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Journal Articles

Observation of morphological abnormalities in silkworm pupae after feeding $$^{137}$$CsCl-supplemented diet to evaluate the effects of low dose-rate exposure

Tanaka, Sota; Kinouchi, Tadatoshi*; Fujii, Tsuguru*; Imanaka, Tetsuji*; Takahashi, Tomoyuki*; Fukutani, Satoshi*; Maki, Daisuke*; Notomi, Akihiro*; Takahashi, Sentaro*

Scientific Reports (Internet), 10, p.16055_1 - 16055_7, 2020/09

 Times Cited Count:0 Percentile:100(Multidisciplinary Sciences)

Since the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident, morphological abnormalities of the lepidopteran insects have been reported. However, it is unclear whether the abnormalities were caused directly by radiation because they did not study on absorbed dose and dose-effect relationship. In this study, we conducted an internal exposure experiment on silkworm using $$^{137}$$CsCl-supplemented artificial diet and estimated the absorbed dose to evaluate the morphological abnormalities in silkworm. The ratio of wing to whole body of pupae was compared between the $$^{137}$$CsCl-exposured and control groups and no significant differences were observed between the groups. This result suggest that morphological abnormalities in lepidopterans are unlikely due to direct radiation effects from $$^{137}$$Cs contamination after the FDNPP accident.

Journal Articles

Estimation method for corrosion rate of carbon steel in water with $$gamma$$-ray irradiated condition

Yamamoto, Masahiro; Sato, Tomonori; Komatsu, Atsushi; Nakano, Junichi; Ueno, Fumiyoshi

Proceedings of European Corrosion Congress 2015 (EUROCORR 2015) (USB Flash Drive), 7 Pages, 2015/09

In Fukushima-Daiichi Nuclear Power Station, decommissioning procedures are continuing and it will take more than 30 years. As some structures are made of carbon steel, degradation by corrosion is large problem for structural reliability. To clarify an irradiation effect for corrosion of carbon steel, corrosion test was con-ducted in $$^{60}$$Co $$gamma$$-ray irradiated condition. Corrosion test results showed that corrosion rates of $$gamma$$-ray irradiated condition increased with $$gamma$$-ray dose rates. The oxidant concentrations were also increased with $$gamma$$-ray dose rate. From these results, a new estimation method for corrosion rate of carbon steel in water with $$gamma$$-ray irradiated condition using radiolysis calculation is introduced and discussed.

JAEA Reports

Development of HEINPUT-GUI ver. 2.0 for estimating the late somatic and genetic effects induced by radiation exposure

Takahara, Shogo; Hidaka, Akihide; Ogino, Takashi*

JAEA-Data/Code 2015-001, 65 Pages, 2015/03

JAEA-Data-Code-2015-001.pdf:10.74MB

HEINPUT code is one of the preprocessor for probabilistic accident consequence assessment code OSCAAR, and estimates the risk of incidence and death due to radiation induced cancers. HEINPUT code currently uses two models developed by U.S. Nuclear Regulatory Commission (USNRC, 1985; 1993) and U.S. Environmental Protection Agency (EPA, 1994). In this report, the code was improved to enable to make calculation using the new EPA model. In addition, in order to reduce user's burden, we developed input data generator which can provide the input data for three estimation models implemented in HEINPUT-GUI based on the statistical information published.

Journal Articles

Effects of carbon-ion microbeam irradiation on locomotion and pharyngeal pumping motion in $textit{C. elegans}$

Suzuki, Michiyo; Hattori, Yuya; Sakashita, Tetsuya; Funayama, Tomoo; Yokota, Yuichiro; Ikeda, Hiroko; Kobayashi, Yasuhiko

JAEA-Review 2014-050, JAEA Takasaki Annual Report 2013, P. 88, 2015/03

Journal Articles

The 11th International Congress of Radiation Research

Saigusa, Shin*

Hoken Butsuri, 34(3), p.298 - 299, 1999/09

no abstracts in English

JAEA Reports

None

PNC-TJ1533 97-002, 133 Pages, 1997/03

PNC-TJ1533-97-002.pdf:4.28MB

no abstracts in English

JAEA Reports

Proceeding of the Second Steering Conference relating to the Agreement on the Implementation of Research at the Chernobyl Center for International Research between CHECIR and JAERI

Nagaoka, Toshi; Togawa, Orihiko; Moriuchi, Shigeru; S.I.Rybalko*; Sukhoruchkin, A. K.*; S.V.Kazakov*

JAERI-Conf 94-005, 99 Pages, 1994/11

JAERI-Conf-94-005.pdf:3.18MB

no abstracts in English

Journal Articles

Calibration study of whole-body counters for Cs-137 in the body using different phantoms carried out by the cooperation program between Japan and Ukraine; Interim summary of the study in, 1989-1993

Mizushita, Seiichi; *; *

Assessment of the Health and Environmental Impact from Radiation Doses due to Released Radionuclides, 0, p.141 - 161, 1994/00

no abstracts in English

Journal Articles

IAEA assessment on radiological consequences of Chernobyl accident; Radiation exposure of public

