著者
亀田 俊和
出版者
京都大学
巻号頁・発行日
2006

文博第373号
著者
小沢 行雄 小元 敬男 八木 鶴平 米谷 恒春
出版者
独立行政法人防災科学技術研究所
雑誌
防災科学技術研究資料
巻号頁・発行日
vol.34, pp.1-20, 1978-12-20

The National Research Center for Disaster Prevention carried out a five-year hail suppression research project ending in 1972. A rocket system was developed for cloud seeding. In the system, the rocket was to be launched from a mobile launcher reaching 6000--7000m above the ground, and completely burned away in the air during its falling time after seeding. The number of effective nuclei produced by the AgI composite loaded was more than 10^<12> (per gram of AgI) at -10℃. Results of field experiments using the rockets were presented at the Seminar of Cumulonimbus Modification of Tropical Nature (Miami, USA, 15--19 Feb. 1971) and International Conference on Weather Modification (Tashkent, USSR, 1--7 Oct. 1973). Manuscripts for these are reprinted here at the end of this report, with the abstract of a paper on effectiveness measurement for the AgI composite.
著者
加藤 容三 広瀬 素尚 長谷川 典彦 片山 勲
出版者
社団法人日本材料学会
雑誌
材料 (ISSN:05145163)
巻号頁・発行日
vol.33, no.373, pp.1264-1270, 1984-10-15

Rotating bending fatigue tests were made on a quenched and tempered 0.45% carbon steel in the temperature range from room temperature to 450℃ at a machine speed of 3600 rpm. The fatigue strength σ_f at 4×10^4 to 3×10^7 cycles reached a maximum at about 350℃ due to cyclic strain aging in the same manner as the annealed material. For the quenched and tempered material the fatigue limit was clearly confirmed up to 200℃ but not observed at the peaking temperature of 350℃, while for the annealed material the fatigue limit had been confirmed even at 350℃. the fatigue strength of the quenched and tempered material was higher than that of the annealed material at every temperature, but the effect of cyclic strain aging on fatigue strength of the former was less than that of the latter. This suggests that this material shows different effect of cyclic strain aging at high temperatures when heat treated differently. The observation of fatigue crack propagation behavior revealed that the strain aging at 350℃ is more effective for the quenched and tempered material in preventing crack initiation rather than inhibiting crack propagation, contrary to the results of the annealed materials, which shows that strain aging is more effective in inhibiting crack propagation.
著者
喜田 宏
出版者
北海道大学
巻号頁・発行日
1977

博士論文

1 0 0 0 言語の科学

著者
大津由紀雄 [ほか] 編
出版者
岩波書店
巻号頁・発行日
2004

1 0 0 0 図解薬理学

著者
高木博司[ほか]著
出版者
中外医学社
巻号頁・発行日
1975
著者
岩生 成一
出版者
東京大学
巻号頁・発行日
1951

博士論文
著者
関川 行雄
出版者
オ-ム社
雑誌
OHM (ISSN:03865576)
巻号頁・発行日
vol.51, no.8, pp.31-35, 1964-07