Results 41 to 50 of about 2,627,966 (379)
Laser-driven high-power X- and gamma-ray ultra-short pulse source
, 2008 A novel ultra-bright high-intensity source of X-ray and gamma radiation is suggested. It is based on the double Doppler effect, where a relativistic flying mirror reflects a counter-propagating electromagnetic radiation causing its frequency ...
A. G. Zhidkov +7 more
core +2 more sources
Improvement of drying technology of plums by combination and ultra-high frequency methods
E3S Web of ConferencesThe article presents the developed innovative vacuum-sublimation drying installation and technology for drying fruits and vegetables. Technical instructions and technical and technological parameters have been developed.
O. Ergashev +3 more
semanticscholar +1 more source
Plastic and Reconstructive Surgery, Global Open, 2019 Background: Identification and localization of functional lymphatic vessels are important for lymphaticovenular anastomosis. Conventional high-frequency ultrasound (CHFUS) has been reported to be useful for them, but it has some disadvantages.
Akitatsu Hayashi +8 more
semanticscholar +1 more source
Refractivity variations and propagation at Ultra High Frequency
Results in Physics, 2017 Present framework is established to deal with the refractivity variations normally affected the radio waves propagation at different frequencies, ranges and different environments.
I. Alam +4 more
doaj +1 more source
Engineering Reports, 2021 A bendable ultra‐high frequency (UHF) radio‐frequency identification (RFID) tag antenna using nonuniform meandered lines for retail garments in the textile industry is presented.
Manoj Kumar +2 more
doaj +1 more source
Predictions of ultra-harmonic oscillations in coupled arrays of limit cycle oscillators
, 2006 Coupled distinct arrays of nonlinear oscillators have been shown to have a regime of high frequency, or ultra-harmonic, oscillations that are at multiples of the natural frequency of individual oscillators.
A. Pikovsky +4 more
core +1 more source
Mixed effect model for absolute log returns of ultra high frequency data [PDF]
, 2005 The influence of covariates on absolute log returns of ultra high frequency data is analysed. Therefore we construct a mixed effect model for the absolute log returns. The parameters are estimated in a state space approach.
Czado, Claudia, Haug, Stephan
core +3 more sources
Thin ultra high-frequency platform insensitive radio frequency identification tags [PDF]
IET Microwaves, Antennas & Propagation, 2010 Radio frequency identification (RFID) tags on thin substrates of less than 0.3% of a wavelength are presented. The tag antennas are formed of balanced lines wrapped around conducting rectangular patches and separated by a gap. The elements are above ground planes which lie entirely, or partially, beneath them.
Ziai, Mohamed A., Batchelor, John C.
openaire +1 more source
Gravitational Wave Detection with High Frequency Phonon Trapping Acoustic Cavities [PDF]
, 2014 There are a number of theoretical predictions for astrophysical and cosmological objects, which emit high frequency ($10^6-10^9$~Hz) Gravitation Waves (GW) or contribute somehow to the stochastic high frequency GW background.
Goryachev, Maxim, Tobar, Michael E.
core +1 more source
Partial Discharge Characteristics of C3F7CN Gas Mixture Using the UHF Method
Energies, 2022 Manufacturing or assembly defects in gas-insulated equipment can introduce field enhancements that could lead to partial discharge (PD). This paper examines the PD characteristics of SF6 alternatives considered for potential application to retro-filling ...
Loizos Loizou +7 more
doaj +1 more source