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The mechanism for the streamer-to-leader transition of a positive surface discharge in atmospheric air was studied from the viewpoint of gas heating in a discharge channel. In the experiment, a quartz glass having a conductive indium tin oxide (ITO) coated back-surface was used as an insulation material having a back electrode. The gas temperature change of an impulse surface discharge ranging from...
This paper reports characteristic of iron loss in two Induction Motors made with Soft Magnetic Composite core based on Finite Element Analysis. Two Induction Motors made with Soft Magnetic Composite are All SMC Induction Motor and Stator SMC Induction Motor. Iron loss at no-load running in the All SMC Induction Motor is smaller than that in the Stator SMC Induction Motor on the drive frequency 120Hz...
Interconnect technology is the key to the reliability of electronic devices. Electronic components are soldered to a printed circuit board (PCB). Major failure mode is thermal fatigue of solder joints since there is a big difference in the coefficient of thermal expansion (CTE) between soldered components. Underfill resin is used to improve the interconnect reliability. Resin can relief stresses in...
Interconnect technology is the key to the reliability of electronic devices. Electronic components are soldered to a printed circuit board (PCB). Major failure mode is thermal fatigue of solder joints since there is a big difference in the coefficient of thermal expansion (CTE) between soldered components. Underfill resin is used to improve the interconnect reliability. Resin can relief stresses in...
Currently, metabolic syndrome is one of the most all-too-common terms in Japan and it has been pointed out that the number of patients afflicted with lifestyle diseases such as hypertension, diabetes and hyperlipemia is rapidly growing. It takes many days to heal from lifestyle diseases completely, and prevention is the best way to keep us healthy. Furthermore it is well-known that dietary cure is...
High power 28GHz millimeter-wave radiation was applied to the fabrication of bulk AlN, Si3N4 and Al2O3. The millimeter-wave radiation enables to sinter these ceramics rapidly at several 100°C lower temperature than the conventional method. The rapid sintering is attributed to the enhancement of atomic migration due to the “non-thermal effect” of millimeter-wave. It is indicated that the millimeter-wave...
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