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황성미,장지수,권형기,유재인,이수경,이재준,임소영 대한마취통증의학회 2011 Anesthesia and pain medicine Vol.6 No.3
Airway management in the emergency department is one of the most important responsibilities of the emergency physician and often involves cooperation with anesthesiologists and trauma surgeons. A 21-year-old woman was transferred to our emergency department for urgent trauma management following a motor vehicle accident. Her face was severely edematous, and her lower maxilla, including the alveoli, was separated from the upper maxilla. She was diagnosed with a Le Fort I fracture with a basal skull fracture. She also had epistaxis and oral bleeding. Her airway was difficult to manage; however, our trauma team, including anesthesiologists,managed her airway successfully in the emergency room. (Anesth Pain Med 2011; 6: 303∼305)
Difficult tracheostomy tube placement in an obese patient with a short neck -A case report-
황성미,장지수,Jae In Yoo,Hyung Ki Kwon,이수경,이재준,임소영 대한마취통증의학회 2011 Korean Journal of Anesthesiology Vol.60 No.6
We report a difficult case of tracheostomy in a 34-year-old obese woman with a short neck. The tracheostomy tube placement repeatedly failed because of anatomical changes due to obesity and a short neck, tracheal mucosal swelling due to prolonged intubation, and unexpected false passage; however, it was successfully performed using an endotracheal tube exchanger as a guidewire.
Two-Band 모델을 이용한 작은 밴드 갭을 가진 Fe(Se1-xTex)2 열전합금의 전기적 수송 특성 분석
황성미,김상일,허민수,이기영,양희선,서원선,김현식 대한금속·재료학회 2023 대한금속·재료학회지 Vol.61 No.2
Environmentally sustainable thermoelectric technologies can be more broadly applied in industriesonce the performance of thermoelectric materials is improved. Several approaches have been proposed toimprove the electronic transport properties of thermoelectric materials. The effects of each approach on theelectronic properties can be evaluated by changes in the band parameters. The Single Parabolic Band (SPB)model has been widely used to determine the effect of different materials engineering strategies on bandparameters, such as the density-of-states effective mass and deformation potential. However, when thematerial has a narrow band gap, the Two-Band (TB) model better describes the changes in band parameters,as it includes the bipolar conduction from the minority carrier band. Here, the band parameters of previouslyreported Fe(Se1-xTex)2 (x = 0, 0.2, 0.6, 0.8, 1) alloys, whose band gap significantly decreases with x, have beenestimated using the SPB and TB models. While the x-dependent band parameters obtained via the SPB modelvaried abruptly with x, all the band parameters estimated by the TB model changed linearly with x. Theabruptness observed in the band parameters of the SPB model can be attributed to artifacts reflected in thesingle band, which occurs when the minority carrier band and band gap change are not included. The bipolarthermal conductivity of Fe(Se1-xTex)2 alloys was also calculated using the TB model, and is understood in termsof changes in the weighted mobility ratio, Hall carrier concentration, and band gap in terms of alloycomposition, x.