A5034388321- Fluid Dynamics and Turbulent Flows
- Fluid Dynamics and Thin Films
- Aerosol Filtration and Electrostatic Precipitation
- Fluid Dynamics and Vibration Analysis
- Earthquake and Tsunami Effects
- Heat Transfer and Optimization
- High voltage insulation and dielectric phenomena
- Heat Transfer and Boiling Studies
- Nanofluid Flow and Heat Transfer
- Fluid Dynamics and Heat Transfer
- Coastal and Marine Dynamics
- Vibration and Dynamic Analysis
- Lightning and Electromagnetic Phenomena
- Characterization and Applications of Magnetic Nanoparticles
- Heat Transfer Mechanisms
- Engineering Applied Research
- Lattice Boltzmann Simulation Studies
- Infrared Target Detection Methodologies
- Electrohydrodynamics and Fluid Dynamics
- Plasma Applications and Diagnostics
- Nonlinear Dynamics and Pattern Formation
- Gas Sensing Nanomaterials and Sensors
- Solidification and crystal growth phenomena
- Surface Modification and Superhydrophobicity
- Oceanographic and Atmospheric Processes
Akita University
2013-2024
Kyushu Sangyo University
2024
Nerima General Hospital
2020
OLVG
2019
Toshiba (Japan)
1981-2019
Tokyo University of Science
2018
Japan Aerospace Exploration Agency
2016
Kagoshima University
2009-2015
Chiba University
1998-2014
Catholic University of America
2011-2013
Photocatalytic TiO2/SiO2 coatings with excellent superhydrophilic wettability were prepared on light-weight polycarbonate substrates for self-cleaning applications. The effect of distinct SiO2 concentrations (0–40%) in TiO2 the morphology, wettability, UV–Vis transmittance, haze, and durability was studied detail. 20% silica showed wetting properties a smooth uniform morphology more than 85% transmittance. lower haze value confirms their clear optical appearance. A low-friction layer...
The effects of additional gas composition on the corona discharge characteristics in a pipe with nozzle electrode system and NOx removal for flue gases are experimentally investigated. consists mixture Na+O/sub 2/+NH/sub 3/ small amount Ar or CO/sub 2/, is introduced to stream from through discharging zone at tip nozzles. results show that modes significantly influenced by mixture. Both NO/sub x/ reduction rate energy yield increase decreasing input power. NO can be optimized type flow...
BACKGROUND While previous clinical studies have shown a possible beneficial effect of the reperfusion performed at relatively late phase acute myocardial infarction ("late reperfusion") in preventing left ventricular enlargement, mechanism has not been clarified. METHODS AND RESULTS Of 89 patients with an initial anterior infarction, was successful 69. These 69 were divided into three groups according to time required achieve after onset symptoms: early-reperfused (< 3 hours from...
The effect of corona wire heating on the downstream ozone concentration profiles in an air-cleaning wire-duct electrostatic precipitator was studied experimentally. results show that depend significantly applied voltage and polarity. Significant concentrations were only observed a narrow region for positive coronas. For surface temperature profile measurements made using real-time IR thermoimage processing system, it heat generated by discharge alone increased few degrees centigrade. Ozone...
The duration of supercooling for erythritol, a promising phase change material with melting point 118°C, was investigated in glass tube using three small specimen volumes 0.025, 0.40, and 16.0 cm3 diameters 1.02, 10.0, 27.3 mm, respectively. measured by the temperature increase due to release latent heat under constant degree from 38 98°C. largely dependent on sizes, increased approximately 0.1 20000 min decrease size. effects size are discussed terms Johnson-Mehl-Avrami equation nucleation...
Abstract The effects of copper (Cu), silicon (Si), molybdenum (Mo), and nitrogen (N) as alloying elements on the microstructure corrosion behavior type 304 (UNS S30400) austenitic stainless ...
In order to improve ozone generation, a new type of ozonizer is proposed, where silent discharge and surface are generated in the separated spaces at same time. As applied voltage increased, begins first from inner coil electrode, then occurs gap between glass wall outer cylindrical electrode. It observed that enhanced generation by increases when on electrode becomes active. Hence, improved up 110 g/kWh case N/sub 2/+O/sub 2/ mixture as test gas 274 oxygen gas.
We investigated the formation mechanism of sidewall striations in etched holes with high aspect ratios, focus on roles energetic ions and fluorocarbon radicals. Striations were observed sidewalls ratios stacked dielectric films, despite smooth mask. Argon plasma treatment increased degree striation carbon mask, while was prevented a cyclic process consisting deposition step an argon step. The blanket films irradiated oblique ion beams order to simulate surface reactions ratio holes. oriented...
In order to improve ozone generation, a new type of ozonizer is proposed, where silent discharge and surface are generated in the separated spaces at same time. As applied voltage increased, begins first from inner coil electrode; then occurs gap between glass wall outer cylindrical electrode. It observed that enhanced generation by increases when on electrode becomes active. The improved up 110 g/kWh for an N/sub 2/+O/sub 2/ mixture as material gas 274 oxygen gas.< <ETX...
In this paper, the effects of flue gas flow rate and seed on dynamics corona discharge current-voltage characteristics NO/sub x/ removal are experimentally investigated for a radical shower system. The have two operating modes which significant influence characteristics, where threshold value treatment to ratio is about 8. hysteresis observed in For longer operational time, current significantly changes with time. When operation apparatus starts at relatively low applied voltage, under...
The mechanism of recrystallisation observed at room temperature in electrodeposited Cu films has been examined light the enhancement metal atom diffusion by hydrogen induced superabundant vacancies. Thermal desorption spectroscopy revealed that from acid sulphate bath containing some specific additives showed a pronounced peak, which was ascribed to break-up vacancy–hydrogen clusters. amount desorbed comparable vacancy type clusters estimated previous positron annihilation experiments. grain...
The focal plane assembly for the Thermal Infrared Sensor (TIRS) instrument on NASA's Landsat Data Continuity Mission (LDCM) consists of three 512 x 640 GaAs Quantum Well Photodetector (QWIP) arrays. arrays are precisely mounted and aligned a silicon carrier substrate to provide continuous viewing swath 1850 pixels in two spectral bands defined by filters placed close proximity detector surfaces. QWIP hybridized Indigo ISC9803 readout integrated circuits (ROICs). were evaluated from four...
Abstract An experimental investigation has been conducted to reduce NOx from combustion flue gases by means of corona discharge activated ammonia radical shower methods. Experiments were for pure nitrogen-NO, wet air-NO, and simulated at a gas flow rate 3 l/min. The results showed that the reduction increased with increasing activation voltage. In case air-NO mixture gases, efficiency 100% was achieved. deposited NH4NO3 aerosol particles have significant effect on stability intense streamer...
Sequential transitions of the thermal convection in a square cavity heated from below are investigated up to time periodic state by numerical simulation. The flow field is assumed be two-dimensional and all boundaries rigid perfectly conducting as mathematical model. Prandtl number fixed P =7. Three typical solutions found for three values Rayleigh R . To explain results simulation, stability motionless state, nonlinear equilibrium convection, states investigated, bifurcation diagram...
Mass measurement using a relay feedback system was studied experimentally. The has an on-off with hysteresis and switches force acting on the object in relation to its velocity. Such nonlinear control induces limit cycle system. mass of is determined from period this cycle. apparatus manufactured for experimental study uses two voice coil motors (VCM's), one which driving other generating prescribed disturbances. effects parameters disturbances accuracy were examined