Results 71 to 80 of about 2,452 (223)

CFD‐Based and Control‐Oriented Modeling of a Counterflow Heat Exchanger With Utilization of Parameter Identification

open access: yesProceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT Counterflow heat exchangers (CHXs) thermally couple consumers and producers to a district heating network (DHN). Fluctuating loads and control actions naturally lead to unsteady operation conditions of the network and its components, posing a challenge for DHN models and CHX parameterizations based on Nusselt correlations that assume steady ...
Marten Klein   +5 more
wiley   +1 more source

Reviewing the Levee Effect: From Theory to Practice

open access: yesJournal of Flood Risk Management, Volume 19, Issue 2, June 2026.
ABSTRACT Ongoing development in flood‐prone areas has intensified focus on flood‐risk management strategies. Constructed flood protections, like levees, lead to a false sense of security. Resulting development behind levees paradoxically increases flood risk, referred to as the levee effect.
Angela J. Catalano, Damon M. Hall
wiley   +1 more source

Hierarchical Strain‐Modified Medium‐Entropy Carbide Ceramics Exhibit Exceptional Ablation Resistance up to 2400°C

open access: yesAdvanced Science, Volume 13, Issue 19, 2 April 2026.
A novel strategy is developed by doping reduced graphene oxide (rGO) into a (HfZrTi)C medium‐entropy ceramic. This induces a hierarchical strain modification mechanism, synergistically inhibiting crack propagation at the microscale and dissipating stress at the mesoscale.
Junyi Xiao   +8 more
wiley   +1 more source

Seasonal Metacommunity Processes of Benthic Invertebrates in the Vjosa/Aoos River

open access: yesEcology and Evolution, Volume 16, Issue 4, April 2026.
The Vjosa River network harbors Europe's last free flowing metacommunity. Here, environmental and spatial constraints together with biotic interactions shape a dynamically changing metacommunity, but the importance of these ecological drivers changes over time and across space. We argue that understanding the complex and dynamic metacommunity processes
Jan Martini   +9 more
wiley   +1 more source

Application of High‐Order Direct Flux Reconstruction and Stiffness‐Resilient Time Integration to Simulations of Idealized Atmospheric Flows

open access: yesInternational Journal for Numerical Methods in Fluids, Volume 98, Issue 4, Page 448-468, April 2026.
The proposed work implements a direct flux reconstruction method for spatial discretization and a stiffness‐resilient exponential time integration method for temporal discretization on the cube‐sphere grid. A space‐time tensor formalism is employed to provide a general representation in any curvilinear coordinate system. This combination enables highly
Stéphane Gaudreault   +6 more
wiley   +1 more source

Transoral Robotic Surgery (TORS) for Head and Neck Cancer in the Elderly Population: Functional Outcomes, Survival, and Complications

open access: yesHead &Neck, Volume 48, Issue 4, Page 1016-1030, April 2026.
ABSTRACT Objective To compare functional and oncologic outcomes in elderly (≥ 70 years) and nonelderly (< 70 years) patients after transoral robotic surgery (TORS). Methods A retrospective chart review was conducted on 114 patients who underwent TORS for head and neck squamous cell carcinoma between 2012 and 2022.
Erim Pamuk   +6 more
wiley   +1 more source

Catalyst‐Free Mass Polymerization and Characterization of Bio‐Polyhydroxhyurethanes Based on Resorcinol Bis(Cyclocarbonate)

open access: yesMacromolecular Materials and Engineering, Volume 311, Issue 4, April 2026.
Non‐isocyanate polyhydroxyurethanes (PHUs) were synthesized from resorcinol bis(cyclocarbonate) and eco‐friendly diamines under mild, catalyst‐free conditions. The resulting polymers were extensively characterized for their structural, thermal, and mechanical properties, as well as processability and adhesion performance.
Federico Olivieri   +9 more
wiley   +1 more source

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