A5103001935- Advanced Combustion Engine Technologies
- Radioactive contamination and transfer
- Combustion and flame dynamics
- Combustion and Detonation Processes
- Nuclear and radioactivity studies
- Radioactivity and Radon Measurements
- Advanced Battery Technologies Research
- Orthopaedic implants and arthroplasty
- Nuclear Issues and Defense
- Orthopedic Infections and Treatments
- Advanced Thermodynamic Systems and Engines
- Biodiesel Production and Applications
- Atmospheric chemistry and aerosols
- Engineering Applied Research
- Total Knee Arthroplasty Outcomes
- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Lung Cancer Treatments and Mutations
- Adsorption, diffusion, and thermodynamic properties of materials
- Anaerobic Digestion and Biogas Production
- Ultrasound in Clinical Applications
- Image and Signal Denoising Methods
- Medical and Biological Sciences
- Heat Transfer and Optimization
- Mechanical and Thermal Properties Analysis
- Anesthesia and Pain Management
Tohoku University
2011-2025
Tohoku University Hospital
2014-2022
Osaka Rosai Hospital
2016-2018
National Institute of Technology, Gunma College
2016
Advanced Engineering (Czechia)
2016
National Hospital Organization Saitama Hospital
2012
Tokyo National Hospital
2012
National Hospital Organization
2012
Shimane University
2010
Meiji University
2002
Bis(2,2,2-trifluoroethyl) carbonate (BtFEC) is a fire suppressant candidate for the use of lithium-ion batteries (LIBs). It known that electrolyte components in LIBs are highly flammable, making them susceptible to igniting, whether this due manufacturing fault or an abuse LIB itself. To address risk, efficiency BtFEC as was investigated experimentally high-temperature combustion environment, allowing further refinement and validation model. Using shock tube, properties were measured behind...
We aimed to investigate the effect of chronic radiation exposure associated with Fukushima Daiichi Nuclear Plant accident on testis from 2 bulls. Estimated dose internal in one bull was 0.7–1.2 mGy (134Cs) and 0.4–0.6 (137Cs) external 2.0 0.8 (196 days). Internal other 3.2–6.1 1.8–3.4 1.3 0.6 (315 Sperm morphology spermatogenesis were within normal ranges. 134, 137Cs radioactivity detected but Cs not detectable by electron probe microanalysis. Thus, adverse radiation-induced effects observed...
Carbonate esters such as dimethyl carbonate (DMC), ethyl methyl (EMC) and diethyl (DEC) are widely used electrolyte solvents in a lithium-ion battery (LIB) considered one of potential fire causes. This study investigates difference gas-phase reactivities DMC, EMC DEC. Species measurements for oxidation (equivalence ratio 1.0) pyrolysis DMC DEC at maximum wall temperatures Tw,max = 700–1300 K atmospheric pressure were performed using gas chromatograph connected to micro flow reactor with...
Little is known on reactivity of ethyl methyl carbonate (EMC), which widely used as an electrolyte solvent in lithium-ion batteries (LIB). A better understanding the EMC and its chemical kinetics are required to assess fire risks LIB. The a stoichiometric EMC/air mixture was investigated with weak flame micro flow reactor controlled temperature profile (MFR) at atmospheric pressure maximum wall (Tw,max) 1300 K. To investigate species evolution formed oxidation (equivalence ratios 0.5, 1.0...
The bladder and tumors: imaging with three-dimensional display of helical CT data.Y Narumi, T Kumatani, Y Sawai, K Kuriyama, C Kuroda, S Takahashi, Kim, Tsuda, Murakami H NakamuraAudio Available | Share
The Fukushima Daiichi Nuclear Power Plant (FNPP) accident, the largest nuclear incident since 1986 Chernobyl disaster, occurred when plant was hit by a tsunami triggered Great East Japan Earthquake on March 11, 2011. subsequent uncontrolled release of radioactive substances resulted in massive evacuations 20-km zone. To better understand biological consequences FNPP we have been measuring DNA damage levels cattle evacuation evaluated assessing double-strand breaks peripheral blood...
It is not an exaggeration to say that, without nuclear accidents or the analysis of radiation therapy, there no way in which we are able quantify effects on humans. Therefore, livestock abandoned ex-evacuation zone and euthanized due Fukushima Daiichi Nuclear Power Plant (FNPP) accident extremely valuable for analyzing environmental pollution, its biodistribution, metabolism radionuclides, dose evaluation influence internal exposure. We, therefore, sought establish archive system open it...
Ethylene carbonate (EC) and dimethyl (DMC) are important chemical substances of the lithium-ion battery (LIB) electrolytes. Although esters regarded as a cause LIB fires, there few studies on pyrolysis/combustion characteristics EC. This study aims to investigate pyrolysis EC by performing theoretical calculations species measurements, propose first sub-mechanism. The performed for gas-phase decomposition at G4 level theory indicate that dissociation channel producing acetaldehyde carbon...
Abstract The accident at the F ukushima D aiichi Nuclear Power Plant ( FNPP ) released a large amount of radioactive substances into environment. Furthermore, beef contaminated with cesium above 500 Bq/kg safety standard was circulated in food chain 2011. Japanese consumers remain concerned about radioactively food. In our previous study, we detected linear correlation between 137 C s) activity blood and muscle around to 2500 cattle. However, it unclear whether maintained lower radioactivity...
Oxidation of C2HF5 (pentafluoroethane, R125) that has been extensively used as a refrigerant and fire suppressant agent was examined by weak flames in micro flow reactor with controlled temperature profile (MFR) for safety reasons. To investigate the oxidation process stoichiometric C2HF5/air mixture, species measurements flame at maximum wall temperatures from 750 to 1400 K were conducted using Fourier Transform Infrared Spectroscopy (FTIR). Measurement results showed two-stage which...
The R410A refrigerant (a blend of CH2F2 and C2HF5 with a mass ratio 50:50) has been extensively used because its small impact on the environment. We investigated effects CH2F2-to-C2HF5 blending in stoichiometric CH2F2/C2HF5/air mixture ignition combustion properties using microflow-reactor controlled temperature profile. Experiments weak flames showed two separated reaction zones (50:50), while single zone was observed for C2HF5. This computationally reproduced Linteris mechanism. According...
This paper deals with the investigation on scavenging action of captioned new type engine having no cylinder port, and tests were carried out keeping pressure change in cylinder, piston movement motion exhaust valves as similar possible to their conditions during period expected actual engine.Various shrouds setted valve so enable that main air through flows downwards almost along wall opposite side valve, preventing short circuit flow into from valve. Consequently, was formed U which is...
In this study, we have the flow between counter-flow nozzles clarified by fluid analysis and combustion experiments. The high-temperature steam as heated was supplied from lower nozzle with O_2. fuel upper nozzle. particular, focused on lateral rate, temperature distribution of impinging fluids varied ratios distance. result showed that range can be combusted stably changed differences in equivalence ratio also variation distance influence flame structure.