Schwalbe reinvents the valve and it's better than Presta, but is that enough to convince everyone to make the switch?

Fresh Air from WHYY, the Peabody Award-winning weekday magazine of contemporary arts and issues, is one of public radio's most popular programs. Hosted by Terry Gross and Tonya Mosley, the show ...

About Delta Air Lines Inc. Delta Air Lines, Inc. engages in the provision of scheduled air transportation for passengers and cargo. It operates through the Airline and Refinery segments. The Airline ...

Thompson has the words "yes" and "no" tattooed on opposite arms. "I'm constantly wrestling with ... my cynicism and my optimism," she says. In addition to Hedda, she stars in the series His & Hers.

Abstract: The paper presents a mathematical model of a piston compressor which is a part of an oxygen gas generator. Taking into account the structural parameters of the compressor, as well as the ...

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Heart valves keep blood flowing in the right direction between the heart's four chambers. Mechanical valves last longer than bioprosthetic valves but require lifelong blood thinners. Most of the time, ...