scholarly journals Concentrations of 137Cs radiocaesium in the organs and tissues of low-dose-exposed wild Japanese monkeys

2020 ◽  
Author(s):  
Toshinori Omi ◽  
Sachie Nakiri ◽  
Setuko Nakanishi ◽  
Naomi Ishii ◽  
Taiki Uno ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Body Weight Gain ◽  
Biological Effects ◽  
Radioactive Material ◽  
Tissue Samples ◽  
Japanese Monkeys ◽  
Fdnpp Accident ◽  
Forested Areas ◽  
Kidney Liver

Abstract Objectives Following the massive earthquake that struck eastern Japan on March 11, 2011, a large amount of radioactive material was released into the environment from the damaged reactor of the Fukushima Daiichi Nuclear Power Plant (FDNPP). After the FDNPP accident, radiocaesium was first detected in muscle samples from wild Japanese monkeys exposed to radioactive materials, and haematologic effects, changes in head size, and delayed body weight gain were also reported, but little is known about the distribution of 137Cs in the organs and tissues of wild Japanese monkeys. Results We detected the 137Cs in various organ and tissue samples of 10 wild Japanese monkeys inhabiting the forested areas of Fukushima City that were captured between July and August 2012.Among muscle, brain, heart, kidney, liver, lung, and spleen, muscle exhibited the highest and the brain the lowest 137Cs concentration. The concentration (mean±SD) of137Cs in muscle, brain, heart, kidney, liver, lung, and spleen was 77 ± 66, 26 ± 22, 41 ± 35, 49 ± 41, 41 ± 38, 53 ± 41, and 53 ± 51 Bq/kg, respectively. These results can help us understand the biological effects of long-term internal radiation exposure in non-human primates.

scholarly journals Concentrations of 137Cs radiocaesium in the organs and tissues of low-dose-exposed wild Japanese monkeys

2020 ◽  
Author(s):  
Toshinori Omi ◽  
Sachie Nakiri ◽  
Setsuko Nakanishi ◽  
Naomi Ishii ◽  
Taiki Uno ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Body Weight Gain ◽  
Biological Effects ◽  
Radioactive Material ◽  
Tissue Samples ◽  
Japanese Monkeys ◽  
Fdnpp Accident ◽  
Forested Areas ◽  
Kidney Liver

Abstract Objectives Following the massive earthquake that struck eastern Japan on March 11, 2011, a large amount of radioactive material was released into the environment from the damaged reactor of the Fukushima Daiichi Nuclear Power Plant (FDNPP). After the FDNPP accident, radiocaesium was first detected in muscle samples from wild Japanese monkeys exposed to radioactive materials, and haematologic effects, changes in head size, and delayed body weight gain were also reported, but little is known about the distribution of 137 Cs in the organs and tissues of wild Japanese monkeys. Results We detected the 137 Cs in various organ and tissue samples of 10 wild Japanese monkeys inhabiting the forested areas of Fukushima City that were captured between July and August 2012.Among muscle, brain, heart, kidney, liver, lung, and spleen, muscle exhibited the highest and the brain the lowest 137 Cs concentration. The concentration (mean±SD) of 137 Cs in muscle, brain, heart, kidney, liver, lung, and spleen was 77 ± 66, 26 ± 22, 41 ± 35, 49 ± 41, 41 ± 38, 53 ± 41, and 53 ± 51 Bq/kg, respectively.These results can help us understand the biological effects of long-term internal radiation exposure in non-human primates.

Danube Field Excursion 1988: Tritium Content of River Water; Radioactivity of Danube Sediments

1990 ◽  
Vol 22 (5) ◽  
pp. 203-210 ◽  
Author(s):  
D. Rank ◽  
F. J. Maringer ◽  
W. Papesch ◽  
V. Rajner
Keyword(s):  
River Water ◽  
Bottom Sediments ◽  
Nuclear Power ◽  
Radioactive Material ◽  
Reactor Accident ◽  
Tritium Content ◽  
Fine Sediments ◽  
Fish Samples ◽  
Field Excursion

