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안경록 ( Kyoung Rok Ahn ),장인복 ( In Bok Chang ),류경식 ( Kyung Sik Ryu ),조병문 ( Byung Moon Cho ),오세문 ( Sae Moon Oh ),박세혁 ( Se Hyuck Park ) 대한뇌종양학회·대한신경종양학회·대한소아뇌종양학회 2005 대한뇌종양학회지 Vol.4 No.2
We report a case of meatstatic choriocarcinoma mimicking systemic necrotizing vasculitis on cerebral angiogram. A 35- year-old female presented with right side hemiplegia and drowsy mental status. Computed tomography(CT) scan revealed an intracerebral hemorrhage in the left frontal region. Cerebral angiogram showed multiple microaneurysms arising from the bilateral anterior cerebral artery and middle cerebral arteries. Renal angiogram showed multiple microaneurysms arising from the left distal renal artery. Chest CT scan revealed multiple metastatic lesions in the left lower lung field. The hematoma and microaneurysms were surgically removed. Choriocarcinoma was diagnosed on histologic examination. Despite of postoperative chemotherapy, she died 1 month after operation.
최정열(Choi Jung Youl),박균서(Park Kyun Seo),류중열(Ryu Joong Youl),박정근(Park Jeong Gun),류경식(Ryu Kyoung Sik),박용걸(Park Yong Gul) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-
The major objective of this study is to investigate the dynamic behaviors of track due to the deterioration characteristics of ballast for servicing tracks by the field test. The durability of ballast plays an important role in the track behaviour. To estimate the deterioration characteristics of ballast, several tests have been carried out by several scholars. The deterioration characteristics of ballast is one of the most important factor in the dynamic behaviour of track and its life. In this paper abrasion/breakage characteristics of ballast is studied to predict the effect of physical ballast characteristics on ballast track. To reveal deterioration characteristics of ballast, the field test were carried out. The deterioration characteristics, studied in this paper, is applied to the dynamic behaviour of track in various conditions.
도시철도 시험선 구간에서의 포장궤도 시험부설 및 성능평가
이일화(Lee Il-Wha),심재규(Shim Jae-Gyu),이춘호(Lee Choon-Ho),박균서(Park Kyun-Seo),류경식(Ryu Kyoung-Sik) 한국철도학회 2007 한국철도학회 학술발표대회논문집 Vol.- No.-
Recently, the development of the paved track is required as a low-maintenance of conventional line. The main reason is that the line capacity and bearing of track are increased progressively. The important factors of paved track are stability and applicability. To be based on this subject, Cement Mortar Pouring(CMP) paved track is developed. CMP paved track is a kind of ballast reinforced track using the prepacked concrete technique. The most important thing to design the paved track is to optimize the track structure considering various conditions. In this study, the CMP track is constructed(30m) on a test line and the track performance tested by running train to evaluation the capability and workability. The track performance are tested to confirm the vibration acceleration of the car body, wheel and track, accumulated settlement, track irregularity and crack of surface.