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Poster Session 4 : Immunology ; Protective effect of Rebamipide against intestinal inflammation
( Yun Ha Kim ),( Jung Mu Hur ),( Kyoung Suk Kim ),( Jeong Hui Kim ),( Sang Wook Kim ),( Suck Chei Choi ),( Seong Hun Ahn ),( Won Hong Woo ),( Min Kyu Choi ),( Chang Duk Jun ),( Jay Min Oh ),( Yeun Tai 한국생화학분자생물학회 (구 한국생화학회) 2003 생화학분자생물학회 춘계학술발표논문집 Vol.2003 No.-
서정원(Seo Jung-Won),허현무(Hur Hun-Mu),권석진(Kwon Suk-Jin),구병춘(Goo Byeong-Choon) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-
Damage often occurs on the surface of railway wheel by wheel-rail contact fatigue. It should be removed before reaching wheel failure, because wheel failure can cause derailment with loss of life and property. The increase or decrease of the contact fatigue life by the metal removal of the contact surface were shown by many researchers, but it has not explained precisely why fatigue life increases or decreases. In this study, the effect of metal removal depth on the contact fatigue life for railway wheel has been evaluated by applying finite element analysis. It has been revealed that the residual stress and the plastic flow are the main factors determining the fatigue life. Finally, the contact fatigue life according to metal removal has been estimated.
이상인,김종훈,정미혜,허갑도,손성표,변상준,최세식,배무현 대한내분비학회 1993 Endocrinology and metabolism Vol.8 No.2
Myasthenia gravis (MG) is a neuromuscular transmission disorder charaterized by fatigue and weakness of voluntrary muscles. This muscular weakness is intensified by activity and stress, and improved by the use of anticholinesterase compounds. The pathogenesis is known to be an autoimmune related reduction in the number of available acetylcholine receptors at neuromuscular junction. Myasthenia gravis is usually associated with other autoimmune disorders, such as autoimmune thyroid disease, rheumatoid arthritis, SLE, pernicious anemia, Sj grens syndrome, ulcerative colitis, Eaton-Lambert syndrome. In the past reports, there were some case of hyperthyroidism associated with myasthenia gravis. But, hypothyroidism accompaning myasthenia gravis was reported rarely. So, we report a case of myasthenia gravis associated with Hypothyroidism may be due to Hashimoto's thyroiditis. (J Kor Soc Endocrinol 8:217∼220, 1993)
서정원,허현무,최재붕,김영진,Seo Jung-Won,Hur Hun-Mu,Choi Jae-Boong,Kim Young-Jin 대한기계학회 2005 大韓機械學會論文集A Vol.29 No.10
Damage often occurs on the surface of railway wheels due to wheel-rail contact fatigue. It should be removed before reaching wheel failure, because wheel failure can cause derailment with loss of life and property. The increase or decrease of the contact fatigue lift by the metal removal of the contact surface were investigated by many researchers, but they have not considered initial residual stress and traction force. The railway wheel has the initial residual stress formed during the manufacturing process, and the residual stress is changed by thermal stress induced by braking. The traction force and residual stress are operated on wheels of locomotive and electric motor vehicle. In this study, the effect of metal removal depth on the contact fatigue life for a railway wheel has been evaluated by applying lolling contact fatigue test. The effect of the traction force and metal removal on the contact fatigue life has been estimated by finite element analysis. It has been found that the initial residual stress determines the amount of metal removal depth if the traction coefficient is less than 0.15. If the traction coefficient is greater than 0.2, however, the amount of metal removal depth is independent on the intial residual stress.