Results 21 to 30 of about 144,163 (329)
Scattering of ECRF waves by edge density blobs and fluctuations in tokamak plasmas
EPJ Web of Conferences, 2012 There are two basic approaches to studying the effects of density blobs and edge fluctuations on the coupling of electron cyclotron (EC) radio frequency waves to the core of tokamak plasmas.
Kominis Yannis +2 more
doaj +1 more source
Supercritical geometric optics for nonlinear Schrodinger equations [PDF]
, 2007 We consider the small time semi-classical limit for nonlinear Schrodinger equations with defocusing, smooth, nonlinearity. For a super-cubic nonlinearity, the limiting system is not directly hyperbolic, due to the presence of vacuum.
Alazard, Thomas, Carles, Rémi
core +1 more source
Ray and wave dynamics in a static FRW spacetime with conical singularity
Physics Letters BIn this paper, we investigate a (1+3)-dimensional static Friedmann-Robertson-Walker (FRW) space-time, pierced by a cosmic string. Our analysis begins with a detail study of the geodesic motion of photon rays in this curved background, focusing on the ...
Faizuddin Ahmed, Abdelmalek Bouzenada
doaj +1 more source
Angular momentum redirection phase of vector beams in a non-planar geometry
Nanophotonics, 2021 An electric field propagating along a non-planar path can acquire geometric phases. Previously, geometric phases have been linked to spin redirection and independently to spatial mode transformation, resulting in the rotation of polarisation and ...
McWilliam Amy +3 more
doaj +1 more source
Classical Light Beams and Geometric Phases
, 2013 We present a study of geometric phases in classical wave and polarisation optics using the basic mathematical framework of quantum mechanics. Important physical situations taken from scalar wave optics, pure polarisation optics, and the behaviour of ...
Chaturvedi, S., Mukunda, N., Simon, R.
core +1 more source
Gravitational helicity interaction
, 2005 For gravitational deflections of massless particles of given helicity from a classical rotating body, we describe the general relativity corrections to the geometric optics approximation.
Barbieri, A., Guadagnini, E.
core +2 more sources
Structural insights into an engineered feruloyl esterase with improved MHET degrading properties
FEBS Letters, EarlyView.A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa +5 more
wiley +1 more source
A differential geometry approach to asymmetric transmission of light
, 2017 In the last ten years, the technology of differential geometry, ubiquitous in gravitational physics, has found its place in the field of optics. It has been successfully used in the design of optical metamaterials, through a technique now known as ...
Asenjo, Felipe A. +4 more
core +1 more source
LDAcoop: Integrating non‐linear population dynamics into the analysis of clonogenic growth in vitro
Molecular Oncology, EarlyView.Limiting dilution assays (LDAs) quantify clonogenic growth by seeding serial dilutions of cells and scoring wells for colony formation. The fraction of negative wells is plotted against cells seeded and analyzed using the non‐linear modeling of LDAcoop.
Nikko Brix +13 more
wiley +1 more source
Geometric optics and boundary layers for Nonlinear Schrodinger equations
, 2008 We justify supercritical geometric optics in small time for the defocusing semiclassical Nonlinear Schrodinger Equation for a large class of non-necessarily homogeneous nonlinearities.
Chiron, D., Rousset, F.
core +2 more sources