Results 151 to 160 of about 45,283 (307)

Monte Carlo model of the uncertainty of SEA loss factors

open access: yes, 2010
Finite Element Methods are widely used to model vibro-acoustic systems, but as the modal density becomes higher this type of model becomes inaccurate and impractical.
Fernandez, M.J.   +3 more
core   +1 more source

Comprehensive DFT Analysis of FeSi and RhSi: Structural Stability, Electronic Contrast and Transport‐Optical Responses

open access: yesAdvanced Physics Research, EarlyView.
This comprehensive density functional theory analysis investigates the structural, electronic, optical, mechanical, and thermoelectric properties of FeSi, c‐RhSi, and o‐RhSi. Results reveal distinct electronic and optical contrasts among the materials.
Md Farhan Hassan   +4 more
wiley   +1 more source

Prediction of the sound transmission loss of sandwich structures based on a simple test procedure

open access: yes, 2010
Sandwich and honeycomb materials are increasingly used by the vehicle and building industries. Consequently, the prediction of the acoustic properties and in particular the sound transmission loss of sandwich structures is of importance.
Nilsson, Anders Christian,, Piana, E. A.
core  

Acoustic Properties of Recycled Polyurethane Foam Waste and Polyvinyl Acetate Composites

open access: yesEnvironmental and Climate Technologies
According to a European Commission report, around 675 000 tons of polyurethane foam waste is generated in Europe annually. Only 11 % of this waste is recycled, and the rest goes to landfills or is incinerated, so it is worth looking for new ways to treat
Tubelis Jonas   +2 more
doaj   +1 more source

A perspective from the Mesozoic: Evolutionary changes of the mammalian skull and their influence on feeding efficiency and high‐frequency hearing

open access: yesThe Anatomical Record, EarlyView.
Abstract The complex evolutionary history behind modern mammalian chewing performance and hearing function is a result of several changes in the entire skeletomuscular system of the skull and lower jaw. Lately, exciting multifunctional 3D analytical methods and kinematic simulations of feeding functions in both modern and fossil mammals and their ...
Julia A. Schultz
wiley   +1 more source

The effects of sound propagation and avoidance behaviour on naval sonar levels received by cetaceans

open access: yes, 2012
The use of active sonar is deemed to be essential for naval operations, but its potential impact on marine life has raised concerns worldwide. In a risk-assessment framework, characterisation of risk of harm is accomplished by combining exposure ...
Wensveen, Paul J.
core  

Are there morpho‐acoustic patterns of adaptation in nonhuman primate ears? Testing the role of ecology and habitat in shaping ear morphology and function

open access: yesThe Anatomical Record, EarlyView.
Abstract Analysis of the variation in the bony structures of the inner and middle ear provides critical insights into functional morphology, as well as adaptive morphology across primates. In this study, we investigated whether ear morphology patterns are related to the ecological characteristics of species and their habitats to test two acoustic ...
Myriam Marsot   +4 more
wiley   +1 more source

Recent advances on active control of sound transmission through ventilation windows

open access: yes, 2017
Windows are often the weakest part in a building in terms of sound transmission loss from outside. Many researchers have applied active noise control to improve the sound transmission loss of windows, which includes distributing an array of loudspeakers ...
Qiu, X
core  

Sound transmission loss of expansion chambers with staggered upper and lower chamber

open access: yes, 2020
The sound transmission losses across expansion chambers with the upper and lower chambers offset (staggered) inside a duct were studied experimentally in the present investigation.
S K Tang, R C K Leung
core  

Clade‐wide morphological and functional variation of the sauropsid columella

open access: yesThe Anatomical Record, EarlyView.
Abstract The columella (=stapes) is the middle ear bone of reptiles that transmits vibrations from the environment to the inner ear. It has been shown to exhibit extensive interspecific morphological disparity in several clades; however, its morphological variation and associated functional consequences remain poorly described.
John Peacock   +4 more
wiley   +1 more source

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