Results 31 to 40 of about 5,516 (216)

Employing a Mixture of Rayleigh and Inverse Gaussian Distributions as SAR Clutter Texture Model in MAP Estimation for Efficient Speckle Suppression

open access: yesIEEE Access
This article proposes a speckle suppression technique based on a binary mixture of the Rayleigh and the reciprocal of Gaussian (RIG) distributions. This model suitably characterizes the texture of synthetic aperture radar (SAR) return from regions with ...
Dheeren Ku Mahapatra   +3 more
doaj   +1 more source

High-sensitive troponin T increase after hemodialysis is associated with left ventricular global longitudinal strain and ultrafiltration rate

open access: yesCardiology Journal, 2020
BACKGROUND: Circulating troponin levels are both stable and higher in patients with end-stage renal disease, even in the absence of acute coronary syndrome. These patients commonly have underlying cardiac problems that frequently cause troponin elevation.
Serkan Ünlü   +8 more
doaj   +1 more source

Interferometric Quantification of the Impact of Relative Humidity Variations on Cultural Heritage

open access: yesHeritage, 2022
It has been shown that Relative Humidity (RH) provokes dimensional displacement detectable directly from surfaces using holographic interferometry.
Vivi Tornari
doaj   +1 more source

Spatially adaptive polarimetric image despeckling using bandelet transform

open access: yesEuropean Journal of Remote Sensing, 2020
Polarimetric Synthetic Aperture Radar (PolSAR) imaging extended SAR applications by exploring the polarimetric properties of the target scatterers. Similar to SAR images, PolSAR images are prone to multiplicative speckle noise due to its coherent imaging
Roy Thankachan   +2 more
doaj   +1 more source

Dynamic Speckle Holography

open access: yesPhysical Review Letters, 2021
We introduce dynamic speckle holography, a new technique that combines imaging and scattering to measure three-dimensional maps of displacements as small as ten nanometers over several centimeters, greatly extending the capabilities of traditional imaging systems.
S. Aime   +3 more
openaire   +3 more sources

Superpixel cosegmentation algorithm for synthetic aperture radar image change detection

open access: yesThe Journal of Engineering, 2019
Image segmentation has gained increasing popularity and has been widely applied in various image processing tasks recently. A simple linear iterative clustering (SLIC) superpixel generating algorithm for optical images based on k-means clustering ...
Ningyuan Shao   +5 more
doaj   +1 more source

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Methods for Determination of Mean Speckle Size in Simulated Speckle Pattern

open access: yesMeasurement Science Review, 2014
This paper deals with computation of mean speckle size in a speckle pattern generated through a numerical simulation of speckle after reflection of a Gaussian beam off a rough object’s surface. Within this simulation various speckle patterns are obtained
Hamarová I.   +3 more
doaj   +1 more source

The very compact and efficient speckle suppression device for laser picoprojector

open access: yesSemiconductor Physics, Quantum Electronics & Optoelectronics, 2019
The original, simple and efficient speckle suppression method has been proposed for laser picoprojector. The method uses simple 1D DOE structure on flexible film roll up in loop for speckle suppression.
I.V. Gorbov
doaj   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

open access: yesFEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

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