Results 51 to 60 of about 121,274 (339)
Metasurface Doppler Cloak for Broadband Radar Stealth
Advanced Physics ResearchConcealing an aircraft is a multi‐faceted endeavor, notably involving radio and infrared frequencies. In a radar stealth context, it often translates to the reduction of the radar cross‐section (RCS).
Tanguy Lopez +3 more
doaj +1 more source
Broadband Laser Doppler Frequency Shift Emulator for Satellite Laser Communication
IEEE Photonics Journal, 2019 A novel emulator of laser Doppler frequency shift (DFS) for satellite laser communication based on microwave photonics technology is proposed and experimentally demonstrated.
Jinye Li +6 more
doaj +1 more source
Second-order Doppler frequency shifts of trapped ions in a linear Paul trap [PDF]
, 2022 S. N. Miao +7 more
openalex +1 more source
Advanced Functional Materials, EarlyView.xxxx. ABSTRACT Glioblastoma (GBM) remains one of the most lethal brain cancers, with median survival rarely exceeding 15 months after diagnosis. Interleukin‐12 (IL‐12) is a potent immunostimulatory cytokine capable of reshaping the tumor microenvironment (TME), yet its clinical translation is hindered by systemic toxicity and short half‐life. RNA‐based
Fatima Hameedat +11 more
wiley +1 more source
The Ray Theory of Doppler Frequency Shifts [PDF]
Australian Journal of Physics, 1968 A general expression is obtained according to ray theory for the Doppler frequency shift observed when both receiver and transmitter are in motion in a time-varying anisotropic but lossless medium. The result is obtained using Hamilton's optical method.
openaire +1 more source
Traffic control system and method [PDF]
, 1974 Frequency of carrier received by aircraft is measured and compared with reference to indicate magnitude of Doppler shift. One Doppler frequency range is selected and indicated by digital signal.
Allen, W. K. +2 more
core +1 more source
Light shifts in atomic Bragg diffraction [PDF]
, 2016 Bragg diffraction of an atomic wave packet in a retroreflective geometry with two counterpropagating optical lattices exhibits a light shift induced phase. We show that the temporal shape of the light pulse determines the behavior of this phase shift: In
Abend, Sven +4 more
core +3 more sources
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
Frequency Spectrum of Doppler-shifted Whistler-mode Signals [PDF]
Nature, 1965 To further our knowledge of very-low-frequency signals received via the whistler mode of propagation we have constructed a 25-channel spectrum analyser. Other work1,2 has shown the existence of apparent Doppler shifts on these signals of up to two or three parts in 105 of the carrier frequency; but the equipment used did not allow the variations of ...
R. A. MORRIS, N. POLETTI
openaire +1 more source
, 2001 We show that a correct formulation of the cold collision frequency shift for two photon spectroscopy of Bose-condensed and cold non-Bose-condensed hydrogen is consistent with experimental data.
A S Bradley +6 more
core +1 more source