Results 61 to 70 of about 2,652,179 (149)
Dual mechanisms give rise to biphasic stomatal opening in onion
New Phytologist, EarlyView.Anisotropic guard cell wall stiffness enhances onion stomatal pore opening by increasing guard cell arc length. Summary Stomata are controllable micropores on the leaf surface that regulate gas exchange and water loss. Pore aperture adjustment is a mechanical process whereby changes in guard cell turgor drive changes in cell shape, resulting in ...
Melissa Tomkins +8 more
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Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.ABSTRACT This work presents a novel neural‐network compression approach for polyconvex envelopes of isotropic functions. The approach relies on a classical sufficient criterion for polyconvexity and is particularly suited for the representation of determinant‐constrained energy densities arising in non‐linear elasticity.
Timo Neumeier, Julian Salmon
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Derivation and numerical approximation of hyperbolic viscoelastic flow systems: Saint-Venant 2D equations for Maxwell fluids [PDF]
, 2017 We pursue here the development of models for complex (viscoelastic) fluids in shallow free-surface gravity flows which was initiated by [Bouchut-Boyaval, M3AS (23) 2013] for 1D (translation invariant) cases.
Boyaval, Sébastien
core +3 more sources
Modified Saint-Venant equations for flow simulation in tidal rivers
Water Science and Engineering, 2012 Flow in tidal rivers periodically propagates upstream or downstream under tidal influence. Hydrodynamic models based on the Saint-Venant equations (the SVN model) are extensively used to model tidal rivers.
Xiao-qin Zhang, Wei-min Bao
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Journal of Flood Risk Management, 2023 To seek other alternative approaches besides numerical methods, the linearized Saint Venant equations were utilized to derive the channel response functions for simulating streamflow.
Pin‐Chun Huang
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A Stable Formulation for Wave‐Induced Fracture in Peridynamics
Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.ABSTRACT The bond‐associated quadrature point formulation is a very accurate peridynamic formulation for elasticity, but modeling fracture by the traditional deletion of bonds can trigger severe numerical instabilities. These instabilities are most pronounced for wave‐induced fracture, where stress waves continue to propagate through already damaged ...
Kai Partmann +3 more
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International Journal for Numerical Methods in Engineering, Volume 127, Issue 20, 30 October 2026.ABSTRACT In geometrically nonlinear topology optimization, elements with low pseudo‐densities, subjected to compression from neighboring stiffer regions, can lead to complications, such as “inside‐out” elements in 2D structures or spurious local buckling in shells and plates.
Lidan Zhang, Fred van Keulen
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Advanced Electronic Materials, Volume 12, Issue 19, 12 October 2026.The impact of Cu microstructure on the thermomechanical residual stress of TSVs with a diameter of 3 μm$\umu{\rm m}$ is investigated by comparing Raman stress imaging and EBSD grain characterization. By correlating Raman‐imaged TSV stress with Cu grain structure, direct experimental evidence is provided to highlight the direct correlation between ...
Shuhang Lyu, Thomas Beechem, Tiwei Wei
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For a wave equation involving p-Laplacian term Phragmen-Lindelöf type estimates
Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2013 Behaviours of the solutions to initial-boundary value problems in terms of spatial or time variables are investigateted by the teories such as Phragmen-Lindölef Theorem and Saint-Venant Principle.
Emel Aydın, Yalçın Yılmaz
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An Informed Guide to Hydrodynamic Models Accounting for Large Wood and Logjams in Rivers
Earth Surface Processes and Landforms, Volume 51, Issue 10, October 2026.Large wood numerical modelling in rivers is used to investigate diverse aims, the most frequent being flood hazard and river restoration. The aim of models' application is correlated to the adoption of static or moving LW representation. LW modelling feasibility is affected by data availability, processes included within the model and model calibration.
Elisabetta Persi
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