Water, sediment, and fish samples were collected during the Danube excursion 1988, within a coordinated sampling program of the Radiology Working Group of the “Internationale Arbeitsgemeinschaft Donauforschung ” (K.Hübel, Munich; I. Kurcz, Budapest; D.Rank, Vienna). The H-3 content of the river water and the radioactivity of the bottom sediments were measured at the BVFA Arsenal, Vienna. The determined H-3 content of the Danube water corresponds with the long-term trend in the H-3 content of the hydrosphere; the values lie in the range of 3 Bq/kg downstream from Belgrade, upstream from Belgrade they are about 4 Bq/kg. It was only in the waste water plume of the nuclear power station of Kozloduj that a slightly elevated H-3 value - 6 Bq/kg - was determined. The content of the sediments of artificial radionuclides was found, at the time of the Danube field excursion, to be almost exclusively due to the radioactive material released following the reactor accident at Chernobyl in April 1986 (mainly Cs-137 and Cs-134). As a consequence of the air currents and precipitation conditions prevailing at the time of the accident, the bottom sediments in the lower course of the Danube were less contaminated than those in the upper course. The fine sediments were found to contain over 3000 Bq/kg of Cs-137 in the upper course of the Danube.

scholarly journals Monitoring of Radioactive Cesium in Wild Boars Captured Inside the Difficult-To-Return Zone in Fukushima Prefecture Over a Five-Year Period

2021 ◽  
Author(s):  
Rie SAITO ◽  
Reiko KUMADA ◽  
Kenji INAMI ◽  
Kousuke KANDA ◽  
Masahiko KABEYA ◽  
...  
Keyword(s):  
Wild Boar ◽  
Nuclear Power ◽  
Food Habit ◽  
Radioactive Cesium ◽  
High Concentration ◽  
Tissue Samples ◽  
Low Concentration ◽  
Significant Difference ◽  
Cesium 137

Abstract Following the Fukushima Daiichi Nuclear Power Plant accident in 2011, tissue samples from wild boar (Sus scrofa) outside the evacuation zone (difficult-to-return zone, DRZ) tended to show high concentrations of cesium-137 (137Cs). Understanding the 137Cs dynamics of wild boar populations inside the DRZ is necessary because they affect 137Cs dynamics and wild boar management in areas outside the DRZ. Since few detailed, long-term studies have been conducted inside the DRZ, we measured 137Cs concentrations in 221 wild boar muscle samples obtained from wild boar caught inside the DRZ and surrounding areas over a five-year period. Our results showed that the 137Cs concentration in wild boar from inside the DRZ were higher than those in wild boar outside this zone. No significant difference was observed between muscle and soil 137Cs levels, but significant correlations were observed between muscle 137Cs concentrations and body length and body weight in the low-concentration season, but not between all seasons and the high-concentration seasons. It is considered that the size effects observed during the low-concentration season may be due to factors related to metabolism and changes in food habit. This is the first long-term survey of 137Cs in wild boar inside the DRZ.

scholarly journals Chernobyl: de desierto nuclear a laboratorio evolutivo

2019 ◽  
Author(s):  
German Orizaola
Keyword(s):  
Radioactive Contamination ◽  
Nuclear Power ◽  
Bird Species ◽  
Basic Research ◽  
Radioactive Material ◽  
Large Mammals ◽  
The Subject ◽  
Long Term Impact ◽  
Natural Laboratory

The 1986 accident at the Chernobyl nuclear power plant in Ukraine caused the worst human-caused release of radioactive material in history. Initial forecasts considered that the area affected by radioactive contamination would be devoid of life for millennia. Three decades later, the biodiversity of the area has completely recovered and all the large mammals of Eastern Europe, as well as over 200 bird species, now live in Chernobyl. The mechanisms that allow organisms to live in this area are still the subject of study and controversy. There is currently no scientific consensus on the medium- and long-term impact of radiation on the nature of the area. Thus, basic research is required in Chernobyl to understand the effects that radioactive contamination had on biodiversity there. The area is also an excellent natural laboratory for studying eco-evolutionary processes in response to human activity.

