A5080929297- Radioactive contamination and transfer
- Radioactive element chemistry and processing
- Radioactivity and Radon Measurements
- Nuclear Physics and Applications
- Nuclear and radioactivity studies
- Nuclear reactor physics and engineering
- Nuclear Materials and Properties
- Chemical Synthesis and Characterization
- Radiation Detection and Scintillator Technologies
- Graphite, nuclear technology, radiation studies
- Agriculture, Soil, Plant Science
- Isotope Analysis in Ecology
- Plant Genetic and Mutation Studies
- Heavy metals in environment
- Coal and Its By-products
- Extraction and Separation Processes
- Radiopharmaceutical Chemistry and Applications
- Boron Compounds in Chemistry
- Geology and Paleoclimatology Research
- Ammonia Synthesis and Nitrogen Reduction
- Nuclear materials and radiation effects
- Archaeology and ancient environmental studies
- Plant Stress Responses and Tolerance
- Phosphorus and nutrient management
- Arsenic contamination and mitigation
Kyoto University
2014-2025
Kyoto University Research Reactor Institute
2006-2018
Hiroshima University
2014
The neutron neutron-capture cross cross-sections of 244Cm and 246Cm were measured by the time-of-flight method in energy range 1–300 300 eV with an array large germanium detectors Accurate Neutron-Nucleus Reaction measurement InstrumentANNRI at Material Life Science Experimental Facility (MLF) Japan Proton Accelerator Research ComplexJ-PARC/MLF. resonances around 7.7 16.8 8 4.3 15.3 3 observed capture reactions for first time. uncertainties obtained are 5.8% top resonance 6.6% that 246Cm....
Cesium was recovered from plant samples obtained Fukushima prefecture. The isotopic ratios of 134Cs/137Cs and 135Cs/137Cs were analyzed by thermal ionization mass spectrometry with a single filament method using TaO activator. Samples containing 5 Bq 137Cs typical analytical errors approximately 0.5% for 0.1% 135Cs/137Cs. Measurements both showed profiles that characteristic the measurements among other environmental reported in literature. results applicable source analysis radioactive Cs
Boron neutron capture therapy (BNCT) is a cellular-level particle radiation that combines the selective delivery of boron compounds to tumour tissue with irradiation. L-p-Boronophenylalanine (L-BPA) compound now widely used in clinical situations. Determination distribution required for successful BNCT prior Thus, positron emission tomography [18F]-L-FBPA, an 18F-labelled radiopharmaceutical analogue L-BPA, was developed. However, several differences between L-BPA and [18F]-L-FBPA have been...
In the summer of 2012, 1 year after nuclear accident in March 2011 at Fukushima Daiichi power plant, we examined effects gamma radiation on rice a highly contaminated field Iitate village Fukushima, Japan. We investigated morphological and molecular changes healthy seedlings exposed to continuous low-dose up 4 µSv h−1, about 80 times higher than natural background level. After exposure rays, expression profiles selected genes involved DNA replication/repair, oxidative stress, photosynthesis,...
In relation to the efforts reconstruct radiation dose in Dolon village, which was affected by first USSR atomic bomb test 1949 at Semipalatinsk nuclear site, width and center-axis location of radioactive plume were investigated based on soil contamination data around nearby villages. Assuming that passed over along a straight line from ground zero point this area, spatial distributions plotted as function perpendicular distance supposed plume. total 83 52 available for 137Cs 239,240Pu,...
The present study continues our previous research on investigating the biological effects of low-level gamma radiation in rice at heavily contaminated Iitate village Fukushima, by extending experiments to unraveling leaf proteome. 14-days-old plants Japonica (Oryza sativa L. cv. Nipponbare) were subjected level upto 4 µSv/h, for 72 h. Following exposure, samples taken from around 190 µSv/3 d exposed seedling and total proteins extracted. irradiated control (harvested start experiment)...
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Cesium was recovered from soil samples obtained in Fukushima prefecture. Isotopic analysis of Cs performed by γ-spectrometry to determine the activity ratio 134Cs/137Cs and thermal ionization mass spectrometry used isotopic ratios 133Cs/137Cs 135Cs/137Cs. The analytical results showed that both 135Cs/137Cs were within expected values for Daiichi Nuclear Power Plant estimated using ORIGEN-II code, suggesting most radioactive sample originated Plant. concentration 137Cs contribution global...
Neutron total and capture cross sections of 241Am have been measured with a new data acquisition system neutron transmission measurement installed in Accurate Nucleus Reaction Instrument at Materials Life Science Experimental Facility Japan Proton Accelerator Research Complex. The were determined by using time-of-flight (TOF) method the energy region from 4 meV to 2 eV. thermal section was derived an uncertainty 2.9%. A pulse-height weighting technique applied determine yields 241Am. TOF 100...
Ceasium-137 and 90Sr are major artificial radionuclides that have been released into the environment. Soil-to-plant transfer of is an important route to food contamination. The radionuclide activity concentrations in crops must be quantitatively predicted for estimating internal radiation doses from ingestion. In this study, soil potato samples were collected three study sites contaminated with different sources 137Cs 90Sr: Aomori Prefecture (global fallout) two accidental release areas...
We report molecular changes in leaves of rice plants (Oryza sativa L. - reference crop plant and grass model) exposed to ultra low-dose ionizing radiation, first using contaminated soil from the exclusion zone around Chernobyl reactor site. Results revealed induction stress-related marker genes (Northern blot) secondary metabolites (LC-MS/MS) irradiated leaf segments over appropriate control. Second, employing same vitro model system, we replicated results experiment in-house fabricated...