Results 91 to 100 of about 158,434 (296)
What is Doppler ultrasound? [PDF]
, 2011 The term Doppler should be capitalized because it refers to Christian Johann Doppler, an Austrian physicist (1803–1853). He described a phenomenon whereby the frequency of sound changes when it is reflected off a moving object.
Vassallo, Pierre
core
Advanced Science, EarlyView.This research identified cardiac amyloid pathology, neurotrophic factor depletion, and reduced myocardial nerve function in a transgenic model of cerebral amyloidosis (Tg2576), Aβ‐challenged cardiomyocytes, and in human AD heart tissue. These findings carry significant diagnostic and therapeutic implications, emphasizing the role of neuro‐signaling ...
Andrea Elia +6 more
wiley +1 more source
Doppler frequency analysis for sound-field sampling with moving microphones
Frontiers in Signal ProcessingMoving microphones allow for the fast acquisition of sound-field data that encode acoustic impulse responses in time-invariant environments. Corresponding decoding algorithms use the knowledge of instantaneous microphone positions for relating the ...
Fabrice Katzberg +3 more
doaj +1 more source
Journal of the Practice of Cardiovascular Sciences, 2019 CA Doppler described the doppler effect which was a shift in the frequency of light. This theory was later used for multiple applications in electromagnetics, astronomy, physics, aviation and health sciences.
Shivani Vashistha, Soumi Das
doaj +1 more source
Doppler Shift Tolerance of Typical Pseudorandom Binary Sequences in PMCW Radar. [PDF]
Sensors (Basel), 2022 Giroto de Oliveira L +9 more
europepmc +1 more source
Bioabsorbable Endovascular Adhesive Tape (BEAT) for Improving Vascular Regeneration
Advanced Science, EarlyView.A bioabsorbable endovascular adhesive tape (BEAT) platform based on a hierarchical polyelectrolyte complex is developed to enhance drug delivery in the DCB system. The coating enables rapid transfer to the vessel, provides short‐term mechanical support, and promotes both immediate transfer and long‐term retention of drugs at the lesion site.
Jiarong Wang +13 more
wiley +1 more source
Journal of Marine Science and EngineeringWhen an airborne sound source is in rapid motion, the acoustic signal detected by the underwater sensor experiences a substantial Doppler shift. This shift is intricately linked to the motion parameters of the sound source.
Junjie Mao +6 more
doaj +1 more source
Doppler shift compensation performance in <i>Hipposideros pratti</i> across experimental paradigms. [PDF]
Front Syst Neurosci, 2022 Luo J, Lu M, Wang X, Wang H, Moss CF.
europepmc +1 more source
Resolving Spacecraft Earth-Flyby Anomalies with Measured Light Speed Anisotropy [PDF]
, 2008 Doppler shift observations of spacecraft, such as Galileo, NEAR, Cassini, Rosetta and MESSENGER in earth flybys, have all revealed unexplained speed `anomalies' - that the doppler-shift determined speeds are inconsistent with expected speeds.
Cahill, Reginald T.
core +3 more sources
A Soft Robotic Model for Simulating Heart Valve Disease and Cardiac Interventions
Advanced Science, EarlyView.This paper introduces a fully synthetic fabrication methodology for a soft robotic, in‐vitro model of the left‐heart, complete with a functioning mitral valve apparatus. With a view towards patient‐specific modeling, we demonstrate physiological flow and pressure waveforms, tunable mitral valve function with clinical imaging compatibility, and its use ...
James Davies +14 more
wiley +1 more source