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성인에서 회장말단의 원발성 림프종에 의한 장중첩증 경험
정금오(Gum Oh Chung),강동백(Dong Baek Kang),오정택(Jung Teak Oh),조향정(Hyang Jeong Jo) 대한외과학회 2007 Annals of Surgical Treatment and Research(ASRT) Vol.72 No.3
Most intussusceptions occur in children and no etiologic factor can be determined in most cases. In contrast, adult intussusception is rare and many cases in adults are generally related to neoplasm such as lymphoma, carcinoid tumor, malignant tumor, sarcoma, benign tumor and congenital abnormalities. Intussusception in adults that’s due to primary malignant lymphoma of the terminal ileum is a rare clinical condition. We describe here two cases of ileocolonic-type intussusception that were due to primary malignant lymphoma of the terminal ileum. The clinical, radiographic and pathologic finding are described along with a brief review of the literature.
전기방사 공정 중 방사 거동에 미치는 전기전도도의 영향
오동기,김형섭,오정택,서문호,Oh, Dong-Ki,Kim, Hyung-Sup,Oh, Jung-Teak,Seo, Moon-Hwo 한국섬유공학회 2009 한국섬유공학회지 Vol.46 No.2
Electrospinning is one of the simplest methods for nanofiber fabrication. To investigate the effect of spinning solution conductivity on the spinning behavior and the web morphology, PEO was dissolved in two different solvents, $H_2O$ and ethanol. Also the conductivity of the PEO/water solution was controlled by adding NaCl. The study revealed that the spinnability became poor as the NaCl concentration increased when the applied voltage was lower than a certain level. However, the variance and the average of the fiber diameter decreased with the concentration. As the conductivity increased, the jet movement became more complex.