Doppler ultrasound is a type of ultrasound that depends on the Doppler Effect, a change in the wave's frequency, which can occur from the motion of a reflector, such a red blood cell. We experience the Doppler Effect when, for example, an ambulance approaches us, passes and then drives away.
Definition of PLACODERM. : any of a class (Placodermi) of extinct chiefly Devonian fishes with an armor of bony plates and primitive jaw structures.ADVERTISEMENT. New Latin Placodermi, ultimately from GK plak-, plax + derma skin â more at derm-. any of a class (Placodermi) of extinct chiefly Devonian fishes with an armor of bony plates and primitive jaw structures. ADVERTISEMENT.
Report Abuse. Draconis Ordo means order of the dragon. To go back to its inception. It was a Christian orgnazation that was set up between high ranking officals and kings and statesmen of Eastern Europe to keep back the tide of the Turkish invaders.Had some really intresting leaders, Hungary's King, Poland, Moldavia, Translyvaina, Wachalla to name a few countries.t was a Christian orgnazation that was set up between high ranking officals and kings and statesmen of Eastern Europe to keep back the tide of the Turkish invaders. Had some really intresting leaders, Hungary's King, Poland, Moldavia, Translyvaina, Wachalla to name a few countries.