Results 11 to 20 of about 1,958,889 (196)

A new approach to investigate wave dissipation in viscoelastic tubes: Application of wave intensity analysis [PDF]

open access: yes, 2005
Wave dissipation in elastic and viscoelastic medium has been investigated extensively in the frequency domain. The aim of this study is to examine the pattern of wave dissipation in the time-domain using wave intensity analysis.
Feng, J, Khir, AW
core   +1 more source

Measured reduction in Alfv\'en wave energy propagating through longitudinal gradients scaled to match solar coronal holes [PDF]

open access: yes, 2019
We have explored the effectiveness of a longitudinal gradient in Alfv\'en speed in reducing the energy of propagating Alfv\'en waves under conditions scaled to match solar coronal holes.
Bose, Sayak   +5 more
core   +3 more sources

A Review of Oxide Layer Formation and Corrosion Dynamics in Reinforced Concrete [PDF]

open access: yesE3S Web of Conferences
Corrosion is a natural phenomenon that threatens the durability of steel reinforcement in reinforced concrete. Initially, the reinforcement is protected by a layer of iron oxides known as the passivation layer, formed due to the high alkalinity of the ...
Sadeq Hajar   +3 more
doaj   +1 more source

Weak and strong wave turbulence spectra for elastic thin plate [PDF]

open access: yes, 2013
Variety of statistically steady energy spectra in elastic wave turbulence have been reported in numerical simulations, experiments, and theoretical studies.
Takaoka, Masanori, Yokoyama, Naoto
core   +2 more sources

A 32-Bit Single Quadrant Angle-Controlled Chipless Tag for Radio Frequency Identification Applications

open access: yesSensors, 2022
A 32-bit chipless RFID tag operating in the 4.5–10.9 GHz band is presented in this paper. The tag has a unique multiple-arc-type shape consisting of closely packed 0.2 mm wide arcs of different radii and lengths.
Muhammad Noman   +5 more
doaj   +1 more source

Energy Evolution Mechanism of Air Shock Wave Propagation and Attenuation Based on VMD–HT Energy Spectrum [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
Energy spectrum is an important tool for reflecting time–frequency characteristics of signals. The energy spectra of air shock wave at different explosion distances ware analyzed to investigate the energy evolution mechanism in the propagation and ...
W. Shang   +4 more
doaj   +1 more source

Gravitational-wave asteroseismology with fundamental modes from compact binary inspirals

open access: yesNature Communications, 2020
Independently measuring the tidal deformability and the fundamental oscillation mode (fmode) frequency enables tests of gravity and the nature of compact binaries.
Geraint Pratten   +2 more
doaj   +1 more source

Optimizing machine learning models for granular NdFeB magnets by very fast simulated annealing

open access: yesScientific Reports, 2021
The macroscopic properties of permanent magnets and the resultant performance required for real implementations are determined by the magnets’ microscopic features. However, earlier micromagnetic simulations and experimental studies required relatively a
Hyeon-Kyu Park   +3 more
doaj   +1 more source

Wave attenuation in mangrove forests; field data obtained in Trang, Thailand [PDF]

open access: yes, 2012
Mangroves thrive in sheltered intertidal areas in the tropics and sub-tropics. Due to this position at the interface between land and sea, mangroves play an important role in the attenuation of waves.
Balke, Thorsten   +9 more
core   +3 more sources

Effect of Blade Profile on the Performance of Wells Turbine under Unidirectional Sinusoidal and Real Sea Flow Conditions

open access: yesInternational Journal of Rotating Machinery, 2007
This paper presents the effect of blade profile and rotor solidity on the performance of Wells turbine operating under unidirectional unsteady flow conditions. In the study, four kinds of blade profile were selected, that is, NACA0020, NACA0015, CA9, and
A. Thakker, R. Abdulhadi
doaj   +1 more source

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