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구요한 ( Yo Han Ku ),김계훈 ( Kye Hun Kim ),김형윤 ( Hyung Yoon Kim ),정인석 ( In Seok Jeong ),정명호 ( Myung Ho Jeong ),조정관 ( Jeong Gwan Cho ),박종춘 ( Jong Chun Park ) 대한내과학회 2020 대한내과학회지 Vol.95 No.4
Kommerell diverticulum is a rare congenital anomaly of the aortic arch characterized by dilation at the proximal descending aorta, which gives rise to an aberrant subclavian artery. Kommerell diverticulum is usually asymptomatic, but can also be associated with symptoms due to compression of the esophagus or trachea, and can rarely be fatal due to dissection or rupture of the diverticulum. Here, we report a rare case of dysphagia caused by compression of the esophagus by Kommerell diverticulum originating from the right-sided aortic arch. (Korean J Med 2020;95:287-291)
인천 연안해역의 대규모 매립사업에 따른 경기만 일대의 조석특성 변화
조진훈 ( Jo Jin Hoon ),박상현 ( Park Sang Hyun ),구요한 ( Ku Yo Han ) 한국농공학회 1998 韓國農工學會誌 : 전원과 자원 Vol.40 No.6
The changes of tidal characteristics of Kyonggi-Bay Region after the Large Reclamations in the Inchon Coastal Area have been studied by the numerical modelling. The constructions of Inchon International Airport and Sihwa Seadike were considered as the main reclamation projects in this region. A two dimensional hydrodynamic model was used for this study, and it was composed in relatively high resolution with curvilinear orthogonal coordinate. As the results, at the Inchon harbor and Palmido, where a deep channel is developed, the semi tidal ranges(Z<sub>0</sub>) were decreased in 8 cm after the two reclamations. However, the Z<sub>0</sub> values in the outside of the deep channel were decreased only in 2~4 cm, so that the tidal changes in the deep channel were greater than in the outside of it. After the reclamations, the maxmum velocity was increased 17% at the Inchon harbor, however it was decreased from 1.55m/s to 1.10m/s at the Palmido. This is because the available area in which the stream may spread out was largely reduced after the reclamations. In Asan-bay region, the Z<sub>0</sub> was decreased in 5 cm at the Punyang-man and Asan-man stations located after the reclamations in Inchon coastal area. However the changes of Z<sub>0</sub> were very little at the outside of Asan-bay. In Asan-bay, the current velocity and direction were little influenced by the reclamations in Inchon coastal area.