Results 71 to 80 of about 127,881 (313)

High-Performance Extrinsic Fabry-Perot Fiber Optic Acoustic Sensor Based on Au/PI Composite Film

IEEE Access
This paper reports a novel Fabry-Perot fiber optic microphone based on Au/PI composite film, with an optimal F-P cavity length of $500 \, \mu \text{m}$ , and the maximum extinction ratio (ER) obtained is about 12 dB.
Zekun Zhu, Hanyu Shuai, Kun Jia, Yuanyuan Sun, Bo Jia, Pengwei Zhou   +5 more
doaj   +1 more source

Twin Crystal Moiré Metasurfaces for Crossing Flat‐Band Transport

Advanced Functional Materials, EarlyView.
This study introduces twin crystal moiré metasurfaces, breaking in‐plane symmetry to enable reconfigurable acoustic wave manipulation. By adjusting the twin angle and interlayer twist angle, various combinations of hyperbolic, flat bands, and elliptic states can be synthesized in the system.
Shida Fan, Chenglin Han, Kuan He, Chadi Ellouzi, Yunlong Wang, Li‐Qun Chen, Jie Sun, Zhaodong Xu, Chen Shen, Tianzhi Yang   +9 more
wiley   +1 more source

Effects of nightlife noise in a city center

Noise Mapping, 2021
The term Movida takes its name from the evening and night life of the city for their liveliness and animation. During the Movida, noise is one of the problems in the city centers due to the negative effects on the resident population.
Iannace Gino, Trematerra Amelia, Lombardi Ilaria   +2 more
doaj   +1 more source

Application of laser-based instrumentation for measurement of time-resolved temperature and velocity fields in the thermoacoustic system [PDF]

, 2010
This work aims to develop reliable laser-based measurement techniques to enable fundamental heat transfer and fluid flow studies in thermoacoustic systems.
Yu, Z., Jaworski, A.J., Shi, L., Yu, Zhibin, Yu, Z, Shi, L, Shi, Lei, Jaworski, Artur J, Jaworski, AJ   +8 more
core   +1 more source

A Novel Decellularized Fibrocartilage Graft Promotes Tympanic Membrane Repair

Advanced Healthcare Materials, EarlyView.
An off‐the‐shelf decellularized porcine meniscus fibrocartilage graft (MEND) is engineered for pediatric tympanoplasty. Featuring a microchannel architecture that promotes host cell invasion, MEND rapidly closes tympanic membrane perforations and fully remodels in vivo, outperforming fascia and matching cartilage grafts while avoiding donor‐site ...
Paul M. Gehret, Ryan M. Friedman, Gautham Nair, Stephanie L. Fung, Dana D. Ragbirsingh, John Germiller, Riccardo Gottardi   +6 more
wiley   +1 more source

Airborne sound insulation improvement on masonry partitions using additional plasterboard layers

Engineering Structures and Technologies, 2011
For the purposes of accumulating knowledge of how to comply with requirements for new buildings of obligatory sound class C or enhanced acoustic comfort sound classes A and B (Lithuanian Building Technical regulations STR 2.01.07:2003), the article ...
Marius Mickaitis, Aleksandras Jagniatinskis, Boris Fiks   +2 more
doaj   +1 more source

Design of Acoustic Signals for a Seal Deterrent Device

Electrical, Control and Communication Engineering, 2020
During the past decade, attacks by grey seals on fishing nets in the Baltic Sea have caused considerable loss of fish catch and damage to fishing gears.
Aboltins Arturs, Grizans Juris, Pikulins Dmitrijs, Terauds Maris, Zeltins Maris   +4 more
doaj   +1 more source

Research for the Presence of Unmanned Aerial Vehicle inside Closed Environments with Acoustic Measurements

Buildings, 2020
Small UAVs (unmanned aerial vehicle) can be used in many sectors such as the acquisition of images or the transport of objects. Small UAVs have also been used for terrorist activities or to disturb the flight of airplanes.
Giuseppe Ciaburro, Gino Iannace, Amelia Trematerra   +2 more
doaj   +1 more source

Natural Biomaterials for Osteochondral Repair: From Source to Strategy

Advanced Healthcare Materials, EarlyView.
Biological origin‐guided overview of natural biomaterials and therapeutic strategies for osteochondral tissue engineering. The circular diagram categorizes representative materials and strategies into plant/algae‐derived, microbial‐derived, animal‐derived, and human‐derived sources, centered on an osteochondral defect repair model.
Hengyu Liu, Hanyang Zhang, Wenbo Yang, Hao Chen, Jincheng Wang, Fei Chang   +5 more
wiley   +1 more source

A pocket artificial buzzing system for the trumpet

Acta Acustica
Artificial playing systems are very useful tools to study musical instruments, to compare experiments with simulations, develop and validate new numerical models.
Fréour Vincent, Fujita Kazuhiro, Arimoto Keita   +2 more
doaj   +1 more source