Results 71 to 80 of about 138,017 (338)

Forced quasi-periodic oscillations in strongly dissipative systems of any finite dimension

open access: yes, 2018
We consider a class of singular ordinary differential equations describing analytic systems of arbitrary finite dimension, subject to a quasi-periodic forcing term and in the presence of dissipation.
Gentile, Guido   +2 more
core   +1 more source

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

open access: yesAdvanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero   +12 more
wiley   +1 more source

Forced oscillations of nonspherical bubbles [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1977
The oscillation of a gas bubble in liquid under externally applied sinusoidal pressure field is studied. When the applied pressure amplitude is small and the forcing frequency is not in the neighborhood of the resonance frequency of the bubble, the familiar linear results are obtained.
openaire   +4 more sources

Magnetic Force Microscopy Signatures of Higher‐Order Skyrmions and Antiskyrmions

open access: yesAdvanced Functional Materials, EarlyView.
Magnetic force microscopy operated under vacuum conditions enables the qualitative identification of higher‐order skyrmions and antiskyrmions in Co/Ni multilayers at room temperature. Distinct stray‐field contrast signatures arise from vertical Bloch lines and complex domain‐wall configurations.
Sabri Koraltan   +8 more
wiley   +1 more source

A study of forced oscillations via Hilfer fractional derivative

open access: yesCQD Revista Eletrônica Paulista de Matemática, 2022
The present study seeks to understand the forced oscillations through modeling via fractional differential equation, using the derivative according to Hilfer and representing the external force as a succession of delta Dirac functions.
Silas de Sá Cavalcanti Melo   +1 more
doaj  

IMPROVING ΤΗΕ MECHANICAL SYSTEM OF ΤΗΕ ELECTRODΕ HOLDER TO REDUCE ELECTRODE VIBRATION

open access: yesNauka ta progres transportu, 2018
Purpose. The article is aimed: 1) to develop a mathematical model and to determine the dynamic parameters of a mechanical system of balanced electrode holder of electric arc furnace; 2) to perform a comparative estimation of the maximum amplitudes and ...
A. O. Vlasov, S. V. Zdanevich
doaj   +1 more source

Covalent Organic Frameworks for Photocatalytic CO2 Reduction: Metal Integration Principles, Strategies and Functions

open access: yesAdvanced Functional Materials, EarlyView.
Covalent organic frameworks (COFs) with metals have been recognized as versatile platforms for photocatalytic CO2 reduction (CO2PRR). Herein, an overview of metal integration strategies for COFs is systematically summarized. Regulatory mechanisms and structure–activity relationships between metal integration and COF‐based CO2PRR are emphasized.
Jie He   +5 more
wiley   +1 more source

Formation of bound states of electrons in spherically symmetric oscillations of plasma

open access: yes, 2010
We study spherically symmetric oscillations of electrons in plasma in the frame of classical electrodynamics. Firstly, we analyze the electromagnetic potentials for the system of radially oscillating charged particles. Secondly, we consider both free and
Dvornikov M   +10 more
core   +1 more source

Home - About - Disclaimer - Privacy