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      • Poster Session : PS 0831 ; Upper GI Tract : Clinical Factors to Predict Angiographically Detectable Non-Variceal Upper Gastrointestinal Bleeding in Patients Refractory to Endoscopic Treatment

        ( Tae Hwan Ha ),( Tae Hoon Oh ),( Sung In Yu ),( Min Kim ),( Jong Wook Kim ),( Won Ki Bae ),( Jae Hyung Kim ),( Seung Suk Baek ),( Mi Jin Ryu ),( Ye Na Choi ),( Ji Young Park ),( Eileen L Yoon ),( Tae 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1

        Background: Non-variceal upper GI bleeding (NVUGIB) is a common medical problem that has signifi cant association with morbidity and mortality. Angiographic detection and subsequent transarterial embolization (TAE) is a primary treatment option when medical and endoscopic treatments fail. We investigated clinical factors that could affect the success of the angiographic detection and prognosis after TAE in patients with NVUGIB refractory to endoscopic therapy. Methods: A retrospective analysis of the clinical data was done in patients with failed endoscopic treatment who underwent angiography for the treatment of acute NVUGIB between May 2002 and May 2013. Patients were divided into detection or non-detection groups according to the presence of bleeding stigmata in angiographic fi nding. Rebleeding defi ned as subsequent bleeding event within 7 days and mortality within 30days were analyzed as outcome parameters after TAE following detection in angiography. Results: A total 45 patients 37 (male, mean age, 65.9±14.9 years) were analyzed and classifi ed as a detection group (n=25, 55.5%) and non-detection group (n=20, 44.6%). Peptic ulcers were the most common cause of refractory NVUGIB. Larger transfusion amount (5.7±3.9 unit vs. 3.5±2.8 unit; P=0.03), prolonged aPTT level (34.2±17.3 sec vs. 21.8±13.8 sec; P=0.01) and short time interval between last endoscopy and angiography (17.5±25.9 hours vs. 34.3±59.5 hours; P=0.04) were found to be signifi cant factors for predicting angiographic detection. TAE was performed in all patients detected in angiography. Rebleeding (44%) was significantly associated with higher Rockall score (8.3±1.5 vs. 6.6±2.4; P=0.046) and mortality (12%) was signifi cantly associated with higher Rockall score (9.3±0.6 vs. 7.1±2.2; P=0.002) and higher level of BUN (55.3±47.4 vs. 27.6±17.4; P=0.01). Conclusions: Clinical characteristics associated with angiographic detection in patients with NVUGIB refractory to endoscopic therapy were severe bleeding, bleeding tendency and early angiographic intervention. The Rockall score is useful parameter for predicting rebleeding and mortality after TAE.

      • Switched Reluctance Motor의 진동, 소음 특성해석에 관한 연구

        정태욱,최태완,이태환 진주산업대학교 2000 산업과학기술연구소보 Vol.- No.7

        Switched reluctance motor(SRM) drive system is to be compatible for wide range adjustable speed motoring system because it has the same driving characteristics of DC series motor, easy control principle and high efficiency characteristics. By this reason, SRM drive system will be applied to many commercial adjustable speed application that requires economic advantages and high performance abilities. But, SRM drives generate large vibration and acoustic noise because it is rotated by step pulse mmf and switching commutation mechanism. This disadvantage has been obstacles to applicate SRM drives as generalized motor drive system. The main origin of vibration and noise is caused by commutation method which applies step pulse waveform mmf to stator pole and removes the mmf suddenly. This sudden variation of stator flux vibrates stator frame by radial direction and excites natural vibration mode of stator. This paper analyzes the characteristics of vibration and acoustics noise of SRM from the viewpoint of natural mode and driving coidition, and consider the reduction strategy of that.

      • 하중작용강도 변화에 따른 회전굽힘 피로특성에 관한 연구(2)

        안태환 忠州大學校 2007 한국교통대학교 논문집 Vol.42 No.-

        This study has been made investigation for the difference of fatigue strength under variable cyclic-rate, compared with three types cyclic-rate 2700cpm, 750cpm and 100cpm using smooth specimens(Kt=1.025) and center holed specimens(Kt=2.02) of SCM 440 steel were obtained through fatigue tests in the rotating. The following conclusions were obtained 1. The specimen(SCM 440) is continuously softened in the field of low cyclic rate. 2. The fatigue strength become high in case of big stress intensity factor. 3. The crack growth life become fast in high stress level. 4. The time of failure can be predicted in the same conditions.

