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겨울철 온도와 습도변화에 따른 철도차량 실내 PMV 측정 분석
소진섭(So Jin-Sub),유성연(Yoo Seong-Yeon),김희만(Kim Hui-Man),강성해(Kang Sung-Hae),김완종(Kim Wan-Jong),김윤수(Kim Yun-Su),김진규(Kim Jin-Kyu),서승석(Seo Seung-seok),윤차중(Yun Cha-Jung) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
The indoor PMV(Predicted Mean Vote) in rolling stock is very important for the enhancement of the amenity and health of passengers. Many researchers have studied it not for train but for building. Thermal comfort in Rolling Stock is function of temperature, relative humidity, air current, radiation temperature, etc. So, in this study, we have performed thermal environment in rolling stock(Electric motor car, Saemaeul, Mugunghwa train), and verified the relation between the PMV from Nov.2007 and Feb.2008. As a result, the average PMV value for each trains are 0.2, -0.3 Electric motor car, 0.5, 0.1, 0.1, 1.1 for Mugunghwa, 0.3, 0.5 for Saemaeul.
비구컵 재치환술에서 파쇄동종골 이식을 이용한 비구 결손의 재건술
안기찬(Ki Chan Ahn),최장석(Jang Seok Choi),김영창(Young Chang Kim),서승석(Seong Seok Seo),손영진(Young Jin Sohn),이창섭(Chang Seop Lee),전진욱(Jin Wook Jeon),손명환(Myung Hwan Sohn) 대한고관절학회 1999 Hip and Pelvis Vol.11 No.1
Twenty-one revisions of acetabular component from twenty patients were peformed using morselized allograft with a porous coated, screw-fixed hemisherical cup, between 1993 and 1996 at Inje university, Pusan Paik Hospital and were followed up for more than two years. Acetabular bone deficiency was classified by the AAOS classification. In our cases, 13 cases (60%) were cavitary deficiency and 8 cases (40%) were of cavitary deficiency combined with focal segmental deficiency. We evaluated our results by Harris hip score clinically and by the degree of cup migration, angular change of cup and resorption of graft radiologically. The definition of radiological loosening of cup was a 4mm migration of cup vertically or horizontally or an angular change of the cup of more than five degrees. The mean Harris hip score was improved 48 points to 85 points. The mean vertical migration was 1.4 mm and medial migration was 1.2 mm and no significant angular change of cup. There was no loosening of cup and rerevision. In conclusion, we had good results of acetabular cup with morselized allograft over a two year follow up period . Further long-term follow-up study is requred.
수술적 도달법에 따른 고관절 전치환술후의 이소성 골형성
안기찬 ( Ki Chan Ahn ),윤현기 ( Hyun Ki Yoon ),최장석 ( Jang Seok Choi ),김영창 ( Young Chang Kim ),유현덕 ( Hyun Duk Yoo ),서승석 ( Seong Seok Seo ),이영구 ( Young Gu Lee ) 대한고관절학회 1994 Hip and Pelvis Vol.6 No.1
Periarticular heterotopic bone(HB) formation after total hip arthroplasty (THA) was unknown causes yet, but occurs more commonly after procedures in which considerable bone was resected or the soft tissues were dissected extensively. The effect of the lateral and the postero-lateral surgical approaches for THA on HB formation were studied in 210 consecutive patients with 246 THA when reviewed 12 months following the operation. Overall rate of formation of HB after THA was 9. 75% and almost HB maturation occured before six months. Although the lowest incidence of HB formation occured after the posterolateral approach, postoperative hip scores for pain, function and range of motion(ROM) scorea showed no significant difference between groups. Therefore, the ability to achieve adequate pain relief and function with THA is not affected by the type of approach.
