15x AMA Champion Ricky Carmichael and 9x AMA Champion Ryan Villopoto recap the week in Pro Motocross and Supercross. A Division of NBCUniversal. DISCLAIMER: This site and the products offered are for ...

WORD WAR: Chicago Mayor Brandon Johnson hasn’t shied away from talking about hiring diverse leaders to his team — even as the Trump administration has doubled down on why it’s launched a ...

Abstract: Integrated gate-commutated thyristors (IGCTs) are widely used in power electronics systems such as power converter and solid-state circuit breaker (SSCB). The higher operating temperature of ...