Results 51 to 60 of about 297,354 (275)
Coherent Plane-Wave Compounding Based on Normalized Autocorrelation Factor
IEEE Access, 2018 Coherent plane-wave compounding (CPWC) is an effective method to improve the image quality of ultrasound plane-wave imaging (PWI), which coherently sums the delay-and-sum (DAS) beamforming outputs of PWI at different steering angles.
Yadan Wang +3 more
doaj +1 more source
Imaging systems based on generalized lenses [PDF]
Компьютерная оптика, 2019 We consider the possibility of using generalized lenses in imaging optical systems. We propose using two generalized lenses in a system similar to a Fourier-correlator to obtain a point-to-point mapping, where the second lens is set so that a plane wave ...
Vadim Vasilev +2 more
doaj +1 more source
Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation
FEBS Letters, EarlyView.Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz +11 more
wiley +1 more source
Three-dimensional structure of Mach cones in monolayer complex plasma
, 2012 Structure of Mach cones in a crystalline complex plasma has been studied experimentally using an intensity sensitive imaging, which resolved particle motion in three dimensions.
Arnas, C. +6 more
core +4 more sources
FEBS Letters, EarlyView.Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas +3 more
wiley +1 more source
Virtual plane-wave imaging via Marchenko redatuming
, 2017 Marchenko redatuming is a novel scheme used to retrieve up- and down-going Green's functions in an unknown medium. Marchenko equations are based on reciprocity theorems and are derived on the assumption of the existence of so called focusing functions, i.
Meles, Giovanni Angelo +2 more
core +1 more source
High frame rate vector flow imaging of stenotic carotid bifurcation: computational modeling and analysis [PDF]
, 2011 Poster Session Session P1Aa. Beam Formation: Computational Aspects And Artifact Reduction: no. P1Ab-1Analysis of the complex blood flow pattern in the carotid bifurcation is clinically important to the diagnosis of carotid stenoses.
Chan, DLS, Yiu, BYS, Yu, ACH
core +1 more source
AAA+ protein unfoldases—the Moirai of the proteome
FEBS Letters, EarlyView.AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley +1 more source
Plane wave echo particle image velocimetry [PDF]
Proceedings of Meetings on Acoustics, 2013 This paper deals with the application of topological imaging to ultrasonic echo-particle image velocimetry (Echo-PIV). Echo-PIV is a recent alternative to optical PIV for measuring the instantaneous velocity field of a fluid flow previously seeded with small particles.
Samuel Rodriguez +2 more
openaire +1 more source
Pupil stabilization for SPHERE's extreme AO and high performance coronagraph system [PDF]
, 2007 We propose a new concept of pupil motion sensor for astronomical adaptive optics systems and present experimental results obtained during the first laboratory validation of this concept.
Beuzit, J. -L. +5 more
core +2 more sources