Iranian researchers have looked at how ultrasonic thermoelectric generators could be used to lower the operating temperature of solar modules. Their new system can generate cold steam via ultrasonic ...

Ultrasonic generators and ultrasonic shear instruments power these scalpels, and transducer handpieces are used to apply the ultrasound energy. Healthcare policies and reimbursements play a ...

THE increasing use of piezo-eleotric quartz for the stabilisation of radio frequencies has promoted many investigations of the vibration of the quartz. In the last few years a mass of information has ...