CASTOR® BR3: Design of a Transport and Storage Cask for Spent Fuel From a Belgian Nuclear Power Plant

2001 ◽  
Author(s):  
Ulrich Knopp
Keyword(s):  
Nuclear Power ◽  
Storage Period ◽  
Nuclear Research ◽  
Ductile Cast Iron ◽  
Radioactive Material ◽  
Research Centre ◽  
Spent Fuel ◽  
Interim Storage ◽  
And Storage

Abstract The CASTOR® BR3 cask has been designed and manufactured to accomodate irradiated fuel (U and MOX) from the BR3 test reactor at the nuclear research centre SCK/CEN in Dessel near Mol, Belgium, which is currently being dismantled. The CASTOR® BR3 is designed as a Type B(U)F package for transport and will be licensed in Belgium. In addition, the CASTOR® BR3 needs a license as a storage cask to be operated in an interim cask storage facility. To obtain these licenses, the cask design has to observe the international regulations for the safe transport of radioactive material as well as the special requirements for the cask storage. The CASTOR® BR3 is a member of the CASTOR® family of spent fuel casks, delivered by the German company GNB. In this way, the cask has such typical features as the following: • monolithic cask body made of ductile cast iron; • double-lid system consisting of primary and secondary lid for long-term interim storage of the fuel. This family of casks has been used for over 20 years for transport and storage of spent fuel. In this paper, the IAEA regulatory requirements for transport casks are summarized and it is shown by selected examples how these requirements have been converted into the cask design and the analyses performed for the cask. Finally, the cask features for an interim storage period of up to 50 years will be spotlighted. Main topics are the evaluation of the long term behaviour of selected cask components and the cask monitoring system for the surveillance of the leak tightness of the cask during the storage period.

Evaluating radiocesium retention ability of root-mat horizon using micro-PIXE analysis

2014 ◽  
Vol 24 (01n02) ◽  
pp. 29-34
Author(s):  
Hirotsugu Arai ◽  
Keizo Ishii ◽  
Shigeo Matsuyama ◽  
Fumito Fujishiro ◽  
Azusa Ishizaki ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Abiotic Factors ◽  
Infiltration Rate ◽  
Water Infiltration ◽  
Pixe Analysis ◽  
Stable Cesium ◽  
Fdnpp Accident ◽  
Mineral Soils ◽  
Root Surfaces

A lot of radiocesium had been deposited onto pastures and grasslands following Fukushima Daiichi Nuclear Power Plant (FDNPP) accident. More radiocesium was accumulated in root-mat horizon than in both above ground plant bodies and mineral soils. In this study, factors causing higher radiocesium concentrations in root-mat horizon were evaluated by the addition of stable cesium solution and particle-induced X-ray emission (PIXE) analysis. Results suggest that adsorption onto root surfaces played a significant role in Cs accumulation in root-mat horizon. Furthermore, absorption of Cs was key to its long-term preservation. The adsorption of Cs by clay minerals also contributed to its retention. A slow water infiltration rate may also affect the enrichment of radiocesium in root-mat horizon. Based on these results, it is concluded that both biotic and abiotic factors contributed to the effective retention of radiocesium in root-mat horizons following the FDNPP accident.

The mechanistic role of thymoquinone in Parkinson's disease: focus on neuroprotection in pre-clinical studies

2021 ◽  
Vol 14 ◽  
Author(s):  
Mohammad Najim Uddin ◽  
Mohammad Injamul Hoq ◽  
Israt Jahan ◽  
Shafayet Ahmed Siddiqui ◽  
Chayan Dhar Clinton ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Clinical Studies ◽  
Nigella Sativa ◽  
Biological Effects ◽  
Neuroprotective Activity ◽  
Substantia Nigra Pars Compacta ◽  
Movement Difficulties

: Thymoquinone (TQ) is one of the leading phytochemicals, which is abundantly found in Nigella sativa L. seeds. TQ exhibited various biological effects such as antioxidant, anti-inflammatory, antimicrobial, and anti-tumoral in several pre-clinical studies. Parkinson's disease (PD) is a long-term neurodegenerative disease with movement difficulties, and the common feature of neurodegeneration in PD patients is caused by dopaminergic neural damage in the substantia nigra pars compacta. The neuroprotective activity of TQ has been studied in various neurological disorders. TQ-mediated neuroprotection against PD yet to be reported in a single frame; therefore, this review is intended to narrate the potentiality of TQ in the therapy of PD. TQ has been shown to protect against neurotoxins via amelioration of neuroinflammation, oxidative stress, apoptosis, thereby protects neurodegeneration in PD models. TQ could be an emerging therapeutic intervention in PD management, but mechanistic studies have been remained to be investigated to clarify its neuroprotective role.

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