Results 131 to 140 of about 150,279 (290)

The Cognitive Costs of Sleep Deprivation in Ultra‐Endurance Cycling: Insights From the Race Across France

open access: yesJournal of Sleep Research, EarlyView.
ABSTRACT For athletes in endurance sports, who compete over several days and in unpredictable conditions, managing sleep–wake rhythms is critical to ensure optimal performance and minimise the risks to safety. Despite its growing popularity, the role of sleep management on ultracycling performance has received little attention.
Rémy Hurdiel   +4 more
wiley   +1 more source

The use of cyclic triaxial tests in the characterization of portuguese UGM [PDF]

open access: yes, 2008
Coarse aggregate is widely used in the unbound granular layers (UGM) of roads, in particular as granular sub-base and base. However, although various studies have been conducted on these materials, their mechanical behaviour still has not been properly ...
Luzia, Rosa   +2 more
core   +1 more source

Extended Kelvin–Voigt Model for Simulating Thermally Accelerated Creep in Fine‐Grained Soils

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, Volume 50, Issue 4, Page 1843-1854, March 2026.
ABSTRACT The subsurface undergoes temperature variations in many situations due to anthropogenic and natural causes, which strongly influence the long‐term behavior of soils. These phenomena can involve temperature anomalies in the ground across distances of a few meters, as in the case of nuclear waste repositories, to distances encompassing entire ...
Giulia Capati   +2 more
wiley   +1 more source

Energy evolution and damage analysis of true triaxial cyclic loading and unloading of sandstone at different rates

open access: yesMeitan xuebao
To investigate the effects of different rates on the energy and damage evolution of sandstone during true triaxial cyclic loading and unloading damage, the true triaxial compression test, true triaxial primary loading and unloading test, and true ...
Qihang ZHANG   +7 more
doaj   +1 more source

Efficacy of a low‐carbohydrate diet combined with exercise on glycemic control and metabolic health in type 2 diabetes mellitus: A systematic review and meta‐analysis

open access: yesDiabetes, Obesity and Metabolism, Volume 28, Issue 3, Page 1934-1946, March 2026.
Abstract Aims This study aims to evaluate the efficacy of a low‐carbohydrate diet with exercise (LCD + EX) compared to a non‐carbohydrate‐restricted diet with exercise (NRD + EX) on glycemic control and other clinically relevant metabolic health outcomes in adults with type 2 diabetes mellitus (T2DM).
Ye He   +4 more
wiley   +1 more source

Methodology for Multiaxial Fatigue Assessment of 2024‐T351 Aluminum Alloy Under Load Paths Representative of Aeronautical Structures

open access: yesFatigue &Fracture of Engineering Materials &Structures, Volume 49, Issue 3, Page 979-997, March 2026.
ABSTRACT Bolted assemblies are widely used in aerospace, automotive, and railway industries, where they experience complex multiaxial loadings. Understanding the multiaxial fatigue behavior of materials in such joints is essential for ensuring structural durability.
Maxime Nutte   +4 more
wiley   +1 more source

PRENOLIN project. Results of the validation phase at sendai site [PDF]

open access: yes, 2017
One of the objectives of the PRENOLIN project is the assessment of uncertainties associated with non-linear simulation of 1D site effects. An international benchmark is underway to test several numerical codes, including various non-linear soil ...
Amorosi, Angelo   +52 more
core  

The Effect of Graphene on the Fatigue Response and Failure Mechanism of Composite Materials: A Review

open access: yesFatigue &Fracture of Engineering Materials &Structures, Volume 49, Issue 3, Page 933-962, March 2026.
ABSTRACT This review investigates the influence of graphene on the fatigue performance of polymer‐based composites, focusing on both unreinforced matrices and fiber‐reinforced composite laminates. Graphene materials, including nanoplatelets, graphene oxide, and hybrid nanostructures, offer exceptional mechanical, electrical, and barrier properties that
João M. Parente   +3 more
wiley   +1 more source

Radiation Effects in Electret Organic Thin‐Film Transistors Due to High Flux and High Dose X‐Ray Irradiation

open access: yesAdvanced Materials, Volume 38, Issue 8, 6 February 2026.
Electret‐style organic thin‐film transistors are evaluated for synchrotron X‐ray dosimetry at ultra‐high dose rates, showing promising performance and agreement with standard detectors. XPS and NEXAFS reveal radiation‐induced oxidation and Fermi level shifts in pentacene and polystyrene, correlating with reduced charge carrier mobility and providing ...
Alexandria Mitchell   +12 more
wiley   +1 more source

Memory of Stress History in Single and Two Surface Plasticity for Granular Soils

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, Volume 50, Issue 2, Page 597-612, 10 February 2026.
ABSTRACT Recent studies have identified limitations in Manzari and Dafalias' 1997 and 2004 sand plasticity models, particularly regarding one‐way unloading/reloading and ratcheting loading modes. These models are widely accepted as bounding surface models in the geotechnical engineering community; thus, concerns have arisen about a fundamental lack of ...
Alexandros L. Petalas
wiley   +1 more source

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