Results 71 to 80 of about 22,806,811 (229)

Quasilinear theory of collisionless Fermi acceleration in a multicusp magnetic confinement geometry

, 1999
Particle motion in a cylindrical multiple-cusp magnetic field configuration is shown to be highly (though not completely) chaotic, as expected by analogy with the Sinai billiard.
Ciubotariu, Carmen I., Dewar, Robert L.
core   +1 more source

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

On qualitative properties of a system containing a singular parabolic functional equation

Electronic Journal of Qualitative Theory of Differential Equations, 2008
We consider a system consisting of a quasilinear parabolic equation and a first order ordinary differential equation containing functional dependence on the unknown functions. The existence and some properties of solutions in $(0,\infty )$ will be proved.
László Simon
doaj   +1 more source

Multiple nonsymmetric nodal solutions for quasilinear Schrödinger system

Electronic Journal of Qualitative Theory of Differential Equations, 2022
In this paper, we consider the quasilinear Schrödinger system in $\mathbb R^{N}$ ($N\geq3$): \begin{equation*} \begin{cases} -\Delta u+ A(x)u-\frac{1}{2}\Delta(u^{2})u=\frac{2\alpha }{\alpha+\beta}|u|^{\alpha-2}u|v|^{\beta},\\ -\Delta v+ Bv-\frac{1}{2}\
Jianqing Chen, Qian Zhang
doaj   +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

Mixed regime in a quasi-linear system

Vietnam Journal of Mechanics, 2000
A quasi-linear system with cubic nonlinearity under two external excitations in sub harmonic responses of order 1/2 and 1/3 was examined. In the system under consideration there appears mixed oscillation due to the interaction between derived ...
Nguyen Van Dinh, Tran Kim Chi
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

A new critical curve for a class of quasilinear elliptic systems

, 2012
We study a class of systems of quasilinear differential inequalities associated to weakly coercive differential operators and power reaction terms. The main model cases are given by the $p$-Laplacian operator as well as the mean curvature operator in non
Bidaut-Véron, Bonfiglioli, Busca, Capogna, Caristi, Cîrstea, D’Ambrosio, D’Ambrosio, D’Ambrosio, D’Ambrosio, Farina, Farina, Filippucci, Folland, Folland, Lair, Lorenzo D’Ambrosio, Maly, Mitidieri, Mitidieri, Mitidieri, Mitidieri, Mitidieri, Phan, Polacik, Pucci, Serrin, Serrin, Souplet, Stein, Teramoto, Trudinger, Trudinger, Yang, Yarur   +34 more
core   +1 more source

DNA‐Iron Oxide Templated Multifunctional Nanocarbon Networks

Small Structures, Volume 7, Issue 1, January 2026.
Networks comprising carbon‐based nanomaterials and DNA‐covered magnetic nanoparticles are assembled and characterized, resulting in new multifunctional nanocomposites, fully dispersible in water. They integrate features from all components, exhibiting magnetism, high water‐dispersibility, fluorescence, and photoresponsive behavior upon illumination ...
Graziano Rilievo, Haosen Miao, Aura Cencini, Mary Bortoluzzi, Simone Molinari, Fabio Vianello, Massimiliano Magro, Matteo Palma, Alessandro Cecconello   +8 more
wiley   +1 more source

Existence of Nontrivial Solutions for a Critical Perturbed Quasilinear Elliptic System

Journal of Function Spaces, 2014
We consider a perturbed quasilinear elliptic system involving the p-Laplacian with critical growth terms in RN. Under proper conditions, we establish the existence of nontrivial solutions by using the variational methods.
Huixing Zhang, Xiangzhi Zhang
doaj   +1 more source