Results 71 to 80 of about 1,533 (215)

Study on Sound Wave Scattering Effects of Different Markers Placed on Dam Face in Deepwater Reservoir

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, GuangZe Shen, ZhengFei Cheng, Kai Zhang   +3 more
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, Simon Bélanger, Pascal Bernatchez   +2 more
wiley   +1 more source

Estudo e desenvolvimento de algoritmos de sonar ativo para o mapeamento de áreas submersas [PDF]

, 2015
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2015.Recentes avanços no cenário marítimo brasileiro - como a descoberta e exploração do pré-sal e a ...
Ristow, João Paulo
core  

Refining techniques for high‐frequency monitoring of chlorophyll a fluorescence in estuarine systems

Limnology and Oceanography: Methods, EarlyView.
Abstract Concentrations of the photosynthetic pigment chlorophyll a are commonly used as a proxy for phytoplankton biomass in aquatic systems. Traditional methods for extracting chlorophyll a in discrete samples limit measurement frequency, while in situ sensor technology provides high frequency chlorophyll a fluorescence measurements at a more ...
Nicole Dix, Hannah Nicklay, Jacob Cianci‐Gaskill, Shannon Dunnigan Kimmel, J. Silas Tanner, Kim Cressman, Steven E. McMurray, Yoshimi M. Rii, Rikke Jeppesen, Rachel Guy, Erik Smith   +10 more
wiley   +1 more source

Aversiveness of sound in marine mammals : psycho-physiological basis, behavioural correlates and potential applications

, 2010
Understanding what psycho-physiological and behavioural factors influence aversiveness of sound in marine mammals is important for conservation and practical applications.
Götz, Thomas
core  

A cross-scale acoustic computational approach for micro-macro mode mapping to facilitate the development of high-performance underwater two-phase composites

Journal of Materials Research and Technology
The acoustic stealth challenge of underwater vehicles has emerged as a critical research priority. While current solutions predominantly emphasize novel structural designs (geometric optimization and configuration engineering), polymeric materials such ...
Jun-Yu Li, Qi-Bai Huang
doaj   +1 more source

Research on Acoustic Recognition of Underwater Targets based on the Principle of Sound Absorption

Highlights in Science, Engineering and Technology, 2023
Due to the concealment of underwater engineering, the detection and monitoring of hydraulic structure construction is often more complicated and difficult than surface engineering. Cofferdam construction inspection and settlement construction quality inspection, especially to ensure the accuracy and efficiency of inspection in complex environments ...
openaire   +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, Jo Sing Julia Tang, Karina Koenig, Sany Chea, Ruben R. Rosencrantz   +4 more
wiley   +1 more source

Report on Air Launched Autonomous Underwater Vehicles [PDF]

, 2011
The feasibility of Autonomous Underwater Vehicles (AUVs) being launched from aircraftwas funded through the NERC Oceans 2025 programme, investigating a more economicalof seeding wide swaths of ocean with sensors carrying out wide scale, synoptic ...
Stevenson, P., P Stevenson
core  

Recent progress on the development of hydrogel‐based microneedles for transdermal drug delivery

VIEW, EarlyView.
This study provides a comprehensive and up‐to‐date analysis of recent progress in HMN technology, covering fundamental transdermal delivery mechanisms and design principles, biomaterials used in HMN fabrication, drug loading and release strategies, and emerging therapeutic applications.
Mohammad Muhtasim Ittisaf, Salman Farsi Taharat, Md. Sadek Miah, Hasan Tasnim Salehin, M. Azam Ali, Shoeb Ahmed   +5 more
wiley   +1 more source