Results 31 to 40 of about 19,183 (214)

An efficient approach for broadband sound absorption using periodic multi-layer solid inclusions in acoustic coatings. [PDF]

open access: yesPLoS One
Anechoic coatings are of significance for enhancing the acoustic stealth of underwater equipment. Acoustic coatings with multi-layers of periodic solid inclusions are proposed and investigated for broadband sound absorption. Firstly, an analysis model is
Li X, Liu P, Zhang X, Zhu X, Zhang H.
europepmc   +2 more sources

Design and Simulation Analysis of Sound Absorption Structure for Acoustic Detection-Based Underwater Gliders

open access: yes水下无人系统学报
The radiation noise of mechanical noise has a significant impact on the acoustic detection performance of acoustic detection-based underwater gliders. In order to address this problem, this paper introduced sound absorption structure into the study of ...
Donghai ZENG   +5 more
doaj   +1 more source

An efficient scalable scheduling mac protocol for underwater sensor networks [PDF]

open access: yes, 2018
Underwater Sensor Networks (UWSNs) utilise acoustic waves with comparatively lower loss and longer range than those of electromagnetic waves. However, energy remains a challenging issue in addition to long latency, high bit error rate, and limited ...
Alfouzan, Faisal   +3 more
core   +1 more source

Fibre laser hydrophones for cosmic ray particle detection

open access: yes, 2013
The detection of ultra high energetic cosmic neutrinos provides a unique means to search for extragalactic sources that accelerate particles to extreme energies.
Buis, E. J.   +3 more
core   +1 more source

Airborne laser bathymetry for documentation of submerged archaeological sites in shallow water [PDF]

open access: yes, 2015
Knowledge of underwater topography is essential to the understanding of the organisation and distribution of archaeological sites along and in water bodies.
Briese, Christian   +6 more
core   +4 more sources

Magnetic Textiles: A Review of Materials, Fabrication, Properties, and Applications

open access: yesAdvanced Materials Technologies, EarlyView.
Magnetic textiles (M‐textiles) are emerging as a programmable materials platform that merges magnetic matter with hierarchical textile structures. This article consolidates magnetic material classes, textile architectures, and fabrication and magnetization strategies, revealing structure–property–function relationships that govern magneto‐mechanical ...
Li Ke   +3 more
wiley   +1 more source

Hard‐Magnetic Soft Millirobots in Underactuated Systems

open access: yesAdvanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang   +4 more
wiley   +1 more source

Development of polymer-based nanocomposites for underwater sound absorption

open access: yes, 2021
Underwater sound can have a detrimental effect on marine animals due to the ever-increasing noise levels in their pristine habitat. It has also been commonly used to detect underwater floating objects via a sonar system. To absorb unwanted underwater sound, polymers (e.g., rubber), which have similar impedance to that of water, are widely used for ...
openaire   +2 more sources

GATA4‐Driven Transcription of HtrA1 Promotes Cellular Senescence in Ménière's Disease and Age‐Related Audio‐Vestibular Dysfunction

open access: yesAdvanced Science, EarlyView.
This study identifies the HDAC6/GATA4/HtrA1 axis as a critical driver of cellular senescence in the inner ear. GATA4 nuclear translocation, facilitated by HDAC6 downregulation, transcriptionally activates HtrA1, promoting hair cell senescence, SASP, and audio‐vestibular dysfunction in models of Ménière's disease and age‐related audio‐vestibular ...
Na Zhang   +16 more
wiley   +1 more source

Study of absorption loss effects on acoustic wave propagation in shallow water using different empirical models [PDF]

open access: yes, 2017
Efficient underwater acoustic communication and target locating systems require detailed study of acoustic wave propagation in the sea. Many investigators have studied the absorption of acoustic waves in ocean water and formulated empirical equations ...
Ahmed, M. S.   +3 more
core  

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