I tested an AirDoctor air purifier for over six months to find out if it's worth the splurge.

Duct Pro Systems is a manufacturer of professional equipment solutions for the air duct cleaning industry. The company designs and builds durable, high-performance systems that support contractors in ...

Abstract: Large low-speed drives are designed with a high number of pole pairs, annular and magnetically saturated at rated operation. Large bore diameters tend to unwanted deformations of circular ...

Abstract: In the realm of advanced mobile communications, the integration of space, air, and ground networks, referred to as space-air-ground integrated network (SAGIN), is expected to be an essential ...