Results 81 to 90 of about 14,116,486 (379)
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
From Modeling to Sensing of Micro-Doppler in Radio Communications
Remote Sensing, 2022 The Doppler effect in radio systems has been widely explored by the radio communication community. However, these studies have been limited to simple motion such as linear translation.
Louis Morge-Rollet +4 more
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Radar High Resolution Range & Micro-Doppler Analysis of Human Motions [PDF]
, 2009 In radar imaging it is well known that relative motion or deformation of parts of illuminated objects induce additional features in the Doppler frequency spectra.
Ghaleb, A. +3 more
core
Optics Express, 2019 The optical rotational Doppler effect of light beams with angular momentum has recently found applications in the remote sensing of spinning objects. However, most of the reported experimental demonstrations rely on the particular condition of normal ...
Song Qiu +5 more
semanticscholar +1 more source
Theoretical analysis and experimental verification on optical rotational Doppler effect. [PDF]
Optics Express, 2016 We present a theoretical model to sufficiently investigate the optical rotational Doppler effect based on modal expansion method. We find that the frequency shift content is only determined by the surface of spinning object and the reduced Doppler shift ...
Hailong Zhou +4 more
semanticscholar +1 more source
Biodegradable Implantable Electronics with Wireless Technology for Real‐Time Clinical Applications
Advanced Healthcare Materials, EarlyView.The article explores how bioresorbable implantable electronics merge wireless communication and power delivery with biodegradable materials to enable real‐time clinical applications. It highlights advances in materials, system design, and medical uses across neural, cardiovascular, digestive, immune, and drug‐delivery systems.
Myeongki Cho +4 more
wiley +1 more source
Proposal for an Optical Test of the Einstein Equivalence Principle
, 2019 The Einstein Equivalence Principle (EEP) underpins all metric theories of gravity. Its key element is the local position invariance of non-gravitational experiments, which entails the gravitational red-shift.
Magnani, Piergiovanni +6 more
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Advances in Bioprinting to Model Immune‐Mediated Skin Diseases
Advanced Healthcare Materials, EarlyView.This review explores how 3D bioprinting drives innovation in developing in vitro skin models that mimic immune‐mediated diseases. It highlights current technologies, key applications in studying skin pathologies, and emerging challenges. The review points toward future opportunities for improving disease modeling and advancing therapeutic and cosmetic ...
Andrea Ulloa‐Fernández +4 more
wiley +1 more source
Advanced Healthcare Materials, EarlyView.This study presents guanidinium‐ and indole‐functionalized polyphosphoesters as degradable, non‐viral gene delivery vectors. Through precise tuning of charge density and hydrophobicity, these polymers form stable polyplexes with low toxicity. Remarkably, minor structural changes yield up to 200‐fold differences in transfection efficiency, highlighting ...
Markus Kötzsche +8 more
wiley +1 more source
, 2014 This presentation of 7 animations demonstrates the Doppler effect, which is used by astronomers to learn about the motions of stars, and to find planets. The principle is simple - in fact, even the animations consist only of expanding circles - but the effect is impressive. http://starguyspeaks.wordpress.com/2014/10/12/on-the-doppler-effect/
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