platform. Our game engine is designed so that it supports OpenGL-ES and JSR-184 that are mobile 3D graphic APIs. Our game engine has a mobile emulator operated on PC and SDK to support mobile programming in PC environments. Mobile 3D game developers can use the APIs at various levels. Also, the game engine is developed in modular in order to support various game genres.