Results 41 to 50 of about 1,609 (180)

Behavioural Diversity of Fishes: Concepts, Drivers and Its Role in Conservation and Management

open access: yesFish and Fisheries, Volume 27, Issue 6, Page 1245-1268, November 2026.
ABSTRACT Human activity has altered nearly all ecosystems on Earth, contributing to substantial biodiversity loss across taxonomic, genetic and functional dimensions, from the intraspecific to the ecosystem scale. Yet some components of biodiversity remain hidden or underappreciated, including behavioural diversity.
Marie Prchalová   +25 more
wiley   +1 more source

Wideband beam domain sparse Bayesian learning passive focusing localisation algorithm

open access: yesIET Radar, Sonar & Navigation
To address the challenges of large‐aperture sonar systems passive localisation, this paper proposes the application of sparse Bayesian learning (SBL) for passive target localisation in the wideband beam domain. The proposed algorithm aims to overcome the
Hao Wang   +3 more
doaj   +1 more source

Changes in the acoustic activity of beaked whales and sperm whales recorded during a naval training exercise off eastern Canada

open access: yesScientific Reports, 2022
Experimental research has shown that beaked whales exhibit strong avoidance reactions to naval active sonars used during antisubmarine warfare training exercises, including cessation of echolocation and foraging activity.
Joy E. Stanistreet   +5 more
doaj   +1 more source

Classification of Surface Vehicle Propeller Cavitation Noise Using Spectrogram Processing in Combination with Convolution Neural Network

open access: yesSensors, 2021
This paper proposes a method to enhance the quality of detecting and classifying surface vehicle propeller cavitation noise (VPCN) in shallow water by using the improved Detection Envelope Modulation On Noise (DEMON) algorithm in combination with the ...
Nhat Hoang Bach   +2 more
doaj   +1 more source

Quantifying Deep Ocean Methane Along the Central Chilean Margin

open access: yesGeophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Cold seeps are dynamic seafloor environments that provide conduits for methane (CH4) to be transferred from marine sediments to the global ocean and, in shallow settings, the atmosphere. These seeps are ubiquitous along continental margins yet their spatial extent and impact on the marine carbon cycle are poorly constrained.
Scott T. Wieman   +10 more
wiley   +1 more source

Nature‐Derived Chitosan Biopolymer: A Promising Candidate for Sustainable Electronics

open access: yesAdvanced Materials Technologies, Volume 11, Issue 19, 7 October 2026.
In the creation of environmentally friendly devices, nature‐derived chitosan biopolymer is a promising contender for sustainable electronic research. It can be utilized to create more ecologically friendly scalable gadgets and has a variety of uses in different active layers of electronics.
Joshua McDonald   +3 more
wiley   +1 more source

Blue whales respond to anthropogenic noise.

open access: yesPLoS ONE, 2012
Anthropogenic noise may significantly impact exposed marine mammals. This work studied the vocalization response of endangered blue whales to anthropogenic noise sources in the mid-frequency range using passive acoustic monitoring in the Southern ...
Mariana L Melcón   +5 more
doaj   +1 more source

Solid‐State Multicolor Carbon Dots for Optoelectronic Displays: Synthesis, Tunability, and Device Integration

open access: yesChemPhotoChem, Volume 10, Issue 10, October 2026.
Solid‐state multicolor carbon dots are emerging as versatile, metal‐free emitters for next‐generation displays. This review connects synthesis and emission engineering with solid‐state PLQY, color purity, aggregation control, and excited‐state photophysics, highlighting recent progress in color‐conversion backlights, flexible electroluminescent systems,
Manpreet Kaur Dhindsa   +3 more
wiley   +1 more source

Scalable low‐cost seabed landers: the missing link for sustained, integrated, long‐term observations in dynamic shallow seas

open access: yesRemote Sensing in Ecology and Conservation, Volume 12, Issue 5, Page 832-840, October 2026.
Seabed landers, when equipped with a range of biotic and abiotic sensors, offer a non‐invasive and cost‐effective solution for ecosystem‐scale monitoring of Essential Biodiversity Variables (EBVs) and Essential Ocean Variables (EOVs) in dynamic shallow seas.
Arienne Calonge   +7 more
wiley   +1 more source

Measurement of the moving objects’ bearing by coherent integration of the spectral components of signals in the passive sonar

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The method of measuring bearing (azimuth) of a moving surface (underwater) object in the passive sonar is described. This method is considered to be a modification of signals phase comparing method.
S. R. Heister, D. N. Nguyen
doaj  

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