Results 41 to 50 of about 678 (186)

A new existence result for some nonlocal problems involving Orlicz spaces and its applications

Boundary Value Problems, 2022
This paper studies some quasilinear elliptic nonlocal equations involving Orlicz–Sobolev spaces. On the one hand, a new sub-supersolution theorem is proved via the pseudomonotone operator theory; on the other hand, using the obtained theorem, we present ...
Xiaohui Qiu, Baoqiang Yan
doaj   +1 more source

Ion‐Scale Wave Emission and Absorption for Non‐Maxwellian Velocity Distributions in the Inner Heliosphere

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Hot and tenuous plasmas have velocity distribution functions (VDFs) significantly different from Maxwellian distributions. Characterizing how these differences impact wave damping and emission necessitates sophisticated methods for determining the associated dielectric plasma response.
K. G. Klein, D. Larson, R. Livi, M. M. Martinović, A. Rahmati, N. Shankarappa, M. Stevens, D. Verscharen, P. Whittlesey   +8 more
wiley   +1 more source

Unified Quasilinear Theory of Weakly Turbulent Plasmas [PDF]

The Physics of Fluids, 1968
A quasilinear theory is formulated which includes the microscopic fluctuation fields as well as the coherent waves. The study emphasizes those cases in which the propagating mode of the fluctuation field gives rise to a dominant contribution to the particle correlation.
openaire   +2 more sources

Dimer models and conformal structures

Communications on Pure and Applied Mathematics, Volume 79, Issue 2, Page 340-446, February 2026.
Abstract Dimer models have been the focus of intense research efforts over the last years. Our paper grew out of an effort to develop new methods to study minimizers or the asymptotic height functions of general dimer models and the geometry of their frozen boundaries.
Kari Astala, Erik Duse, István Prause, Xiao Zhong   +3 more
wiley   +1 more source

DFT Study of Support Effects for O2 Dissociation on Cu5 Clusters: Opposite Trends in N‐doped Graphene Compared to CeO2(111)

ChemCatChem, Volume 18, Issue 2, 28 January 2026.
Metal‐support interactions provide an opportunity to tune the catalytic performance of small metal clusters, as shown here for Cu5 clusters stabilized on N‐graphene and CeO2. DFT results confirm that Cu5 clusters on N‐graphene behave as in gas phase, with the most stable 2D morphology being more resistant to oxidation, while this structure‐activity ...
Estefanía Fernández, Joachim Paier, Mercedes Boronat, Joachim Sauer   +3 more
wiley   +1 more source

Quasilinear theory and modelling of gyrokinetic turbulent transport in tokamaks

Nuclear Fusion
The theory, development, and validation of reduced quasilinear models of gyrokinetic turbulent transport in the closed flux surface core of tokamaks is reviewed.
G. Staebler, C. Bourdelle, J. Citrin, R. Waltz   +3 more
doaj   +1 more source

Spectroscopic Investigations on Polyvinylidene Fluoride Nanofibers

Macromolecular Chemistry and Physics, Volume 227, Issue 1, 15 January 2026.
The fabrication of Polyvinylidene fluoride nanofibers from solution by force‐spinning is reported. Polymer mats were obtained at spinning rates ranging from 4000 to 10 000 rotations per minute. Raman and X‐ray data confirm the dominant α phase with a small admixture of β. The β‐phase content increases from 15% to over 70% as the spinning rate increases.
Parinaz Amaniabdolmalaki, Jui Vitthal Kharade, Alexandro Trevino, Lydia Morales, Karen Lozano, Victoria Padilla, Karen Martirosyan, Horacio Vasquez, Mircea Chipara   +8 more
wiley   +1 more source

Weighted function spaces of fractional derivatives for vector fields

Electronic Journal of Differential Equations, 2007
We introduce and study weighted function spaces for vector fields from the point of view of the regularity theory for quasilinear subelliptic PDEs.
Andras Domokos
doaj  

The structural response of network former mixing in barium borosilicate glasses: Part 1

Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.
This is a joint experimental and theoretical investigation of the structural response of the mixed network‐former effect along the barium diborate–disilicate join. Theory and spectroscopy, including NMR, Raman, and FTIR, reveal that the highest network connectivity corresponds to the highest atomic packing density. Abstract A glass series with constant
M. Brehl, B. J. A. Moulton, W. Xie, M. R. Cicconi, N. S. Tagiara, D. Möncke, A. Hajian, U. Deisinger, A. Roosen, U. Schmid, E. I. Kamitsos, J. Du, D. de Ligny   +12 more
wiley   +1 more source

Existence of mild solutions for quasilinear integrodifferential equations with impulsive conditions

Electronic Journal of Differential Equations, 2009
We prove the existence and uniqueness of mild solutions of quasilinear integrodifferential equations with nonlocal and impulsive conditions in Banach spaces. The results are obtained by using a fixed point technique and semigroup theory. Examples are
Krishnan Balachandran, Francis Paul Samuel   +1 more
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