@inproceedings{oai:jaxa.repo.nii.ac.jp:00013313,
 author = {増野, 陽一 and 中井, 亮佑 and 長谷川, 剛史 and 中村, 慶子 and 幸村, 基世 and 渋谷, 絵里 and 右山, 絵理 and 長沼, 毅 and 伊村, 智 and 岩月, 輝希 and 小林, 克己 and 小林, 憲正 and 三枝, 誠行 and 嶋田, 和人 and 白壁, 義久 and 高野, 淑識 and 高山, 健 and 俵, 裕子 and 橋本, 博文 and 森田, 洋平 and 保田, 浩志 and 山下, 雅道 and Mashino, Yoichi and Nakai, Ryosuke and Hasegawa, Takeshi and Nakamura, Keiko and Yukimura, Kiyo and Shibuya, Eri and Migiyama, Eri and Naganuma, Takeshi and Imura, Satoshi and Iwatsuki, Teruki and Kobayashi, Katsumi and Kobayashi, Kensei and Saigusa, Masayuki and Shimada, Kazuhito and Shirakabe, Yoshihisa and Takano, Yoshinori and Takayama, Ken and Tawara, Hiroko and Hashimoto, Hirofumi and Morita, Yohei and Yasuda, Hiroshi and Yamashita, Masamichi},
 book = {宇宙利用シンポジウム, Space Utilization Research: Proceedings of Space Utilization Symposium},
 month = {Mar},
 note = {第25回宇宙利用シンポジウム(2009年1月14日-15日, 宇宙航空研究開発機構宇宙科学研究本部相模原キャンパス), The Twenty-fifth Space Utilization Symposium (January 14-15, 2009: ISAS/JAXA Sagamihara, Japan), One of major problems in astrobiology is intense radiation, theoretical and experimental studies on biological protection and tolerance to radiation are needed. Air dried-microbial cells were irradiated with high-dose X-ray for 0 to 66,500 Gy and high-energy Fe ions for 0 to 2,000 Gy to examine their survivability based on the biological "energy currency", i.e., adenosine 5'-triphosphate(ATP), and the Most probably number (MPN). The well known radiation-resistant bacteria such as genus Deinococcus and Rubrobacter radiotolerans, highly stress-resistant spore former family Bacillaceae and radiation-sensitive Escherichia coli strains were used for this experiment. Irradiation of synchrotron X-ray (0.2 nm) at a high dose rate of 4.4 Gy/s (500 R/s) was done at KEK Photon Factory. All species showed exponential decrease in MPN against total dose. However, celluar ATP showed little decrease at low dose and linear (or exponential) decrease at high dose. Genus Deinococcus and Rubrobacter radiotolerans showing survival at 67 kGy, was more than 60 times resistant compared with normal E. coli. Irradiation of 500 MeV Fe ion at a dose rate of 0.172 Gy/s (2.5 x 10(exp 8) particles/s) was done at NIRS HIMAC. Generally similar results to X-ray irradiation were observed, but some genus Deinococcus and Rubrobacter radiotolerans showed no decrease at total dose 2000 Gy. And celluar ATP showed no decrease against to the dose. More biomacromolecule should be used in future study., 形態: カラー図版あり, 資料番号: AA0064297069},
 publisher = {宇宙航空研究開発機構宇宙科学研究本部, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)},
 title = {大線量X線およびFeイオン照射に対する放射線耐性微生物の生残に関する予察的研究},
 volume = {25},
 year = {2009}
}