Results 21 to 30 of about 23,791 (265)

Compton scatter tomography in annular domains

open access: yesInverse Problems, 2019
Abstract Compton scatter tomography (CST) is an imaging process which reconstructs the electric charge density in a two-dimensional slice of an object. We describe a recent CST modality, introduced in 2010, designed to image an object from the data formed by the integrals of its electric charge density on a two ...
T T Truong, M K Nguyen
openaire   +2 more sources

S-shaped connected component of radial positive solutions for a prescribed mean curvature problem in an annular domain

open access: yesOpen Mathematics, 2019
In this paper, we show the existence of an S-shaped connected component in the set of radial positive solutions of boundary value ...
Xu Man, Ma Ruyun
doaj   +1 more source

A Highly Efficient Plasmonic Lens Based on a Single Annular Ring With Cross Section of an Asymmetric Slot

open access: yesIEEE Photonics Journal, 2016
A simplified plasmonic lens composed of a single concentric annular ring with cross section of an asymmetric slot is proposed and investigated. By adding an auxiliary nanocavity under the primary annular slot, unidirectional plasmonic waves are ...
Yangwan Zhong   +6 more
doaj   +1 more source

Resilient Finite-Time Controller Design of a Class of Stochastic Nonlinear Systems

open access: yesAbstract and Applied Analysis, 2014
This paper deals with the problem of resilient finite-time control for a class of stochastic nonlinear systems. The notion of finite-time annular domain stability of stochastic nonlinear systems is first introduced.
Zhiguo Yan
doaj   +1 more source

Nonlinear elliptic problems in annular domains

open access: yesJournal of Differential Equations, 1987
This paper deals with positive radially symmetric solutions of \(\Delta u+f(u)=0\) in \(R_ ...
Bandle, C., Coffman, C.V., Marcus, M.
openaire   +2 more sources

The Existence and Uniqueness of Radial Solutions for Biharmonic Elliptic Equations in an Annulus

open access: yesAxioms
This paper concerns with the existence of radial solutions of the biharmonic elliptic equation ▵2u=f(|x|,u,|∇u|,▵u) in an annular domain Ω={x∈RN ...
Yongxiang Li, Yanyan Wang
doaj   +1 more source

Analytically Regularized Evaluation of the Coupling of Planar Concentric Conducting Rings

open access: yesApplied Sciences, 2022
In this paper, an accurate and efficient method for the analysis of coupled perfectly conducting annular rings is presented. The problem is first formulated as a couple of Integral Equation (IEs) in the Vector Hankel Transform (VHT) domain, considered as
Fulvio Schettino
doaj   +1 more source

Ferroelectric annular domains in hexagonal manganites

open access: yesPhysical Review B, 2013
Experimental observations and theoretical simulations for the ferroelectric (FE) domains in multiferroic RMnO3 (R=Ho-Lu, Y, and Sc) demonstrate that annular domains can appear in the topological Kosterlitz-Thouless (KT) phase in coexistence with the "cloverleaf" vortices.
J. Li   +7 more
openaire   +2 more sources

Finite-Time Annular Domain Stability and Stabilization of Regime-Switching Jump Diffusion System

open access: yesIEEE Access
In this paper, the finite-time annular domain stability and stabilization of regime-switching jump diffusion system are discussed. With the help of explicit solution of multi-dimensional regime-switching jump diffusion system, we give the sufficient and ...
Ran Ni, Gui-Hua Zhao
doaj   +1 more source

The C291R Tau Variant Forms Different Types of Protofibrils

open access: yesFrontiers in Molecular Neuroscience, 2020
Mutations in the MAPT gene can lead to disease-associated variants of tau. However, the pathological mechanisms behind these genetic tauopathies are poorly understood. Here, we characterized the aggregation stages and conformational changes of tau C291R,
Thomas K. Karikari   +4 more
doaj   +1 more source

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