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A growing number of nonlinear EEG studies have elucidated the reduced fractality in Alzheimer's disease (AD). However, despite the importance of studying EEG dynamics within physiologically relevant frequency ranges, far fewer studies have explored temporal-dependent fractal properties in AD. This study was aimed at assessing the temporal-scale specific fractal properties in AD using Higuchi's fractal...
An injection-locked magnetron with an external oscillator was investigated to obtain the parameters of the equivalent circuit model. The magnetron was locked over the ratio of the input power to output power of −26 dB and had the resonance characteristics of a parallel LCR circuit model. Increasing the input power caused the anti-resonance frequency to become the original frequency of the magnetron;...
High-Sc-content ScAlN thin films have attracted significant attention because of their strong piezoelectricity. Akiyama et al. found that the piezoelectricity of ScAlN thin films increases monotonically with increasing Sc concentration, r. The piezoelectricity reaches a maximum at r = 43 at%, at which point the piezoelectric coefficient, d33, is five times that of pure AlN. Hashimoto et al. reported...
Polyoxometalates (POMs) is a unique metallic cluster that exhibit very strong acidic and oxidative catalysis with less corrodibility. In this paper, we report two examples of POM reaction systems under microwave irradiation based on the microwave absorption mechanisms of POM-based catalysts. The microwave-susceptive solid catalyst exhibits non-equilibrium local heating in the vicinity of the catalyst...
Ultrasonic droplet levitation has recently been drawing attention as a way of non-contact transportation. Many experiment revealed that the shape changes or streaming field on the levitating droplets, however, quite small number of numerical simulation have discussed this phenomenon including fluid dynamics within the droplet. In this paper, the calculation result on a streaming field on the levitated...
To estimate the distribution of the elastic constants over tissue samples, we measure the propagation velocities of the surface acoustic wave (SAW) at each point of the samples using a scanning laser Doppler velocimeter, which are displayed as two-dimensional maps. In a pork sample, the SAW velocity in fat is experimentally shown to be faster than that in lean meat, which is well recognized from the...
We demonstrate a new technique for measuring the propagation velocity of Rayleigh wave, or surface acoustic wave (SAW), using swept-source optical coherence tomography (OCT). We establish a theory for calculating the SAW velocity of tissues based on the measured OCT images, which is then experimentally verified using agar and tissue samples. The SAW velocity calculated by this technique agrees well...
Chemical reactions conducted under microwave irradiation have high reaction rates and high selectivity, but these reaction rates are not always reproducible. To achieve reproducibility, a microwave high power amplifier module (HPA) with an ultra precise oscillator and elliptical applicator is developed. This HPA has up to 500 W average power and generates pure 2.45-GHz sine signal. With these features,...
Beam patterns in a composite-based multiple-resonance transducer are discussed. Vibration of transducer and beam pattern are simulated using finite element analysis. By dividing one side of electrode of the transducer into inner and outer electrodes, frequency dependence of the beam is suppressed. To optimize the beam, the area ratio was determined to be 1:3, all part of the transducer vibrates in...
In this paper, our research objective is to develop a database virtualization technique so that data analysts or other users who apply data mining methods to their jobs can use all ubiquitous databases in the Internet as if they were recognized as a single database, thereby helping to reduce their workloads such as data collection from the Internet databases and data cleansing works. In this study,...
Nowadays, we can easily obtain a copy of practically any used program in our open source community for learning. However, the reality is that the level of such practically used programs is often complex and of such a large scale so that it is not as easy to understand them as one might expect. We believe that we do need some kind of environment to help the learner read and understand programs. Learning...
In this paper, our research objective is to develop a database virtualization technique so that data analysts or other users who apply data mining methods to their jobs can use all ubiquitous databases in the Internet as if they were recognized as a single database, thereby helping to reduce their workloads such as data collection from the Internet databases and data cleansing works. In this study,...
In this paper, our research objective is to develop a database virtualization technique so that data analysts or other users who apply data mining methods to their jobs can use all ubiquitous databases in the Internet as if they were recognized as a single database, thereby helping to reduce their workloads such as data collection from the databases and data cleansing works. In this study, firstly...
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