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Serratia marcescens FS-3, isolated from a soil sample in the southwestern area of Korea, exhibited a strong protease activity of 60.7U/ml after 3 days of incubation. The protein removal from natural crab shell wastes with 10% S. marcescens FS-3 inoculum was 84% after 7 days of fermentation. At the same time, 47% demineralization occurred. When the shell waste was treated with 1% Delvolase ® ...
Summary form only given. Flux compression generators (FCGs) are devices that convert explosive energy into electromagnetic energy. FCGs are ideally suited for storing electromagnetic energy into an inductive load of low impedance, but not good for supplying fast-rising high-voltage pulse to a load of high impedance. For the purpose of powering high impedance loads such as microwave generators by using...
Successive two-step fermentation was carried out from red crab shell wastes for biological extraction of chitin in combination of the 1st step with a lactic acid bacterium Lactobacillus paracasei subsp. tolerans KCTC-3074 and the 2nd step with a protease producing bacterium Serratia marcescens FS-3, and vice versa. In the 1st step fermentation with KCTC-3074, the pH decreased rapidly from pH 6.90...
For some pulsed transformers, a primary coil should bear severe mechanical stresses caused by high-current (up to MA) pulses, and a secondary coil should be sufficiently insulated so that electrical breakdown would not occur owing to high voltage. To satisfy the above conditions, we applied two techniques in designing a relatively compact air-core foil-wound step-up pulsed transformer. A tapered secondary...
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