췌장염에 의한 가성낭종내에 생긴 가성동맥류 : 1례 보고

오연희,이채경,김승현,이성우,양창현,이정호,이영현 동국대학교 경주대학 1996 東國論集 Vol.15 No.-

만성 췌장염의 합병증으로 생긴 가성동맥류는 드문질환으로, 반복적으로 다량의 출혈을 일으킬 수 있으며, 치료를 하지 않을 경우 사망율이 높기 때문에, 조기 진단과 치료가 필수적이다. 저자들은 38세 남자 환자에서 췌장염의 합병증으로 생긴 가성낭종내에서 발생한 가성동맥류 1예를 경험하였기에 보고하는 바이다. 가성 동맥류의 색혈류도플러상 낭종내에 양방향 흐름의 와류를 볼 수 있었다. Pancreatic Pseudoaneurysm within Pseudocyst from Pancreatitis: 1 Case Department of Diagnostic Radiology and Internal Medicine, College of Medicine,DongGuk University Yeon Hee OH M.D., Chae Kyeong Lee M.D., Seoung Hyeon Kim M.D., Sung Woo Lee M.D., Chang Heon Yang M.D., Jung Ho Lee M.D., Young Hyun Lee M.D. Pseudoaneurysm from pancreatitis is uncommon, but it can cause recurrent and massive hemorrhage. Because of high morbidity and mortality, early detection and treatment of the pseudoaneurysm is needed. We report a case of pseudoaneurysm within pseudocyst from pancreatitis. Color-flow Doppler sonography shows bidirectional flow and turbulent arterial flow, within anechoic mass.

이중혈류유발 심폐소생술이 심정지를 유발한 개의 단기 생존율에 미치는 영향

황성오,조준휘,강구현,김성환,문중범,이강현,이승환,윤정한,최경훈,홍은석 대한응급의학회 2000 대한응급의학회지 Vol.11 No.3

Background and Objectives: We previously reported that, compared with standard cardiopulmonary resuscitation(S-CPR), better hemodynamic effects could be achieved by simultaneous sterno-thoracic cardiopulmonary resuscitation(SST-CPR) in which we compressed the sternum and constricted the thorax circumferentially during the systolic period by using a device. This study was designed to assess whether SST-CPR, compared with S-CPR, improve the survival rate of dogs with cardiac arrest. Subjects and methods: Twenty-five mongrel dogs(19∼31㎏) were enrolled in this study. After four minutes of ventricular fibrillation induced by an AC current, animals were randomized to resuscitate with either S-CPR(n=13) or SST-CPR(n=12). Epinephrine(1 ㎎) was injected into the right atrium every three minutes after the beginning of CPR. Defibrillation was attempted after 6 minutes of CPR. Standard advanced cardiac life support was started if defibrillation was not successful. Results: SST-CPR resulted in significantly(p<0.001) higher systolic arterial pressure(91±47 vs 47±24 ㎜ Hg), diastolic pressure(43±24 vs 17±10 ㎜ Hg), coronary perfusion pressure(35±25 vs 13±9㎜ Hg), and end tidal CO2 tension(9±4 vs 3±2 ㎜ Hg). Two of 13 animals(15 %) resuscitated with S-CPR and six of 12 animals(50%) resuscitated with SST-CPR survived until 12 hours after cardiac arrest(p<0.05). Donclusion: SST-CPR, compared with S-CPR, improves the short-term survival rate in canine cardiac arrest.

사회체육활동의 시대적 특성에 따른 역할변화와 전망에 관한 연구

현승권,정인근 한국학교체육학회 2001 한국학교 체육학회지 Vol.11 No.2

The main purpose of the study was to consider change of mass sport activity according to social change. To tarry out this purpose the following subsequent questions were studied 1) mass sport activity on modem society, 2) mass sport activity on the future society, 3) perspectives of mass sport activity according to periodic differences. Starting from the middle of 1990s, Modem people's concern and interests in mass sport activity along with gradual development of related to sport have appearing. Especially peoples concern and interests in mass sport activity have grown steadily and have been changing according to the social change to the coming 21th century. Social change in modem society finds their roots in modernization from social mobility and the disintegration of traditional social values and norms. Accordingly the welfare of mass sport activity increasingly becomes an important aspect of social culture and social institution and researches into the relationships between the social change and mass sport activity increased. Mass sport activity is the means of providing a sub cultural foundation to effectively cope with the fast social change to the 21th century, as well as a social means of contributing to the goal of an improved quality of life. On the basis of the literature review, the researcher suggested sport service expansion for the elderly, more opportunities for mass sport activity participation, more accessibility in the community sport facilities, development of mass sport activity information network, commercialization of mass sport activity, and environment prevention through sport participation. there is no doubt that coming 21st century will be an information era. Along with this social trend, the individual and social needs for the mass sport activity will be increased. This study reviewed the mass sport activity trends as shown by contemporary society and substantiate the need for the long-term planning and strategy for the mass sport activity demands and supplies.

