Results 51 to 60 of about 1,300 (175)

Ultra‐broadband sound absorption characteristics in underwater ultra‐thin metamaterial with three layer bubbles

Engineering Reports
The 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

Prospects of acoustic metamaterials for acoustic stealth

Zhongguo Jianchuan Yanjiu, 2020
With the gradual realization of low frequency detection and other characteristics of sonar technology, the development of stealth technology is facing great challenges.
XU Weilong, PENG Weicai, ZHANG Junjie, HE Xuesong   +3 more
doaj   +1 more source

Green swans and blue skies: Climate change and insolvency risk for financial institutions

International Insolvency Review, EarlyView.
Abstract This lecture in honour of the late Gabriel Moss QC and Ian Fletcher QC examines the challenge of climate‐related financial risk. Prudential regulators and central banks recognize that the systemic nature of climate‐related financial risk makes it an emerging vulnerability relevant to cross‐border insolvency resolution.
Janis Sarra
wiley   +1 more source

Investigation on the Absorption Characteristics of the Pressure-Resistant Metastructures

Journal of Marine Science and Engineering
The development of pressure-resistant sound-absorbing materials is crucial for enhancing the stealth performance of underwater vehicles operating at great depths.
Lejingyi Zhou, Weibo Wang, Xinsheng Fang, Wenwei Wu   +3 more
doaj   +1 more source

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

Beyond Reality Avoidance: Unraveling the Paradox of Escapism Through Self‐Monitoring and Autonomy Mechanisms for Consumers' Life Satisfaction

Psychology &Marketing, EarlyView.
ABSTRACT This study introduces the Paradox of Escapism, exploring how the act of escaping reality can evolve from a short‐term avoidance strategy to a mechanism for self‐regulation and enhanced life satisfaction. Employing five rigorous, multimethod investigations, including qualitative interviews and sentiment analysis (Study 1), Structural Equation ...
Thamiris Magalhães de Sousa, Flávio Santino Bizarrias, Thelma Valéria Rocha, Larissa Luz Raposo   +3 more
wiley   +1 more source

Metasurfaces with Embedded Rough Necks for Underwater Low-Frequency Sound Absorption

Applied Sciences
Marine 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, Yazhou Zhu, Sha Wang, Zhenming Bao, Ningyu Li   +4 more
doaj   +1 more source

Dumpsite Seabed Characterization of the San Pedro Basin, CA, From Autonomous Vehicle Observations

Journal of Field Robotics, EarlyView.
ABSTRACT A wide‐area seabed survey was conducted using autonomous underwater vehicles (AUVs) in a known dumpsite off the coast of Southern California that has been found to have widespread sediment contamination from the chemical dichlorodiphenyltrichloroethane (DDT).
Ryan A. McCarthy, Dylan Kriegman, Sophia T. Merrifield, Heidi Batchelor, Eric J. Terrill   +4 more
wiley   +1 more source

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

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