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Summary form only given: Recently low-frequency (LF: 10-100 kHz) dielectric-barrier-discharge (DBD)-driven micro-plasma jet proposed by Teschke et al. is attracting interests. In this plasma jet, emission from the jet is not continuous: bright part like a "bullet" propagates along the plasma jet and its velocity is about 1000 times larger than that of gas flow. In our previous work, the...
In these days, the damage of hot springs quality by bacilli is getting serious problem. The bacilli can be killed out by heating, chlorination or ultraviolet rays irradiation in general. However, some of bacilli have the tolerance in heat and chlorine, on the other hand they do not have the tolerance in ultraviolet rays. Therefore, most bacilli can be killed out by using ultraviolet rays (Yoshino,...
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