Results 41 to 50 of about 63,920 (326)
Frontiers in PhysicsThe interfacial pressure between cable accessories and cable insulation plays a decisive role in the insulation characteristics of the accessories and the long-term reliable operation of the cable.
Benhong Ouyang +13 more
doaj +1 more source
Two approaches for log-compression parameter estimation: Comparative study [PDF]
Serbian Journal of Electrical Engineering, 2009 Standard ultrasound devices perform nonlinear compression reducing dynamic range of the signal. In order to reconstruct original signal it is necessary to find out statistics of the signal before and signal after compression. There are two techniques for
Paskaš Milorad
doaj +1 more source
Mechanical performance separation of cardiac by nonlinear processing of Ultrasound B-mode images
Frontiers in Biomedical Technologies, 2022 Accurate measurement of Left Ventricular Ejection Fraction (LVEF (is essential for the diagnosis and prediction of LV arrhythmias. This study aims to estimate LVEF using nonlinear and statistical processing in echocardiography images.
Hamidreza Fazilatnezhad +2 more
doaj +1 more source
Resonances in Fock Space: Optimization of a SASER device
, 2000 We model the Fock space for the electronic resonant tunneling through a double barrier including the coherent effects of the electron-phonon interaction.
Anda +9 more
core +2 more sources
Design of an embedded microcomputer based mini quadrotor UAV [PDF]
, 2007 This paper describes the design and realization of a mini quadrotor UAV (Unmanned Aerial Vehicle) that has been initiated in the Systems and Control Laboratory at the Computer and Automation Research institute of the Hungarian Academy of Science in ...
Bauer, Péter +4 more
core +1 more source
Nonlinear response to ultrasound of encapsulated microbubbles [PDF]
Ultrasonics, 2012 The acoustic backscatter of encapsulated gas-filled microbubbles immersed in a weak compressible liquid and irradiated by ultrasound fields of moderate to high pressure amplitudes is investigated theoretically. The problem is formulated by considering, for the viscoelastic shell of finite thickness, an isotropic hyperelastic neo-Hookean model for the ...
openaire +3 more sources
Large Area Detection of Microstructural Defects with Multi-Mode Ultrasonic Signals
Applied Sciences, 2022 Cyclic loading or other stresses can lead to development of cracks and crack growth in mechanical structures, leading to eventual failure. While ultrasound imaging can be used for non-destructive testing of such structures, conventional ultrasound ...
Taeho Ju, Alp T. Findikoglu
doaj +1 more source
Effect of Pulse Shaping on Subharmonic Aided Pressure Estimation In Vitro and In Vivo. [PDF]
, 2016 OBJECTIVES: Subharmonic imaging (SHI) is a technique that uses the nonlinear oscillations of microbubbles when exposed to ultrasound at high pressures transmitting at the fundamental frequency ie, f METHODS: Eight waveforms with different envelopes were ...
Dave, Jaydev K. +11 more
core +2 more sources
, 2018 Ultrasound imaging makes use of backscattering of waves during their interaction with scatterers present in biological tissues. Simulation of synthetic ultrasound images is a challenging problem on account of inability to accurately model various factors
Sheet, Debdoot, Tom, Francis
core +1 more source
Microbubble Cavitation Imaging [PDF]
, 2013 Ultrasound cavitation of microbubble contrast agents has a potential for therapeutic applications such as sonothrombolysis (STL) in acute ischemic stroke.
Everbach, E. Carr +7 more
core +3 more sources