A5004328764- Fusion materials and technologies
- Ion-surface interactions and analysis
- Diamond and Carbon-based Materials Research
- Nuclear Materials and Properties
- Graphene research and applications
- Metal and Thin Film Mechanics
- Plasma Diagnostics and Applications
- Fungal Plant Pathogen Control
- Synthesis and Biological Evaluation
- Surfactants and Colloidal Systems
- Pesticide and Herbicide Environmental Studies
- Urban and spatial planning
- Advanced Physical and Chemical Molecular Interactions
- Cellular Mechanics and Interactions
- Force Microscopy Techniques and Applications
- Synthesis and Characterization of Heterocyclic Compounds
- High-pressure geophysics and materials
- 3D Printing in Biomedical Research
- Advanced materials and composites
- Quantum, superfluid, helium dynamics
- Photonic and Optical Devices
- Boron and Carbon Nanomaterials Research
- Advanced Chemical Physics Studies
- Psychosocial Factors Impacting Youth
- Geotechnical Engineering and Soil Stabilization
National Institute for Fusion Science
2016-2025
National Institutes of Natural Sciences
2008-2025
The Graduate University for Advanced Studies, SOKENDAI
2008-2025
Niigata University of Health and Welfare
2022-2024
Hokkaido Agricultural Research Center
2019-2024
The University of Tokyo
2004-2024
Chuo University
2021-2024
University of Tokyo Hospital
2021-2024
National Agriculture and Food Research Organization
2024
Yokogawa Electric (Japan)
2012-2022
The professionalism of hospital workers in Japan was challenged by the pandemic (H1N1) 2009. To maintain function under critical situations such as a pandemic, it is important to understand factors that increase and decrease willingness work. Previous hospital-based studies have examined this question using hypothetical events, but so far has not been an actual pandemic. Here, we surveyed influenced motivation hesitation work soon after 2009.Self-administered anonymous questionnaires about...
Aims: In order for hospitals to work efficiently in a pandemic, it is important know how pandemic affects the hospital staff. The aim of present study was investigate psychological impact (H1N1) 2009 on workers and affected by characteristics hospital, gender, age, job environment. Methods: late June 2009, soon after had ended Kobe city, Japan, questionnaire distributed consisting questions sociodemographic characteristics, 19 stress‐related Impact Event Scale (IES) all 3635 employees at...
Operational tolerance (graft acceptance in an immunosuppression (IS)-free environment) after living-donor liver transplantation (LDLT) could occur by our elective protocol some patients. There is, nevertheless, no reliable parameter to monitor patients who may discontinue IS without a risk of rejection. To identify such parameters, we systemically phenotyped peripheral blood mononuclear cells from operationally tolerant An increase was observed the frequency CD4+CD25high+ cells, B and...
In fusion reactors, surfaces of plasma facing components (PFCs) are exposed to high heat and particle flux. Tungsten Copper alloys primary candidates for materials (PFMs) coolant tube materials, respectively, mainly due thermal conductivity and, in the case tungsten, its melting point. this paper, recent understandings future issues on responses tungsten Cu environments (high flux (including T He), flux, neutron doses) reviewed. This review paper includes; Tritium retention (K. Schmid M....
As the finalization of a hydrogen experiment towards deuterium phase, exploration best performance plasma was intensively performed in large helical device. High ion and electron temperatures, Ti Te, more than 6 keV were simultaneously achieved by superimposing high-power cyclotron resonance heating onneutral beam injection (NBI) heated plasma. Although flattening temperature profile core region observed during discharges, one could avoid degradation increasing density. Another key parameter...
For the purposes of long-term use tungsten divertor walls, formation process fuzzy nanostructure induced by exposure to helium plasma was studied. In present paper, nanostructure's has been successfully reproduced new hybrid simulation method in which deformation material due pressure bubbles simulated molecular dynamics and diffusion atoms random walk based on Monte Carlo method. By results, surface height increased only when retention under steady state. It proven that growth brought about...
The bursting and expansion of helium bubbles near the surface a tungsten material were investigated by using molecular dynamics (MD) simulation. These bubble processes are considered to be important in formation mechanism fuzzy nano-structures. phase diagram occurrence was obtained our MD results simulation indicate that with radius 1.0 nm needs high pressure several tens GPa burst expand structures under scale ten nanometers. Moreover, from viewpoint dynamics, imply concavities convexities...
Helium plasma irradiation to various metals leads peculiar morphology changes as forming fiberform nanostructures called fuzz when a certain set of conditions is satisfied. In this Tutorial, we overview experimental observations about the growth process, conditions, rate, etc. on tungsten (W), and observed other metals. The mechanism, open questions growth, current understandings these issues are discussed based simulation theoretical works. Several applications (gas sensors photocatalytic...
