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자기 누설 탐상 방식을 이용한 소형 비파괴 검사기 개발
성경준(Kyung Jun Seong),조봉균(Bong Kyun Jo),이근보(Gen Bo Lee),홍용환(Young Whan Lee),박치용(Young Chi Park),박일환(Il Whan Park),박정길(Gil Jung Park),박관수(Gwan Soo Park) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.4
자기누설 탐상시스템은 자성체인 구조물에서 검사 대상 물체를 자화시켜 결함부위에서 자기 누설의 여부를 측정함으로써 구조물의 결함, 부식 등을 탐지하는 시스템이다. 본 논문에서는 소형 비파괴 검사시스템을 설계하고 제작하였다. 또한, 3차원 유한요소법을 이용하여 해석하고 측정하여 그 결과를 비교 분석하였다.
김완식 ( Whan Sik Kim ),조민수 ( Min Su Cho ),배금석 ( Keum Seok Bae ),강성준 ( Seong Joon Kang ),이강현 ( Kang Hyun Lee ),황금 ( Keum Hwang ),오진록 ( Jin Rok Oh ),박일환 ( Il Hwan Park ) 대한외상학회 2007 大韓外傷學會誌 Vol.20 No.2
Purpose: Trauma is the 5th most common leading cause of death in Korea, but there has been no appropriate management system for patients until now. We analyzed the main causes of death in trauma patients by comparing the characteristics of those patients with the characteristics of patients who survived. We feel this analysis should have a positive effect on the development of an appropriate trauma management system in Korea. Methods: We retrospectively reviewed trauma patients who had been admitted to the Department of General Surgery from February 2002 to February 2007. We compared several expected risk factors between the mortality and the survival group. Data on the transportation, arrival time at the emergency center, amount of transfusion, initial shock index, cause of death, and initial physical condition according to RTS (Revised trauma score), ISS (Injury severity score) and TRISS (Trauma and Injury Severity Score) were collected. Patients with ISS lower than 12 were excluded. Results: Three hundred sixty-six(366) patients with multiple injuries were included. There were 40 patients in the mortality group and 326 patients in the survival group. The mean arrival time (minutes) to emergency center was longer in the mortality group (137.6 vs 93.6 p 0.04). The total amount of transfusion (ml) was larger in the mortality group (7139 vs 2470 p 0.01). The initial shock index was higher in the mortality group (1.45 vs 1.17 p<0.01). The RTS, ISS, and TRISS were not statistically different between the groups. In the multivariate analysis, mean arrival time and initial shock index were important factors for survival. Conclusion: If the mortality rate of trauma patients is to be reduced, the arrival time at the emergency center should be minimized. Improvement of the emergency medical transfer service system is very important for achieving that. (J Korean Soc Traumatol 2007;20:96-100)
김종환 ( Chong Whan Kim ),박일환 ( Il Hwna Park ),권우철 ( Woo Xheol Kwon ),김영주 ( Young Joo Kim ),정순희 ( Soon Hee Jung ),이선녕 ( Shun Nyung Lee ),이석정 ( Seok Jeong Lee ),이지호 ( Ji Ho Lee ),정세현 ( Sae Hyun Jung ),전예령 대한결핵 및 호흡기학회 2012 Tuberculosis and Respiratory Diseases Vol.72 No.1
Hereditary hemorrhagic telangiectasia (HHT, Osler-Weber-Rendu disease) is a rare autosomal dominant disease characterized by heterogenous multisystemic dysplasia of the vascular tissue. Prevalence of HHT is 1 in 5,000∼8,000. HHT commonly presents with recurrent epistaxis, but may have more serious consequences if visceral vascular beds are involved. Approximately 30∼50% of HHT cases also present with pulmonary arteriovenous malformation (PAVM). Spontaneous hemothorax is less common, and PAVM is one of the causes leading to hemothorax. Our case involved an 18-year-old female who had suddenly developed right chest pain. The reason for chest pain was due to right spontaneous hemothorax accompanied by PAVM in the right middle lobe. The patient was additionally diagnosed with HHT upon examination of her family history, specifically through her mother`s symptom that included recurrent epistaxis and mucosal telangiectasia.
박만철 ( Man Chul Park ),김지은 ( Ji Eun Kim ),송언호 ( Eun Ho Song ),박일환 ( Il Whan Park ),박진완 ( Jin Wan Park ) 대한산부인과학회 2004 Obstetrics & Gynecology Science Vol.47 No.10
Tsutsugamushi disease (scrub typhus) is a rickettsian febrile disease which is seldom found in pregnancy. A 28-year-old woman was infected with scrub typhus at the 22th week of gestation which was diagnosed on the basis of clinical features. A serology fo