Results 71 to 80 of about 1,585 (264)

Unidirectional Evaporation‐Induced Tunable and Continuous Gradient Composite Structure for Absorption‐Dominant Electromagnetic Interference Shielding

open access: yesAdvanced Science, EarlyView.
A continuous conductivity gradient is formed in a porous MXene/melamine foam via directional evaporation, thereby improving impedance matching and enhancing electromagnetic attenuation. The resulting monolithic composite delivers absorption‐dominant EMI shielding with ultralow reflection, offering a simple route toward lightweight EMI shielding ...
Dawei Zhang   +6 more
wiley   +1 more source

Novel exact solutions for PDEs with mixed boundary conditions

open access: yesBoundary Value Problems
We develop methods for the solution of inhomogeneous Robin-type boundary value problems (BVPs) that arise for certain linear parabolic partial differential equations (PDEs) on a half-line, as well as a second-order generalization.
Mark Craddock   +2 more
doaj   +1 more source

Existence of extremal periodic solutions for quasilinear parabolic equations

open access: yesAbstract and Applied Analysis, 1997
In this paper we consider a quasilinear parabolic equation in a bounded domain under periodic Dirichlet boundary conditions. Our main goal is to prove the existence of extremal solutions among all solutions lying in a sector formed by appropriately ...
Siegfried Carl
doaj   +1 more source

Solutions to a phase-field model of sea ice growth

open access: yesBoundary Value Problems, 2019
We shall apply the phase-field method to investigate the dynamics of sea ice growth. The model consists of two parabolic equations. The existence and uniqueness of weak solutions to an initial-boundary value problem of this model is proved.
Yangxin Tang
doaj   +1 more source

Degenerate Abstract Parabolic Equations and Applications

open access: yes, 2015
Linear and nonlinear degenerate abstract parabolic equations with variable coefficients are studied. Here the equations and boundary conditions are degenerated on all boundary and contain some parameters. The linear problem is considered on the moving domain.
Shakhmurov, Veli.B., Sahmurova, Aida
openaire   +1 more source

Regularity analysis for an abstract system of coupled hyperbolic and parabolic equations

open access: yesJournal of Differential Equations, 2015
In this paper, we provide a complete regularity analysis for an abstract system of coupled hyperbolic and parabolic equations in a complex Hilbert space. We are able to decompose the unit square of the parameters into three parts where the semigroup associated with the system is analytic, of specific order Gevrey classes, and non-smoothing ...
Jianghao Hao   +2 more
openaire   +4 more sources

Electromagnetic Radiation Stimulated Learning in Perovskite Nickelates

open access: yesAdvanced Science, EarlyView.
ABSTRACT Biological plasticity refers to the ability of synapses to strengthen or weaken over time. These adaptive properties play a fundamental role in learning and memory, spanning many orders of magnitude in timescales. Short‐term plasticity (STP) arises from rapid correlative activity, while long‐term plasticity (LTP) is governed by slower ...
Ranjan Kumar Patel   +8 more
wiley   +1 more source

Famiglie s-involutive di campi vettoriali, orbite associate e distanze di controllo

open access: yesBruno Pini Mathematical Analysis Seminar, 2011
We provide intermediate properties for the domains of the fractional powers of an abstract multivalued linear operator A of weak parabolic type. In particular, the results exhibit the special role played by the linear subspace A0.
Angelo Favini
doaj  

Dynamic Evolution‐Controlled Parabolic‐Shaped Microstructures for Ultra‐Black Surface via Self‐Assembled Microsphere Mask Etching

open access: yesAdvanced Science, EarlyView.
A robust, substrate‐independent fabrication approach overcomes the spectral and geometric limitations of traditional stray‐light suppression. By combining ink spray‐coating with self‐assembled microsphere mask etching, this method produces parabolic‐shaped microstructures on diverse planar and curved engineering components.
Yiming Li   +5 more
wiley   +1 more source

Peano type theorem for abstract parabolic equations

open access: yesAnnales de l'Institut Henri Poincaré C, Analyse non linéaire, 2009
We consider parabolic problems with non-Lipschitz nonlinearity in the different scales of Banach spaces and prove local-in-time existence theorem.
openaire   +4 more sources

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