Results 141 to 150 of about 1,545,883 (293)
Decay of periodic entropy solutions to degenerate nonlinear parabolic equations
Under a precise nonlinearity-diffusivity condition we establish the decay of space-periodic entropy solutions of a multidimensional degenerate nonlinear parabolic equation.
Panov E.Y.
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The Canadian Journal of Chemical Engineering, EarlyView.A perturbative Graetz model describes coupled heat and mass transfer in reactive Couette–Poiseuille flow between parallel plates. Viscous dissipation and heat of reaction produce a small temperature rise, which enhances Arrhenius reaction rates and modestly accelerates axial species conversion in the small‐Brinkman‐number regime.
Leonardo Damián Soria Rodríguez +1 more
wiley +1 more source
Contributions to Plasma Physics, EarlyView.ABSTRACT At the Laser Plasma Physics laboratories of the University of Messina, an experimental platform for generating and accelerating low‐energy ions (keV) using pulsed lasers and for their potential applications has been put into operation. A Q‐switched Nd:YAG laser produces the beam for the system, operating at 1064 nm.
L. Torrisi, M. Cutroneo, A. Torrisi
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Deep Underground Science and Engineering, EarlyView.This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
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On some inverse problems for a degenerate parabolic equation with involution
Open MathematicsIn this paper, the solvability of some initial-boundary value problems is considered for a nonlocal analogue of the degenerate parabolic equation. The inverse problems are studied for the case where it is necessary to find not only a solution to the ...
Turmetov Batirkhan, Shalkhar Ainur
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Weighted weak formulation for a nonlinear degenerate parabolic equation arising in chemotaxis or porous media [PDF]
, 2015 This paper is devoted to the mathematical analysis of a degenerate nonlinear parabolic equation. This kind of equations stems either from the modeling of a compressible two phase flow in porous media or from the modeling of a chemotaxis-fluid process. In
Ibrahim, Moustafa, Saad, Mazen
core
Water Electrolysis Technologies for Extraterrestrial Water Resource Conversion
EcoEnergy, EarlyView.This paper reviews four water electrolysis technologies for extraterrestrial water conversion: alkaline water electrolysis, proton exchange membrane water electrolysis, solid oxide water electrolysis, and anion exchange membrane water electrolysis. It elaborates on their mechanisms, components, and integration, highlighting challenges such as water ...
Yawen Jiang +6 more
wiley +1 more source
Anatomy of a SPAN Particle: A Four‐Level Structural Framework for Lithium–Sulfur Batteries
EcoEnergy, EarlyView.Sulfurized polyacrylonitrile (SPAN) is a key cathode material for batteries. Borrowing the four‐level classification of protein structure, this perspective demonstrates SPAN's structural complexity into well‐defined levels, giving researchers clear research boundaries and targets at each level for improving battery performance.
Jinkwan Jung +5 more
wiley +1 more source
EcoEnergy, EarlyView.We report a 30 × 38 mm2 flexible thermoelectric device based on vertically aligned p/n Bi2Te3 thin films with high power factors of 31.0 and 20.3 μW cm−1 K−2. An optimized device geometry achieves a high normalized power density of 3.5 μW cm−2 K−2 through efficient thermal management, while maintaining excellent stability and modular scalability ...
Qingyi Liu +5 more
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A Cation‐Specific Strain Design Principle for Surface Segregation in Perovskite Oxides
EcoEnergy, EarlyView.La‐ and Sr‐based perovskites exhibit opposite strain‐dependent cation stability due to their distinct intrinsic stability optima. Strain engineering toward these cation‐specific optima suppresses surface segregation, providing a unified design principle for durable perovskite oxide electrodes.
Kyeounghak Kim +5 more
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