著者

米津 啓子 佐々木 博幸 長尾 剛司 中尾 潤一 西原 雄次 正木 伸城 黒木 聖司

出版者

一般社団法人日本機械学会

雑誌

年次大会講演論文集

巻号頁・発行日

vol.2003, pp.353-354, 2003

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This paper reports about CubeSat that is developing at SokuUniversity. Shooting the photos of earth and transmission of our song to ground station are the main mission. The operating frequency is in the amateur communication band. A UHF (f=430MHz) band will be used for the downlink, and a VHF (f=144MHz) will be used for the uplink. We've already developed TNC (Terminal Node Controller) for downlink at ARLISS2002. Feature of the Soka University Satellite is using FPGA (Field Programmable Gate Array) for control equipments. Advantages of using FPGA are design flexibility, small size, high speed processing and flight proven. You can have almost any logics in FPGA. Also you can have CPU in FPGA. There are reasons why we selected it for our CubeSat.

著者

松本 勝美 滝本 洋司 正木 伸 中谷 進

出版者

The Japan Neurosurgical Society

雑誌

Neurologia medico-chirurgica (ISSN:04708105)

巻号頁・発行日

vol.26, no.6, pp.491-494, 1986-06-15 (Released:2006-09-21)

参考文献数

31

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A case of thrombosis of the dural sinus resulting in hydrocephalus is reported. This 60-year-old female had suffered from chronic right otitis media for 40 years. Recently she suddenly developed headache, vertigo and vomiting. The otitis media was treated surgically and with antibiotics. Thrombosis of the right sigmoid sinus was found at the time of operation. Headache persisted after the operation. Postoperative computed tomography (CT) scan showed ventricular dilatation and periventricular lucency. Cerebral angiography revealed stenosis of the superior sagittal sinus, the straight sinus, the right lateral sinus, and the right sigmoid sinus. After a ventriculo-peritoneal shunt operation, her symptoms and hydrocephalus were alleviated. It was suggested that hydrocephalus in this case was induced by sinus hypertension associated with dural sinus thrombosis secondary to recurrent otitis media. This phenomenon is known to occur usually in infants, but rarely in adults. Possible mechanisms accounting for the development of hydrocephalus secondary to sinus hypertension are discussed.

著者

正木 伸之 岡本 尚

出版者

樹木医学会

雑誌

樹木医学研究 (ISSN:13440268)

巻号頁・発行日

vol.4, no.1, pp.45, 2000-03-31 (Released:2021-02-17)