Results 131 to 140 of about 6,595 (243)

Experimental and Modeling Investigation of Seawater Hydrolysis Effects on Aramid Fiber Rupture Behavior

open access: yesJournal of Polymer Science, Volume 64, Issue 15, Page 3289-3309, 1 August 2026.
Hydrolytic aging in seawater produces markedly different mechanical responses among commercial Aramid fibers. While some fibers exhibit progressive degradation, others maintain stable or even improved tensile behavior. Experimental yarn‐scale testing combined with mathematical degradation modeling and Arrhenius‐based lifetime prediction provides new ...
Daniel Magalhães da Cruz   +6 more
wiley   +1 more source

Synthesis and Characterization of an Azido Nitrofurazanyl Ether: An Energy‐Rich Heterocyclic Plasticizer With a Low Glass Transition Temperature

open access: yesPropellants, Explosives, Pyrotechnics, Volume 51, Issue 8, Page 1365-1374, August 2026.
ABSTRACT We report on the synthesis and characterization of 3‐(2‐(2‐azidoethoxy)ethoxy)‐4‐nitro‐1,2,5‐oxadiazole (NFPEG2N3), which is a liquid nitrofurazanyl ether that was designed to be an energy‐rich plasticizer for glycidyl azide polymer (GAP)‐ and nitrocellulose (NC)‐based formulations.
P. Lieber   +3 more
wiley   +1 more source

A revised delimitation of Dorstenia and allied genera (Moraceae), supported by phylogenomics and morphology

open access: yesTAXON, Volume 75, Issue 4, August 2026.
Abstract Recent phylogenetic studies have called into question the present broad circumscription of Dorstenia (Moraceae), a genus of shrubs and herbs found largely in Africa and the Neotropics. This study presents an updated phylogenomic analysis of Dorstenia and allied genera, reviews the morphology of these taxa, and proposes a revised delimitation ...
Elliot M. Gardner   +3 more
wiley   +1 more source

Basins of Attraction and Escape in Pendulum‐Type Potentials with Quadratic Air Drag

open access: yesZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 106, Issue 8, August 2026.
ABSTRACT Quadratic air drag is a common dissipative mechanism at moderate to high velocities, yet in nonlinear one‐degree‐of‐freedom systems, it typically blocks closed‐form solutions and energy‐based phase‐plane partitions. We study the autonomous class ẍ+α(x)|ẋ|ẋ+β(x)sgn(ẋ)+V′(x)=0,$$\begin{equation*} \ddot{x}+\alpha (x)\,|\dot{x}|\,\dot{x}+\beta
Attila Genda   +2 more
wiley   +1 more source

Empirical Assessment of Storm‐Time Thermospheric Density Inversion Methods From LEO POD Data

open access: yesEarth and Space Science, Volume 13, Issue 8, August 2026.
Abstract Thermospheric mass density is one of the largest sources of operational uncertainty for spacecraft in low Earth orbit, particularly during geomagnetic storms. The growing population of Global Navigation Satellite System‐equipped satellites presents a data set of opportunity: precise orbit determination (POD) data streams can be used to ...
Charles Constant   +4 more
wiley   +1 more source

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