http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김홍주 ( H. J. Kim ),최문석 ( M. S. Choi ),김영호 ( Y. H. Kim ),손희정 ( H. J. Son ),이준혁 ( J. H. Lee ),이종균 ( J. K. Lee ),이규택 ( K. T. Lee ),김재준 ( J. J. Kim ),고광철 ( K. C. Koh ),배승운 ( S. W. Paik ),이종철 ( J. C. Rhee ) 대한소화기학회 2002 대한소화기학회 춘계학술대회 Vol.2002 No.-
<목적> 최근에 간암의 진단 및 병기결정에 SPIO(superparamagnetic iron oxide)-MRI의 유용성이 보고되고 있다. 본 연구에서는 수술을 계획하고 있는 환자들에서 시행하는 SPIO-MRI의 간내결절 진단능력을 평가하고, 수술후의 병리조직학적 소견과 추적검사상 발견되는 재발결절들을 비교하여 SPIO-MRI의 수술전 병기결정능력 및 위음성율을 평가하고자 하였다. <방법> 1999년 12월부터 삼성서울병원에서 3상나선상 CT 및 SPI
이준혁(J. H. Lee),박태조(T. J. Park),김현석(H. S. Kim),김병우(B. W. Kim) 유공압건설기계학회 2013 유공압건설기계학회 학술대회논문집 Vol.2013 No.6
In mechanical components such as hydraulic cylinder, bearing and automation equipment, various types of elastomeric seals are widely used to protect leakage of lubricant or working fluid and to prevent ingression of foreign particles into the system. In this paper, a rectangular shaped reciprocating rubber seals is modeled to investigated the sealing and lubrication characteristics using a fluid-structure coupled software. For instance pressure difference, sliding speed and its direction, the hydrodynamic pressure distribution in the sealing surface, film shape, leakage flow rate between piston rod and seal are showed.
이준혁(J. H. Lee),이준오(J. O. Lee),박태조(T. J. Park) 유공압건설기계학회 2012 유공압건설기계학회 학술대회논문집 Vol.2012 No.6
O-ring seal is widely used in various mechanical devices to prevent mainly leakage of working fluid and incursion of foreign particle. When O-ring is used as a piston seal, the sealing performances are determined by various design parameters such as initial interference, fluid pressure and the clearance gap between piston and cylinder. In this paper, a nonlinear problem solver, MARC, is adopted to analyze the effect of piston eccentricity and fluid pressure on the deformation characteristics of O-ring seal. The results show that the eccentricity of piston can reduce highly the ability of the seal, and then cause easily leakage of fluid.