Results 81 to 90 of about 4,398,015 (289)

Existence of solutions to singular elliptic equations with convection terms via the Galerkin method

open access: yesElectronic Journal of Differential Equations, 2010
In this article, we use the Galerkin method to show the existence of solutions for the following elliptic equation with convection term $$ - Delta u= h(x,u)+lambda g(x, abla u) quad u(x)>0 quad ext{in } Omega, quad u=0 quad ext{on } partial Omega, $
Claudianor Oliveira Alves   +2 more
doaj  

Existence and Uniqueness Results for a Kirchhoff Double-Phase Problem Involving the ψ-Hilfer Derivative

open access: yesMathematics
This work develops an analytical framework for nonlinear fractional partial differential equations that combine Kirchhoff-type terms, double-phase operators, and ψ-Hilfer fractional derivatives.
Najla Mohammed Alghamdi
doaj   +1 more source

Magneto-Hydrodynamic Convection in Porous Media: the effect of Vadasz inertia term

open access: yes, 2017
Magnetohydrodynamics (MHD) concerns with a fluid which is immersed and moves in a magnetic field. Accounting for the Lorentz force rise up actions between the fluid and the magnetic field: the fluid velocity influences the magnetic field and viceversa.In
CAPONE, FLORINDA
core  

Recent Advances of Slip Sensors for Smart Robotics

open access: yesAdvanced Materials Technologies, EarlyView.
This review summarizes recent progress in robotic slip sensors across mechanical, electrical, thermal, optical, magnetic, and acoustic mechanisms, offering a comprehensive reference for the selection of slip sensors in robotic applications. In addition, current challenges and emerging trends are identified to advance the development of robust, adaptive,
Xingyu Zhang   +8 more
wiley   +1 more source

Effects of Magnetic Field and Nonlinear Temperature Profile on Marangoni Convection in Micropolar Fluid

open access: yesDifferential Equations and Nonlinear Mechanics, 2009
The combined effects of a uniform vertical magnetic field and a nonuniform basic temperature profile on the onset of steady Marangoni convection in a horizontal layer of micropolar fluid are studied.
M. N. Mahmud, R. Idris, I. Hashim
doaj   +1 more source

On the stability of the equation with a partial boundary value condition

open access: yesBoundary Value Problems, 2018
The degenerate parabolic equation with a convection term is considered. Let Ω be a bounded domain with C2 $C^{2}$ smooth boundary and d(x)=dist(x,∂Ω) $d(x)=\operatorname{dist}(x, \partial\Omega)$ be the distance function from the boundary.
Huashui Zhan
doaj   +1 more source

THE ROLE OF MACROSCOPIC TURBULENT DIAMAGNETISM IN ENSURING LONG-TERM STABILITY OF SUNSPOTS

open access: yesOdessa Astronomical Publications, 2020
We investigated the role of macroscopic turbulent diamagnetism in ensuring the long-term stability of the equilibrium state of the sunspots. The physical meaning of macroscopic diamagnetism of turbulent plasma is expulsion of a large-scale magnetic field
V. N. Krivodubskij
doaj   +1 more source

Ultra‐White Elastomeric Coatings for Daytime Radiative Cooling

open access: yesAdvanced Materials Technologies, EarlyView.
Passive daytime radiative cooling meets elasticity in a new class of ultra‐white silicone coatings. Combining high solar reflectance with strong sky‐window emission, they hold surfaces below ambient temperature under full sunlight while remaining flexible and stretchable. This combination of cooling performance and mechanical flexibility enables energy‐
Abdulrahman Aljwirah   +5 more
wiley   +1 more source

Nonlinear Robin problems with unilateral constraints and dependence on the gradient

open access: yesElectronic Journal of Differential Equations, 2018
We consider a nonlinear Robin problem driven by the p-Laplacian, with unilateral constraints and a reaction term depending also on the gradient (convection term). Using a topological approach based on fixed point theory (the Leray-Schauder alternative
Nikolaos S. Papageorgiou   +2 more
doaj  

The effects of Vadasz term, anisotropy and rotation on bi-disperse convection

open access: yes, 2021
The onset of thermal convection in a uniformly rotating and horizontally isotropic bi-disperse porous medium, taking into account the Vadasz term, is investigated.
Capone F., Massa G., F. Capone, G. Massa
core   +1 more source

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