Results 121 to 130 of about 1,137 (212)

Pressurized magma storage in radial dike network beneath Etna volcano evidenced with P-wave anisotropic imaging. [PDF]

open access: yesCommun Earth Environ
Del Piccolo G   +10 more
europepmc   +1 more source

T1‐weighting in Steady‐State FLASH MRI–Diffusion Is Not Only Supportive but Mandatory for the Contrast

open access: yesMagnetic Resonance in Medicine, Volume 96, Issue 4, Page 1789-1797, October 2026.
ABSTRACT Purpose FLASH imaging is widely assumed to produce a T1‐weighted steady‐state contrast using RF‐ and gradient‐spoiling. We observed substantial overestimation of CSF signals in simulations, when diffusion was neglected and realistic proton density was applied.
Simon Weinmüller   +7 more
wiley   +1 more source

A New Paradigm for Understanding the Rheology and Processability of Poly(p‐Phenylene Terephthalamide) Liquid‐Crystalline Solutions

open access: yesJournal of Applied Polymer Science, Volume 143, Issue 34, September 10, 2026.
Kevlar is traditionally modeled as a rigid‐rod polymer, yet rheological behavior deviates from this assumption. The review introduces a novel “twist‐tie” entanglement theory for aramid polymer chains in the nematic liquid crystal state, providing a molecular explanation for deviations from rigid‐rod models. Understanding twist‐tie entanglement dynamics
Emma Egli   +3 more
wiley   +1 more source

Microscale FFT‐based modeling of artificial porous microstructures and analysis of macroscopic models under varying loading scenarios

open access: yesGAMM-Mitteilungen, Volume 49, Issue 3, September 2026.
Abstract This article investigates the modeling of metallic isotropic porous materials by evaluating and comparing macroscopic and microstructure‐resolved simulation approaches. At the macroscopic level, different variants of the Deshpande‐Fleck (DF) model are implemented to describe the elastoplastic behavior of metallic porous materials.
Julian Dahler   +2 more
wiley   +1 more source

Dual‐view scout scans with deep learning for ultra‐low dose attenuation correction in PET

open access: yesMedical Physics, Volume 53, Issue 9, September 2026.
Abstract Background Accurate attenuation correction (AC) is essential for quantitative positron emission tomography (PET). Conventional CT‐based AC provides reliable attenuation (μ‐) maps but adds radiation, introduces PET/CT misalignment artifacts, and is unavailable on stand‐alone PET systems.
Florence M. Muller   +7 more
wiley   +1 more source

Ventilation Imaging of the Lung at 0.55T With Continuous Slice Cycling

open access: yesMagnetic Resonance in Medicine, Volume 96, Issue 3, Page 1235-1244, September 2026.
ABSTRACT Purpose To propose and evaluate a novel method for pulmonary ventilation imaging, offering considerably improved SNR. Methods A continuous slice cycling (CSC) acquisition scheme is proposed to exclusively capture signal modulations from respiratory motion with increased SNR.
Andrea Leuthard   +4 more
wiley   +1 more source

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