Results 71 to 80 of about 27,421 (244)

Real‐Time Characterization of Polypropylene Jet Dynamics in Melt Electrospinning Using Laser Diffraction and Image Analysis

open access: yesAdvanced Engineering Materials, Volume 27, Issue 13, July 2025.
This study uses real‐time laser diffraction image analysis to quantify fiber diameter changes and whipping behavior from the nozzle to the collector under varying electric field conditions. By capturing diffraction (scattering) intensity changes and bending angles, melt jet and whipping behavior are accurately assessed, supporting melt electrospinning ...
Jihwan Lim   +3 more
wiley   +1 more source

Advanced analytic treatment and efficient computation of the diffraction integrals in the extended Nijboer-Zernike theory [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2013
The computational methods for the diffraction integrals that occur in the Extended Nijboer-Zernike (ENZ-) approach to circular, aberrated, defocused optical systems are reviewed and updated.
van Haver S., Janssen A. J. E. M.
doaj   +1 more source

Electrical Conductivities and Low Frequency Opacities in the Warm Dense Matter Regime

open access: yesContributions to Plasma Physics, Volume 65, Issue 6, July 2025.
ABSTRACT In this article, we examine different approaches for calculating low frequency opacities in the warm dense matter regime. The relevance of the average‐atom approximation and of different models for calculating opacities, such as the Ziman or Ziman–Evans models is discussed and the results compared to ab initio simulations.
Mikael Tacu   +3 more
wiley   +1 more source

Some generating functions of modified Bessel polynomials from the view point of Lie group

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1984
In this paper we have derived a class of bilateral generating relation for modified Bessel polynomials from the view point of Lie group. An application of our theorem is also pointed out.
Asit Kumar Chongdar
doaj   +1 more source

Schur flows and orthogonal polynomials on the unit circle

open access: yes, 2006
The relation between the Toda lattices and similar nonlinear chains and orthogonal polynomials on the real line has been elaborated immensely for the last decades. We examine another system of the differential-difference equations known as the Schur flow
Golinskii, L.
core   +3 more sources

Transfer functions of generalized Bessel polynomials [PDF]

open access: yesIEEE Transactions on Circuits and Systems, 1977
The stability and approximation properties of transfer functions of generalized Bessel polynomials (GBP) are investigated. Sufficient conditions are established for the GBP to be Hurwitz. It is shown that the Pad approximants of $e^{-s}$ are related to the GBP.
openaire   +3 more sources

On the Replica Symmetric Solution in General Diluted Spin Glasses

open access: yesRandom Structures &Algorithms, Volume 66, Issue 4, July 2025.
ABSTRACT We present a unifying approach to studying the replica symmetric solution in general diluted spin glass models on random p$$ p $$‐uniform hypergraphs with sparsity parameter α$$ \alpha $$. Our result shows that there exist two key regimes in which the model exhibits replica symmetry and the free energy can be explicitly represented as the ...
Ratul Biswas, Wei‐Kuo Chen, Arnab Sen
wiley   +1 more source

On a Class of Integrals Involving a Bessel Function Times Gegenbauer Polynomials

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2007
We provide information and explicit formulae for a class of integrals involving Bessel functions and Gegenbauer polynomials. We present a simple proof of an old formula of Gegenbauer.
Stamatis Koumandos
doaj   +1 more source

Assessment of soil fertility and nutrient distribution for enhanced soil health and field management through an innovative approach

open access: yesAgrosystems, Geosciences &Environment, Volume 8, Issue 2, June 2025.
Abstract The principal agricultural region of alfalfa, maize, and rapeseed was examined for soil nutrients. Primary statistics for a parameter were maximum, minimum, mean, standard deviation, coefficient of variation, skewness, and kurtosis. Some parameters had non‐normal distributions and were statistically significant.
Amir Bostani   +2 more
wiley   +1 more source

An expansion formula for the H-function of two variables

open access: yesRevista Técnica de la Facultad de Ingeniería, 2011
The object of this note is to evaluate an integral associated with Bessel polynomials and the H-function of two variables and to apply it in proving an expansion formula for the H-function of two variables in series of product of the Bessel polynomials ...
R. K. Saxena, S. L. Kalla
doaj  

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