This paper proposes an innovative pneumatic pressure-controlled active pantograph, tested through Hardware-in-the-Loop (HIL) experiments. The proposed easy-to-implement active pantograph is achieved ...

Summer vacation is a time for fun and play, but can also be a time for learning. Parents have the added benefit of teaching ...

The responsivity of an ultrasonic transducer is an important parameter in evaluating its effective frequency band, the electroacoustic conversion efficiency, and the measurement capability of the ...

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In comparison to traditional longwall mining, “roof-cutting and pressure-releasing” mining along gob-side entry retaining changes the permeability of the gob, as well as the pressure-relief ...

Foreign-Trade Zone (FTZ) 40, Notification of Proposed Production Activity; Air Venturi, Ltd.; Air Guns and Pressure Tanks; Solon, Ohio ...