성인 대퇴골두 무혈성 괴사와 대퇴경부 골절에 대한 Bipolar Endoprosthesis 시술 후 기능 비교 평가
배준범,서승석,최장석 인제대학교 1995 仁濟醫學 Vol.16 No.2
Bipolar endoprosthesis는 일반적으로 대퇴골두 무혈성 괴사와 대퇴경부 골절시 사용할 수 있는 방법으로 저자들은 2년 이상 추시가 가능한 57례를 대상으로 대퇴골두 무혈성 괴사와 대퇴경부 골절시 Bipolar endoprosthesis 시행 후 방사 선학적 및 기능적 평가를 통하여 비교하였다. From January 1988 to July 1990, at Pusan Paik Hospital, 57 hips in 50 patients were treated by surgical implantion of bipolar hip prosthesis either with or without cement fixation of femoral stem. Twenty-two of the prosthetic replacements were done for the treatment of femoral neck fracture and 35 for the avascular necrosis of the femoral head. The cases were followed from 2 years to 5 years (average 2 years and 10 months) and assessed in terms of functional and roentgenographic results. Authors compared the data of the femoral neck fracture with that of the avascular necrosis. In conclusion, bipolar prosthetic replacement shows more inferior results in the avascular necrosis than in the femoral neck fracture.
곽철,서승석,유현덕,김영창,최장석,이영구 인제대학교 1994 仁濟醫學 Vol.15 No.1
외상에 의한 경추부 손상은 심한 후유증 및 사망까지도 초래하는 가상 흔한 원인의 하나이다. 이에 1981년부터 1991년까지 인제대학교 부속 부산백병원 정형외과 학교실에서 치료한 하부 경추 골절 탈구 환자 47명을 대상으로 분석하여 문헌고찰과 함께 보고하는 바이다. Acute injuries of the cervical spine are the most common causes of severe diability and death following trauma, yet the diagnosis is often delayed and treatment, inadequate. Especially, injuries of the lower cervical spine are complex and potentially devastating. The goals of treatment of fracture-dislocations are to provide stability and to prevent future injury to the spinal cord and nerve roots. The authors treated 46 patients with unilateral facet dislocation or fracture-dislocation of the lower cervical spine at Inje University Pusan Paik hopsital between 1981 and 1971, and the results were as follows ; 1.Of these 46 patients, 32 patients were treated by open reduction and fusion, and 14 by nonoperative management. 2.The frequent level of the injury was between C5-6(43% ). 3.Flexion-rotation was the most common mechanism and has more severe neurologic damage. 4.Anatomical reduction was achieved more frequently in the operative group(84% compared with 43%). Nonoperative treatment was more likely to result in significant symptoms and instability on flexion/extension lateral radiographs. 5.Open reduction and rigid internal fixation of unilateral facet dislocation or fracture-dislocation gave better result.
백서 좌골 신경 결손에서 이식복원술에 따른 신경전달 검사
최장석,김영창,서승석,안기찬,유성진 인제대학교 1999 仁濟醫學 Vol.20 No.1
자가신경이식과 실리콘관을 이용한 신경봉합술의 신경재생을 비교 관찰하기 위해 Sprague-Dawley계 30마리의 백서를 이용하여 좌골신경 절제 후 미세수술법을 이용하여 반대측 좌골신경을 자가이식하고 그 신경간극에는 실리콘관을 연결하여 술후 2주, 4주, 8주, 12주, 16주에 자가신경 이식군과 실리콘관을 이용한 군의 신경재생의 양상과 근전도 소견을 비교 관찰하였다. 자가신경 이식군이나 실리콘관 이식군 모두 4주 이상이면 신경전달 검사상 비슷한 정도의 진폭을 보였다. 유수신경섬유 수는 술후 4주에서는 실리콘관 이식군에서 더 의미있는 증가를 보였으나 12주 이상에서는 평행을 이루면서 큰 차이를 볼 수 없었다. To compare the result of autogenous nerve graft with that of silicone tubing method in segmental defect of sciatic nerve, the experiments were carried out on adult rats with autogenous nerve graft in the left side and silicone tubing in the right side using microsurgical technique. Similar amount of amplitude in NCT after postoperative 4 weeks in both groups. The numbers of myelinated nerve fibers were more significantly abundant in silicone tube group at postoperative 4 weeks, but there were no difference between 2 groups in postoperative 12 weeks.