Matsuzuru, Hideo

Enerugi Rebyu, 11(9), p.13 - 17, 1991/09

no abstracts in English

Journal Articles

Int.Conf.on Radiological Consequences in USSR from Chernobyl Accident; Assessment of Health and Environmental Effects and Evaluation of Protective Measures

Matsuzuru, Hideo

Nippon Genshiryoku Gakkai-Shi, 33(8), p.784 - 785, 1991/08

no abstracts in English

JAEA Reports

None

*

PNC-TJ1602 91-001, 49 Pages, 1991/03

PNC-TJ1602-91-001.pdf:1.24MB

no abstracts in English

JAEA Reports

Health effects models for off-site radiological consequence analysis of nuclear reactor accidents

Togawa, Orihiko; Homma, Toshimitsu; Matsuzuru, Hideo; *

JAERI-M 91-005, 179 Pages, 1991/02

JAERI-M-91-005.pdf:5.22MB

no abstracts in English

Journal Articles

Current status of development and application of computerized support systems for emergency response in radiological accidents

Ishigami, Tsutomu; ; Kobayashi, Kensuke

Nippon Genshiryoku Gakkai-Shi, 32(4), p.328 - 337, 1990/04

no abstracts in English

Oral presentation

Live cell imaging of mitosis of cells exposed to X-ray microbeam

Kaminaga, Kiichi; Kanari, Yukiko; Sakamoto, Yuka; Narita, Ayumi; Usami, Noriko*; Kobayashi, Katsumi*; Noguchi, Miho; Yokoya, Akinari

no journal, , 

no abstracts in English

Oral presentation

Issues of material degradation on decommissioning procedures at Fukushima Daiichi Nuclear Power Station

Yamamoto, Masahiro

no journal, , 

The nuclear science and engineering center is engaged in corrosion problems derived from the decommissioning procedures at Fukushima Daiichi Nuclear Power Station. Our viewpoints are effects of irradiation from radioactive materials into cooling water. Some experiments were conducted at $$gamma$$-ray irradiation facilities in Takasaki Advanced Radiation Research Institute. This report introduces several results in these experiments and also the future research issues.

Oral presentation

Effects of radiation on locomotion and pumping motion in $textit{C. elegans}$

Suzuki, Michiyo; Hattori, Yuya; Kobayashi, Yasuhiko

no journal, , 

no abstracts in English

Oral presentation

Approach of machine-learning-based visualization for the evaluation of fuzzy effects of low-dose radiation

Kanzaki, Norie; Sakoda, Akihiro; Kataoka, Takahiro*; Yamaoka, Kiyonori*

no journal, , 

It is not easy to evaluate fuzzy effects of low-dose radiation by basic statistical analysis or basic machine learning. In the present study, the modification of self-organizing maps, which is a kind of machine learning, was made for the evaluation of such effects: namely many reference vectors which learned input dataset by self-organizing maps were reanalyzed with the same technique. Based on this procedure, we analyzed a dataset about low-dose radiation as well as a benchmark dataset, suggesting that the modified self-organizing maps can work even for input data with complex topology and data distribution.

Oral presentation

Assessment of radiation effects using Taguchi method

Kanzaki, Norie; Sakoda, Akihiro; Kataoka, Takahiro*; Ishida, Tsuyoshi; Tanaka, Hiroshi; Yamaoka, Kiyonori*

no journal, , 

The aim of this study is to develop a novel radiation risk assessment for the evaluation of radiation-induced "health-loss" by means of Taguchi method that is known as Quality Engineering. In this study, radiation risk was defined as "health-loss", and then we assessed the effects of irradiation in mice with lipopolysaccharide (LPS) induced inflammation using Taguchi's loss function for the formulation of both harmful effects and beneficial effects. LPS 25 and 100 ug were found to be non-lethal dose and lethal dose 46%, respectively. The CRP levels of LPS-treated mice were increased significantly. Next, we assessed the effects of irradiation 4 hours after normal mice were irradiated with X-ray of 0.1, 0.5, or 3.0 Gy. In the case of only irradiation without LPS administration, CRP was not changed. CRP of LPS and X-ray treated mice had a greater tendency to increase than that of LPS treated mice, although the opposite trend was observed in LPS (100 ug) and X-ray (0.1 Gy) treated mice. Finally, we set the conditions of treatments to mouse as the controllable factors and calculated Taguchi's SN-ratio for the smaller the better. Therefore, we found that low-dose irradiation inhibited inflammation because SN-ratio of 0.1 Gy irradiation group was the maximum.

Oral presentation

Oral presentation

Analysis of radiation induced mutation in organ cells derived from human induced pluripotent stem cells

Shimada, Mikio*; Kanzaki, Norie; Yanagihara, Hiromi*; Miyake, Tomoko*; Matsumoto, Yoshihisa*

no journal, , 

Although mutation frequency depends on organ cell types and differentiation level, it is not fully understood that organ cell types dependent mutation frequency in human cells. In this study, we aimed to establish measurement system of radiation dependent mutation frequency for analyze radiation effect to the human body. For this purpose, we derived four different organ cells such as neural cells, skin keratinocytes, heart muscle cells and blood cells from hiPSCs. Further, using artificial intelligence technology and machine leaning method, we w analyzed differences of mutation frequency during samples.

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