Results 31 to 40 of about 2,115 (205)

Assessment of the cartilage transplant thickness after removing of the tympanic membrane retraction pocket (finiteelement modelling)

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2021
The retraction pocket emergence of the tympanic membrane (eardrum) leads to the sound conduction disorder of the middle ear. Surgical removal of fixed retraction pockets leads to perforations.
Sergei M. Bosiakov   +4 more
doaj   +1 more source

(Non)Resonance Bonds in Molecular Dynamics Simulations: A Case Study concerning C60 Fullerenes

open access: yesEntropy
In the case of certain chemical compounds, especially organic ones, electrons can be delocalized between different atoms within the molecule. These resulting bonds, known as resonance bonds, pose a challenge not only in theoretical descriptions of the ...
Jacek Siódmiak
doaj   +1 more source

Eigenfrequency of a Schumann Resonance

open access: yes, 2021
There are different numerical models, such as the transmission-line matrix model or partially uniform knee model used to predict Schumann radiation. This report introduces a new idea, and reasoning to the previously stated idea of locating Schumann resonances on a single particle’s radiation pattern using a Golden ratio and their Octave, triad ...
openaire   +1 more source

Bending Properties and Vibration Characteristics of Dowel-Laminated Timber Panels Made with Short Salvaged Timber Elements

open access: yesBuildings, 2023
Salvaged timber elements often have length limitations, and therefore, their reuse in structural products normally would require additional processing and end-to-end joining.
Lorenzo Giordano   +2 more
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

SOME CALCULUS RELATIONS FOR DETERMINING SOME OF THE MECHANICAL PROPERTIES OF COMPOSITE SANDWICH BARS REINFORCED WITH METAL FABRIC [PDF]

open access: yesFiabilitate şi Durabilitate, 2014
In this paper, starting from some composite samples being in free vibration, I establish a way to determine the damping factor and the eigenfrequency for the first eigenmode.
Cosmin-Mihai MIRIŢOIU
doaj  

Analysis of the Frequency Interaction of the Turbine Block in the Stand for the Magnitude of the Error in Measuring the Turbine’s Power

open access: yesApplied Sciences, 2021
An algorithm for constructing a dynamic analysis during the formation of a wave field of stand for testing turbines and the effect of the frequency interaction of the stand’s elements on the measurement of its magnitude is described.
Anton Petrochenkov   +3 more
doaj   +1 more source

IGA Laplace Eigenfrequencies Distributions and Estimations: Impact of Reparametrization on Eigenfrequency Behavior

open access: yesCoRR
This work addresses the Galerkin isogeometric discretization of the one-dimensional Laplace eigenvalue problem subject to homogeneous Dirichlet boundary conditions on a bounded interval. We employ GLT theory to analyze the behavior of the eigenfrequencies when a reparametrization is applied to the computational domain. Under suitable assumptions on the
Noureddine Lamsahel   +2 more
openaire   +2 more sources

Above Room Temperature Ferroelectricity in Epitaxially Strained KTaO3

open access: yesAdvanced Materials, EarlyView.
Through precise epitaxial engineering, the cubic and paraelectric KTaO3${\rm KTaO}_3$ is transformed into a robust ferroelectric. By leveraging lattice‐mismatched substrates to apply controlled epitaxial strain, a stable ferroelectric ground‐state is achieved with a transition temperature as high as 475 K, establishing KTaO3${\rm KTaO}_3$ as a highly ...
Tobias Schwaigert   +11 more
wiley   +1 more source

A Time-Shifting Algorithm for Alleviating Convergence Difficulties at Interior Acoustic Resonance Frequencies

open access: yesApplied Sciences, 2021
This paper proposes a time-shifting boundary element method in the time domain to calculate the radiating pressures of an arbitrary object pulsating at eigenfrequencies of the interior (i.e., interior resonance frequencies).
Jui Hsiang Kao
doaj   +1 more source

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