Abstract: Bearing faults occur frequently in wind turbines, thus resulting in an unplanned downtime and economic loss. Vibration signal collected from a failing bearing exhibits modulation phenomenon and “cyclostationarity.” In this ...

Abstract: The Yellow River basin is rich in sediment that provides a transport carrier for the transport and diffusion of pollutants. Molybdate ions contained in the tributaries of the Yellow River are dispersed with the water and ...