Results 81 to 90 of about 27,544 (311)

Asymptotic behavior of non-autonomous stochastic Boussinesq lattice system

AIMS Mathematics
In this paper, we investigate the existence of a random uniform exponential attractor for the non-autonomous stochastic Boussinesq lattice equation with multiplicative white noise and quasi-periodic forces.
Ailing Ban
doaj   +1 more source

Characteristics of in-out intermittency in delay-coupled FitzHugh-Nagumo oscillators

, 2018
We analyze a pair of delay-coupled FitzHugh-Nagumo oscillators exhibiting in-out intermittency as a part of the generating mechanism of extreme events.
Feudel, Ulrike, Saha, Arindam
core   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source

Brane SUSY Breaking and Inflation: Implications for Scalar Fields and CMB Distorsion

, 2013
I elaborate on a link between the string--scale breaking of supersymmetry that occurs in a class of superstring models and the onset of inflation. The link rests on spatially flat cosmologies supported by a scalar field driven by an exponential potential.
Sagnotti, A.
core   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

Advanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida, Yanjie Wang, Thais A. Rodrigues, Paulo H. H. Nunes, Vagner R. de Mendonça, Paulo H. E. Falsetti, Leticia V. Savazi, Tao He, Alexandra V. Bardakova, Aida V. Rudakova, Jie Tian, Alexei V. Emeline, Osmando F. Lopes, Antonio Otavio T. Patrocínio, Jia Hong Pan, Caue Ribeiro, Detlef W. Bahnemann   +16 more
wiley   +1 more source

Cosmological Dynamics of a Dirac-Born-Infeld field

, 2010
We analyze the dynamics of a Dirac-Born-Infeld (DBI) field in a cosmological set-up which includes a perfect fluid. Introducing convenient dynamical variables, we show the evolution equations form an autonomous system when the potential and the brane ...
A. D. Linde, Edmund J. Copeland, Maryam Shaeri, Shuntaro Mizuno, Y. Gong   +4 more
core   +1 more source

Robust exponential attractors for singularly perturbed Hodgkin–Huxley equations

Journal of Differential Equations, 2009
A. L. Hedgkin and A. F. Huxley formulated the mathematical model describing the mechanism of the neural excitability. In this paper a singular perturbation of the associated dynamical system is considered: \[ \begin{aligned}\varepsilon u_{tt}+ (1+\varepsilon f_3(w))u_t- u_{xx}= -f_1(w)u+ f_2(w)+\varepsilon g(w,u)\quad &\text{in } Q,\\ w_t= -h_1(u)w ...
CAVATERRA C, GRASSELLI, MAURIZIO
openaire   +3 more sources

Copper Doping Enhances the Activity and Selectivity of Atomically Precise Ag44 Nanoclusters for Photocatalytic CO2 Reduction

Advanced Functional Materials, EarlyView.
By a simple anti‐Galvanic reaction, up to six copper atoms could be preferably doped into the Ag2(SR)5 staple motifs and Ag20 dodecahedral shell of an atomically precise Ag44(SR)30 nanocluster. When anatase TiO2 is used as substrate, the (AgCu)44/TiO2 photocatalyst exhibited much improved activity in photocatalytic CO2 reduction compared to Ag44/TiO2 ...
Ye Liu, Xi Zheng, Xiufan Liu, Tengyuan Gao, Nicola Pinna, Yu Wang   +5 more
wiley   +1 more source

Dynamical analysis for a scalar–tensor model with Gauss–Bonnet and non-minimal couplings

European Physical Journal C: Particles and Fields, 2017
We study the autonomous system for a scalar–tensor model of dark energy with Gauss–Bonnet and non-minimal couplings. The critical points describe important stable asymptotic scenarios including quintessence, phantom and de Sitter attractor solutions. Two
L. N. Granda, D. F. Jimenez
doaj   +1 more source

Incidence of nonextensive thermodynamics in temporal scaling at Feigenbaum points

, 2006
Recently, in Phys. Rev. Lett. 95, 140601 (2005), P. Grassberger addresses the interesting issue of the applicability of q-statistics to the renowned Feigenbaum attractor.
A. Robledo, Anania, Añaños, Baldovin, Baldovin, Baldovin, Baldovin, Beck, Borges, Buiatti, Casati, Coraddu, Coraddu, Costa, de Moura, Eckmann, Farmer, Fujisaka, Grassberger, Grassberger, Halsey, Hata, Hilborn, Horita, Latora, Latora, Lyra, Mayoral, Mayoral, Montangero, Mori, Paladin, Robledo, Robledo, Robledo, Robledo, Sano, Schuster, Tirnakli, Tonelli, Tsallis, Tsallis, Yang   +42 more
core   +1 more source