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박강식 대한흉부심장혈관외과학회 1979 Journal of Chest Surgery (J Chest Surg) Vol.12 No.2
This is a report of a case of superior vena caval syndrome due to idiopathic mediastinal fibrosis, which was surgically treated. The patient was 35-year-old Korean male who progressively complained shortness of breath about for 40 days prior to operation. Phlebogram of SVC showed indentation of SVC at the site of cavoatrial junction. The operation was performed under impression of bronchogenic cancer of right hilum. After thoracotomy, it was found a irregular mass in the mediastinum at the level of cavoatrial junction, which was developed to surrounding with SVC, pericardium, trachea and bronchus and they fixed together to immobile. Bypass graft between SVC and right atrial appendage was performed using a pericardial roll tube This is a report of a case of superior vena caval syndrome due to idiopathic mediastinal fibrosis, which was surgically treated. The patient was 35-year-old Korean male who progressively complained shortness of breath about for 40 days prior to operation. Phlebogram of SVC showed indentation of SVC at the site of cavoatrial junction. The operation was performed under impression of bronchogenic cancer of right hilum. After thoracotomy, it was found a irregular mass in the mediastinum at the level of cavoatrial junction, which was developed to surrounding with SVC, pericardium, trachea and bronchus and they fixed together to immobile. Bypass graft between SVC and right atrial appendage was performed using a pericardial roll tube [$1.3{\times}5$ cm]. After that SVC was decompressed very well. SVC pressure was markedly reduced from 32 cm $H_2O$ in preoperative to 21 cm $H_2O$in postoperative. Mediastinal fibrosis was confirmed by histopathological examination postoperatively. The postoperative course was uneventful.
박강식 대한흉부심장혈관외과학회 1979 Journal of Chest Surgery (J Chest Surg) Vol.12 No.1
This is a report of a case of tuberculous esophageal perforation, which was surgically treated.. The patient was 32-year-old Korean female patient, who complained swallowing difficulty for` 4 weeks duration. Esophagogram was shown irregular filling defects in the upper one third of esophagus, about 4 cm in length. It was noticed that a small amount of contrast media was leaked out from the involved area of esophagus into the right mediastinum. It was highly suggested that abscess formation was due to perforation of esophageal cancer. Esophagoscopy revealed no definitive evidence of perforation of esophagus, but punch biopsy specimen of esophageal mucosa was shown acute and chronic inflammatory changes. Operation was performed under impression of esophageal cancer. In the right-sided upper mediastinum, a walnut-sized abscess cavity which was connected with esophagus through a fistulous tract was noted. A portion of cavity submitted for frozen section was shown tuberculous inflammation. The abscess cavity, fistula tract, and involved esophageal wall were removed. The perforated esophagus was closed layer by layer. The tuberculous changes were confirmed by histopathologic examination postoperatively. The postoperative course was uneventful.
박강식,박영관,김근호,Park, Kang-Sik,Park, Yeong-Gwan,Kim, Geun-Ho 대한흉부심장혈관외과학회 1978 Journal of Chest Surgery (J Chest Surg) Vol.11 No.1
This is a report of a chylous cyst in the mediastinum found in a 61 year old Korean female patient who suffered from mild swallowing difficulty and right chest discomfort. These symptoms had developed 5 years previously when chest P-A view showed thumb-tip sized mass shadow in right mediastinum, just right to ascending aorta. Esophagogram revealed an indentation of midesophagus. Follow up checks showed growing mass shadow which suggested aneurysm of ascending aorta. On admission chest X-ray revealed a well circumscribed infant head sized mass density along the right heart border and middle mediastinal border, and extended near to the middle clavicular line in right chest cavity. Aortogram revealed no relationship between the mass and aorta. Right thoracotomy was performed under impression of mediastinal tumor. There was a large cyst containing 700 cc of milky fluid. There was no connection to the thoracic duct nor adjacent organs. The fluid was analyzed chemically and identified the fluid as chyle. The origin of the isolated chylous cyst was uncertain postoperative course was uneventful.
박강식,김석중 국제지역학회 2009 국제지역연구 Vol.13 No.2
우리나라 해외건설은 현재 연간 수주액이 400억 달러 내외에 달하는 재도약기를 맞았다. 어떤 성장내용과 성장요인으로부터 이러한 재도약이 달성되었는지를 밝히는 것이 이 글의 핵심이다. 그 성장내용을 보면, 첫째, 중동지역 수주가 차지하는 비중이 거의 절대적이다. 둘째, 공종별로는 토목과 건축 위주에서 산업설비 중심으로 전환하고 있다. 셋째, 수주형태별로는 원청 단독 위주에서 최근에는 해외개발사업 참여 등을 위해 합작수주를 확대하고 있다. 넷째, 발주형태별로는 최근에 공개경쟁과 개발형을 늘림으로써 발주재원, 발주조건, 발주공종에서 다양화되는 발주형태에 대응하고 있다. 한편, 그 외적인 성장요인으로는 고유가 지속에 따른 중동석유수입의 확대, 중동지역에서 산업설비 위주의 발주량 급증을 들 수 있고, 국내적으로는 우리업체의 기술력 향상, 우리나라 내수시장의 장기침체임을 규명하였다. Korean overseas construction contracts reached 40 billion dollars in 2008. In this paper, the economic factors of "the record high growth since 1980's 'overseas construction boom' is investigated. Firstly, most of the contracts were made in the Middle East OPEC countries which made large scale construction investments with the increasing oil revenues... Secondly. large portion of the contracts is heavy industrial plants, in which Korean construction firms have enjoyed comparative advantages. Thirdly, Korean construction firms have been forced to pay attention to the overseas markets, due to the domestic slump of the construction industry
FRP 복합절연재료의 유전특성에 미치는 염수처리의 영향
박강식,한상옥,김종석,조한구,이덕출,Ichikawa, K. 한국전기전자재료학회 1997 電氣電子材料學會誌 Vol.10 No.1
The purpose of this paper is to evaluate FRP rod for aging, which exposed to salt water and pure at elevated temperature. Dielectric constant and tan .delta. on time and frequency domain were tested to observe how rapidly the FRP rod aged. Dielectric constants of FRP rods with treating time were slightly increased. That of FRP rods with frequency, However, showed strongly the effects of large relaxation time estimated from interfacial polarization a or ionic. It is obvious that absorbed water affects to dielectric and electric properties of FRP with increasing the treating time.