Results 21 to 30 of about 71,473 (264)

CFD studies of dynamic gauging [PDF]

open access: yesChemical Engineering Science, 2004
Dynamic gauging is a non-contact technique for measuring the thickness of soft deposit layers on solid surfaces immersed in liquid environments, in situ and in real time. The technique works by inducing a flow into a nozzle located close to, and normal to, the deposit surface; the relationship between pressure drop and mass flow rate yields a measure ...
J.Y.M. Chew   +3 more
openaire   +2 more sources

Orientational order of liquids and glasses via fluctuation diffraction

open access: yesIUCrJ, 2017
Liquids, glasses and other amorphous matter lack long-range order, which makes them notoriously difficult to study. Local atomic order is partially revealed by measuring the distribution of pairwise atomic distances, but this measurement is insensitive ...
Andrew V. Martin
doaj   +1 more source

A Study of Chaos in Dynamical Systems [PDF]

open access: yesJournal of Mathematics, 2018
The behavior of systems such as periodicity, fixed points, and most importantly chaos has evolved as an integral part of mathematics, especially in dynamical system. This research presents a study on chaos as a property of nonlinear science. Systems with at least two of the following properties are considered to be chaotic in a certain sense ...
S. Effah-Poku   +2 more
openaire   +2 more sources

Disentangling nonlinear geomagnetic variability during magnetic storms and quiescence by timescale dependent recurrence properties

open access: yesJournal of Space Weather and Space Climate, 2020
Understanding the complex behavior of the near-Earth electromagnetic environment is one of the main challenges of Space Weather studies. This includes both the correct characterization of the different physical mechanisms responsible for its ...
Alberti Tommaso   +4 more
doaj   +1 more source

Lie symmetries, bifurcation analysis, and Jacobi elliptic function solutions to the nonlinear Kodama equation

open access: yesResults in Physics, 2023
The present article formally studies the propagation of optical pulses in a nonlinear medium governed by the nonlinear Kodama equation. For this purpose, the Lie symmetries group is first adopted for similarity reduction and constructing some exact ...
K. Hosseini   +5 more
doaj   +1 more source

Magnetoencephalography in the study of brain dynamics [PDF]

open access: yesFunctional Neurology, 2014
To progress toward understanding of the mechanisms underlying the functional organization of the human brain, either a bottom-up or a top-down approach may be adopted. The former starts from the study of the detailed functioning of a small number of neuronal assemblies, while the latter tries to decode brain functioning by considering the brain as a ...
PIZZELLA, Vittorio   +5 more
openaire   +3 more sources

Spiking Neuron Mathematical Models: A Compact Overview

open access: yesBioengineering, 2023
The features of the main models of spiking neurons are discussed in this review. We focus on the dynamical behaviors of five paradigmatic spiking neuron models and present recent literature studies on the topic, classifying the contributions based on the
Luigi Fortuna, Arturo Buscarino
doaj   +1 more source

On the geometry of Hamiltonian vector fields [PDF]

open access: yesE3S Web of Conferences, 2023
It is known that vector fields play an important role in many areas of mathematics and technology, in particular, in the theory of dynamical systems. Hamiltonian dynamical systems are generated by Hamiltonian vector fields. The paper studies the geometry
Narmanov Abdigappar, Diyarov Bekzod
doaj   +1 more source

Calculation of effective pump dose in X-ray-pump/X-ray-probe experiments

open access: yesJournal of Synchrotron Radiation
In pump–probe experiments on solid materials performed within ultrafast X-ray science, the energy deposited by an X-ray pump pulse in the sample has a non-uniform spatial distribution.
Sebastião Antunes   +6 more
doaj   +1 more source

Theoretical studies for dynamical function of practical inerters

open access: yesNihon Kikai Gakkai ronbunshu, 2017
This study aims to establish the fundamental theory of function of the practical inerters. Inerter is effective component for mechanical vibration system to control vibration frequency characteristics. Many studies related to inerter had been examined in
Aki OGAWA, Kazuhiko ADACHI
doaj   +1 more source

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