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Karam Kang,Kwang Yoon Jung,Doh Young Lee,Jae Hyung Kim,Hye Min Han,ln Hak Choi,Seung-Kuk Baek,Hyunjung Kim 대한연하장애학회 2018 대한연하장애학회지 Vol.8 No.1
Objective: Pharyngoesophageal stricture formation and dysphagia following total laryngectomy negatively affect quality of life and result in nutritional compromise that can be successfully managed with various techniques. This study was conducted to describe our experiences of office-based balloon dilatation by transnasal endoscopy, which can be performed by an otolaryngologist. Method: The present study investigated three patients who underwent transnasal endoscopy guided balloon dilatation of pharyngoesophageal stricture. The assessment was performed based on the number of procedures and recurrences, final subjective outcomes, and complications. Result: There were no post-procedural complications. In one patient, a scarric band was found after the procedure; therefore, steroids were injected into the stricture site. There were 2–3 balloon dilatations and the interval between dilatations was 3–6 months. All patients were able to tolerate solid diet after 2 or 3 sessions. Conclusion: Transnasal endoscopic balloon dilatation, which can be easily performed by an otolaryngologist in an office setting without sedation or general anesthesia, can be a useful modality for treating pharyngoesophageal stricture after total laryngectomy. (
탄화수소계 냉매를 이용한 수냉식 히트점프의 성능특성에 관한 연구
전철호,이호생,김재돌,윤정인,Jun Chul-Ho,Lee Ho-Saeng,Kim Jae-Dol,Yoon Jung-ln 한국마린엔지니어링학회 2005 한국마린엔지니어링학회지 Vol.29 No.8
This study of the performance characteristics of natural refrigerants such as R-290 (propane), R-6OOa (iso-butane) and R-1270 (propylene) has investigated to compare with conventional HCFC's refrigerant R-22 for water-cooled heat pump system. The experimental apparatus has basic parts of cycle that uses the water as a heat source. The Performance of the water-cooled system using hydrocarbon refrigerants had been getting better than R-22 from start-up to the similar evaporating temperature after stabilizing system. Through the above it is possible that hydrocarbon refrigerants could be drop-in alternatives for R-22.