      • KCI등재후보
      • Unity를 이용한 아케이드 미니 게임 제작

        최종운, 유태환, 김수균, 안성옥 배재대학교 공학연구소 2014 공학논문집 Vol.16 No.1

        본 논문은 Unity3D 게임엔진을 이용하여 쉽게 접할 수 있는 아케이드 형식의 미니게임을 제작하는데 목적이 있다. 우리는 미니 게임을 통하여 창의력, 반사 신경을 향상시키도록 하였고, 또한 일상생활에서 볼 수 있는 애완동물이라는 소재를 사용하여, 게임에 접근하기 어려운 사람들에게 친근감을 주게 하는 것을 특징으로 한다. 또한 랭킹 시스템을 도입하여 유저들에게 경쟁을 유도하게 하여 유저들의 게임 참가율을 증대하도록 하였다. 본 논문에서는 Unity3D 엔진을 이용하여, 게임의 개발시간을 단축하여 개발 비용을 줄일 수 있으면서도 게임의 질은 떨어지지 않도록 하였다

      • KCI등재후보
      • KCI등재

        호주의 유전자변형생물체(Genetically Modified Organisms) 안정성 심사절차 및 유전자변형식품의 표시제도

        김태산,김영미,손성한,김용환,박용환 한국국제농업개발학회 2002 韓國國際農業開發學會誌 Vol.14 No.1

        1. 호주는 GMO의 실험 및 상업화를 규제하는 신법 "유전자기술에 관한 법(Gene Technology Act 2000)을 제정 운영중임 2. GMO를 관리 감독하기 위하여 보건후생성산하에 유전자기술 감독국(Office of the Gene Technology Regulator)이 신설됨 3. GMO를 취급(dealings)형태에 따라서 면제(exemption), 위험이 매우적은 취급(notifiable low risk dealing), 면허(licensing), 등록(register)의 4가지로 분류하여 감독함 4. GM식품의 안전성 심사는 호ㆍ뉴식품청(Australia New Zealand Food Authority, ANZFA)에서 관장하며 호주식품 강령 기준 18(Standard A18 of the Australian Food Standards Code)이 근거 법임 5. ANZFA에서는 제초제 저항성 콩, 옥수수, 면화, 감자, 카놀라 등 6작물 12종의 GM작물에 대하여 식품안정성 확인을 완료함 6. 호주에서는 2001년 12월 7일부터 유전자변형식품의 의무 표시제를 시행하고 있으며 비의도적 혼입 허용치는 1%로 설정함 As Australia's new national gene technology regulatory system began on 21 June 2001, the Office of the Gene Technology Regulator (OGTR) was newly established to regulate GMO related research and GM products throughout the nation. "Gene Technology Act 2000" is the statutory basis the new regulatory system. The OGTR is within the Commonwealth Department of Health and Aged Care, responsible for overseeing the gene technology research and development including the GMO field trials across Australia. For the regulation of genetically modified food, the Australia New Zealand Food Authority(ANZFA) is responsible for developing and reviewing national food standards. All foods available for sale in Australia and New Zealand must comply with the relevant national food standards. ANZFA also responsible for carrying out safety assessments of GM foods on behalf of the Commonwealth, State and Territory Governments of Australia and the Government of New Zealand. The ANZFA's safety assessment process for GM foods is based on concepts and principles that have been developed through international organizations such as the World Health Organization(WHO) and the Food and Agriculture Organization(FAO) and the Organization for Economic Co-operation and Development(OECD). Mandatory labelling of GM foods containing either introduced DNA or protein in the final food came into effect on 7 December, 2001.

      • 조류 도입에 의한 가로수 체계 선호도 분석

        박인환,김영희,장갑수,정보광,김태호 慶北大學校農業科學技術硏究所 2007 慶北大農學誌 Vol.25 No.-

        This research to streets at Daegu, and view adjective how people react when draw a bird into interior in city utilize and examine becoming direction of street trees system. Findings on survey, citizens appear by average 2.87 in management degree of street trees and average 2.76 in various of species of trees, discontent thing more or less by average 2.91 in satisfaction of the beauty, and demonstrate high shame from satisfaction for season stuff to comparative high 3.24, generally, citizens appear by there are parts to improve by do dissatisfaction about street trees system at Daegu. Also, street trees 2 lines plantings for a bird is average 3.05, shows affirmative feedback about that shrub utilization for a bird see high numerical value by average 3.4 and people draw a bird to space of city. Therefore, construct street trees friendly to the nature and be considered to need to re-establish set street trees environment in citizens preference to recover city ecosystem. As result that examine reaction which treat in street trees planting programs to draw birds into city through view adjective, Likert scales about 2 lines plantings of street trees and additional planting of shrub show affirmative feedback by average 3.4 both ordinary people and specialist group, if people want to draw birds into city by various of method, various research should be accomplished.

      • 科學的 態度評價의 方法開發에 關한 硏究

        吳岱變,呂煥鎭 경북대학교 교육대학원 1982 논문집 Vol.14 No.-

        The scientific attitudes is divided into eight categories, that is, voluntary, positiveness, continuation, Application, Honesty, Safety, Accuracy and Objectivity. The general measuring scale and forty weiv points are suggested to evaluatl the growth of these attitudes. In this article we discussed about the results of paper tests of scientific attitudes for the elementary school pupils. It was found that the objectives are developed but the positiveness leave something to be desired.

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