Abstract: We have proposed a method to focus an ultrasonic beam transmitted from piezoelectric micromachined ultrasonic transducer (pMUT) array based on the principle of phase-type Fresnel Zone Plate ...
SEOUL, Dec 26 (Reuters) - North Korean leader Kim Jong Un signaled the country will continue to develop missiles in the next five years, as he visited major munitions enterprises in the last quarter ...
Shell PLC discovered oil in the Norphlet formation near Appomattox in the Gulf of Mexico, said INEOS Energy in a Dec. 22 release. The Nashville exploration well was drilled more than 5 miles beneath ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback