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김원석 ( W. S. Kim ),이기명 ( K. M. Lee ),차충근 ( C. K. Cha ),김덕기 ( D. K. Kim ),김영배 ( Y. B. Kim ),유병무 ( B. M. Yoo ),김진홍 ( J. H. Kim ),김영수 ( Y. S. Kim ),조성원 ( S. W. Cho ),함기백 ( K. B. Hahm ) 대한소화기학회 2002 대한소화기학회 춘계학술대회 Vol.2002 No.-
위암의 발생에 관여하는 종양 억제 유전자로는 p53이 잘 알려져 있으며, 주요 작용 기전 중의 하나가 apoptosis 장애 및 cell cycle 조절 실패로 보고되고 있다. 그러나 위암에서 p53의 변이는 30-65% 정도로 보고되고 있어 나머지 위암에서 발암 기전은 의문으로 남아있다. 최근에는 pS2/TFF1 단백질의 변이가 암화의 초기에 관여한다는 사실과 pS2/TFF1 knockout mice에서 위암의 발생되었다는 보고로 위암 발생시 pS2/
74리터 FCV용 라이너 개발을 위한 2단계 정역드로잉 금형설계
이승윤(S. Y. Lee),강성훈(S. H. Kang),김준현(J. H. Kim),김덕기(D. K. Kim),김병민(B. M. Kim) 한국소성가공학회 2010 한국소성가공학회 학술대회 논문집 Vol.2010 No.10
In this work, finite element simulations were carried out to investigate the effect of the die design in the two-stage reverse drawing process on the formability for manufacture of 74 liter aluminum liner used in fuel cell vehicle. For this, Cockroft and Latham ductile fracture criterion was employed for the purpose of predicting fracture occurrence according to the die design. In order to prevent the wrinkle or fracture during drawing process, the effects of drawing-ratio, punch and die corner radii, holding force were analyzed. Through the FE investigation, die design and reasonable blank holding force were provided to prevent the fracture and wrinkle. In addition, one of experimental results with fracture was shown when the unsuitable die design was adopted.
侖承熙,金德起,金忠泰 경희대학교 체육대학 한국체육과학연구소 1980 體育學論文集 Vol.8 No.-
Assuming an attempt to happen many external Wounds during raching and practicing this study was conducted and analiged with the following results about the kinds of the external wounds, the location of the external wounds, and their cause and treaments to be cared. 1. From 11 locotions of human body to the external wounds except head, abdomen, upper arms, fore arms and hands have been shown 70 coses. 2. The sorts of the external wounds were sprain, dislocation, fracture, contusion, muscle pain, obrasion and tendon rupture. 3. The most frequent sort of external wound is muscle pain (45.7%). next fequent sort of external wound in sprain (21.4%) and the least is facture (1.4%). 4. The causes of the external wounds were their own mistakes and idleness, (41 person 77.1%) unavoidable causes (9 person 17.2%) mistakes of athers (3 person 5.7%) whien Were due to ignorance plenty of exereise and Warming up that should be needed plenty of exercise according to the plan before the Trach and Field.
김기환,김덕기,최봉각,신창섭 한국산업안전학회 1998 한국안전학회지 Vol.13 No.1
Malodorous gases give discomfort and harm to laborers and residential neighborhoods and therefore, the removing odor materials emitted from plants and industrial facilities is important subject. The main ingredients of alkali odor are NH₃ and CH₃SH. The adsorption characteristics of odors were studied using four different activated carbon fibers(ACF) and active carbon(AC). Alkali odor was removed by using ACF impregnated with H₃PO₄ and H₂SO₄ and treated with HNO₃ and NaOH. The experimental result showed that ACF has a higher removal efficiency than AC. The adsorption capacity was increased with the impregnation and surface treatment, and H₂SO₄ was the best impregnant for the removal of alkali odor.