Results 21 to 30 of about 6,701 (112)

Thermal stability and nova cycles in permanent superhump systems

open access: yes, 2000
Archival data on permanent superhump systems are compiled to test the thermal stability of their accretion discs. We find that their discs are almost certainly thermally stable as expected.
Naylor, T., Retter, A.
core   +2 more sources

Geometry Analysis of Two Photon Polymerized Microneedles—An Experimental and Simulated Approach

open access: yesJournal of Applied Polymer Science, Volume 143, Issue 22, June 10, 2026.
This research investigates the mechanical stability of hollow, two‐photon‐polymerized microneedles for drug delivery. In an experimental setup, a steel stamp gradually compresses 1000 μm‐tall microneedles while recording their force–deformation response.
Cordelia F. Wittemann   +4 more
wiley   +1 more source

Upper bounds on wavepacket spreading for random Jacobi matrices

open access: yes, 2006
A method is presented for proving upper bounds on the moments of the position operator when the dynamics of quantum wavepackets is governed by a random (possibly correlated) Jacobi matrix.
A. Bovier   +23 more
core   +3 more sources

Gut Luminal Exosomes in Young and Old Mice: Multi‐Omic Characteristics and Regulation of Gut Permeability

open access: yesAging Cell, Volume 25, Issue 4, April 2026.
This graphical abstract shows that gut luminal exosomes (LFEs) change with aging, with old mice producing LFEs that disrupt gut barrier integrity, alter microbiome composition, and promote insulin resistance. In contrast, LFEs from young mice improve gut barrier function and metabolic health, and transferring these LFEs can partially reverse age ...
Abdelnaby Khalyfa   +3 more
wiley   +1 more source

Ninety‐Seven Percent of Trials Investigating Robotic Interventions in Physiotherapy Contained Abstract Spin: A Meta‐Research Review

open access: yesCochrane Evidence Synthesis and Methods, Volume 4, Issue 2, March 2026.
ABSTRACT Background Abstract spin involves misrepresenting or misreporting study findings in the abstract of an article. The abstract is the most easily accessible part of the article and may determine if an article is read, purchased or the findings are implemented into practice.
Hilary Tier   +9 more
wiley   +1 more source

Hidden lineages in the African Sky Islands: A taxonomic reevaluation of Afrocarduus (Compositae)

open access: yesJournal of Systematics and Evolution, Volume 64, Issue 2, Page 401-420, March 2026.
Species delimitation is crucial for biodiversity studies. Using Hyb‐Seq and phylogenomics, we reassessed Afrocarduus, endemic to Afromontane and Afroalpine regions, uncovering 16 evolutionary lineages (2.3 Mya). Morphological data support their distinctiveness, with acaulescence evolving independently twice. The traditionally broad A.
Lucía D. Moreyra   +9 more
wiley   +1 more source

Production cross-sections and momentum distributions of fragments from neutron-deficient 36Ar at 1.05 A.GeV

open access: yes, 2003
We have measured production cross sections and longitudinal momentum distributions of fragments from neutron-deficient 36Ar at 1.05 A.GeV. The production cross-sections show excellent agreement with the predictions of the semiempirical formula EPAX.
Benlliure, J.   +7 more
core   +1 more source

EEG Monitoring of Temporal Anticipation in Coincidence Anticipation Timing Tasks: A Scoping Review With Recommendations

open access: yesBrain and Behavior, Volume 15, Issue 12, December 2025.
This scoping review maps EEG studies of temporal anticipation in coincidence anticipation timing (CAT) tasks. Eleven studies were identified, revealing high methodological variability. We provide practical recommendations to standardize CAT task design and EEG procedures, aiming to improve reproducibility and support future research in this emerging ...
André Felipe dos Santos   +3 more
wiley   +1 more source

Origin of Faster Capacity Fade for Lower Electrolyte Amounts in Lithium Metal Batteries: Electrolyte “Dry‐Out”?

open access: yesAdvanced Energy and Sustainability Research, Volume 6, Issue 11, November 2025.
The cycle life of lithium metal batteries decreases with decreasing electrolyte amount. This study shows that the rising cell resistance is not driven by electrolyte dry‐accessible Li metal surface area, enhances local current densities, and facilitates high surface area and dead lithout, but by Li metal pore depletion, which shrinks the active area ...
Dominik Weintz   +7 more
wiley   +1 more source

Qubit-Qutrit Separability-Probability Ratios

open access: yes, 2004
Paralleling our recent computationally-intensive (quasi-Monte Carlo) work for the case N=4 (quant-ph/0308037), we undertake the task for N=6 of computing to high numerical accuracy, the formulas of Sommers and Zyczkowski (quant-ph/0304041) for the (N^2-1)
B. H. Bowditch   +16 more
core   +1 more source

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