Results 111 to 120 of about 191,644 (326)

Liquid Metal Microrobots for Magnetically Guided Transvascular Navigation

Advanced Materials, EarlyView.
Liquid metal‐based microrobots combine magnetic steering, intrinsic X‐ray visibility and softness, to navigate blood vessels even against flow. Under clinically relevant magnetic fields, liquid metal microrobots roll along vessel walls, cross endothelial barriers, and accumulate in target tissues.
Xiaohui Ju, Roshan Velluvakandy, Xianghua Wu, Miguel Angel Merlos Rodrigo, Zbyněk Heger, Kamila Bendíčková, Jan Frič, Martin Pumera   +7 more
wiley   +1 more source

Passive acoustic monitoring paired with machine learning outperforms playback surveys for a rare and cryptic species, the Black‐billed Cuckoo (Coccyzus erythropthalmus)

Conservation Science and Practice
Monitoring rare and cryptic species presents unique challenges and is of high importance for conservation practitioners. In this study, we evaluate the use of in‐person playback surveys and passive acoustic monitoring for a rare and cryptic avian species,
Anna M. Kurtin, Erim Gómez, Nicole Hussey, Anna Noson, Megan O'Reilly, Tessa Rhinehart, Brandi Skone, Bella Wengappuly, Andy J. Boyce   +8 more
doaj   +1 more source

Clicking throughout the year: sperm whale clicks in relation to environmental conditions off the west coast of South Africa

Endangered Species Research, 2020
Knowledge of cetacean occurrence and behaviour in southern African waters is limited, and passive acoustic monitoring has the potential to address this gap efficiently. Seasonal acoustic occurrence and diel-vocalizing patterns of sperm whales in relation
Shabangu, FW, Andrew, RK
doaj   +1 more source

Photochemical Fuel Carrier Molecules for Robotic Embodied Energy

Advanced Materials, EarlyView.
We designed a novel fuel carrier photoresponsive molecule for on‐demand energy storage and release. Carrier molecules undergo bond scission under UV light to release chemical fuel and locally generate propulsive Marangoni flows. We demonstrate this photochemical embodied energy strategy in small‐scale robots and active matter systems, enabling ...
Chuqi Huang, Songah Jeong, Ji Woo Kim, Kanyarat Mantala, Zenghao Zhang, Hyungwoo Kim, Abdon Pena‐Francesch   +6 more
wiley   +1 more source

Transfer Learning for Distance Classification of Marine Vessels Using Underwater Sound

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Marine environments are increasingly affected by human activities, which generate underwater noise as a by-product. Acoustic data from these environments can offer valuable insights for tracking human activity and improving the monitoring of sensitive ...
Wout Decrop, Klaas Deneudt, Clea Parcerisas, Elena Schall, Elisabeth Debusschere   +4 more
doaj   +1 more source

Method and apparatus for calibrating the ionosphere and application to surveillance of geophysical events [PDF]

, 1984
The columnar electron content of the ionosphere between a spacecraft and a receiver is measured in realtime by cross correlating two coherently modulated signals transmitted at different frequencies (L1,L2) from the spacecraft to the receiver using a ...
Macdoran, P. F.
core   +1 more source

Robust sound event detection in bioacoustic sensor networks

, 2019
Bioacoustic sensors, sometimes known as autonomous recording units (ARUs), can record sounds of wildlife over long periods of time in scalable and minimally invasive ways.
Bello, Juan Pablo, Farnsworth, Andrew, Kelling, Steve, Lostanlen, Vincent, Salamon, Justin   +4 more
core   +1 more source

Enhancing AIS to Improve Whale-Ship Collision Avoidance and Maritime Security [PDF]

, 2009
Whale-ship strikes are of growing worldwide concern due to the steady growth of commercial shipping. Improving the current situation involves the creation of a communication capability allowing whale position information to be estimated and exchanged ...
Fall, Kevin, McGillivary, Philip A, Schwehr, Kurt   +2 more
core   +2 more sources

Large‐Area 2D Metasurface‐Based Triboelectric E‐Skin Arrays: Contact & Proximity Tactile Mapping with Broadband Acoustic Readouts

Advanced Materials, EarlyView.
Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief, Swagato Sarkar, Anik Kumar Ghosh, Osvalds Verners, Kamal Kumar Meena, Su‐Hyeong Lee, Soosang Chae, Tobias A. F. König, Beate Krause, Andreas Fery, Mehmet Sait Özer, Anindya Nag, Amit Das   +12 more
wiley   +1 more source

Localizing individual soniferous fish using passive acoustic monitoring

Ecological Informatics, 2018
Abstract Identifying where fish inhabit is a fundamentally important topic in ecology and management allowing acoustically sensitive times and areas to be prioritized. Passive acoustic localization has the benefit of being a non-invasive and non-destructive observational tool, and provides unbiased data on the position and movement of aquatic animals.
R.L. Putland, A.G. Mackiewicz, A.F. Mensinger   +2 more
openaire   +2 more sources