Results 41 to 50 of about 174,201 (277)
Nonlinear Ultrasonic Phased Array Imaging [PDF]
Physical Review Letters, 2014 This Letter reports a technique for the imaging of acoustic nonlinearity. By contrasting the energy of the diffuse field produced through the focusing of an ultrasonic array by delayed parallel element transmission with that produced by postprocessing of sequential transmission data, acoustic nonlinearity local to the focal point is measured. Spatially
Potter, J. N. +2 more
openaire +3 more sources
Theoretical study of Acousto-optical coherence tomography using random phase jumps on US and light [PDF]
, 2011 Acousto-Optical Coherence Tomography (AOCT) is variant of Acousto Optic Imaging (called also ultrasonic modulation imaging) that makes possible to get z resolution with acoustic and optic Continuous Wave (CW) beams.
A. C. Boccara +38 more
core +5 more sources
Ultrasonic Synthetic-Aperture Interface Imaging [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2019 Synthetic-aperture (SA) imaging is a popular method to visualize the reflectivity of an object from ultrasonic reflections. The method yields an image of the (volume) contrast in acoustic impedance with respect to the embedding. Typically, constant mass density is assumed in the underlying derivation. Due to the band-limited nature of the recorded data,
Joost van der Neut +6 more
openaire +4 more sources
International Journal of Distributed Sensor Networks, 2021 Ultrasonic computerized tomography is a promising technique for damage detection by enabling ultrasonic waves via multiple measurement paths leading to accurate localization of structural damage. Unlike traditional ultrasonic computerized tomography that
Binbin Li +5 more
doaj +1 more source
Thermographic non-destructive evaluation for natural fiber-reinforced composite laminates [PDF]
, 2018 Natural fibers, including mineral and plant fibers, are increasingly used for polymer composite materials due to their low environmental impact. In this paper, thermographic non-destructive inspection techniques were used to evaluate and characterize ...
Avdelidis, Nicolas P. +7 more
core +3 more sources
Molecules, 2023 There is an urgent need to realize precise clinical ultrasound with ultrasound contrast agents that provide high echo intensity and mechanical index tolerance.
Qiwei Cheng +6 more
doaj +1 more source
Experimental investigation of inter-element isolation in a medical array transducer at various manufacturing stages [PDF]
, 2016 This work presents the experimental investigation of vibration maps of a linear array transducer with 192 piezoelements by means of a laser Doppler vibrometer at various manufacturing finishing steps in air and in water.
Bini, Fabiano +2 more
core +1 more source
Survivin and Aurora Kinase A control cell fate decisions during mitosis
Molecular Oncology, EarlyView.Aurora A interacts with survivin during mitosis and regulates its centromeric role. Loss of Aurora A activity mislocalises survivin, the CPC and BubR1, leading to disruption of the spindle checkpoint and triggering premature mitotic exit, which we refer to as ‘mitotic slippage’.
Hana Abdelkabir +2 more
wiley +1 more source
Advances in Mechanical Engineering, 2018 Robot acceleration is the bottleneck for high-speed pick-and-place operations. In this article, the extreme acceleration at null velocity is proposed to characterize the acceleration capability for a planar parallel manipulator having a common actuated ...
Bin Liao, Yunjiang Lou, Zhibin Li
doaj +1 more source
Applied Sciences, 2018 The current paper reviews a set of principles and applications of photoacoustic and laser ultrasonic imaging, developed in the Laser Optoacoustic Laboratories of ILIT RAS, NUST MISiS, and ILC MSU.
Anton Bychkov +4 more
doaj +1 more source