Results 81 to 90 of about 9,764 (300)

Absorbing Boundary Condition as Limiting Case of Imaginary Potentials

open access: yes, 2019
Imaginary potentials such as $V(x)=-iv 1_\Omega(x)$ (with $v>0$ a constant, $\Omega$ a subset of 3-space, and $1_\Omega$ its characteristic function) have been used in quantum mechanics as models of a detector.
Tumulka, Roderich
core   +1 more source

BOUNDARY STABILIZATION OF THE LINEAR MGT EQUATION WITH PARTIALLY ABSORBING BOUNDARY DATA AND DEGENERATE VISCOELASTICITY

open access: yes, 2022
The Jordan–Moore–Gibson–Thompson (JMGT) equation is a well-established and recently widely studied model for nonlinear acoustics (NLA). It is a third–order (in time) semilinear Partial Differential Equation (PDE) with a distinctive feature of predicting ...
Bongarti, Marcelo   +3 more
core   +1 more source

2D Efficient Unconditionally Stable Meshless FDTD Algorithm

open access: yesInternational Journal of Antennas and Propagation, 2016
This paper presents an efficient weighted Laguerre polynomials based meshless finite-difference time domain (WLP-MFDTD). By decomposing the coefficients of the system matrix and adding a perturbation term, a factorization-splitting scheme is introduced ...
Kang Luo   +4 more
doaj   +1 more source

Domain Decomposition CN-FDTD Method for Analyzing Dispersive Metallic Gratings

open access: yesIEEE Photonics Journal, 2017
In this paper, an efficient domain decomposition (DD) technique is originally introduced into the unconditionally stable Crank–Nicolson finite-difference time-domain (CN-FDTD) method for analyzing the extraordinary optical transmission (EOT ...
Xiao-Kun Wei, Wei Shao, Haiyan Ou
doaj   +1 more source

Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae

open access: yesFEBS Open Bio, EarlyView.
Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj   +3 more
wiley   +1 more source

Finite Element Based Viscous Numerical Wave Flume

open access: yesAdvances in Mechanical Engineering, 2013
A two-dimensional numerical wave flume (NWF) for viscous fluid flows with free surface is developed in this work. It is based on the upwind finite element solutions of Navier-Stokes equations, CLEAR-volume of fluid method for free surface capture ...
Jianmin Qin, Bing Chen, Lin Lu
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Analysis of a third-order absorbing boundary condition for the Schrödinger equation discretized in space

open access: yes, 2004
In this paper, we consider the semidiscrete problem obtained when the Schrödinger equation is discretized in space with finite differences and a third-order absorbing boundary condition specific for this discretization, which has been developed recently ...
Reguera, N., N. Reguera
core   +1 more source

Hawking evaporation time scale of topological black holes in anti-de Sitter spacetime

open access: yesNuclear Physics B, 2016
It was recently pointed out that if an absorbing boundary condition is imposed at infinity, an asymptotically anti-de Sitter Schwarzschild black hole with a spherical horizon takes only a finite amount of time to evaporate away even if its initial mass ...
Yen Chin Ong
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

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