Results 131 to 140 of about 307,407 (286)
The cauchy problem of a degenerate parabolic equation
Monatshefte f�r Mathematik, 1977 This note is concerned with the existence of a weak solution for a degenerate Cauchy problem of parabolic type in then-dimensional spaceRn. The degenerate property is in the sense that the matrix (aij(t,x)) involved in the differential operator is not necessarily positive definite.
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Correlation of Band Bending and Ionic Losses in 1.68 eV Wide Band Gap Perovskite Solar Cells
Advanced Energy Materials, EarlyView.Piperazinium salt treatments with different anions (chloride, iodide, tosylate, and bistriflimide) influence the energetics, carrier dynamics and long‐term stability of 1.68 eV perovskite solar cells. Chloride treatments achieve the highest efficiency (21.5%) but suffer from fast degradation due to ionic losses.
Florian Scheler +28 more
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Influence of geometrical manufacturing tolerances on lithium‐ion battery performance
International Journal of Energy Research, Volume 46, Issue 15, Page 23824-23838, December 2022., 2022 The influence of electrode coating thickness, calendaring and electrode cutting tolerance on lithium‐ion battery capacity, energy, resistance and voltage relaxation is investigated through a numerical model. Electrode cutting tolerance has the largest affect upon cell performance characteristics, with calendaring tolerance predominantly affecting the ...
Russell Broad, Ashley Fly
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The classes Bm,1 and Hölder continuity for doubly degenerate parabolic equations [PDF]
, 1995 А. В. Иванов
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Tailoring the Electron and Phonon Transport in Metavalently Bonded GeTe by Stepwise Doping
Advanced Energy Materials, EarlyView.This work demonstrates that the intrinsic physical properties of a material can provide more fundamental guidance for optimizing thermoelectric performance. A stepwise doping strategy is proposed to sequentially improve the intrinsic physical properties of GeTe, ultimately leading to a high ZT of 2.2 at 773 K through doping with Cd, Cu, and Pb ...
Ming Liu +15 more
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Photocatalytic and Electrochemical Synthesis of Biofuel via Efficient Valorization of Biomass
Advanced Energy Materials, EarlyView.This review highlights biomass and biofuel traits, exploring photocatalysis and electrocatalysis mechanisms and their synergistic technologies in biofuel production. It analyzes environmental and economic impacts of green catalytic processes, assesses current challenges, and outlines future research directions, condensing complex topics into a focused ...
Dalin Sun +9 more
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International Journal for Numerical Methods in Fluids, Volume 95, Issue 1, Page 107-142, January 2023., 2023 In this article, a novel mass and momentum conservative semi‐implicit finite volume scheme is developed for the coupled solution of hydrostatic shallow water flow and the movement of one or more floating rigid bodies. The coupling is achieved via a nonlinear volume function in the mass conservation equation that depends on the coordinates of the ...
Cristian Brutto, Michael Dumbser
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Swarm‐Optimized ZnO/CdS/CIGS/GaAs Solar Cell for Enhanced Efficiency and Thermal Resilience
Advanced Energy and Sustainability Research, EarlyView.This article addresses the problem of optimizing the efficiency and thermal resilience of ZnO/CdS/CIGS solar cells, which are promising but still face challenges in maximizing performance under high‐temperature conditions and concentrated sunlight. The main issue is enhancing the efficiency of these cells while also ensuring that they can withstand the
Habib Ullah Manzoor +4 more
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International Journal for Numerical Methods in Fluids, Volume 95, Issue 1, Page 143-175, January 2023., 2023 We present a new strong‐form meshless solver combined with the boundary condition‐enforced immersed boundary method for the numerical solution of the nonstationary, incompressible, viscous Navier–Stokes equations in their stream function‐vorticity (in 2D) and vector potential‐vorticity (in 3D) formulation.
George C. Bourantas +6 more
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Controllability of nonlinear degenerate parabolic cascade systems
Electronic Journal of Differential Equations, 2016 This article studies of null controllability property of nonlinear coupled one dimensional degenerate parabolic equations. These equations form a cascade system, that is, the solution of the first equation acts as a control in the second equation and
Mamadou Birba, Oumar Traore
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