| http://www.w3.org/ns/prov#value | - In summary, however, from one of its broad aspects, the invention embraces a process for selectively dissolving solid and semi-solid materials, that comprises, producing preferably pulsed ultrasonic frequency energy; propagating such energy as a radiated acoustic wave from a predetermined, preferably highly localized, region; positioning the material-to-be-dissolved, of dimensions large compared w
|
