Called MouthLab, the device uses mouthpiece and thumb pad sensors to quickly test a patient's blood pressure, breathing, blood oxygen, heart rate and heartbeat pattern. Called MouthLab, the device ...

While millions suffer under a virus that hits the respiratory system, Apple has launched a new watch that may be able to detect respiratory problems with an oxygen sensor. We tried out the new Series ...

A closed loop control system for regulation of engine air-fuel ratio at the stoichiometric value is required for effective operation of a three-way catalytic converter. System performance depends ...