A pulsed high voltage was applied to logs for mushroom cultivation to investigate an effect of pulse high voltage on mushroom growth. Inductive energy storage system was utilized to construct a pulsed power generator with compact size. Copper fuse of 0.03 mm diameter was used as an opening switch to interrupt large circuit current in short time. The voltage charged in primary energy storage capacitor was multiplied using secondary energy storage inductor. The output voltage of the pulsed power generator was 120 kV with 100 ns pulse width at 14 kV charging voltage of 0.22 µF primary energy storage capacitor and 15 µH secondary energy storage inductor. This pulsed high voltage was applied to 90 cm length logs inoculated Pholiota nameko fungus. The yield of Pholiota nameko mushrooms was successfully improved with the pulse voltage stimulation. The total weight of the cropped Pholiota nameko after the pulse voltage stimulation was 6.3 kg for fifteen logs and this value was 1.5 times larger than 4.3 kg of total weight without the stimulation. The number of logs with lower than 0.27 kg cropped Pholiota nameko weight which was an average value for control group was only one in fifteen, whereas four logs in control group showed almost zero weight of cropped Pholiota nameko.
Pulsed high voltages were applied to logs for mushroom culturing to clarify an effect of the pulse voltage stimulation on fruit body formation of basidiomycetes i.e. mushroom. Inductive energy storage system was combined with Marx type pulsed power generator for construction of a pulsed power generator with compact size and high output voltage. The output voltage of 50 ns pulse width was applied to natural logs for culturing Lentinula edodes, Pholiota nameko and Naematoloma sublateritium as an electrical stimulation. The experimental results clearly showed that the fruit body formation for some kinds of mushroom was improved to be more than 1.5 times total weight of the formed fruit body by applying pulse voltage as electrical stimulation. The total weight of the cropped mushroom increased with increasing stimulation number. The increase of the total weight of cropped mushroom was mainly caused by the increase of the size for each fruit body.
This paper describes a highly versatile "System LCD" which has been developed for mobile applications. A key feature of the display is a multi-format capability to enable both the color depth and the spatial resolution to be dynamically controlled according to the application. This advanced functionality is realized by integrating a novel source-driver, binary-driver and clock-generator onto the panel. A 3.7" LCD with three principal display formats has been successfully fabricated using low temperature CG-Silicon technology. The power consumption in each format has been measured at 14mW for VGA 8mW for QVGA/Full-color and 2mW for QVGA/Monochrome. We believe this versatile display technology, which combines both high performance and low power consumption, will be essential for the next generation of mobile products. a) Full-color VGA b) Full-color QVGA Figure 5: Photographs of fabricated 3.7" panel SID 02 DIGEST • 797
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