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RISS 인기검색어
- 검색키워드
- 저자 : Koji Murai (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
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Retroperitoneal Hematoma as a Serious Complication of Endovascular Aneurysmal Coiling
Murai, Yasuo,Adachi, Koji,Yoshida, Yoichi,Takei, Mao,Teramoto, Akira The Korean Neurosurgical Society 2010 Journal of Korean neurosurgical society Vol.48 No.1
Retroperitoneal hematoma (RH) due to radiologic intervention for an intracranial lesion is relatively rare, difficult to diagnose, and can be lifethreatening. We report a case of RH that developed in a patient on anticoagulant therapy following endovascular coiling of a ruptured anterior communicating artery (AcoA) aneurysm. An 82-year-old man presented with a 12-day history of headache. Computed tomography (CT) on admission demonstrated slight subarachnoid hemorrhage, and left carotid angiography revealed an AcoA aneurysm. The next day, the aneurysm was occluded with coils via the femoral approach under general anesthesia. The patient received a bolus of 5,000 units of heparin immediately following the procedure, and an infusion rate of 10,000 units/day was initiated. The patient gradually became hypotensive 25 hours after coiling. Abdominal CT showed a huge, high-density soft-tissue mass filling the right side of the retroperitoneum space. The patient eventually died of multiple organ failure five days after coiling. RH after interventional radiology for neurological disease is relatively rare and can be difficult to diagnose if consciousness is disturbed. This case demonstrates the importance of performing routine physical examinations, sequentially measuring the hematocrit and closely monitoring systemic blood pressures following interventional radiologic procedures in patients with abnormal mental status.
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Evaluation of On-Board Ship Handling Training Using Salivary Amylase Activity
Kousaku Hama,Yui Matsuo,Koji Murai,Laurie C.Stone,Shin-ichi Wakida,Takashi Miyado,Keiichi Fukushi,Yuji Hayashi 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
In Japan, an evaluation of on-board ship handling training depends on professionals who have a lot of experience on board. This style is common for human skill practices worldwide. However, it is difficult for a cadet to understand his progress, because real ship training includes every distraction; the same case never happens in his student life. On the other hand, the knowledge is easy to learn. We are looking for an evaluation method to support instructors’teaching methods and cadets’ progress. Salivary amylase activity shows stress levels in cadets, and we can measure it for one minute. This paper shows the cadet’s and the instructor’s salivary amylase activity together and demonstrates that the salivary amylase activity is a useful index.
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Uruguay - Brazil Inland Waterway Transportation System Defining the Right Vessel
Gastó,n L. Petrocelli,Yuji Hayashi,Koji Murai,Masayoshi Kubo 한국항해항만학회 2006 한국항해항만학회 학술대회논문집 Vol.1 No.-
Within the frame of the MERCOSUR (South Common Market), one of the most important goals to achieve by its member states is a better cost effective international cargo transportation system. For this purpose the project of developing a commercial waterway linking the east region of Uruguay with the south of Brazil has been under study for a number of years now. Because of the high costs involved on the development of such waterway, the project has been indefinitely delayed. It is our intention to show an alternative way to reduce the present obstacles by using a budget oriented approach in order to determine the vessel best suited to use on the proposed waterway. So far, every study related to the project has been focused on the amount of work needed to modify the environment in order to accommodate the hardware already available in the region. The conclusions show that the cost of opening and maintaining the required navigation channel is high enough to discourage investment; the added responsibility to take care of any environmental damage incurred during the building and/or operation of the waterway makes searching for a less costly and hazardous option an interesting challenge. The proposed terminal on the Cebollatí River would be located at the heart of the Uruguayan rice growing region. Uruguay exports 90% of its rice production, being Brazil its biggest buyer. Wood chips and clinker are the other types of cargo considered to use the proposed waterway in route to either Brazil or to overseas destinations through the deep water port of Rio Grande. Through the analysis of local data by a Geographical Information System, international regulations regarding inland waterways and shallow draught vessel characteristics, we seek to propose a cost efficient alternative to apply on this particular scenario.
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