當歸水鍼이 鎭痛效果에 미치는 影響에 關한 硏究

朴快煥,姜成吉 慶熙大學校韓醫科大學韓醫學硏究所 1984 慶熙韓醫大論文集 Vol.7 No.-

관상동맥질환 환자에서 스텐트 시술 후 재협착에 관한 연구

강진환,권영주,박상호,한대희,이상철,김명구,변정득,최병조,심규혁,온영근,현민수,김성구 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.2

Background and aims : In the coronary artery disease, a rate of restenosis was much decreased by placement of coronary stent than when percutaneous transluminal coronary angioplasty has been applied, but there are still important clinical problems of restenosis. There has been many progressive studies about various factors contributed to this restenosis. So, we studied a relation between restenosis after placement of coronary stent in the coronary artery disease and many clinical factors, characteristics of stenotic lesion and procedural factors, and also assessed the restenosis rate of various coronary stents. Methods : Total 58 lesions(46 cases of patients ; man 30, woman 16) were evaluated, which has been performed a follow-up coronary angiography after 6 months (mean 188 days) since coronary stent had been placed. Various stents were implanted and assessed a relation between restenosis and many factors. Results : Of 58 lesions were target stenotic studies, there were 22 of restenotic lesions(37.9%), and the restenosis rate wes statistically significant difference in the relation with diabetes mellitus(p<0.05), group of acute myocardial infarction(p<0.05) among clinical diagnosis of ischemic heart disease(stable angina, unstable angina and acute myocardial infarction) in clinical factors and with high dilation pressure of stent(p<0.05) in procedural factors. When the rate of restenosis was evaluated among implanted stents, it was lowest in the Multilink^(®) stent and highest in the Nir Royal^(®) stent(60%). Conclusion : In this study of restenosis and various factors after placement of stents in the coronary artety disease, factors such as diabetes mellitus, group of acute myocardial infarction and a dilation pressure of stent were significant related with restenosis and the restenosis rate of Multilink^(®) stent was lowest and the highest restenosis rate was of Nir Royal^(®) stent.

24주간 추적하는 임상 연구에서 한국인 남자 알코올 의존 환자의 비재발률

강철중,김성곤,남궁기,조동환,이병욱,최인근,최용성,박성봉,제영묘,김현경,김성연 大韓神經精神醫學會 2006 신경정신의학 Vol.45 No.1

Objetives : In order to provide useful data tbr the further clinical studies with Korean alcohol-dependent patients, enrollment and non-relapse rates were investigated while alcohol-dependent patients wcre followed up for 24 weeks. Methods : The subjects of this study were alcohol-dependent male patients who, for the first time, visited a hospital among 3 groups of hospitals, University Hospital, General Hospital or Mental Hospital, or those who needed to be followed up after discharge from those hospitals. After assigning 12 subjects to each hospital, we investigated enrollment and non-relapse rates while cognitive-behavioral therapy and pharmacotherapy were provided. Results : 1) Forty-eight patients were enrolled and the rate of enrollment was 36.4%. The enrollment rate in the University Hospital group was 52.1%, in the General Hospital group 50.0%. and in the Mental Hospital group 10.4%. 2) In 48 patients, non-relapse rate was 27.1% at 12 week and 18.8% at 24 weeks after starting follow-up. It was 24.4% and 20.0% at 12 and 24 weeks, repectively, in the University Hospital group while the General Hospital group showed 33.3% and 16.7%, respectively, and the Mental Hospital Group showed 20.0% at both 12 and 24 weeks. Conclusion : These results provide important data for further clinical studies of Korean alcohol-dependent patients.

우리 나라에서 재해방지를 위한 개선안 생활변화단위 모형 개발 및 응용

강영식,함효준,양성환 대한설비관리학회 2003 대한설비관리학회지 Vol.8 No.2

The major cause of the industrial accidents is often induced by the human error. It brings about all kind of accidents. Moreover, the more the information and system complicates, the more the human error brings about. So the active accident prevention policy by human behavior, life style, culture, and psychology should develop at this time. Especially, the behavior models have provided the accident proneness concept through the life change unit factors. According to the existing studies on the life change unit models, the oriental behavior models differs from the western model in the life style and ideas. Therefore, the purpose of this paper is to develop the proposed life change unit model by the improved life change unit factors, and to evaluate its application in real fields. The proposed model can be simply applied in real fields in order to minimize the industrial accidents

고조파 분석을 이용한 고저항 지락사고 검출에 관한 연구

강승호,조성빈,김철환 成均館大學校 科學技術硏究所 1999 論文集 Vol.50 No.1

High Impedance Fault(HIF) is defined as fault that general overcurrent relay can not detect or interrupt. When HIF occurs in transmission line, arc with energized high voltage conductor is happened and results in fire hazard, equipment damage or personal threat. This paper proposed the HIF fault detection method using harmonic analysis and showed the arc model which can he implemented within Electromagnetic Transients Program(EMTP). Harmonic analysis is efficient and useful for the detection of HIF in power system because it shows good characteristics about odd harmonic components of current when HIF occurs.

