Results 91 to 100 of about 440,511 (349)

Prospective Evaluation of the Efficacy of Isolated Balloon Eustachian Tuboplasty: Short- and Medium-term Follow-up Results Based on Tubomanometry, ETDQ-7, Tympanometry, and Valsalva Maneuver

International Archives of Otorhinolaryngology
Introduction Balloon eustachian tuboplasty (BET) allows the treatment of the main etiology of eustachian tube disfunction (ETD).
Cátia Azevedo, Filipa Moreira, António Fontes Lima, Fernando Milhazes Mar, Sérgio Vilarinho, Luís Dias   +5 more
doaj   +1 more source

A novel technique for measuring the reflection coefficient of sound absorbing materials [PDF]

, 2000
A new method to measure the acoustic behaviour of sound absorbing material in an impedance tube is presented. The method makes use of a novel particle velocity sensor, the microflown, and a microphone.
Bree, H-E. de, Eerden, F.J.M. van der, Honschoten, J.W. van   +2 more
core   +2 more sources

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source

Acoustic reflex on newborns: the influence of the 226 and 1,000 Hz probes

CoDAS
PURPOSE: To analyze the occurrence of acoustic reflex and its threshold on newborns using the 226 and 1,000 Hz probes. METHODS: Thirty-six newborns with "PASS" results in newborn hearing screening and tympanogram with one or two peaks for both probe ...
Lilian Cássia Bórnia Jacob-Corteletti, Josilene Luciene Duarte, Fernanda Zucki, Luciane Domingues Figueiredo Mariotto, José Roberto Pereira Lauris, Kátia de Freitas Alvarenga   +5 more
doaj   +1 more source

Comparison of Two Acoustic Waveguide Methods for Determining Liner Impedance

, 2001
Acoustic measurements taken in a flow impedance tube are used to assess the relative accuracy of two waveguide methods for impedance eduction in the presence of grazing flow.
Michael G. Jones, W. R. Watson, M. B. Tracy, T. Parrott   +3 more
semanticscholar   +1 more source

The high strain-rate behaviour of three molecular weights of polyethylene examined with a magnesium alloy split-Hopkinson pressure bar

, 2013
A traditional split-Hopkinson pressure bar system has been modified by the addition of ZK60A magnesium alloy pressure bars in order to increase the resolution of data when examining specimens of low-density, high-density and ultra-high molecular weight ...
Hughes, Foz, Prudom, Andrew, Swallowe, Gerry   +2 more
core   +1 more source

A new acoustic lens material for large area detectors in photoacoustic breast tomography [PDF]

arXiv, 2013
Acoustic lenses made of acrylic plastic (PMMA) have been used to enlarge the acceptance angle of sensitive large surface area detectors and improve lateral resolution. However, PMMA lenses introduce image artifacts due to ultrasound internal reflections within the lenses.
arxiv  

A Visible Light‐Responsive Hydrogel to Study the Effect of Dynamic Tissue Stiffness on Cellular Mechanosensing

Advanced Functional Materials, EarlyView.
A visible light‐responsive polyacrylamide‐azobenzene hydrogel enables safe, reversible stiffness control for studying cell mechanobiology without harmful UV exposure. This approach reveals stem cells respond rapidly to mechanical changes, showing altered shape and protein distribution within one hour.
Aafreen Ansari, Sanchyan Bhowmik, Kaiwen Zhang, Chayla L. Reeves, Danielle Vahala, Yu Suk Choi, Amy Gelmi, Alexander N. Combes, Rocky S. Tuan, Vinh X. Truong, John S. Forsythe, Jessica E. Frith   +11 more
wiley   +1 more source

The potential of date palm midribs-based fabric acoustic panels for sustainable interior design

Ain Shams Engineering Journal, 2023
This paper presents an experimental study of acoustic absorption of novel fabric acoustic panels utilizing non-woven fabric cores and fabric facings made of date palm midribs-fibers; to be used as absorbent panels for spaces with privacy needs.
E.A. Darwish, Mohamad Midani
doaj  

THE STUDY OF ROAD PAVEMENT PERFORMANCE THROUGH IMPACT HAMMER TESTS

, 2020
Noise pollution has become an important issue. One of the main sources of noise in residential areas is represented by transportation and by the interaction between tyre and road surface.
F. Praticò, G. Pellicano, R. Fedele
semanticscholar   +1 more source