Virginia State Police are investigating after a Richmond man was hit and killed by a tow truck on Interstate 95 on Christmas night.

Abstract: Traditional axial-flow pump angle adjustment is achieved by rotating the rigid blades of the impeller to change the blade angle as a whole, thereby regulating the pump’s operating conditions ...

Abstract: Global warming has significantly increased the frequency of forest fires. Unmanned aerial vehicles (UAVs) provide rapid response and real-time monitoring, offering unique advantages over ...