A5015889987- Multilevel Inverters and Converters
- Advanced DC-DC Converters
- Fluid Dynamics and Turbulent Flows
- Aerodynamics and Fluid Dynamics Research
- Microgrid Control and Optimization
- Induction Heating and Inverter Technology
- Aerodynamics and Acoustics in Jet Flows
- Microwave Engineering and Waveguides
- Fluid Dynamics and Vibration Analysis
- Silicon Carbide Semiconductor Technologies
- Photonic and Optical Devices
- Optical Network Technologies
- Sports Dynamics and Biomechanics
- Semiconductor Lasers and Optical Devices
- Mechanical Circulatory Support Devices
- Medical Imaging Techniques and Applications
- Semiconductor materials and devices
- Electromagnetic Simulation and Numerical Methods
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Analysis
- Sports Analytics and Performance
- Electromagnetic Effects on Materials
- Meteorological Phenomena and Simulations
- Cardiac Imaging and Diagnostics
- Electromagnetic Compatibility and Noise Suppression
Tohoku University
2016-2025
Hokkaido University
2014-2016
Tokyo Institute of Technology
2011-2013
Okayama University
1987-2013
Mitsubishi Electric (Japan)
1992-2011
Tokyo Metropolitan University
2004-2011
Tokyo Women's Medical University
2008-2010
Mitsubishi Group (Japan)
2005-2009
Doshisha University
2009
Mitsubishi Electric (United States)
2008
Radioiodinated erythropoietin (Epo) was bound specifically to the cells of two non-erythroid clonal lines, PC12 and SN6, which expressed neuronal characteristics. The binding time-, cell number-, dose-dependent reversible. Although cloned Epo receptor from (derived rat adrenal medulla) identical that erythroid cells, significant differences in ligand properties between lineages were found; 1) had a single class sites with very low affinity (Kd = 16 nM), whereas classes different affinities...
The equivalent circuit of an inductive strip inserted in the middle a waveguide parallel to E plane is analyzed theoretically by evaluating reactance T network which was obtained Rayleigh-Ritz variational technique. A design theory for bandpass filter this type derived from circuit. confirmation between and experimental resuIts also shown.
The development and aging of four brain midline structures--the pituitary gland, pons, cerebellar vermis, corpus callosum--were studied. dimensions area these structures were measured by means midsagittal magnetic resonance imaging. study group consisted 94 patients newborn to 15 years old 49 seven volunteers 16-60 old. Except for growth spurts in the 1st year 10-15-year age range, gland showed linear growth. callosum all exponential vermis sharpest 1st-year spurt, followed pons. a decrease...
A lumped element Y circulator using ferrite, having a mesh mechanism in place of the center conductor an ordinary strip line circulator, is proposed. theory developed relating to bandwidth, insertion loss, and temperature dependence reactive energy tensor permeability bandwidth enlargement discussed on basis equivalent network. The size approximately 1~2 cm diameter for VHF UHF bands characteristics are, example, about 50 percent 20-dB isolation, 2-dB loss at 600-Mc/s frequency. It also...
Profound abnormalities of the brain were noted in a 6-year-old Japanese boy with congenital muscular dystrophy (CMD). Pathological alterations included diffuse cerebral and cerebellar micropolygyria, bilateral temporal agyria, abnormal fusion gray matter basal portions both frontal hemispheres. Microscopically, architecture cortices was severely distorted, irregular arrangement neurons increased vascularization. Skeletal muscles showed dystrophic changes rather than neurogenic atrophy. Eight...
To investigate the relationship between cerebral cortical function and white matter myelination in visual pathway evaluation of normal brain development.The authors performed quantitative analysis detected with conventional T1-weighted spin echo (SE) MRI functional (fMRI) using echoplanar imaging photic stimulation 27 neurologically infants (age range, 0 to 22 weeks).An age-dependent gradual increase signal intensity was observed optic radiation on SE images, indicating progression...
The correction of the blockage effect is crucial in wind tunnel experiments, particularly for drag forces on bluff bodies with a large flow separation at leading edge. Maskell’s wake widely used method bodies. However, limited to separated that does not reattach. In this study, and methods were investigated due presence or absence leading-edge-separated shear layer reattachment field non-support interference produced using magnetic suspension balance system (MSBS). coefficient without wall...
Several dielectric-waveguide components utilizing appropriate metallized surface structures on dielectric ceramics are examined. Using magnetic walls, easily realized with ceramics, several of a type quite different from conventional hollow waveguide have been fabricated. Multistage bandpass filters (BPFs) tandem connection quarter-wave resonators the same waveguide; multistage BPFs coaxial in also shown. Components similar to earlier made smaller by taking image half-section. Coupling can...
Abstract We examined the effects of interleukin‐3 (IL‐3) and other hematopoietic cytokines on neurotransmitters, neurite formation, differentiation in cholinergic types neurons. IL‐3, granulocyte‐macrophage colony‐stimulating factor (GM‐CSF), macrophage factor, granulocyte erythropoietin (Epo) elevated choline acetyltransferase (ChAT) activity septal cell line SN6 as well primary cultured neurons without increasing protein contents cells. These were dose‐dependent optimal doses not different...
