Results 61 to 70 of about 19,183 (214)
Cooperative Authentication in Underwater Acoustic Sensor Networks [PDF]
, 2019 With the growing use of underwater acoustic communications (UWAC) for both industrial and military operations, there is a need to ensure communication security.
Casari, Paolo +2 more
core +2 more sources
Energy Science &Engineering, EarlyView.This research explores how fluid flow, structural movement, and sound interact in an elastic baffle system. Using a numerical approach based on the finite element method, the study analyzes how noise and vibrations change with different baffle configurations. The findings reveal that shortening the baffle by half reduces noise transmission by 9%, while
Tohid Adibi +5 more
wiley +1 more source
Results in EngineeringThis study explores the application of double-walled carbon nanotubes (DWCNTs) in underwater acoustic materials, aiming to overcome the low-frequency absorption limitations of traditional materials.
Junyu Li +4 more
doaj +1 more source
FlexMat, EarlyView.Abstract Soft robots, engineered from highly compliant materials, offer superior adaptability and safety in unstructured environments compared to their rigid counterparts. Recent advancements, fueled by bio‐inspiration and material programmability, have led to the rapid co‐evolution of their core modules: actuation, sensing, protection, energy, and ...
Qiulei Liu +3 more
wiley +1 more source
Engineering ReportsThe interest of this article is to obtain the underwater broadband sound absorption characteristics by filling three layers of bubbles in Polydimethylsiloxane polymer (PDMS).
Nansha Gao, Qiaogao Huang, Guang Pan
doaj +1 more source
Uncertainty assessment for a novel optically shallow water radiometric acquisition platform
Limnology and Oceanography: Methods, EarlyView.Abstract We present a novel motorized platform, a custom‐built jet‐ski designed for acoustic and radiometric measurements in optically shallow coastal waters. This platform integrates in‐water radiometers with single‐beam and multi‐beam acoustic sensors, along with a suite of active and passive instruments (conductivity‐temperature‐depth, fluorescence,
Raphaël Mabit +2 more
wiley +1 more source
Low-frequency active noise control of an underwater large-scale structure with distributed giant magnetostrictive actuators [PDF]
, 2017 A light and thin underwater large-plate active acoustic structure is developed that satisfies the particular requirements of high pressure resilience, low frequency and high efficiency encountered in underwater work environments.
Thomas, P. J. (Peter J.), Wang, Wenjie
core +1 more source
Glyco‐Nanogels for Modulating Pseudomonas aeruginosa Biofilm
Macromolecular Rapid Communications, EarlyView.Nanogels presenting α‐galactose and β‐fucose can significantly alter Pseudomonas aeruginosa biofilm dynamics through their interaction with lectins. Application timing is crucial: pre‐treatment reduces biofilm, while treatment after biofilm initiation increases biomass.
Sophia Rosencrantz +4 more
wiley +1 more source
Metasurfaces with Embedded Rough Necks for Underwater Low-Frequency Sound Absorption
Applied SciencesMarine noise pollution is a significant threat to global marine ecosystems and human activities. Most underwater sound-absorbing materials operate in the mid-to high-frequency bands (typically 1–10 kHz for mid-frequency and above 10 kHz for high ...
Dan Xu +4 more
doaj +1 more source
Advances in Civil Engineering, 2019 Reservoir dams are mostly built in alpine valley areas. The water surface of the river valley is narrow and the geometric features of hydraulic structures are complex, which result in different absorption, reflection, and diffraction effects on sound ...
Yan Xiang +3 more
doaj +1 more source