Results 151 to 160 of about 560,130 (293)

Framework for X‐ray mirror surface shape fitting

open access: yesJournal of Synchrotron Radiation, EarlyView.
The closed‐form expressions for elliptic cylinders, hyperbolic cylinders, ellipsoids, hyperboloids, and diaboloids used for X‐ray mirror surface shapes are summarized. Additionally, a four‐layer framework to fit the measured surface shape data in slope or height for convenient X‐ray mirror surface characterization is proposed.For accurate ...
Lei Huang   +9 more
wiley   +1 more source

Demonstration of a family of X‐ray dark‐field retrieval approaches on a common set of samples

open access: yesJournal of Synchrotron Radiation, EarlyView.
This study aims to guide users of dark‐field imaging in selecting the most suitable technique for their imaging goals. To this end, we provide a summary table and highlight opportunities for future research into the sources of dark‐field contrast across emerging methods.There are various imaging setups capable of capturing dark‐field images, each with ...
Samantha J. Alloo   +5 more
wiley   +1 more source

Theoretical framework for soft X‐ray Fourier transform spectroscopy using the Wigner function

open access: yesJournal of Synchrotron Radiation, EarlyView.
A theoretical framework for the propagation of partially coherent Gaussian radiation in a modified Mach–Zehnder interferometer designed for Fourier transform spectroscopy applications is presented.This work presents a theoretical framework for the propagation of partially coherent Gaussian radiation in a modified Mach–Zehnder interferometer designed ...
Chuzida Chen   +6 more
wiley   +1 more source

Slow Transit Constipation: Pathophysiological Perspectives and Management Updates

open access: yesJournal of Digestive Diseases, EarlyView.
Slow transit constipation (STC) is a complex neuromuscular disorder driven by interstitial cells of Cajal (ICCs) loss and enteric neuropathy. Diagnosis relies on objective transit testing while excluding pelvic floor dysfunction. Management follows a stepwise, phenotype‐driven approach, progressing from conventional laxatives to emerging targeted ...
Athanasios Syllaios   +8 more
wiley   +1 more source

Space-time acoustic coding metasurfaces with scattering reduction characteristics

open access: yesiScience
Summary: In recent years, constructing space-time joint modulation acoustic metasurfaces with harmonic manipulation capabilities to achieve excellent scattering reduction within three-dimensional (3D) space has remained a significant challenge.
Sheng He   +5 more
doaj   +1 more source

Transcriptomic Remodeling of Pulmonary Vein Sleeves Suggests a Role in Atrial Arrhythmogenesis in Thoroughbred Horses

open access: yesAnnals of the New York Academy of Sciences, EarlyView.
Myocardial sleeves of the pulmonary veins in racehorses with paroxysmal atrial fibrillation exhibit upregulated pathways associated with tissue structure remodeling. Pathways related to the extracellular matrix and cellular components differ significantly from those in healthy horses.
Magdalena Arevalo‐Turrubiarte   +8 more
wiley   +1 more source

Adaptive blind image deblurring and denoising

open access: yesScandinavian Journal of Statistics, EarlyView.
Abstract Blind image deblurring aims to reconstruct the original image from its blurred version without knowing the blurring mechanism. This is a challenging ill‐posed problem because there are infinitely many possible solutions. The ill‐posedness is further exacerbated if the blurring mechanism depends on the pixel location.
Yicheng Kang   +2 more
wiley   +1 more source

Advances in cardiac devices and bioelectronics augmented with artificial intelligence

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Interfaces between the human heart, diagnostic bioelectronics, artificial intelligence, and clinical care. From left to right: Human heart and biosensor interface; representative waveforms of common diagnostic bioelectronic sensing modalities.
Charles Stark   +3 more
wiley   +1 more source

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