Results 1 to 10 of about 625,137 (266)
Transmission losses in left-handed materials [PDF]
Physical Review E, 2002 We numerically analyze the origin of the transmission losses in left-handed structures. Our data confirms that left handed structures can have very good transmission properties, in spite of the expectable dispersion of their effective permeability and refraction index. The large permittivity of the metallic components improves the transmission.
markos, P. +2 more
openaire +3 more sources
Green Shipping—Multifunctional Marine Scrubbers for Emission Control: Silencing Effect
Applied Sciences, 2021 Scrubber systems abate the sulphur oxide emissions of engines when cheap fuel oils that are high in sulphur content are employed as combustibles. However, the ships with these voluminous devices installed on board is space demanding.
Giada Kyaw Oo D’Amore +3 more
doaj +1 more source
Factual power loss reduction by augmented monkey optimization algorithm [PDF]
International Journal of Research in Industrial Engineering, 2020 This paper presents Augmented Monkey Optimization Algorithm (AMOA) applied to solve optimal reactive power problem. Communal behaviour of monkeys has been utilized to model the algorithm.
L. Kanagasabai
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Applied Sciences, 2021 With the rapid increase in automobiles, the importance of reducing low-frequency noise is being emphasized for a comfortable urban environment. Helmholtz resonators are widely used to attenuate low-frequency noise over a narrow range.
Byunghui Kim +6 more
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Noise prediction considering transmitted sound from noise barriers
Nihon Kikai Gakkai ronbunshu, 2019 In the noise prediction on railway viaducts by numerical acoustic analysis, it is premised that the noise barriers have sufficient sound insulation performance.
Daigo SATO, Akira OMOTO
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Study Onpower Loss in Watt-hour Meter Wiring Check Based on Wireless Solutions
Journal of Harbin University of Science and Technology, 2018 Switching out directly or judging by wired signal was the conventional method of checking meter wiring. A method which improves the efficiency of troubleshooting and greatly reduces the influence on users is presented by this paper for users of ...
KOU Ying-gang +3 more
doaj +1 more source
Advanced Rating Method of Airborne Sound Insulation
Applied Sciences, 2016 This paper describes an advanced calculation scheme based on the loudness level linked to the specific fluctuation strength yielding a weighted normalized loudness level difference as a single number value.
Reinhard O. Neubauer
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2D Modeling of Wave Propagation in Shallow Water by the Method of Characteristics [PDF]
Archives of Acoustics, 2022 In this paper, a 2D numerical modeling of sound wave propagation in a shallow water medium that acts as a waveguide, are presented. This modeling is based on the method of characteristic which is not constrained by the Courant–Friedrichs–Lewy (CFL ...
Mohammad Reza Khalilabadi
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Analytical and computational acoustic modelling of side outlet muffler and its extension in the modelling of tapered side outlet [PDF]
Archives of Acoustics, 2022 Mufflers are popular in the suppression of noise levels coming from various machinery. The most common parameters for the evaluation of the performance of mufflers are transmission loss, noise level, and insertion loss. The transmission loss is evaluated
Sandeep Kumar Vishwakarma +1 more
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Topology Optimization of Low-Loss Z-Bend 2D Photonic Crystal Waveguide
Photonics, 2023 In this article, we design a low-loss, high-bandwidth Z-bend photonic silicon crystal waveguide bending in a triangular lattice through topology optimization.
Gang Liu +6 more
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