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이정재(Jung-Jae Lee),홍천화(Cheon-Wha Hong),송명준(Myoung-Joon Song),곽지영(Ji-Young Kwak),이열(Yeol Lee) 한국기계가공학회 2017 한국기계가공학회지 Vol.16 No.2
An experimental study has been carried out to improve the performance of a commercial abrasive blasting nozzle, by simply redesigning the nozzle"s inner contour. The analytical 1-D code, that can evaluate both the frictional effects on the nozzle inner wall and the sphericity effects of the particle, is utilized to calculate the dynamics of the particle inside the nozzle. The analytical results are compared to the experimental ones, that were obtained from images of the particle streaklines downstream from the nozzle exit. It is noted that the particle velocity at the redesigned nozzle exit increases as compared to the original commercial nozzle.
호중구감소증 환자에서의 기관-기관지 아스페르길루스증 1예
권재철,송명준,김기조,오유경,김성용,박선희,최수미,이동건,이석,신완식,김춘추 대한감염학회 2004 감염과 화학요법 Vol.36 No.1
저자들은 급성 림프구성 백혈병 환자에서 항암치료 후 호중구감소증이 지속되는 상태에서 침습성 아스페르길루스증의 드문 형태인 치명적인 아스페르길루스 기관기관지염을 경험하고 문헌고찰과 함께 증례를 보고하는 바이다. Tracheobronchial aspergillosis is an uncommon clinical form of invasive aspergillosis, particularly found in patients with AIDS and in lung transplant recipients than in other immunocompromised patients. The rapidity of the disease progression can result in fatal airway obstruction in a short period of time that the patient may need emergency tracheostomy without knowing the cause of the obstruction. We describe a case of fatal tracheobronchial aspergillosis which developed in a 43-year-old female patient with acute lymphoblastic leukemia. Dyspnea and stridor developed on the 20th day after 2nd consolidation chemotherapy, which was during the prolonged neutropenic period. Airway narrowing was observed on the computed tomograph scan of neck and emergency tracheostomy was performed. Infiltration with aspergillus hyphae was found in the tracheal ring and bronchial mucosa. Despite the use of amphotericin B, the patient died of bleeding and airway obstruction.