In this article, we introduce studies being conducted in cooperation with Kyoto University Hospital in relation to new medical and healthcare services that make use of various lifelogs in every-day life as well as med...
The breakdown strength of vegetable-based oil (VBO) and mineral oil is compared by means of experimental determination of breakdown voltage. These oils were tested under AC and positive lightning impulse voltages for ...
The breakdown strength of vegetable-based oil (VBO) and mineral oil is compared by means of experimental determination of breakdown voltage. These oils were tested under AC and positive lightning impulse voltages for uniform and non-uniform electrical field. The oil gap varied from 2 mm up to 85 mm. The results show same or higher AC breakdown strength of VBO compared to mineral oil for small gaps and uniform electrical field, whereas for lightning impulses and non-uniform field breakdown strength of VBO is reduced.
In this paper a Xenon filled coaxial dielectric barrierdischarge (dBd) has been studied to understand the high pressure, non-equilibrium, nonthermal plasma discharge. A quartz coaxial dBd tube (Id: 6mm, Od: 12 mm) at...
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In this paper a Xenon filled coaxial dielectric barrierdischarge (dBd) has been studied to understand the high pressure, non-equilibrium, nonthermal plasma discharge. A quartz coaxial dBd tube (Id: 6mm, Od: 12 mm) at 400 mbar Xenon filled pressure has been used in the experiment. different applied voltage waveforms at 30 kHz using rF generator as well as pulse power source have been applied to the discharge electrodes for the generation of microdischarges. Visual images of discharge and electrical waveform confirm the diffused type discharges. The knowledge obtained by dynamic processes of dBds in the discharge gap explains quantitatively the mechanism that is obtained in ignition, development and extinction of dBds. The behaviour of different discharge parameters has also been analyzed. From the experimental results and equivalent electrical circuit, the dynamic nature of equivalent capacitance has been reported. The relative intensity analysis of the second continuum of the Xe discharge (172 nm) has been carried out fordifferent applied voltages and it is found that the radiation power has increased with voltage.
A highly effective magnetic heat pump system using a permanent magnet with a rotational mechanism has been developed as a national project in Japan. The goal of ourresearch anddevelopment as a "Next Generation ...
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ISBN:
(纸本)9782362150074
A highly effective magnetic heat pump system using a permanent magnet with a rotational mechanism has been developed as a national project in Japan. The goal of ourresearch anddevelopment as a "Next Generation Heat Pump System" fordeveloping practical-use heat pump technology using the magnetocaloric effect is to establish prospects for early realization of a magnetic heat pump based on demonstration results. A magnetic heat pump was designed and produced using a cascading connection with multiple magnetocaloric materials so that a maximum refrigeration capacity of kW class was achieved, and efficiency (COP) at a temperature difference of 10 K or more was estimated. Also, research anddevelopment of magnetocaloric materials heat exchanger heat-transfer enhancement and pressure loss reduction techniques, a heat exchanger for magnetic heat pump cooling, magnetocaloric effect heat-transfer simulation technique, an arbitrary shape processing technology for the magnetocaloric materials were carried out.
For the first time, based on the high crystalline quality of n-GaN on Si template, highly efficient InGaN/GaN LEds grown on 4-inch silicon substrates comparable to those on sapphire substrates have been successfully d...
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ISBN:
(纸本)9781557529107
For the first time, based on the high crystalline quality of n-GaN on Si template, highly efficient InGaN/GaN LEds grown on 4-inch silicon substrates comparable to those on sapphire substrates have been successfully demonstrated. At driving current of 350 mA, the overall output power of 1 × 1 mm 2 LEd chips exceeded 420 mW and forward voltage was 3.2 V under un-encapsulated condition, which is the best value among the reported values of blue LEd grown on Si substrates. The internal quantum efficiency of 76% at injection current of 350 mAwas measured.
Super-laminates have been attracting attention since co-authors Ueda et al. reported that Mg/Cu super-laminates showedreversible hydrogenation anddehydrogenation at 473K. The Mg/Cu super-laminates were prepared by a...
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Super-laminates have been attracting attention since co-authors Ueda et al. reported that Mg/Cu super-laminates showedreversible hydrogenation anddehydrogenation at 473K. The Mg/Cu super-laminates were prepared by a repetitive fold androll method. Initial activation at 573 K led the super-laminates to absorb hydrogen at 473K. TEM observations of micro/nano-structures in the super-laminates were performed in order to clarify the process of hydrogenation anddehydrogenation at 473K, The as-rolled Mg/Cu super-laminates have laminated structures in size of sub-micrometer thickness composed of Mg and Cu layers with dense lattice defects. The super-laminates after initial activation keep laminated structure and have uniformly distributed pores with a sub-micrometerdiameter. It is considered that these micro/nano-structures of Mg/Cu super-laminates lead to lowerdehydrogenation temperature and better kinetics, which would contribute to achieve high performance hydrogen storage materials.
At the beginning of this decade, in early 2000, few disruptive technologies had been proposed to replace the industry standard Non-Volatile Memory (NVM) technology and to enlarge the Flash application base. A widely a...
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At the beginning of this decade, in early 2000, few disruptive technologies had been proposed to replace the industry standard Non-Volatile Memory (NVM) technology and to enlarge the Flash application base. A widely accepted statement was that if any technology will succeed, it will materialize in the next decade. As the end of this decade is approaching it can be noted that only one of the proposed technologies is demonstrating the capability to enter the broad NVM market and to be a mainstream memory for the next decade: the Phase Change Memory technology. PCM provides a new set of features interesting for novel applications, combining features of NVM anddrAM and being at the same time a sustaining and a disruptive technology.
An industry-wide trend has become evident in recent years that the rapiddeployment of MEMS system products into mobile phones and consumer electronics generates the paramount driving force from evolution to revolutio...
An industry-wide trend has become evident in recent years that the rapiddeployment of MEMS system products into mobile phones and consumer electronics generates the paramount driving force from evolution to revolution in manufacturing efficiency as well as supply chain and cost structures besides beside continuous improvement in product design and *** "CMOS-MEMS" is no doubt recognized widely as the central scene of future advance and growth the MEMS industry, while implicating even a broad and profound stretch again from the Moore's Law.
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