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송영기,서성재 ( Y . K . Song,S . Suh ) 한국열처리공학회 1997 熱處理工學會誌 Vol.10 No.3
Laser hardening for the piston ring groove of ductile cast iron was tried. Mechanical and microstructural investigation for the hardened area indicated that the laser heating technique could replace conventional induction hardening process completely and further showed that post grinding process would be eliminated by minimizing bulging of heat treated area. In laser hardening, the volume increase caused by martensitic phase transformation proved to be less than 10㎛, which insures no post machining on the hardened surface. As expected, the depth of hardening was inversely proportional to the beam scanning velocity and the highest surface hardness was obtained at the beam velocity of 0.75m/min. Heat treatment using phosphate coating demonstrated quite comparable result to the case of graphite suscepter.
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뇌졸중 후 편마비 환자에게 적용된 과제지향훈련 효과의 체계고찰 연구
송보경 ( Bo-kyung Song ),김아란 ( Ah-ran Kim ),김준수 ( Jun-soo Kim ),서성재 ( Sung-jae Seo ),손준희 ( Jun-hee Son ),신희덕 ( Hee-duck Shin ),정지원 ( Ji-won Jung ),양병일 ( Byung-il Yang ) 대한신경치료학회 2019 신경치료 Vol.23 No.2
Purpose The purpose of this study is to analyze the functional improvement through task-oriented training of stroke patients and to suggest the clinical application effect of task-oriented training through systematic review. Methods From the period of 2011 to 2016, we searched the papers which received the original text downloading service among domestic journals and theses published in e-journals. Major search terms were “task-oriented” by searching “stroke” A total of 108 papers were searched by using appropriate combinations of the words “upper extremity”, “lower extremity”, “gait”, “mental”, “sense” and “Seventeen papers were selected for inclusion and exclusion criteria. Results A total of 17 studies were classified according to body function and task performance included in the framework of occupational therapy execution system. The results were as follows: 10 studies (58.8%) on neuromuscular movement, 2 (11.8%), and 5 (29.4%) were related to daily life activities. The results of the study showed that task-oriented training was effective in improving the function of stroke patients. Conclusion Task-oriented training showed a positive change in functional recovery of stroke patients, suggesting that task-oriented training is needed for stroke patients. Therefore, in future research, it is necessary to study the task-oriented training development of stroke patients. Based on this, we will give how clinicians help occupational performance and body functions through more systemic review, and will be able to suggest evidences future intervention direction for patients following intervention effect.
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