Hough Transform을 이용한 위치오차보정

오승용,이용현 江南大學校産學技術硏究所 2002 산학기술연구소논문집 Vol.- No.14

본 논문에서는 두 이미지에 존재하는 위치오차를 Hough Transform(HT)을 이용하여 위치오차를 계산하는 알고리즘을 소개한다. 두 개의 이미지에 대해 전처리과정을 통하여 각 이미지에 존재하는 물체들의 위치를 계산한다. 두 이미지에 존재하는 물체들의 위치사이의 차이 Δ_x, Δ_y를 계산하고 HT에 적용하여 두 이미지의 위치오차를 구한다. 구한 위치오차를 이용하여 보정함으로써 일치시킨다.

상부소환관협착에 대한 Savary-Gilliard Dilatation의 치료효과와 안전성에 관한 관찰

정현용,육은주,임의혁,김병호,성자원,이기천,허승식,이헌영,김영건 충남대학교 의과대학 지역사회의학연구소 1992 충남의대잡지 Vol.19 No.2

For the patient with stenosis of upper digestive tract caused by either benign or malignant process, esophageal dilatation is an important therapeutic modality. We reviewed retrospectively 39 cases treated by Savary-Gilliard dilatation for upper digestive tract stenosis, and results were follows : (1) Dysphagia was improved in 95% of the patients. (2) Eight patients(20%) sufferd perforation, five of them were managed with conservative medical measures, others were managed operatively. (3) In the cases with benign stenosis dysphagia was not noticed for 8.8 months, but with malignant stenosis dysphagia was reappeared after 2.8 months despite concomitant chemoradiotherapy. In conclusion, Savary-Gilliard dilatation was an effective measure for symptome due to upper digestive tract stenosis, but more careful attention for perforation should be necessitated. Also another therapeutic modality for treatment of malignant stenosis was inevitable.

에어노즐의 소음저감 대책에 관한 연구

전승태,김종현,이근오 한국안전학회 2003 한국안전학회지 Vol.18 No.4

The goal of this study is to show the way to decrease the noise from air nozzles. The variables of this test are the shapes of air nozzles, air flow rate and the distance between a reflection plate and a nozzle tip. This experiment is aimed to find the most appropriate condition to minimize the noise. These are the results. If diameter ratio is more than 12:8, noise level increases by over 10 dB(A) regardless of the distance between a reflection plate and a nozzle and the existence of a reflection plate. And when L₂ of a nozzle is 5mm long, noise level rise relatively highly. So, it is strongly recommended that L₂ should be manufactured more than 10mm. The reason for a high intensity noise is that when diameter ratio is more than 12:8, the diameter of a nozzle tip(D₂) turns small drastically, which increases the air velocity. It is assumed that when the vortex is great around the spots where a nozzle hole is suddenly smaller, great turbulent flow increases much noise.

방류관거의 안정성에 대한 실험적연구

김가현,이승휘,유상호 慶南專門大學 2000 論文集 Vol.28 No.1

남사천 하류지역 홍수피해 분석 연구

김가현,이승휘,서진호,민일규,이영재 동아대학교 건설기술연구소 2000 硏究報告 Vol.24 No.1

Where no records are available at a site, a preliminary estimate may be made from relations between floods and catchment characteristics. Anumber of these characteristics were chosen for testing and were measured for those catchments where mean annual flood estimates were available. Although the improvement using extended data in regression of flood estimates on catchment characteristics was small, this may be due to the limitations of the regression model. When an individual short term record is to be extended, more detailed attention can be given; an example is presented of the technique which should be adopted in practice, particularly when a short term record covers a period which is known to be biassed. A method of extending the peaks over a threshold series is presented with a numerical example. The extension of records directly from rainfall by means of a conceptual model is discussed, although the application of such methods is likely to be limited by lack of recording raingauge information. Methods of combining information from various sources are discussed in terms of information from catchment characteristics supplemented by records, but are generally applicable to different sources of information. The application of this technique to estimating the probable maximum flood requires more conservative assumptions about the antecedent condition, storm profile and unit hydrograph. It is suggested that the profile and catchment wetness index at the start of the design duration should be based on the assumption that the estimated maximum rainfall occurs in all durations centered on the storm peak.

규칙파를 이용한 방향 스펙트럼 추정방법

김가현,이승휘,민일규,이정환 慶南專門大學 1999 論文集 Vol.27 No.1

레이저 미킹 장비 제어기 개발

방승현,강태삼,홍선기 호서대학교 반도체제조장비국산화연구센터 2001 반도체장비학술심포지움 Vol.2001 No.-

본 연구에서는 래이저 마킹 장비의 핵심 부분인 갈바노미터 제어 시스템을 구현하고, 기초적인 PID제어기를 설계하였다.주파수 응답 분석 및 시뮬레이션을 통하여 플랜트 및 제어기의 특성을 분석하였으며, 실험 결과 잡음이 있기는 하지만 기능적으로 잘 동작함을 확인하였다.