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탄소섬유쉬트 보강 철근콘크리트보의 휨 설계법에 관한 연구
황진석,임서형 진주산업대학교 건설기술연구소 1998 건설기술연구소보 Vol.1 No.-
This paper deals with the flexural behaviors and design method of R.C beams strengthened by carbon fiber sheets. The behaviors of strengthened beams which were preloaded are compared with that of a beam which was not preloaded. The structural behaviors of strengthened beams are compared with flexural theory and current codes. According to the results, it is shown that strengthening of damaged beams is structurally efficient and that the strength of the strengthened beams are improved. The composite action between concrete and CFS are preserved after strengthening regardness of preloading. And, it is shown that the behavior of strengthened beams follow simple laws of mechanics and can be predicted by codes.
뿜칠 시공에 의한 벽체 마감 모르터의 부착강도에 관한 연구
임서형,황진석 진주산업대학교 건설기술연구소 1998 건설기술연구소보 Vol.1 No.-
This study is aimed to identify the property and condition of the bond of mortar in accordance with the kind of surface by extracting the optional mixing of mortar and the ratio of water to cement in the execution of spray coat work. The conclusion was summarized as follow. In case the ratio of water to cement mortar is 45 percent, its good strength of bond can not be expected as the workability required of the execution of spray coat works is not assured. In case of the mortar with the ratio of cement to sand of 1:2, the higher the ratio of water to cement becomes, the lower the strength of its bond becomes. But, in case that the ratio of cement to sand is 1 to 3, the higher the ratio of water to cement becomes, the stronger the strength of its bond becomes. The bond strength of spray-coated mortar in accordance with kind of surface materials was shown to be in orders of the cement brick surface. concrete surface using plywood form, and concrete surface using steel form.
황진석,임서형 진주산업대학교 건설기술연구소 1998 건설기술연구소보 Vol.1 No.-
This paper deals with the flexural behaviors and design method of R.C beams strengthened by steel plates. The behaviors of strengthened beams which were preloaded are compared with that of a beam which was not. The structural behaviors of strengthened beams are compared with codes of strength design method. According to the results, it is shown that strengthening of damaged beams is structurally efficient and that the performance of stiffness and strength of the strengthened beams are improved. The composite action between concrete and steel plates are preserved. And it is shown that the behavior of strengthened beams follow simple laws of mechanics and can be predicted by codes on strength design method.
임서형,황진석 진주산업대학교 건설기술연구소 1998 건설기술연구소보 Vol.1 No.-
The purpose of this study is to present data on the optimum planning and construction of aluminum curtain wall to apply high-rise buildings for improving planning and construction by performance test of aluminum curtain wall. From the results of study, the conclusion can be summarized follow. Air leakage can be diminished 3.5∼4 times in quantity and leak of water can be prevented by sticking the mullion and the silling part of sash with adhesive tape and vinyl. The leak of water through weep whole can be prevented by making the first seal and secondary membrane sheet on the contacting part of aluminum and other materials, planning the hole to cross each other in case of flowing backward of water by wind. It id identified as increasing structural steadiness by reforming projection window hand strike, reinforcing mullion fastener, reinforcing heat-treated mullion aluminum sash heat, and reinforcing bolt and nut of mullion and fastener by welding.
개심술(開心術)의 임상적 고찰 : 치험 200예 200 Cases
최형호,서홍주,임영혁,김정중,배대양,이석기,임진수 조선대학교 부설 의학연구소 2002 The Medical Journal of Chosun University Vol.27 No.2
Background and Objectives: Two hundred cases of the open heart surgery due to congenital and acquired heart disease were done using the cardiopulmonary bypass in the Department of Thoracic and Cardiovascular surgery, Chosun University Hospital from November, 1980 to June, 2001. Material and Methods: The number of congenital heart disease was 132 cases. 68 cases were acquired heart disease. 'The age of the congenital heart disease was from 22 days to 45 years. In the acquired heart disease, the age was from 14 to 72 years. Result: Congenital heart disease consisted of 113 congenital acyanotic heart disease, 19 congenital cyanotic heart disease. Corrective operation was done for congenital heart disease with 4. 5 % operative mortality. Of 68 cases acquired heart disease, 44 patients were valvular heart disease, 3 cardiac tumors, 9 ischemic heart diseases, 12 aortic dissections and etc. The operative mortality was 13%. Conclusion: The postoperative complications were appeared in 68 cases and the complications were wound infection, occipital alopecia, low cardiac output syndrome, arrhythmia, septicemia etc. The mortality after open heart surgery was 15 cases and the causes of death were low cardiac output syndrome, septicemia, respiratory failure and left ventricle rupture.
최영호,서홍주,임영혁,김정중,박성강,이석기,임진수,김은규 조선대학교 2001 The Medical Journal of Chosun University Vol.26 No.2
Pulmonary blastoma is a very rare primary neoplasm of the lung. We experienced a case of pulmonary blastoma in a 40 years old man. The mediobasal segmentectomy of the right lower lobe was performed. The patient was discharge on the postoperative days 6. There is no evidence of recurrence or metastasis on followup study during 7 months period after operation.