Results 111 to 120 of about 5,719 (203)

The role of absorption in 3D electron diffraction dynamical structure refinement

open access: yesActa Crystallographica Section A, Volume 82, Issue 6, Page 409-418, November 2026.
This work establishes the role of absorption in 3D electron diffraction dynamical refinement, where its inclusion is shown to significantly affect refinement outcomes only in high‐Z materials at thicknesses approaching ξg.The role of absorption in 3D electron diffraction is established through analytical theory, simulation and dynamical refinement.
Benjamin Colmey   +3 more
wiley   +1 more source

Selector form of Weaver's conjecture and frame sparsification

open access: yesProceedings of the London Mathematical Society, Volume 133, Issue 5, November 2026.
Abstract We show an extension of a probabilistic result of Marcus, Spielman, and Srivastava, which resolved the Kadison–Singer problem, to block diagonal positive semidefinite random matrices. We use this result to show several selector results, which generalize their partition counterparts.
Marcin Bownik
wiley   +1 more source

First Observation of Four‐Band Ion Cyclotron Whistlers

open access: yesGeophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Ion cyclotron whistlers are frequently observed in low Earth orbit, typically formed when right‐hand polarized lightning whistlers undergo polarization reversal at crossover frequencies. In this study, we for the first time report a four‐band ion cyclotron whistler event detected by Van Allen Probe A.
Huicong Chen   +6 more
wiley   +1 more source

On Some Integral Properties of Modified Bessel Functions

open access: yesIzvestiya of Saratov University. New Series. Series: Mathematics. Mechanics. Informatics, 2015
Summary: New integral equations for modified Bessel functions of an arbitrary complex order are presented. The properties of Lebedev-Skalskaya integral transforms are investigated.
openaire   +1 more source

Dielectric Nanoparticle Dimers on a Mirror for Enhanced Photoluminescence of Quantum Dots

open access: yesNanophotonics, Volume 15, Issue 20, 27 October 2026.
Hybrid metal–dielectric nanoantennas based on nanoparticle‐on‐mirror architectures are proposed to enhance quantum dot photoluminescence. Silicon nanocylinder dimers on aluminum substrates enable simultaneous excitation enhancement and directional emission through strong light–matter interactions.
Rafael Ramos Uña   +2 more
wiley   +1 more source

Accelerating Sustainable Epoxy Resin Development Through Bayesian Optimization and Inverse Design

open access: yesJournal of Applied Polymer Science, Volume 143, Issue 37, October 5, 2026.
Development of a machine learning framework for the optimization of the Tg of partially bio‐based epoxy resin formulations in a 13‐component design space using Bayesian optimization, active learning, random design, and inverse design. The results show that the BO effectively navigates high‐dimensional formulation spaces, and the final ML model could ...
Natalie Wunder   +3 more
wiley   +1 more source

An integral containing a Bessel Function and a Modified Bessel Function of the First Kind

open access: yes, 2017
Here we discuss the calculation of an integral containing the Bessel function J0(r) and the modified Bessel function of the first kind I1(r). The calculus is based on a function of J0(r), I1(r) and of their derivatives, having a Wronskian form. The method here described could be useful for training the students in the manipulation of such integrals.
openaire   +2 more sources

Drag on a Circular Cylinder Oscillating in a Dusty Viscous Fluid

open access: yesEngineering Transactions, 1983
Rectilinear oscillations of а circular cylinder in an infinite expanse of а viscous, imcompre­ssible fluid with embended small solid spherical particles are studied.
A. Indrasena, Ali Mohamed Awin
doaj  

Axisymmetric Creeping Flow of a Micropolar Fluid over a Sphere Coated with a Thin Fluid Film

open access: yesJournal of Applied Fluid Mechanics, 2013
Consideration is given to the problem of steady axisymmetric Stokes flow of a micropolar fluid past a sphere coated with a thin, immiscible Newtonian fluid layer.
B.R. Gupta, . Dr. Satya Deo
doaj  

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