See how fast-food restaurants have changed over the years, from retro drive-thrus and giant meals to modern kiosks and ...

Objectives This study aimed to investigate the knowledge, attitudes and practices (KAP) of patients with urinary calculi in China, where prior KAP research on this condition is lacking. Design A cross ...

Celebrate Pi Day and read all about how this number pops up across math and science on our special Pi Day page. Grab something circular, like a cup, measure the distance around the circle, and divide ...

Divide any circle’s circumference by its diameter and you get pi. But what, exactly, are its digits? Measuring physical ...

Finding TM locations in Pokemon FireRed and LeafGreen takes you off the beaten path most of the time, but it's absolutely worth the trouble. These are often the only way for your Pokemon to learn ...

Abstract: An ultraminiaturized frequency selective surface (FSS) based on 2.5-D convoluted structure is proposed. 2-D convoluted lines in the form of square spirals are incorporated with vertical vias ...

Abstract: In this paper, a novel square-wave-type carrier signal injection method using zero-sequence voltage is proposed for sensorless control of permanent-magnet (PM) synchronous machine drives.