With the objective of developing a small blood pump with levitated rotor, we propose design scheme for an axial-type self-bearing motor. The axial type motor, which is basically composed disc motor and magnetic bearing, controls both rotation translation rotor. proposed similar to bidirectional except changing magnitudes sides flux control attractive force. However, radial tilt directions rely on passive stability, and, therefore, rotor has poor damping might cause damage constituents....
The concatenation of low-density parity-check and Reed-Solomon codes for forward error correction has been experimentally demonstrated the first time in this letter. Using a 2-bit soft-decision large-scale integration high-speed field-programmable gate arrays, net coding gain 9.0 dB was achieved with 20.5% redundancy four iterative decoding an input bit-error rate 8.9 times 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-3</sup> at 31.3 Gb/s.
Most Japanese pediatric neurologists attempt other treatments before using adrenocorticotropic hormone (ACTH) therapy for West syndrome (WS), and even then, they use only a low-dose synthetic ACTH to avoid serious adverse effects. In this multi-institutional study, the authors analyzed initial effects, long-term outcome in patients treated with Japan.The medical records of 138 WS, who were first time at authors' institutions between 1989 1998, analyzed.At end therapy, excellent effect on...
The resonant frequency of a TE/sub 01delta//spl deg/ dielectric resonator was obtained by assuming cylindrical surface containing the circumference as magnetic wall. In such method, error less than 10 percent. this short paper, is variational where impedance variated from infinite value. theoretical value has good agreement with our experimental result an 1
As accuracy of optimization can not be guaranteed without high-quality samples, the distribution a finite number evaluation points where experiments should conducted in design space is an important issue, particularly when experiment to obtain sample expensive. To utilize limited represent space, optimal latin-hypercube (OLHD), with considerable space-filling quality, widely used as methodology (DOE). However, OLHD generation requires significant time. This study focuses on further...
A 3-dB directional coupler is described which fabricated by installing a vertical second printed circuit board on main board. The added substrate significantly increases the freedom of design parameters. Coupling parameters are easily controlled changing either dielectric constants or thicknesses substrates. This makes almost any coupling constant available along with good isolation and suitable input impedance. three-dimensional structure also use space, resulting in compact structure....
The insertion loss, the bandwidth ratio, and nonlinearity of a high-power UHF circulator are discussed generally with regard to characteristics, volume, filling factor ferrite. Theory experiment made on ferrite, where either surface ferrite comes into contact air. A wideband technique in improving narrowband that is essentially result also described. To avoid center conductor heating effect, without Experiments have proven that, for nonlinearity, threshold power by spinwave occurs...
Two-dimensional local wall suction is applied to a fully developed turbulent boundary layer such that near-wall turbulence structures are completely sucked out, but most of the vortices in original outer can survive and cause resulting laminar flow undergo re-transition. This enables us observe clarify whole process by which suction-surviving strong vortical motions give rise low-speed streaks eventually generate turbulence. Hot-wire particle image velocimetry (PIV) measurements show...
A 12-GHz low-noise converter consisting of a planar circuit mounted in waveguide is described. This consists metal sheet with proper patterns that inserted the middle parallel to E plane. All elements required for are pressed or etched. very useful low-cost mass production and good performance. measured noise figure 4.5 dB was obtained signal frequency 420-MHz intermediate frequency.
We focus on the spontaneous movements of young infants who have not yet acquired voluntary movements. Dynamical complexity and variability are characteristic points in spine position, which called general (GMs). studied GMs 8 normal 2 abnormal from 1 to 6 months old age. Kinematic analysis trajectories hands feet using a nonlinear prediction method revealed that u-shape change occurs around The were very complex with no clear coordination among limbs at age 3 months, while rhythmic...
This paper describes an all-digital delay-locked loop (DLL) architecture for over 667 Mb/s operating double-data-rate (DDR) type SDRAMs, which suppresses skews and jitters. Two novel replica adjusting techniques are introduced, in timing caused by the clock input data output circuits reduced a hierarchical phase comparing check method with slow tester. Further, improved interpolating jitters boundary of fine coarse delays. A 512-Mb test device is fabricated using 0.13-/spl mu/m DRAM process...
The design theory and experimental results of a proposed broad-band technique an isolator are presented. not only has backward loss but also low insertion loss. network constants the performance obtained in connection with magnetic ferrite, they confirmed by data. trial ultrawide-band 20-dB isolation over frequency band from 70 MHz to 800 MHz.
An effective system control method is presented for applying a three-phase current-source PWM convertor with deadbeat controller to active power filters (APFs). In the shunt-type configuration, APF controlled such that current drown by from utility equal harmonics and reactive required load. To attain time-optimal response of supply current, two-dimensional scheme applied control. cancel both delay in DSP strategy, an adaptive line enhancer (ALE) introduced order predict desired value three...