A5102787899- Multilevel Inverters and Converters
- Advanced DC-DC Converters
- Microgrid Control and Optimization
- Gold and Silver Nanoparticles Synthesis and Applications
- Robotics and Automated Systems
- Plasmonic and Surface Plasmon Research
- Industrial Gas Emission Control
- Photonic Crystals and Applications
- Induction Heating and Inverter Technology
- Nanomaterials for catalytic reactions
- Advancements in Battery Materials
- Catalysis for Biomass Conversion
- Catalytic Processes in Materials Science
- Interconnection Networks and Systems
- Food composition and properties
- Advanced Photocatalysis Techniques
- Real-Time Systems Scheduling
- Electromagnetic Compatibility and Noise Suppression
- Advanced Control Systems Optimization
- Advanced Machining and Optimization Techniques
- Advanced Surface Polishing Techniques
- Electric Motor Design and Analysis
- Network Time Synchronization Technologies
- Oxidative Organic Chemistry Reactions
- Copper-based nanomaterials and applications
Doshisha University
2024
Kobe University
2024
Kaneka (Japan)
2023
Hitachi (Japan)
2021
Chiba University
2017-2021
Nihon University
2011-2018
Osaka University
2015-2017
Graduate School USA
2015-2017
Toyonaka Municipal Hospital
2015-2017
Saga University
2016
Structural coloration of a monolayer Mie-resonant silicon (Si) nanospheres (NSs) produced by solution-based process is studied. It shown simulation that hexagonal close-packed Si NSs exhibits size-dependent structural color with peak reflectance ∼50%. The can be increased to over 90% introducing spaces between the NSs. high despite small coverage due very scattering efficiency Monolayers densely packed are from NS suspensions Langmuir–Blodgett method. monolayers exhibit 30–50%. insensitive...
UV irradiation of water containing HAuCl<sub>4</sub> and citric acid at room temperature successfully produces monodispersed Au nanoparticles. The size particles is easily tuned by the intensity light amount acid.
Recently, PCBN cutting tools have received a great deal of attention as material for to achieve high performance machining Inconel 718. In this study, turning and orthogonal experiments on 718 employing two types tool were conducted in order evaluate the life identify wear mechanisms, at wide range speeds. The results indicated that behavior significantly depend speed structures, tool, which has low CBN content with TiN-based ceramic binder, shows excellent resistance
Nickel-based superalloys such as Inconel 718 are known one of the most difficult-to-cut materials due to their mechanical and chemical properties tool life is extremely short. Recently, Cubic-Boron-Nitride (CBN) has received considerable attention a material for cutting tools already established itself in many areas machining. However, performance CBN still insufficient practical use, especially high speed machining 718. To overcome this problem, experiments on at wide range speeds (100...
This paper presents the magnetic suspension test results of a bearingless motor/generator for flywheel energy storage systems. A prototype is built on basis computed by Finite Element Method (FEM). It an outer rotor-type permanent magnet (PM) synchronous and rotor wrapped (CFRP). Thus, motor/generator, bearings are successfully integrated so that system configuration quite compact. In addition, coreless stator employed to decrease iron loss. The unbalance pull force much smaller than...
Photoreductive synthesis of colloidal gold nanoparticles (AuNPs) from Au3+ is one important process for nanoprocessing. Several methods have been proposed; however, there no report a method capable producing AuNPs with inexpensive reagents acting as both reductant and surface stabilizer, promoted solely under photoirradiation. We found that UV irradiation water benzoic acid successfully produces monodispersed AuNPs, where thermal reduction does not occur in the dark condition even at...
The emulsion prepared with β-cyclodextrin as an emulsifier (βCDE) is considered to be a Pickering emulsion. We examined the characteristics of βCDEs using captopril (CP) model drug, and studied in vitro skin permeation CP from through hairless mouse skin. stability βCDE was increased increasing βCD concentration conversely decreased concentration. yield stress value rheological measurement results suggested one factors determining βCDE, higher values were more stable. found that permeability...
This paper presents the experimental results of independent drives two induction motors (IMs) fed by a four-leg inverter with vector control method. The consists four legs and capacitors connected in series. Recently switch have been studied, but there are known to several disadvantages. First, balanced three-phase current cannot be obtained. Second, drift phenomenon is happened capacitor voltages fluctuation. analyzes cause unbalanced resolves about it Next, drive IMs method demonstrated...
The use of pressurized oxygen greatly enhanced catalytic activity for oxidative esterification propionaldehyde to methyl propionate with methanol using heavy-metal-free Pd/C and Pd/Al2O3. For example, the conversion propionaldehyde, selectivity propionate, yield 5 % Pd/Al2O3 were 99.9, 62.7, 62.6 %, respectively, at 1.5 MPa gas 333 K. This result demonstrated that Pb doping Pd catalysts was not needed achieve comparable activity, which runs contrary previous reports, in it had been suggested...
According to previous reports, the oxidative dehydrogenation of lactic acid pyruvic in an aqueous phase does not proceed with Pd/C, while Pd/C doped Te or Pb has catalytic activity at atmospheric pressure and 363 K NaOH solution a pH 8. Since use heavy metals, such as Pb, is inconsistent green chemistry, heavy-metal-free catalyst employed present study. The sodium lactate pyruvate 358 under pressurized oxygen 1 MPa proceeded favorably using no adjustment pH. Under oxygen, was similar that...
To improve the quality of a joint composed metallic micro-structural parts, novel resistance brazing method called "two-step method" has been developed. The target application two-step is fabrications medical devices and micro-machines. In this method, completed in two steps. first step performed with relatively low electric energy input so that uniformity surface contact condition between parts can be improved due to local melting subsequent solidification, optimal energizing for second...
This paper presents the experimental results of independent drives two induction motors (IMs) fed by a four-leg inverter with vector control method. The consists four legs and capacitors connected in series. Recently switch have been studied, but they several disadvantages. First, balanced three-phase current cannot be obtained. Second, drift phenomenon is happened capacitor voltages fluctuation. analyzes cause unbalanced resolves about it Next, drive IMs method demonstrated results....
This paper proposes the independent drive system of two permanent magnet synchronous motors (PMSMs) fed by a four-leg inverter (4LI) with vector control method. The 4LI consists four legs and capacitors connected in series. There are speed position controls PMSMs control, but there known to have several disadvantages. First, pulse width modulation (PWM) technique three-phase voltage source (VSI) is not directly applicable for because only phases must be modulated. Second, characteristics...
The authors built a humanoid robot which behaves the same as human in space concerned. mechanism and functions, such vision sensor, acoustic sensor loudspeaker, are mounted on this order that multi modal bidirectional communication between is possible. adopted parallel processing by CPUs. computers body mutually connected an Ethernet LAN. This LAN consists of cerebrum system motion can quickly perform conditioned reflex actions well does. By using wireless LAN, to outside connecting for...
Amino-substituted spirothiopyran promotes spontaneous aggregation of gold nanoparticles, producing the aggregates with tunable sizes and narrow size distributions.