1 0 0 0 IR 元素組成から算定される小動物骨髄の速中性子吸収線量
- 著者
- 山本 修 沢田 昭三 吉永 春馬 ヤマモト オサム サワダ ショウゾウ ヨシナガ ハルマ Yamamoto Osamu Sawada Shozo Yoshinaga Haruma
- 出版者
- 日本医学放射線学会
- 雑誌
- 日本医学放射線学会雑誌 (ISSN:00480428)
- 巻号頁・発行日
- vol.23, no.2, pp.141-145, 1963-05-25
1 0 0 0 OA Effect of Tritiated Water on Growth of A Radiation-Sensitive Strain of Eseherichia coli, NG30
- 著者
- HIGO KEN-ICHI YAMAMOTO OSAMU
- 出版者
- 日本放射線影響学会
- 雑誌
- Journal of Radiation Research (ISSN:04493060)
- 巻号頁・発行日
- vol.26, no.3, pp.353-359, 1985-09
- 被引用文献数
- 2
In the presence of tritiated water (HTO), Escherichia coil NG30 was grown in sealed test tubes containing synthetic medium (M9-0.4% glucose-0.005% arginine), and cell growth was monitored by measuring medium turbidity. Catalase (60 μg/ml) was added to the medium to reduce HTO associated accumulation of H_2O_2. A positive correlation between increasing concentration of HTO in the medium and the growth suppression was seen. A similar trend was observed when cells were grown under continuous irradiation of ^<60>Co gamma-rays. The RBE of HTO beta-rays relative to gamma-rays was calculated from the accumulated doses to the cultures. It was found to be 1.7 when the growth was inhibited to 60% of the control, and increased with decreasing dose.