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한영민,정연준,이승렬 대한혈관외과학회 1995 Vascular Specialist International Vol.11 No.2
Due to the increased use of percutaneous diagnostic and therapeutic procedures, clinicians are now faced with a greater number of iatrogenic arterial injuries. The pattern of injury is changing as more complex procedures are being performed in patients with diffuse advanced atherosclerosis. If not recognized and treated appropriately, iatrogenic arterial injuries may threaten life and limb. A predilection for the iliofemoral segment as the site of injury exists because of the relative accessibility and, therefore, frequent use of the the femoral artery as well as its common involvement by atherosclerotic disease. Arterial injuries may present with hematoma, pseudoaneurysm formation, excessive bleeding, acute ischemia, or arteriovenous fistula. We experienced a case of pseudoaneurysm of the femoral artery and expanding retroperitoneal hematoma after transfemoral angiography was performed in patient with diffuse advanced atherosclerotic lesion and treated with artificial graft between external iliac and superficial femoral artery.
한영민,김민호,이동근,정경호,김종수,손명희,최기철 의과학연구소 1994 全北醫大論文集 Vol.18 No.2
Pulmonary histiocytosis X is an uncommon but important cause of pulmonary fibrosis and honeycombing in young adults The chest radiograph of our patient shows characteristic multiple thin-walled cysts, which are most apparent in the upper and middle lung zones, but spare the costophrenic angles. The HRCT shows multiple thin-walled cysts and a few scattered nodules in both upper and middle lung and right lower lung and right pneumothorax We experienced pathologically proven primary pulmonary histiocytoeis X in 30 years oldm ale who had recurrent pneumothorax.
韓榮民 慶北大學校 自然科學大學 地質學科 地質學硏究會 1988 伏賢地質 Vol.- No.10
A ductile shear zone trending N 50 E develops in Jurassic granite in the vicinity of Jeonju, Chollabuk-do. This shear zone shows oblique (normal-dextral) strike slip movement sense which is indicated from S-C mylonite, shear band, displaced broken grain, asymmetric porphyroclasts and grain shape preferred orientation and takes open fold resulting from later deformation. Microstructural observation of grain size, grain shape, grain boundary morphology and internal deformation features of individual grains through the shear zone shows high strains of intense deformation at the shear zone center and metasediment contact, while low strains at the shear zone tip and shear zone boundary. Strain history of this shear zone is interpreted to be noncoaxial and inhomogeneous during the deformation, resulting from the combination of simple shear and pure shear. Evidences for non-coaxial inhomogeneous deformation occur from S-C mylonite and asymmetrical porphyroclasts, displaced broken grains, minor fold of mylonite foliation, local intense strain zone in the microscopic observation and field, Strain analysis for quartz aggregate represents flattening type(K<1) of strain with Rs = 2.75-4.5. Deformation mechanisms of the shear zone are not easy to determine, but dislocation creep may be operated at the earlier and grain boundary sliding followed from grain size reduction at the later stage, giving rise to mylonitic layering and finally grain growth phenomena are also recognized.
한영민,장국조 한국융합학회 2017 한국융합학회논문지 Vol.8 No.12
In recent years, the increase of secondary controls within vehicles requires a mechanism to integrate various controls into a single device. This paper presents control performance of an integrated magnetorheological (MR) haptic device which can adjust various in-vehicle comfort instruments. As a first step, the MR fluid-based haptic device capable of both rotary and push motions within a single device is devised as an integrated multi-functional instrument control device. Under consideration of the torque and force model of the proposed device, a magnetic circuit is designed. The proposed MR haptic device is then manufactured and its field-dependent torque and force are experimentally evaluated. Furthermore, an inverse model compensator is synthesized under basis of the Bingham model of the MR fluid and torque/force model of the device. Subsequently, haptic force-feedback maps considering in-vehicle comfort functions are constructed and interacts with the compensator to achieve a desired force-feedback. Control performances such as reflection force are experimentally evaluated for two specific comfort functions. 최근 차량내부에서는 운전과 직접적인 관련이 적은 다양한 편의장치들이 도입되고 있으며, 이러한 장치들의 조작환경을 하나로 통합하려는 노력이 시도되고 있다. 본 논문은 자동차 내의 다양한 편의장치에 대한 통합 조작 환경을 구축하기 위해 자기유변유체(magnetorheological fluid; MR 유체)를 이용한 햅틱장치를 제안하고자 한다. 이를 위해 먼저 차량 편의 조작장치들이 갖는 회전과 상하 수직 운동을 동시에 구현할 수 있는 메커니즘을 고안하고 햅틱 기능을 부여하기 위해 MR 유체를 도입함으로써 하나의 장치로 다기능 조작이 가능한 햅틱 장치를 고안한다. 장치에서 발생하는 반향력에 대한 모델링에 근거하여 MR 햅틱 장치의 자료를 설계하고 시작품을 제작한다. 그리고 완성된 장치의 회전 및 수직 운동에 대한 응답 성능시험을 수행하여 제안된 모델을 검정한다. 또한 힘 반향 성능을 구현하기 위해 장치의 반향력 모델을 이용한 역모델 보상기(inverse model compensator)를 설계한다. 마지막으로 실제 자동차의 여러 편의 기능의 작동과정을 고려하여 햅틱 반향력 맵을 구축하고 제어기와 연동하여 제작된 햅틱 장치의 힘반향(force-feedback) 제어 성능을 평가한다.
선천성 폐동맥 판막 협착증 및 대동맥 판막 협착증에서 경피적 바룬카테타 성형술
한영민 대한영상의학회 1989 대한영상의학회지 Vol.25 No.6
Transluminal balloon valvuloplasty was used to treat congenital pulmonary valve stenosis is 12 patients and aortic valve stenosis in 3 patients aged 22 months to 18 years. the right ventricular pressure gradient decreased from 87.8$\pm$30.33mmHg to 33.3$\pm$ 16.99mmHg(P<0.01) immediately after the procedure for pulmonary valve stenosis. The procedure success rate was 92% (11/12) and the case which failed was one due to mild dysplatic pulmonary valve. The pressure gradient across the aortic valve before percutaneous balloon aortic valvuloplas-ty were 220 , 103, 119mmHg decreased to 64, 69, 96mmHg after the procedure. Percutaneous transluminal balloon valvuloplasty was effective in the treatment of congenital pulmonary and aortic valve stenosis.
합병증을 동반한 외사성 신주위 혈종의 경피적 도관배액술: 증례 보고$^1$
한영민,진공용,정수현,박종관,Han, Yeong-Min,Jin, Gong-Yong,Jeong, Su-Hyeon,Park, Jong-Gwan 대한영상의학회 2002 대한영상의학회지 Vol.47 No.2
외상성 신주위 혈종은 매우 흔한 질환이다. 신주위 혈종의 정도에 따라 치료 방침이 다르지만 대부분 보존적인 요법으로 치료가 된다. 신주위 혈종으로 인한 합병증은 드믈며, 특히 이로인해 장폐쇄를 일으켰다고 보고한 논문은 거의 없다. 저자들은 신주위 혈종이 있은 후 동반된 합병증으로 장폐쇄가 발생한 환자와 신주위 농양이 발생한 환자에서 경피적 배액술을 실시하여 성공적으로 치료한 2예를 보고하는 바이다. A perirenal hematoma very commonly occurs after trauma. Treatment differs according to the degree of renal injury, though many cases are managed conservatively and complications are rare. We report two cases in which successful treatment of a perirenal hematoma involved percutaneous catheter drainage; in one there was bowel obstruction, and in the other the hematoma was infected.