- 著者
- 津田 良夫 石田 恵一 山内 繁 新妻 淳 助廣 那由 梅澤 昌弘 柳 大樹 岡本 徳子 沢辺 京子
- 出版者
- 日本衛生動物学会
- 雑誌
- 衛生動物 (ISSN:04247086)
- 巻号頁・発行日
- vol.64, no.3, pp.175-181, 2013-09-15 (Released:2014-03-15)
- 参考文献数
- 15
- 被引用文献数
- 1 1
The distributions and abundance of mosquitoes were examined in 2012 in rice-field areas in north-eastern Japan where the tsunami caused by the Great East Japan Earthquake in March 2011 destroyed man-made as well as natural environments completely. Three study sites were selected for the mosquito study; southern Miyagi Prefecture, and northern and southern Fukushima Prefecture. Monthly mosquito collections were conducted by CO2 traps and the density was compared between the “Tsunami” area and “No tsunami” area. A total of 8,079 adults of 12 species in 7 genera were collected and Culex pipiens group, Cx. inatomii, and Aedes albopictus were dominant. The difference in adult density between the Tsunami area and No tsunami area was still significant for the dominant mosquitoes in 2012, the 2nd year after the tsunami disaster. The adult density in 2012 was significantly lower than that in the previous year; however, Cx. pipiens group and Cx. inatomii reached a high density of 100 and 30 females per trap per day, respectively, in July or August 2012, indicating that the outbreaks of these mosquitoes occurred again in tsunami areas in 2012. Mosquito larvae were found in 22 to 57% of water bodies examined in the tsunami area.
1 0 0 0 OA ジルコニウム陰極を用いたアーク風洞による原子状酸素気流の生成
- 著者
- 松井 信 池本 智之 高柳 大樹 小紫 公也 荒川 義博
- 出版者
- 一般社団法人 日本航空宇宙学会
- 雑誌
- 宇宙技術 (ISSN:13473832)
- 巻号頁・発行日
- vol.5, pp.27-31, 2006 (Released:2006-09-30)
- 参考文献数
- 21
An arc-heater using a zirconium cathode was developed as an atomic-oxygen generator. With pre-mixed argon-oxygen injection, stable discharge was maintained for more than three hours, and the cathode erosion rate was as low as 1.7x10-5 g/s. The plume temperature and velocity distributions were measured and chemical composition and total specific enthalpy was evaluated by laser absorption spectroscopy. As a result, in the center area of the plume, the degree of dissociation in oxygen was found almost 100% with the total specific enthalpy of 4.5±0.1 MJ/kg.
1 0 0 0 OA 火星衛星探査機(MMX)のサンプルリターンカプセル設計及び開発状況
1 0 0 0 OA 再突入飛行技術向上を目的とした衝撃波管の開発
- 著者
- 山田 剛治 鈴木 俊之 高柳 大樹 藤田 和央
- 出版者
- 一般社団法人 日本航空宇宙学会
- 雑誌
- 日本航空宇宙学会論文集 (ISSN:13446460)
- 巻号頁・発行日
- vol.57, no.670, pp.426-436, 2009 (Released:2009-11-25)
- 参考文献数
- 22
- 被引用文献数
- 1 1
A free piston double diaphragm shock tube with 70 × 70mm cross-section at test section was newly developed for the purpose of investigating nonequilibrium phenomena behind a shock wave. This paper presents the performance of the shock tube and the measurement system newly developed. Experimental investigation to clarify its characteristics was conducted for various operational parameters, such a rupture pressure of the first diaphragm and initial pressures of the low pressure tube, the high pressure tube, and the compression tube. Based on the characteristics experiment, a performance map of the shock tube was obtained by changing the operation parameters. The result shows that the shock tube is capable of generating the shock layer corresponding to the super orbital reentry flight conditions. The newly developed measurement system enables us to obtain the spatial distribution of spectra behind a shock wave with high spatial and time resolution. A description of the measurement system and typical examples of the measured spectra are presented.