Results 31 to 40 of about 649,990 (312)

Sound pressure-dependent acoustic absorption by perforated rigid-frame porous materials

open access: yesActa Acustica
Porous materials are one of the most common classes of sound absorbers for acoustic treatments. However, thin layers of these classical materials are not efficient at absorbing low-frequency sound waves, which is a practical shortcoming.
Cavalieri Théo, Van Damme Bart
doaj   +1 more source

Adjusting Phenotypes by Noise Control

open access: yesPLoS Computational Biology, 2012
Genetically identical cells can show phenotypic variability. This is often caused by stochastic events that originate from randomness in biochemical processes involving in gene expression and other extrinsic cellular processes. From an engineering perspective, there have been efforts focused on theory and experiments to control noise levels by ...
Kyung Hyuk Kim, Herbert M. Sauro
openaire   +4 more sources

Analysis of Flow Field Structure Characteristics of Dual Impinging Jets at Different Velocities

open access: yesAerospace
The flow structure and unsteady evolution characteristics of dual impinging jets represent a flow problem of significant engineering importance in the aerospace field.
Yifan Zhao   +5 more
doaj   +1 more source

A new approach for an induced coagulation of particulate matter through thermo-acoustic agglomeration [PDF]

open access: yes, 2023
49th International Congress and Exposition on Noise Control Engineering (INTERNOISE 2020): Advances in Noise and Vibration Control Technology: Seoul, Korea, 23-26 August 2020202312 bcchVersion of RecordRGCPublishedPublisher ...
Yu, JCW, Li, Y, Lai, SK, Zhang, Y
core  

Characterization of the aircraft bay/landing gear coupling noise at low subsonic speeds and its suppression using leading-edge chevron spoiler

open access: yesAdvances in Mechanical Engineering, 2019
When the aircraft opens the bay door to let the landing gear either drop or retract, the incoming flow will result in a significant amount of coupling noise from the bay and the landing gear.
Kun Zhao   +4 more
doaj   +1 more source

Comparative study of surface integral methods in aeroacoustic prediction

open access: yesFrontiers in Physics, 2023
Introduction: Surface integral methods based on the acoustic analogy and Kirchhoff formulation are widely employed in computational aeroacoustics. The computational accuracy is usually highly dependent on the selections of the acoustic prediction method ...
Chen Xu   +5 more
doaj   +1 more source

The Helmholtz resonator with different types of necks [PDF]

open access: yes, 2023
46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017, 27-30 August 2017, Hong Kong202311 bckwNot applicableRGCPublishedPublisher ...
Wang, X, Mak, CM, Shi, X, Cai, C
core  

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

Numerical modeling techniques for noise emission of free railway wheels

open access: yesRailway Engineering Science
In this article, we consider the numerical prediction of the noise emission from a wheelset in laboratory conditions. We focus on the fluid–structure interaction leading to sound emission in the fluid domain by analyzing three different methods to ...
Linus Taenzer   +4 more
doaj   +1 more source

A Method for Determining the Optimal Location of a Distributed Sensor/Actuator

open access: yesShock and Vibration, 1994
The optimal location problem of distributed sensor/actuator for observation and control of a flexible structure is investigated. Using a property of controllability and observability grammian matrices, this approach employs a nonlinear optimization ...
Byeongsik Ko   +2 more
doaj   +1 more source

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