著者

保田 浩志

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.46, no.3, pp.232-235, 2011 (Released:2012-07-28)

参考文献数

2

被引用文献数

1

著者

大学等教員協議会・ 編集委員会

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.53, no.3, pp.195-196, 2018 (Released:2018-11-27)

著者

仲宗根 峻也 城間 吉貴

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.53, no.3, pp.185-188, 2018

著者

工藤 ひろみ 床次 眞司 細田 正洋 岩岡 和輝 葛西 幸彦

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.51, no.2, pp.92-97, 2016

被引用文献数

2

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On 11 March 2011, a 9.0 magnitude earthquake, which occurred at Northern Japan, and subsequent tsunami caused serious damage to the Fukushima Daiichi Nuclear Power Station (FDNPS). People living within a radius of 30 km were evacuated from their homes. Residents of Namie Town stayed for several days at a location 30 km northwest of the FDNPS. However, as a highly concentrated radioactive plume passed over this location, the evacuees are very much worried about their radiation exposure. On the other hand, there are several nuclear facilities in Aomori Prefecture. Such circumstances may produce concerns among people regarding an increased risk of cancer or other radiation-induced disease. In this study, focusing on the citizens of Namie Town and Aomori Prefecture (Hirosaki, Aomori and Hachinohe Cities), their understanding of basic knowledge on radiation was investigated through anonymous questionnaires. The present study has revealed that people recognized that they are exposed to natural radiation of more than 1 mSv, Despite this fact, however, people in Namie Town believe even radiation of 1 mSv will cause them some biological effects. Although basic general knowledge on radiation should be provided, a reliable relationship between the general public and experts also needs to be established.

著者

高畠 賢 砂押 正章 川口 勇生

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.51, no.1, pp.70-74, 2016 (Released:2016-07-06)

参考文献数

11

被引用文献数

1

著者

仲宗根 峻也 石津 裕二 池本 憲弘 城間 吉貴 赤田 尚史 田中 将裕 古川 雅英

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.53, no.2, pp.65-71, 2018

被引用文献数

1

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In this study, to estimate the recent tritium concentration and its variation with latitude and time in Japan, environmental water samples were taken monthly from June 2014 to October 2016 in Okinawa Island, subtropical region of Japan. The inland water samples were taken from two springs and the drop water samples were taken in a limestone cave. The samples were distilled to remove impurities and then electrolysed using electrolytic enrichment system. Each of the enrichment samples was mixed with the liquid scintillation cocktail, and the tritium concentration was measured with a low background liquid scintillation counter. Arithmetic mean ± standard deviation for the tritium concentration of Morinokawa (spring water), Kakinohanahikawa (spring water) and Gyokusendo (cave drop water) samples were estimated to be 0.13 ± 0.04 Bq L^-1, 0.12 ± 0.03 Bq L^-1 and 0.13 ± 0.03 Bq L^-1, respectively. The comparison between these results and reported data suggested that the latitude effect is one of factors in the relatively low tritium concentration observed in Okinawa Island.

著者

高原 省五 本間 俊充 米田 稔 島田 洋子

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.51, no.3, pp.147-159, 2016 (Released:2016-11-18)

参考文献数

58

被引用文献数

1

---

Management of radiation-induced risks in areas contaminated by a nuclear accident is characterized by three ethical issues: (i) risk trade-off, (ii) paternalistic intervention and (iii) individualization of responsibilities. To deal with these issues and to clarify requirements of justification of interventions for the purpose of reduction in radiation-induced risks, we explored the ethical basis of the radiological protection system of the International Commission on Radiological Protection (ICRP). The ICRP's radiological protection system is established based on three normative ethics, i.e. utilitarianism, deontology and virtue ethics. The three ethical issues can be resolved based on the decision-making framework which is constructed in combination with these ethical theories. In addition, the interventions for inhabitants have the possibility to be justified in accordance with two ways. Firstly, when the dangers are severe and far-reaching, interventions could be justified with a sufficient explanation about the nature of harmful effects (or beneficial consequences). Secondly, if autonomy of intervened-individuals can be promoted, those interventions could be justified.

著者

今岡 達彦 勝部 孝則 川口 勇生 臺野 和広 土居 主尚 中島 徹夫 森岡 孝満 山田 裕 王 冰 神田 玲子 西村 まゆみ 二宮 康晴 村上 正弘 吉永 信治 柿沼 志津子

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.52, no.2, pp.68-76, 2017 (Released:2017-07-29)

参考文献数

3

被引用文献数

4

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Strategic research will be needed to unveil the uncertainty regarding the health effect of radiation at low dose and low dose rate. Recently, the National Council on Radiation Protection and Measurements (NCRP) published Commentary No. 24 dealing with the perspective of integrating radiation biology and epidemiology to address this issue. Results of radiation biology have not been effectively used for radiation risk assessment because 1) available epidemiological studies based on direct observation of human population have been considered to be the most relevant despite their uncertainties and 2) biological studies have not been conducted with their use in risk assessment in mind. The present paper summarizes the Commentary to present perspectives on integrating biology and epidemiology for radiation risk assessment.

