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후관철낭 스트레청이 유착성 견관철낭염 환자의 관절가동범위,장애,통증에 미치는 효과
홍승우,박가혜,송유미,오만수,이진화,정가희,정주현,추연기,김난수 대한스포츠물리치료학회 2010 정형스포츠물리치료학회지 Vol.6 No.1
Background: The purpose of this study was to examine the effects of posterior capsule stretching on range of motion , disability and pain in patients with shoulder adhesive capsulitis. Method: The subjects of this study were 26 patients. The subjects were divided into two group(experimental group n = 16, control group n = 1 .. 80th group were treated 3 weeks. Shoulder range of motion and pain were measured by goniometer and VNRS(verbal numerical rating scale). Disability were assessed by questionnaire. The collected data analysed by paired T -test and independent T -test. Results: The experimental group significantly improved shoulder range of motion, pain and disability, but control group significantly improved only shoulder external rotation. Conclusion: The results showed that posterior capsule stretching were effective in improving shoulder range of motion, pain and disability in patients with shoulder adhesive capsulitis.
후관절낭 스트레칭이 유착성 견관절낭염 환자의 관절가동범위, 장애, 통증에 미치는 효과
홍승우,박가혜,송유미,오만수,이진화,정가희,정주현,추연기,김난수 대한스포츠물리치료학회 2010 정형스포츠물리치료학회지 Vol.6 No.1
Background: The purpose of this study was to examine the effects of posterior capsule stretching on range of motion , disability and pain in patients with shoulder adhesive capsulitis. Method: The subjects of this study were 26 patients. The subjects were divided into two group(experimental group n = 16, control group n = 1 .. 80th group were treated 3 weeks. Shoulder range of motion and pain were measured by goniometer and VNRS(verbal numerical rating scale). Disability were assessed by questionnaire. The collected data analysed by paired T -test and independent T -test. Results: The experimental group significantly improved shoulder range of motion, pain and disability, but control group significantly improved only shoulder external rotation. Conclusion: The results showed that posterior capsule stretching were effective in improving shoulder range of motion, pain and disability in patients with shoulder adhesive capsulitis.
1차원 열 유동 시뮬레이션 프로그램을 이용한 대형 CNG엔진의 축 출력 및 열 회수량 예측
김기현(Kihyun Kim),장진영(Jinyoung Jang),배충식(Choongsik Bae),최재준(Jaejoon Choi),오만수(Mansoo Oh),김동명(Dongmyung Kim) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
CNG(Compressed natural gas) is very attractive fuel as alternative of gasoline and diesel. In order to meet stricter emission regulation on NOx and PM(PM; particulate matter), CNG has been applicated to heavy duty engine class. This study was anlysis of effects of fuel injection system on power and heat transfer rate. Two type of engine models were used to perform this study. First thing was a air-mixer type and second was the In-cylinder direct injection type using injector. Model which simulates Heavy duty 16 cylinder 48 L CNG engine was made for simulation. It is including flow line of intake and exhaust, cylinder, ambient and turbocharging system. Basic theory is 1-dimensional heat flow dynamics. Model can be validated by using spec of the real engine system. Additionally direct injection system was applied to model instead of air-mixer type fuel system. As parameters for simulation, intake pressure and equivalence ratio are selected. The result is concluding the difference between two systems was about 10% in volumetric efficiency in all range of operation. The conditions of mixture in intake and compression process between two systems were slightly different . In-cylinder direct injection system could make higher peak power and peak heat transfer rate than those of mixer type. Total system efficiency was also higher in case of In-cylinder direct injection system.
증기분사 재생 가스터빈 시스템의 성능 및 최적 운전조건에 관한 연구
김경훈(Kyoung Hoon Kim),김동주(Dong Joo Kim),박상희(Sang Hee Park),오만수(Man Soo Oh),김동명(Dong Myung Kim) 한국추진공학회 2010 한국추진공학회지 Vol.14 No.1
The system performance of the regenerative gas-turbine cycle with the steam injection into the combustor has been studied through the thermodynamic cyclic analysis. The effects of the pressure ratio, the steam injection ratio, the ambient temperature, and the turbine inlet temperature are investigated on the thermal efficiency, the fuel consumption, and the specific power as well as the operating conditions for the maximum thermal efficiency of the system. The results of the present analysis find that the use of steam injection in the regenerative gas-turbine system can greatly enhance the thermal efficiency and the specific power of the system.
이홍기(Lee, H. G.),김동언(Kim, D. E.),서형석(Suh, H. S.),한홍식(Han, H. S.),정영규(Jung, Y. G.),이월우(Lee, W. W.),박기현(Park, K. H.),정진화(Chung, C. W.),임민수(Lim, M. S.),오만수(Oh, M. S.) 한국신재생에너지학회 2005 한국신재생에너지학회 학술대회논문집 Vol.2005 No.06
포항풍력에너지연구소와 (주)보국전기는 에너지 관리공단의 지원으로 2002년부터 직접구동형 풍력터빈( KBP-750D) 에 사용될 발전기 개발을 시작하여 2005년 3월 개발을 완료하였다. KBP-750D에 사용되는 발전기는 증속을 위한 gearbox를 사용하지 않는 직접 구동형이고, 영구자석을 사용하여 여자하는 형식이다. 이런 특징은 풍력발전에서 요구하는 주요 요구조건인 고 효율, 고 신뢰성을 만족시키기 위해서 매우 중요하다. 개발된 발전기는 25 rpm 에서 800 kW의 정격을 가지도록 설계되었다. 공극 직경은 3,320mm 이며, stator의 길이는 705mm, 공극은 4.5mm 이고, 극수는 84이다. 또한 전체 중량은 약 22 ton이다. 이 논문에서는 발전기의 물리설계, 공학설계, 제작 및 시험결과에 관해서 기술한다.