Results 141 to 150 of about 497,921 (244)

A three-point boundary-value problem for a hyperbolic equation with a non-local condition

open access: yesElectronic Journal of Differential Equations, 2002
We use an energy method to solve a three-point boundary-value problem for a hyperbolic equation with a Bessel operator and an integral condition. The proof is based on an energy inequality and on the fact that the range of the operator generated is dense.
Said Mesloub, Salim A. Messaoudi
doaj  

Full‐Space Terahertz Airy Beam Shaping via Composite Bilayer Metasurface With Switchable Amplitude–Phase Encoding Channels

open access: yesNanophotonics, Volume 15, Issue 21, 12 November 2026.
A composite bilayer metasurface integrates linear‐polarization amplitude–phase modulation with circular‐polarization Pancharatnam–Berry phase modulation, enabling multidimensional terahertz Airy beam manipulation within a single compact aperture. The highly integrated platform supports diverse Airy beam generation and offers new opportunities for ...
Yunting Bai   +9 more
wiley   +1 more source

On a class of hybrid integral transformations (Bessel-Fourier-Bessel-...-Fourier-Bessel) on the polar axis with 2n junction points

open access: yes, 1993
The hybrid integral transformations (Bessel-Fourier-Bessel-...-Fourier-Bessel) are constructed on the polar axis with 2n junction points by using the method of a delta-shaped sequence regarded as a Dirichlet kernel. The principal identity of the integral
Ленюк, М.П.   +1 more
core  

Sufficient conditions for integral operator defined by Bessel functions

open access: yes, 2020
. The main object of the present paper is to derive several sufficient conditions for integral operator defined by Bessel functions of the first kind to be convex and strongly convex of given order in the open unit ...
B A Frasin
core  

TRANSFORMATION OPERATORS FOR THE PERTURBED MODIFIED BESSEL EQUATION

open access: yesProceedings of the Institute of Mathematics and Mechanics, National Academy of Sciences of Azerbaijan
Summary: The perturbed modified Bessel equation on the entire axis is considered. By means of transformation operator an integral representation of the Jost-type solution is found. An estimate is obtained with respect to the kernel of the transformation operator.
Khanmamedov, Agil Kh., Mamedova, Afag F.
openaire   +1 more source

A Hidden History of Unhappiness

open access: yes
Critical Quarterly, EarlyView.
Joe Moran
wiley   +1 more source

Real‐Time Neurochemical Sensing in Zebrafish: Electrochemical and Fluorescent Approaches

open access: yesAnalysis &Sensing, Volume 6, Issue 6, November 2026.
The use of zebrafish has emerged as a powerful approach for real‐time neurochemical measurements. This review highlights recent advances in electrochemical and fluorescent sensing strategies that enable dynamic measurements in live preparations of this complex vertebrate. These complementary approaches provide new insights into neurochemical signaling,
Piyanka Hettiarachchi   +2 more
wiley   +1 more source

High‐Efficiency Laser‐Assisted Manufacturing of Silicon Carbide Wafers and Components: A Critical Review

open access: yesEngineering Reports, Volume 8, Issue 11, November 2026.
Laser‐assisted machining enables controlled modification of SiC, significantly improving machinability, surface integrity, and tool life compared to conventional methods. This review establishes structure–process–performance relationships and proposes optimized LAM strategies for efficient, damage‐minimized, and scalable SiC manufacturing.
Jasgurpreet Singh Chohan   +9 more
wiley   +1 more source

Beyond Connection: Paradoxes of Psychedelic Resonance in Late Modernity

open access: yesFuture Humanities, Volume 4, Issue 2, November 2026.
ABSTRACT This essay explores the enduring suspicion that psychedelic experiences are antithetical to the structural dynamic of modern societies through Hartmut Rosa's concepts of ‘resonance’ and ‘social acceleration’. Rosa's theoretical framework is particularly generative for studying the social meaning of contemporary psychedelia because it enables a
Mateo Sanchez Petrement
wiley   +1 more source

Quantifying Skin Sodium Concentration With Novel Very Rapid Biexponential T2 Relaxometry and Signal Loss Compensation Methodology

open access: yesMagnetic Resonance in Medicine, Volume 96, Issue 5, Page 2228-2239, November 2026.
ABSTRACT Purpose To accurately measure skin tissue sodium concentration (TSC) through development of spin‐3/2 relaxometry methodology that also considers blood sodium. Methods Mxy generation during RF excitation is substantially reduced by very rapid T2f.
Gurparkash Singh   +2 more
wiley   +1 more source

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