Noise control - Open Access .click

Results 11 to 20 of about 593,514 (265)

Graphical Models, 2008
We introduce a stable noise function with controllable properties. The well-known Perlin noise function is generated by interpolation of a pre-defined random number table. This table must be modified if user-defined constraints are to be satisfied, but modification can destroy the stability of the table. We integrate statistical tools for measuring the
Jong-Chul Yoon, In-Kwon Lee
openaire +2 more sources

Tacticity in chiral phononic crystals

Nature Communications, 2019
Here, the authors study the influence of tacticity on the dynamic behaviour of chiral structured periodic media comprising rotational inertia elements. This opens the way towards new mechanisms for wave control by exploiting spin-spin coupling mechanism.
A. Bergamini +7 more
doaj +1 more source

Control of Environmental Noise [PDF]

Journal of the Air Pollution Control Association, 1973
The article reviews the current state of knowledge of noise and how people respond to noise. Sources of community noise are discussed and existing federal legislation pertaining to noise is mentioned. Methods of reducing the noise impact on communities from aircraft, surface transportation, and industrial sites are presented. Interior noise in industry,
openaire +2 more sources

Potential role of polycyclic aromatic hydrocarbons as mediators of cardiovascular effects from combustion particles

Environmental Health, 2019
Air pollution is the most important environmental risk factor for disease and premature death, and exposure to combustion particles from vehicles is a major contributor.
Jørn A. Holme +4 more
doaj +1 more source

Respirable stone particles differ in their ability to induce cytotoxicity and pro-inflammatory responses in cell models of the human airways

Particle and Fibre Toxicology, 2021
Background Respirable stone- and mineral particles may be a major constituent in occupational and ambient air pollution and represent a possible health hazard.
Vegard Sæter Grytting +9 more
doaj +1 more source

Bio-Inspired Aerodynamic Noise Control: A Bibliographic Review

Applied Sciences, 2019
It is well-known that many species of owl have the unique ability to fly silently, which can be attributed to their distinctive and special feather adaptations.
Yong Wang +4 more
doaj +1 more source

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

Acta 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

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

Aerospace
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

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

Advances 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

Investigating transcription factor dynamics in health and disease using FRAP

FEBS Letters, EarlyView.
FRAP analysis of GFP‐tagged transcription factors reveals how molecular mobility and target engagement change in response to drug treatment. By combining live‐cell imaging, quantitative model fitting, and statistical analysis, this approach uncovers transcription factor dynamics linked to disease mechanisms, providing a powerful framework for ...
Kannan Govindaraj +3 more
wiley +1 more source

physics
condition monitoring