著者

井上 義教 備後 一義 藤田 稔

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.10, no.2, pp.73-77, 1975 (Released:2010-02-25)

参考文献数

19

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For the purpose of utilizing radiation-induced chromosome aberrations in human peripheral blood lymphocytes as a means of dose evaluation in a criticality accident, a study was made of the relationship between fission neutron+gamma dose and the chromosome aberrations. Human peripheral blood lymphocytes were exposed in vitro to fission neutrons+gamma rays at Japan Research Reactor No. 4 for 5, 10, 20, 30, or 40min at 200kW. The cells were observed at their first mitotic division stage in culture.The frequency of the chromosome aberrations per cell, Y, was expressed as a power function of exposure time in minutes, t, as follows: Y=0.0018t1.12.On the assumption that there was no mutual interaction between chromosome aberrations induced by the neutrons and those by gamma rays and that there was similarity of the effects of the gamma rays produced in fissions and those of Co-60 gamma ays, estimation was made of contribution of the gamma rays to total yields. However, there was a contradiction that the contribution of gamma rays exceeded the total yield.

著者

吉井 裕

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.47, no.2, pp.97-101, 2012 (Released:2012-12-07)

被引用文献数

1

著者

藤波 直人 渡辺 哲也 荒木 智徳 水本 美佳 筒井 剛毅

出版者

日本保健物理学会

雑誌

保健物理 : hoken buturi (ISSN:03676110)

巻号頁・発行日

vol.39, no.3, pp.215-219, 2004-09

参考文献数

17

被引用文献数

2

著者

藤田 稔

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.15, no.3, pp.173-183, 1980 (Released:2010-02-25)

著者

大学等教員協議会・編集委員会

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.45, no.2, pp.137-140, 2010 (Released:2011-04-02)

著者

木村 秀樹 高橋 秀昭 齋藤 稔

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.43, no.1, pp.60-68, 2008 (Released:2010-08-05)

参考文献数

23

被引用文献数

1

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As part of the environmental radiation monitoring around the nuclear fuel cycle facilities constructed in Rokkasho-mura, we are carrying out continuous measurements of gross α and gross β radioactivities in air dust samples. Considering there measuring conditions, it is suggested that 210Po and 210Bi mainly contribute to gross α and gross β, respectively. The higher concentration of gross β radioactivity was observed during fall and winter. But then gross α radioactivity lowered during winter, and fluctuated on spring and fall. It is suggested that surface soils are one of major origins of gross α radioactivity, because 210Po/210Pb ratio in the soil is higher than the ratio in the air and the ground is covered with snow in winter. Large peaks of gross a radioactivity and α/β radioactivity ratio were observed on May 2003. Satellite imageries showed forest fires around Lake Baikal in this period. We confirmed that the air mass passed the vicinity of Lake Baikal and flowed in Rokkasho-mura by backward trajectories. There was a positive correlation between gross α radioactivity and the frequency of air mass traveling from the vicinity of Lake Baikal to Rokkasho-mura. The result suggested that the large peaks of the concentration of gross α radioactivity and α/β radioactivity ratio were caused by the forest fire in Russia.

著者

田中 裕史 迫田 晃弘 安藤 正樹 石森 有

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.51, no.2, pp.107-114, 2016 (Released:2016-08-09)

参考文献数

9

被引用文献数

2

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Ambient dose rates are continuously monitored in Ningyo-toge Environmental Engineering Center, Japan Atomic Energy Agency. The present study discussed the variations in ambient dose rates, observed from April 2014 to March 2015, due to snowfall as well as rainfall. It is much snowy as one of climatic features in this area. Rain or snow was sampled for a certain period in the day of interest (17 cases in total), and then the concentration of radon progeny was measured. With the measured data, the variation in ambient dose rate was calculated considering the accumulation of the radon progeny on the ground. As a whole, this calculation was found to reasonably reproduce the time trends of observed dose rates, except for four cases. Based on the backward trajectory analysis, it was explained that the discrepancy in two cases out of the four was induced by changes of radon progeny concentration in precipitation around sampling period. It was suggested that the other two cases were caused by the run-off of rain from the ground surface.

著者

草間 朋子

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.20, no.1, pp.67-71, 1985 (Released:2010-02-25)

著者

岩崎 民子

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.31, no.2, pp.155-160, 1996 (Released:2010-02-25)

著者

西沢 邦秀

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.34, no.4, pp.344-344, 1999 (Released:2010-02-25)

被引用文献数

1

著者

廣内 淳

出版者

日本保健物理学会

雑誌

保健物理 (ISSN:03676110)

巻号頁・発行日

vol.50, no.3, pp.152a-152a, 2015

著者

本間 俊充

出版者

日本保健物理学会

雑誌

保健物理 : hoken buturi (ISSN:03676110)

巻号頁・発行日

vol.43, no.3, pp.234-245, 2008-09

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Since the late 1980s, the International Atomic Energy Agency has sponsored programmes in the area of environmental modelling and assessment. The recent EMRAS (Environmental Modelling for Radiation Safety) programme was started in 2003 and ended in 2007. This paper firstly describes the historical background of international exercises aimed at the testing and validation of models to assess the transfer of radionuclides in the environment and to predict the potential routes and levels of human exposure to the radionuclides. Chernobyl fallout data collected in various regions of Europe have provided a unique opportunity to test the reliability of environmental assessment models for contamination of terrestrial and aquatic environments. The paper also describes the activities undertaken by the ^<131>I Working Group in the EMRAS programme, which were focused primarily on evaluating the predictive capability of environmental transfer and dosimetry models and on applying models to evaluating the effectiveness of countermeasures.