6 research outputs found
Preparation of a-alkyl-glycerols
Ohly a certain number of homologues of the normal a-alkyl-glycerols such as a-methyl- and a-ethyl-glycerol are known at present. The first is obtained by boiling 2 ,3-dibromo-butanol-1 with water and the second by the oxidation of ethyl-vinyl-carbinol with potassium permanganate
Multiple vs. single harmonics AC-driven atmospheric plasma jet
In this paper, we report a comparison between the most commonly used single harmonics (sine voltage waveform) and the original multiple harmonics AC-driven atmospheric-pressure plasma jet. The designed multiple harmonics source was applied to a single-electrode plasma jet. In this research, we characterized and studied the advantages of a single-electrode jet which was powered with multiple harmonics voltage waves, fundamental frequency was varied between 5 and 60 kHz. Optical emission spectroscopy, electric probes and plasma jet visible length measurements lead to the conclusion that the optical emission intensity of emitting plasma species correlates with the discharge current RMS (Root Mean Square), whereas the jet visible length correlates with the electrode discharge voltage amplitude. These properties of the plasma jet cannot be obtained with single harmonics AC-driven plasma jets