Mechanical forces are critical for the emergence of diverse three-dimensional morphologies multicellular systems. However, it remains unclear what kind mechanical parameters at cellular level substantially contribute to tissue morphologies. This is largely due technical limitations live measurements forces. Here we developed a framework inferring and modeling cell-cell interactions. First, by analogy coarse-grained models in molecular colloidal sciences, approximated cells as particles,...
Using first-principles calculations, we have determined key properties of Ar and Ne in bcc W that relate to the possible bubble formation implanted atoms. The most stable interstitial site Ar/Ne is tetrahedral site, as case H He. An atom causes substantial strain surrounding atoms low electron-density region. calculated migration energy both very small, less than 0.2 eV H. We binding energies nearby found a strong dependence atomic species. attractive interaction between largest. Owing such...
Tungsten was exposed to pure Ar or Ne plasmas over 1550 K at several incident ion energies. Even under the irradiation condition that tungsten nanostructure is formed by He plasma irradiation, holes/bubbles and fiberform nanostructures were not on surface exposure plasmas. In addition, results from energy dispersive X-ray spectroscopy supported facts did remain in sample. We will discuss reason for differences damage noble gas
Measuring mechanical forces of cell–cell interactions is important for studying morphogenesis in multicellular organisms. We previously reported an image-based statistical method inferring effective potentials pairwise by fitting cell tracking data with a theoretical model. However, whether this applicable to tissues non-cellular components such as cavities remains elusive. Here we evaluated the applicability cavity-harboring tissues. Using synthetic generated simulations, found that effect...
The current–voltage properties of organic light-emitting diodes were analyzed based on the assumptions that: (1) they are determined by carrier injection processes, and (2) charges accumulated near organic/organic interface. From results, amount was estimated. also from analyses transient currents observed applying pulsed voltage to devices. By deconvoluting current components, discharge bulk layers evaluated. amounts these two methods showed good agreement. All results indicated that...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSyntheses of Hybrid Anionic Surfactants Containing Fluorocarbon and Hydrocarbon ChainsNorio Yoshino, Katsumi Hamano, Yota Omiya, Yukishige Kondo, Atsushi Ito, Masahiko AbeCite this: Langmuir 1995, 11, 2, 466–469Publication Date (Print):February 1, 1995Publication History Published online1 May 2002Published inissue 1 February 1995https://doi.org/10.1021/la00002a016RIGHTS & PERMISSIONSArticle Views438Altmetric-Citations61LEARN ABOUT THESE...
We report the chemical interaction between a single hydrogen atom and graphene via classical molecular dynamics simulation using modified Brenner empirical bond order potential. Three interactions, that is, adsorption, reflection, penetration, are observed in our simulation. The rates of interactions depend on incident energy temperature. This dependence can be explained by following mechanisms: (1) experiences repulsive force due to π electrons. (2) adsorbs transforms its structure an...
A microtracking concentrator photovoltaics (CPV) module with a bi-convex aspheric lens array was designed, and its performance numerically experimentally verified. The shape optimized considering the yearly incidence characteristics of direct solar radiation. at 127 × found to converge 68.7% cumulative radiation cells be robust against changes in installation azimuth tilt angles. incidence-angle prototype agreed well design analysis. In an outdoor test using CPV triple-junction cell, power...
Abstract Nitrogen is a very common element, comprising approximately 78% of Earth’s atmosphere, and an important component various electronic devices while also being essential for life. However, it challenging to directly utilize dinitrogen because the highly stable triple bond in this molecule. The present review examines use non-equilibrium plasmas generate controlled electron impacts as means generating reactive nitrogen species (RNS) with high internal energy values extremely short...
Cognitive motivational processes mediated by achievement goal tendencies were examined based on Dweck's model. To conduct this study, three instruments constructed in order to measure tendencies, conceptions of ability and effort, learning behavior. These administered 182 junior high school students. As the first step data analysis, factor analyses for measures conducted each respective measurement. Concerning two kinds performance found addition tendency. Also, effort detected: centered,...
We examine the binding energy of helium trapped in a tungsten monovacancy using first-principles calculation based on density functional theory (DFT) and investigate trapping multiple atoms within monovacancy. Calculation shows that can contain at least nine atoms. find six monovacancy-trapped form kind cluster structure with an octahedral configuration, is tightly bound around located center W cube.
Athletes, particularly ball game players, benefit from focusing on fast-moving visual targets. In this study, we hypothesized that athletes, specifically professional basketball exhibit more accurate saccadic eye movements compared to non-athletes. To test hypothesis, assessed the of eight female players Niigata Albirex BB (basketball player group) and them sex-matched healthy volunteers a previous study. Eye were measured using Score device. The target moved continuously for 20 s at speed...