Abstract: Self-bearing machines offer a highly integrated solution to achieve the rotor drive and magnetic levitation within a single structure. Although the trend is toward a diminution in the number ...

Air raid alerts are poor substitutes for alarm clocks, but in Ukraine they often perform the same function. After being woken twice in one night by warnings of incoming Russian drones and quickly ...

Abstract: The thinning of sapphire wafers is a key process that affects the quality of optoelectronic devices. In the grinding process for sapphire, a hard and brittle material, the grade and surface ...

Work to start digging a new Hudson Tunnel is set to begin this spring as two tunnel boring machines custom-built for the project are on their way to New Jersey. The new rail tunnel, called the Gateway ...