This prospective randomized controlled study with 975 nontunneled central venous catheters (CVCs) showed that the semiquantitative roll-plate culture technique (SQC) was as accurate as the sonication method for diagnosis of catheter-related infections. Sonication is difficult to standardize, whereas SQC is simpler, faster, and as reliable as the sonication method for culturing CVCs.

BACKGROUND Microalgal biomass contains a high level of carbohydrates which can be biochemically converted to biofuels using state-of-the-art strategies that are almost always needed to employ a robust pretreatment on the biomass for enhanced energy production. In this study, we used an ultrasonic pretreatment to convert microalgal biomass (Scenedesmus obliquus YSW15) into feasible feedstock for...

The object of research is the process convective and combined drying apple raw materials treated before dehydration in an ultrasonic bath. use pretreatment solves issue intensifying maintaining quality product. Sonication for 5 min reduces by 13.7 %, at 10 processing – 27.8 % compared to traditional drying. With increasing time 20 minutes, rate deteriorates. minutes under heating does not inten...