Accounting for long-term doses in “worldwide health effects of the Fukushima Daiichi nuclear accident”

2013 ◽  
Vol 6 (3) ◽  
pp. 1042 ◽  
Author(s):  
Jan Beyea ◽  
Edwin Lyman ◽  
Frank N. von Hippel
Keyword(s):  
Health Effects ◽  
Nuclear Accident ◽  
Fukushima Daiichi

scholarly journals Worldwide health effects of the Fukushima Daiichi nuclear accident

2012 ◽  
Vol 5 (9) ◽  
pp. 8743 ◽  
Author(s):  
John E. Ten Hoeve ◽  
Mark Z. Jacobson
Keyword(s):  
Health Effects ◽  
Nuclear Accident ◽  
Fukushima Daiichi

Changes in radiation protection measures after the Fukushima Daiichi nuclear accident: evaluation of meeting minutes of the Nuclear Regulation Authority, Japan

2020 ◽  
Author(s):  
T. Nirasawa ◽  
M. Tsubokura ◽  
M. Murakami
Keyword(s):  
Risk Communication ◽  
Radiation Protection ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Accident ◽  
Fukushima Accident ◽  
Protection Measures ◽  
Fukushima Daiichi ◽  
Emergency Measures

Since the Fukushima accident, there has been an increasing discussion on post-accident radiation protection as well as nuclear regulation and management. This study assessed the general content of discussions during the chronic phases after the accident, and analyzed the changes over the years in discussion on radiation protection measures related to the accident by focusing on the meeting minutes of the Nuclear Regulation Authority, Japan from 2012 to 2018 using the method of text mining. The analysis revealed that while the authority’s main focus was on regulation and management regarding the safety of nuclear power plants, in addition to emergency measures for the future (especially in matters such as evacuation), discussions were also held on radiation protection measures for residents and workers and risk communication in the period following the accident. The authority was observed to have dynamically tackled the issues that were regarded as most urgent after the accident and gradually shifted its focus to mid- to long-term issues. In the aftermath of a nuclear accident, it is important for the authorities responsible for nuclear regulation to deepen their knowledge of social measures such as evacuation, return of residents, and risk communication, and strengthen cooperation with experts from other fields.

scholarly journals Long-Term Exposure to Nanosized TiO2 Triggers Stress Responses and Cell Death Pathways in Pulmonary Epithelial Cells

2021 ◽  
Vol 22 (10) ◽  
pp. 5349
Author(s):  
Mayes Alswady-Hoff ◽  
Johanna Samulin Erdem ◽  
Santosh Phuyal ◽  
Oskar Knittelfelder ◽  
Animesh Sharma ◽  
...  
Keyword(s):  
Cell Death ◽  
Epithelial Cells ◽  
Health Effects ◽  
Stress Responses ◽  
Cell Stress ◽  
Lipid Classes ◽  
Long Term Effects ◽  
Cell Death Pathways ◽  
Pulmonary Epithelial Cells

There is little in vitro data available on long-term effects of TiO2 exposure. Such data are important for improving the understanding of underlying mechanisms of adverse health effects of TiO2. Here, we exposed pulmonary epithelial cells to two doses (0.96 and 1.92 µg/cm2) of TiO2 for 13 weeks and effects on cell cycle and cell death mechanisms, i.e., apoptosis and autophagy were determined after 4, 8 and 13 weeks of exposure. Changes in telomere length, cellular protein levels and lipid classes were also analyzed at 13 weeks of exposure. We observed that the TiO2 exposure increased the fraction of cells in G1-phase and reduced the fraction of cells in G2-phase, which was accompanied by an increase in the fraction of late apoptotic/necrotic cells. This corresponded with an induced expression of key apoptotic proteins i.e., BAD and BAX, and an accumulation of several lipid classes involved in cellular stress and apoptosis. These findings were further supported by quantitative proteome profiling data showing an increase in proteins involved in cell stress and genomic maintenance pathways following TiO2 exposure. Altogether, we suggest that cell stress response and cell death pathways may be important molecular events in long-term health effects of TiO2.

scholarly journals Long-Term Aging of Chernobyl Fuel Debris: Corium and “Lava”

2021 ◽  
Vol 13 (3) ◽  
pp. 1073
Author(s):  
Bella Zubekhina ◽  
Boris Burakov ◽  
Ekaterina Silanteva ◽  
Yuri Petrov ◽  
Vasiliy Yapaskurt ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Mass Loss ◽  
Nuclear Power ◽  
Distilled Water ◽  
Chemical Alteration ◽  
Laboratory Conditions ◽  
Fukushima Daiichi ◽  
Important Basis

Samples of Chernobyl fuel debris, including massive corium and “lava” were collected inside the Chernobyl “Sarcophagus” or “Shelter” in 1990, transported to Leningrad (St. Petersburg) and stored under laboratory conditions for many years. In 2011 aged samples were visually re-examined and it was confirmed that most of them remained intact, although some evidence of self-destruction and chemical alteration were clearly observed. Selected samples of corium and “lava” were affected by static leaching at temperatures of 25, 90 and 150 °C in distilled water. A normalized Pu mass loss (NLPu) from corium samples after 140 days was noted to be 0.5 g/m2 at 25 °C and 1.1 g/m2 at 90 °C. For “lava” samples NLPu was 2.2–2.3 g/m2 at 90 °C for 140 days. The formation of secondary uranyl phases on the surface of corium and “lava” samples altered at 150 °C was confirmed. The results obtained are considered as an important basis for the simulation of fuel debris aging at Fukushima Daiichi nuclear power plant (NPP).

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