A5041965608- Superconducting Materials and Applications
- Aluminum Alloy Microstructure Properties
- Physics of Superconductivity and Magnetism
- Microstructure and mechanical properties
- Advanced ceramic materials synthesis
- Advanced Numerical Methods in Computational Mathematics
- Aluminum Alloys Composites Properties
- Mechanical stress and fatigue analysis
- X-ray Diffraction in Crystallography
- Matrix Theory and Algorithms
- Distributed and Parallel Computing Systems
- Non-Destructive Testing Techniques
- Magnetic Properties and Applications
- Numerical methods in engineering
- Magnesium Alloys: Properties and Applications
- Metallic Glasses and Amorphous Alloys
- Superconductivity in MgB2 and Alloys
- Fatigue and fracture mechanics
- Mechanical Behavior of Composites
- Wnt/β-catenin signaling in development and cancer
- Cancer-related gene regulation
- Computational Fluid Dynamics and Aerodynamics
- Fluid Dynamics Simulations and Interactions
- Microstructure and Mechanical Properties of Steels
- Advanced Surface Polishing Techniques
Hiroshima University
2024-2025
Kyoto University
2015-2024
Materials Science & Engineering
2014-2024
Gifu University
2022-2024
Hiroshima University Hospital
2024
The University of Tokyo
2013-2023
Hoshigaoka Medical Center
2008-2023
Izumi City General Hospital
2022
Onomichi City University
2020
Bridgestone (Japan)
2014-2016
The behavior of precipitation hardening in two types Fe-Cu alloys has been investigated by means mechanical tests as well small angle neutron scattering measurements. integrated intensity increased first and reached a constant corresponding to the completion reaction, while particle radius monotonically with aging time, where Vickers hardness yield stress maxima, then decreased. interaction force dislocation due each precipitate was very compared Orowan mechanism. After discussion based on...
Small-angle neutron scattering (SANS) measurements were carried out to investigate the structural change during early stage of phase decomposition in Fe-Cu-Ni-Mn quaternary alloy. Data analysis intensities showed that nuclear Guinier radius becomes larger than magnetic one beyond about 2 nm. This is suggested be attributable formation segregated layer enriched by Ni and Mn around fcc copper-rich precipitate. segregation was confirmed directly atom-probe (AP) approved from a thermodynamic...
ABSTRACT Background To identify the predictors of local recurrence and distant metastasis after radical surgery for stage I–III colorectal cancer. Materials Methods Patient tumor characteristics, clinicopathological stages, perioperative factors, postoperative outcomes, including recurrence, patients who underwent primary resection were evaluated in this multicenter retrospective analysis. Univariate multivariate regression analyses performed to risk factors recurrences, with a focus on...
BL-10C and BL-15A at the Photon Factory, which became operational in 1982, are some of oldest small angle X-ray scattering beamlines world. Recently, both were upgraded for two-dimensional (2D) SAXS-WAXS experiments. A wide-area imaging plate (IP) detector a fast-readout flat panel (FP) installed BL-15A, respectively. Preliminary experiments systems showed promising results.
The Mg-Y-Zn ternary alloy system contains a series of novel structures known as long-period stacking ordered (LPSO) structures. formation process and its key concept from viewpoint phase transition are not yet clear. current study reveals that the transformation is traditional spinodal decomposition or structural but, rather hierarchical transformation. In this transformation, clustering occurs first, spatial rearrangement clusters induce secondary eventually lead to two-dimensional ordering...
Small-angle neutron scattering (SANS) measurements were carried out in order to investigate the structure change during early stage of phase decomposition an Fe-1.17 at% Cu alloy. The integrated intensity first increased and then saturated beyond 2·104 s aging at 773 K, while Guinier radius with time exponent 1/3, emphasizing coarsening process precipitates. peak hardness was observed, when reached 2.8 nm. ratio magnetic component nuclear one has been analyzed terms chemical composition...
GISAXS measurements with scattering contrast matching at the silicon K-edge were performed to obtain depth-resolved information on structural changes in as-spun and annealed PS-b-P2VP thin films substrate. Depth-sensitive of film revealed a vertically oriented fingerprint-like lamellar structure microphase separation distance 59 nm throughout entire film. The showed significantly reduced ordering surface depth about 30 nm, while order is preserved toward substrate interface. At same time, no...
We have studied the tensile behaviour of Bi2223 superconducting composite tapes at room temperature, and influence damages introduced temperature on critical current Ic n values 77 K. In measurement values, overall with a gauge length 60 mm was divided into six elements 10 in order to find correlation those local which constitute composite. From measured stress–strain curve calculated residual strain filaments, intrinsic fracture filaments estimated be 0.09–0.12%. When applied lower than...
The fracture toughness of a crystalline silicon carbide fiber, Tyranno‐SA ® , was determined by introducing an artificial notch directly into the fiber test specimens using focused‐ion (Ga + ) beam. relation between strength and size experimentally, while among size, diameter, applied stress at infinity, intensity factor analyzed finite element method. By applying result to experimental results, be .
A method to estimate the thermally induced residual strain accumulation under varying temperature in a Bi2223/Ag/Ag alloy composite superconductor was presented, which mechanical property values measured from stress–strain curves of samples with different states, value Bi2223 filaments tape at room by x-ray diffraction and reported coefficients thermal expansion constituents (Bi2223, Ag alloy) relevant range were incorporated. This applied change all high critical current type fabricated...
Abstract A GPU‐accelerated Conjugate Gradient solver is tested on eight different matrices with structural and numerical characteristics. The first four are obtained by discretizing the 3D Poisson's equation, which arises in many fields such as computational fluid dynamics, heat transfer so on. Their relatively low bandwidth condition numbers makes them ideal targets for GPU acceleration. We chose another from other end of spectrum, both ill‐conditioned very large bandwidth. This paper...
Abstract Incomplete Lower-Upper (0) (ILU(O)) factorization is a very effective preconditioning method of iterative solvers for large-scale linear sparse systems in scientific and engineering computations. However, this requires global data dependency, which not ideal parallel computations locality utmost importance. In paper, the localized ILU(O) implemented various types solvers. This provides good parallelization on each processor. The performance developed system was evaluated workstation...
Eight laboratories in Germany, Japan, U.K., and U.S. participated the VAMAS round robin. The fracture toughness of silicon nitride at room temperature 1200 deg; C was measured by three methods: single‐edge V‐notched beam (SEVNB), precracked (SEPB), chevron notched (CNB). obtained values show hardly any crosshead speed dependence, irrespective test atmosphere. Results may have been influenced a small amount slow crack growth, but distinct R ‐curve behavior could not be detected within scope...