Two-dimensional transition-metal dichalcogenides (TMDs) possess interesting catalytic properties for the electrochemical-assisted hydrogen-evolution reaction (HER).We used niobium diselenide (NbSe2) as a representative TMD, and prepared single-layer NbSe2 porous nanosheets (PNS) by a double-sonication liquid-phase exfoliation, with H2O2 as a pore-f
The aim of this study was to determine both the occurrence and the genetic basis of resistance to erythromycin among 1 235 Staphylococcus spp.isolates obtained between 2000 and 2006 from (a) raw milk and meat (1 704 samples), (b) foodstuffs produced from these (451 samples), and (c) contact surfaces at processing plants and dairy farms (363 samples
This work presents a state feedback controller suitable to regulate the output voltage of DC-DC buck converters operating under input voltage disturbances and load variations.First, a state space model of the plant is given and the performance requirements are presented, in terms of bounds on rejection of disturbances, bounds on settling time of tr