[논문]용접부의 피로 파손모드 평가에 대한 구조응력기법의 적용에 관한 연구

강성원,김명현,김정환 釜山大學校生産技術硏究所 2006 生産技術硏究所論文集 Vol.65 No.-

반복 하중을 받게 되는 하중전달형의 필릿 용접이음에서는 용접 토우부 뿐만 아니라 용입 부족부 선단에서도 응력집중을 일으키고 피로균열이 발생/ 전파하는 경우가 있다. 특히/ 용접 루트부에서 발생한 균열은 육안관찰이 불가능하고 초음파 탐상등에 의한 비파괴 검사에 의해서도 검출이 곤란한 경우가 많다. 이것은 중대한 손상을 일으키기 까지 방치되는 경우가 많기 때문에 용접 루트부에서 발생하는 균열에 대한 연구는 현재 활발히 진행되고 있다. 본 연구에서는 최근 유한요소 해석시 요소의 크기에 둔감하다고 알려진 구조응력 기법을 이용하여 용입 부족부를 가지는 하중전달형 필릿 용접부의 피로 파손모드를 평가하였다. 용접부 다리길이의 변화에 따른 사례 연구를 통하여 용접 루트부의 파손을 피할 수 있는 용접부 시공기준에 관한 연구를 수행하였으며 이에 대한 구조응력 기법의 적용 가능성을 검토하였다.

지면판위 복수장애물 주위 유동장의 가시화 (Ⅱ)

강성환,김계현,이동환 울산대학교 1992 공학연구논문집 Vol.23 No.1

地面板위에 모양이 서로 다른 복수 장애물을 바람방향과 평행으로 배열한 후(Tandem Arrangement)액체4염화 티타늄은 관찰대상 표면에 직접 도색하여 2차원 및 3차원 유동장을 효과적으로 可視化하였다. 유동장의 動的特性, 즉 박리영역의 양상, 방출 후류의 모양이 구조물의 배치모양과 구조물 사이의 간격에 크게 영향을 받고, 慝히 박리영역 내부의 역유가 확인 되었다. Flow patterns around two-bluff cyliders in the tandem arrangements on a gound plane are effectively visualized using liquid titanium tetrachloride. As results, it was observed that the form of seperated lines on the ground plane and the shedding of vortices from two cylinders were varied with both the gap width anda pair of different cylinders.

LPF와 반복삽입을 이용한 효율적인 오디오 워터마크 추출

강혜원,이우선,정성환 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

We propose a method to decrease greatly the of original signal and improve efficiency in extraction process by modifying the existent audio watermarking extraction process. In the extraction process, we improve the efficiency of watermark extraction through repeated insertion of watermark and usage of a simple low frequency filter to remove a signal similar to an original signal as a preprocessing. As the result of experiment using some actuality audio data, we get watermark detection rate improvement of about 79%.

결핵성 척추염에서 양측 접근법에 의한 전방척추융합술의 수술적치험 1예

강중식,조준,윤승환,문창택,장상근 건국대학교 의과학연구소 2001 건국의과학학술지 Vol.11 No.-

In the treatment of tuberculous spondylitis, posterior spinal fusion is more simple and safe procedures than anterior spinal fusion. We performed bilateral anterior spinal fusion with autologous iliac bone graft and concomitant with psoas muscle abscess drainage and antituberculosis drug. As a result, patient was possible early ambulation and he had no recurrence, no complication such as resorption of bone fragment and kyphotic angle change. This article describeds the advantage of bilateral anterior approach in tuberculous spondylitis wish psoas abscess.

상악 골절단 및 급속구개확장(SARME)을 이용한 술전 치성보상의 해소와 악교정 치험 2례 : REPORT OF 2 CASES

강상원,김명래,김기환,김한석,김채두 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.4

This is to review the surgically assisted rapid maxillary expansion followed by orthodontic treatment for malocclusion with maxillary narrow-arch. Two patients who presented with narrow-arch maloccluson and transverse maxillary deficiency underwent a Lefort I osteotomy extending to the zygomatico-maxillary but-trees and splitting of the midpalates. Orthopedic expansion was initiated with one complete rotation 0.8㎜ of the expansion screw on the day, and followed by two quarter-turn 0.4㎜ each day thereafter untill the arch expanded to preplanned level. Changes of the mid-incisal gap space. intermolar width. incisal inclination, TMJ symptoms and reapse tendency were examined periodically. After the surgico-orthodontic leveling and alignment. pre-planned orthognathic surgeries (maxillary & mandibular osteotomies) were rendered to correct the maxillofacial deformites. Results:Intermolar width (IMW) was increased to 13㎜ within 20 days and the gap between to cen-tral incisors was declined to5-7^。. There were neither complaints nor signs of TMJ disorders during treatment. The amount of relapse was less than 0.5㎜ in a year. Therefore, the surgically assisted rapid palatal expansion(SARME) can be a pre-orthodontic option to gain the interdental space in narrow-arch malocclusion with crowding and to reduce the labial inclination of upper incisors without extraction of premolars.