Karel Havlíček

TL;DR: In this article, the authors examined nanofibre properties resulting from five different electrospinning methods when using polyurethane or polyvinyl butyral, and found that the fibres obtained by the AC method were predominantly fine and disordered with high porosity.

TL;DR: In this paper, a chemical modification of gum kondagogu using long-chain alkenyl groups of dodecenyl succinic anhydride (DDSA), an esterifying agent that introduces a 12-carbon hydrophobic chain to the tree gums, was investigated.

TL;DR: In this paper, the authors report on using electrospinning for biomaterials to obtain products with high sustainability and less harm to the environment, which is a growing public interest in utilizing biomass and biom materials.

TL;DR: In this article, an optimal structure for microfilament carriers for growth of nitrifying bacteria in the tertiary stage of wastewater treatment (post-nitrification) was demonstrated.

Abstract: This article presents the sterilization of bacteria using cavitation bubbles. Cavitation generated by ultrasound creates a cavitation cloud. Therefore is more advantageous to generate the cavitation bubbles by laser-induced breakdown, because it is possible to generate individual bubbles for the purpose of study single impact and physical mechanism of acting. The cavitation bubble is generated by a Nd: YAG 532nm laser beam, a short 10ns pulse. Here, we used optics to focus the laser beam and a high-speed camera to visualize characteristics the bubble. We used the method of long-distance microscopy and shadowgraph lightening for the visualization. We used the particle image velocimetry (PIV) method to determine the interaction of the bubble with the surrounding liquid and solid surface. The main goal of the research is to use cavitation to sterilize bacteria and biofilm in impact of single bubble collapse on living cells.