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Doppler measurement

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См. также в других словарях:

  • Doppler echocardiography — Intervention Mitral valve MeSH …   Wikipedia

  • Doppler effect — Change of wavelength caused by motion of the source. An animation illustrating how the Doppler effect causes a car engine or siren to soun …   Wikipedia

  • Doppler spectroscopy — Diagram showing how a smaller object (such as an extrasolar planet) orbiting a larger object (such as a star) could produce changes in position and velocity of the latter as they orbit their common center of mass (red cross). Doppler spectroscopy …   Wikipedia

  • Doppler error — In using Doppler radar, the error in the measurement of target radial velocities as a result of atmospheric refraction. These errors result, first, from the assumption of a constant wave velocity for a nonhomogeneous atmosphere and, second, the… …   Aviation dictionary

  • Laser-Doppler-Anemometrie — 2D Laser Doppler Anemometer an einem Strömungskanal. Zwei Strahlpaare leicht unterschiedlicher Wellenlänge dienen der Messung der Längs bzw. vertikalen Komponente der Strömungsgeschwindigkeit am Ort des Schnittpunkts. Das Objektiv ist mit dem… …   Deutsch Wikipedia

  • Laser-Doppler-Anemometer — Die Laser Doppler Anemometrie (LDA) ist ein berührungsloses optisches Messverfahren zur Bestimmung von Geschwindigkeitskomponenten in Fluidströmungen (Flüssigkeiten und Gase). Hierbei wird ein Laserstrahl mit Hilfe eines Strahlteilers in zwei… …   Deutsch Wikipedia

  • laser-Doppler velocimetry — measurement of the flow of red cells in a microcirculatory bed by means of laser light delivered to and detected from the region of interest by fiberoptic probes …   Medical dictionary

  • Flow measurement — is the quantification of bulk fluid movement. Flow can be measured in a variety of ways. Positive displacement flow meters acumulate a fixed volume of fluid and then count the number of times the volume is filled to measure flow. Other flow… …   Wikipedia

  • Non-invasive intracranial pressure measurement methods — Increased intracranial pressure (ICP) is one of the major causes of secondary brain ischemia that accompanies a variety of pathological conditions, most notably, traumatic brain injury (TBI), stroke, and intracranial hemorrhages. However, aside… …   Wikipedia

  • Transcranial doppler — (TCD) is a test that measures the velocity of blood flow through the brain s blood vessels. Used to help in the diagnosis of emboli, stenosis, vasospasm from a subarachnoid hemorrhage (bleeding from a ruptured aneurysm), and other problems, this… …   Wikipedia

  • Planar Doppler velocimetry — (PDV), also referred to as Doppler Global Velocimetry (DGV), determines flow velocity across a plane by measuring the Doppler shift in frequency of light scattered by particles contained in the flow. The Doppler shift, Δfd, is related to the… …   Wikipedia

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