Results 11 to 20 of about 393,759 (310)
A Review of Oxide Layer Formation and Corrosion Dynamics in Reinforced Concrete [PDF]
E3S Web of ConferencesCorrosion 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
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Harnessing waves for energy [PDF]
Environmental Science & Technology, 2009 Will engineers find ways to get energy from the world’s oceans in an environmentally safe and economical fashion?
openaire +2 more sources
Sensors, 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
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Energy Evolution Mechanism of Air Shock Wave Propagation and Attenuation Based on VMD–HT Energy Spectrum [PDF]
Journal 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
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Gravitational-wave asteroseismology with fundamental modes from compact binary inspirals
Nature 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
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Optimizing machine learning models for granular NdFeB magnets by very fast simulated annealing
Scientific 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
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International 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
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Hydrodynamic Analysis of 3-SPS Wave Energy Conversion Device [PDF]
E3S Web of Conferences, 2021 Wave energy has the advantages of high energy density, renewability, and wide distribution, and has been highly valued by many coastal countries.
Ji Zhifei +3 more
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Numerical optimization of Wells turbine for wave energy extraction
International Journal of Naval Architecture and Ocean Engineering, 2017 The present work focuses multi-objective optimization of blade sweep for a Wells turbine. The blade-sweep parameters at the mid and the tip sections are selected as design variables.
Paresh Halder +2 more
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Journal of Marine Science and Engineering, 2022 Generally, wave energy resource assessment and characterization are performed based on an entire wave spectrum, ignoring the detailed energy features that belong to wave systems, i.e., wind waves and swells. In reality, the energy is separately possessed
Xingjie Jiang +4 more
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