Results 81 to 90 of about 1,533 (215)

Underwater acoustic properties of graphene nanoplatelet-modified rubber

, 2018
A series of graphene nanoplatelet-modified acrylonitrile-butadiene rubber-based underwater acoustic absorbing materials were prepared. The dynamic mechanical properties, underwater sound absorption properties, differential scanning calorimetry ...
Jiang WK, 陈猛, 刘宇, Yuan BH, 姜恒   +4 more
core   +1 more source

The Effects of Noise on the Juvenile Life Stage of Crustaceans: Behavioral, Cellular, and Molecular Responses in Procambarus clarkii

Integrative Zoology, EarlyView.
Juvenile Procambarus clarkii exposed to noise exhibited behavioral changes, shifts in enzymatic activity, and altered expression of stress and immune genes. The findings highlight the sensitivity of invertebrate juveniles to anthropogenic acoustic pollution.
Maria Ceraulo, Giuseppa Buscaino, Clarissa De Vita, Aiti Vizzini, Mirella Vazzana, Elena Papale, Francesco Longo, Francesco Paolo Faraone, Manuela Mauro   +8 more
wiley   +1 more source

Identifying the pre‐Odra river system with hydroacoustic and seismic reflection imagery offshore Rügen Island, southern Baltic Sea

Boreas, EarlyView.
Understanding the course and dynamics of ancient river systems, such as the pre‐Odra, provides valuable insights into the post‐glacial evolution of landscapes and riverine processes. The northwest‐trending pre‐Odra was an important drainage system of the European mainland into the Baltic Basin during and after the Scandinavian Ice Sheet retreat ...
Maryse C. Schmidt, Elisabeth Seidel, Christian Hübscher, Benedikt Haimerl, Jonas Preine   +4 more
wiley   +1 more source

A three-dimensional bistatic reverberation model of underwater explosion by interface scattering at variable sound speeds

Journal of Low Frequency Noise, Vibration and Active Control, 2019
Underwater reverberation is a main limitation of the sonar performance and thereby the reverberation level estimation becomes crucial. In this study, based on the Lambert law and ray theory, a model for predicting 3D bistatic reverberation performance by
Guo Rui, Lei Liu, Sheng Zhen-Xin, Song Pu   +3 more
doaj   +1 more source

Green Developmentalism? The Political Economy of Hydropower in India in the 21st Century

Development and Change, EarlyView.
ABSTRACT This article critically examines the political economy of hydropower in India since its global reconfiguration as ‘green energy’ in the early 2000s. While an opportune convergence of interests among key global, national and subnational stakeholders contributed to the greening of hydropower in India, this reframing did not produce the expected ...
Vasudha Chhotray, Harsh Vasani
wiley   +1 more source

Design and Performance Analysis of Integrated Pressure-Resistant and Sound-Absorbing Coating with High-Transmittance Composite

水下无人系统学报
To address the significant degradation in sound absorption performance of conventional cavity-type sound-absorbing rubber coatings under high pressure environments, an integrated pressure-resistant and sound-absorbing coating with a high-transmittance ...
Jian TANG, Zhuohao JIN, Chen LU, Wenjiong CHEN   +3 more
doaj   +1 more source

Numerical simulation of a viscoelastic sound absorbent coating with a doubly periodic array of cavities

Cogent Engineering, 2018
Nowadays, research on underwater sound absorbing coatings is important on marine combats. Due to high cost of acoustic experimental tests, determination of an accurate simulation method for assessment of the coating characteristics is an important goal ...
Sayed Hamid Sohrabi, Mohammad Javad Ketabdari   +1 more
doaj   +1 more source

Early‐life temperature drives recruitment success in Eurasian perch (Perca fluviatilis) populations

Journal of Fish Biology, EarlyView.
Abstract Interannual fluctuations in the abundance of young‐of‐the‐year (YOY) European perch (Perca fluviatilis) were studied in two large French peri‐alpine lakes using a 12‐year dataset of late summer hydroacoustic surveys. Previous research has highlighted the importance of temperature.
Valentin Cavoy, Jean Guillard, Cécilia Barouillet, Orlane Anneville, Najwa Sharaf, Christian Gillet, Chloé Goulon   +6 more
wiley   +1 more source

Experimental research on sound absorption properties of impedance gradient composite with multiphase

, 2020
In order to improve the sound absorption performance of the sound absorbing material in water, impedance gradient underwater sound absorbing composite with multiphase (IGCM) is prepared in this study.
Pei DL(裴东亮), Wang YR(王育人), Liu RX(刘瑞霞)   +2 more
core   +2 more sources

Investigation on Low-Frequency and Broadband Sound Absorption of the Compact Anechoic Coating Considering Hydrostatic Pressure

Journal of Marine Science and Engineering
The anechoic coating capable of absorbing sound energy in low frequencies within broadband is essential to conceal underwater vehicles. However, the geometric deformation and modification of mechanical parameters under hydrostatic pressure affect the ...
Xinsheng Fang, Xiao Pan, Xiaowei Zhang, Dongsheng Li, Xuewen Yin, Yabin Jin, Weibo Wang, Wenwei Wu   +7 more
doaj   +1 more source