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4 articles for “acoustic theory”
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Piezo-electrically driven Thermoacoustic Refrigerator
Abstract: Thermoacoustic refrigeration is an emerging field of technology. This technology uses sound waves to pump heat across a temperature gradient and the sound waves are produced using piezoelectric material. The main aim of this idea is to reduce the usage of harmful refrigerants which are great threat to the global warming. The study focuses technically on using the piezo-electric materials to get the desired refrigeration effect. Moreover, the added advantage …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 5, Issue 3, 2018 · pp. 43–47 Read article
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Listening to Colonial Disruption: Sound, Silence, and Cultural Memory in the Works of Chinua Achebe
Abstract: This article examines the significance of sound and silence in the fiction of Chinua Achebe, arguing that auditory experience functions as a crucial medium through which cultural memory, identity, and resistance are represented. Although Achebe’s novels have been extensively studied in relation to colonialism, nationalism, and language politics, comparatively little attention has been paid to their acoustic dimensions. Drawing on postcolonial theory, oral tradition studies, and cultural memory studies, this …
Published in Emerging Trends in Languages · Vol. 3, Issue 2, 2026 · pp. 10–15 Read article
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Ultrasonic Studies in Binary Liquid Mixtures of Butylamine and Iso-Butylamine with 1-Decanol at 293, 303 and 313 K
Abstract: Normal 0 false false false EN-US X-NONE X-NONE Acoustic parameters like isentropic compressibility, acoustic impedance and intermolecular free length along with internal pressure of butylamine and iso-butylamine with 1-decanol have been determined from sound speed, density and viscosity measurements at 293, 303 and 313 K over the entire range of composition. These derived parameters were used to calculate excess functions like deviation in isentropic compressibility, excess acoustic impedance, excess intermolecular …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 4, Issue 1, 2013 · pp. 43–53 Read article
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Unravelling the Influence of Dimensions on the Thermoelectric Properties of AHEGNR
Abstract: The thermoelectric properties of hydrogenated edge semiconductor graphene nanoribbons (GNRs) have thus far been explored in detail. The effects of varying the sizes of zigzag hydrogenated edge graphene nanoribbons (ZHEGNRs) and armchair hydrogenated edge graphene nanoribbons (AHEGNRs) in terms of their properties were investigated in this study. This was achieved via the control of the graphene nanoribbon dimensions i.e., width and length by utilizing density functional theory in Quantum Espresso, …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 14, Issue 3, 2024 · pp. 45–51 Read article