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주정민 ( Jung Min Ju ),김용인 ( Young In Kim ),김재광 ( Jae Kwang Kim ),임용수 ( Yong Su Lim ),양혁순 ( Hyuk Sun Yang ),이근 ( Gun Lee ),현성열 ( Sung Youl Hyun ),황성언 ( Seong Youn Hwang ) 대한외상학회 2003 大韓外傷學會誌 Vol.16 No.2
Blunt chest trauma can lead to cardiac complications ranging from simple arrythmias to myocardial rupture. Injury to coronary arteries with subsequent myocardial infarction after blunt chest trauma is rare, but carries a significant risk of morbidity and mortality. Therefore, rapid diagnosis and prompt treatment are reguired. Most coronary artery occlusions after trauma are caused by disruption of pre-existing atherosclerotic palque, so acoronary artery occlusion is unusual complication in a young man. We report the case of a previously healthy young man who developed acute myocardial infarction following blunt chest trauma.
Methylene Blue를 이용한 경부 관통상에 의한 식도손상 진단 1예
주정민 ( Jung Min Ju ),현성열 ( Sung Youl Hyun ),김재광 ( Jae Kwang Kim ),임용수 ( Yong Su Lim ),이근 ( Gun Lee ) 대한외상학회 2003 大韓外傷學會誌 Vol.16 No.2
Penetrating injury of the cervical esophagus cannot be easily identified by physical examination due to its deep anatomical location, so many patients with penetrating neck injuries should be undergone esophagography or esophagoscopy for the evaluation of potential esophageal injuries. However, these diagnostic procedures are invasive, time-consuming, expensive, and, most importantly limited by availability of resources (diagnostic equipment and manpower). We experienced a patient with a penetrating esophageal injury who was promptly diagnosed by using methylene blue. A 32-year-old male visited the emergency room complaining of dyspnea and bleeding after a penetrating neck injury.Thrty (30) minutes after the patient had swallowed the methylene blue solution, we found leakage of blue-colored fluid through the stab wound. He underwent emergent surgical repair without further investigations for esophageal injury.
주정민(Jung-Min Joo),안이기(Lee-Ki Ahn),박훈(Hoon Park),남주훈(Ju-Hun Nam) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.11
Large commercial aircraft and some smaller commercial, corporate, and private aircraft are required by FAA to be equipped with two black boxes, the Cockpit Voice Recorder(CVR) and the Flight Data Recorder(FDR) that record information about a flight. For this reason, a new combined FDR & CVR for small-sized aircrafts. is presently developing at Korea Aerospace Research Institute(KARI). In this paper, we introduce the present status of our development and propose five optimized designs of Units applied to our combined FDR & CVR system, i.e., Data Processing Unit, Signal Condition Unit, Voice Capture Unit, Interface Unit and Power Control Unit.
5GHz 대역에서 트리플 U-슬롯 모양의 마이크로스트립 안테나 설계 및 제작
강문규,정유근,주정민,정계택,윤중한,곽경섭,Kang, Moon-Kyou,Jung, Yoo-Keun,Ju, Jeong-Min,Jeong, Gyey-Teak,Yoon, Joong-Han,Kwak, Kyung-Sup 한국전기전자학회 2004 전기전자학회논문지 Vol.8 No.1
본 논문에서는 기존의 연구에서 이루어진 HiperLAN 대역의 무선 LAN용 U-슬롯 모양의 안테나에 HiperLAN 1/2 및 5GHz 대역의 ISM 밴드의 대역폭 범위까지 다룰 수 있는 안테나를 설계하고, 제작하였다. 기본 U-슬롯 모양의 구조에 두 개의 U-슬롯 모양을 추가하여 새로운 모델을 제안하였다. 접지면과 기판 사이에 공기층을 삽입하여 VSWR<1.5에서 충분한 대역을 얻을 수 있도록 하였고, 안테나의 이득은 $6.27{\sim}9.82dBi$를 얻었다. 방사 패턴은 주파수 대역에서 안정된 패턴을 얻었다. In this paper, we designed, fabricated, and measured antenna results consisting of previous research, that can handle from wireless using-LAN U-shaped slot antenna of HiperLAN bandwidth to ISM band of HiperLAN 1/2 & 5 GHz bandwidth. We presented a new model that structuresof basic U-shaped slot added the same thing twice.After the foam layer is inserted between ground plane and substrate, we got enough bandwidth for VSWR<1.5. The antenna gain was $6.27{\sim}9.82dBi$. The radiation pattern got a stable pattern in frequency bandwidth.