Results 91 to 100 of about 2,768,062 (267)
Ultrasonic waves in classical gases
, 2017 The velocity and absorption coefficient for the plane sound waves in a classical gas are obtained by solving the Boltzmann kinetic equation, which describes the reaction of the single-particle distribution function to a periodic external field.
Gorenstein, M. I. +2 more
core +1 more source
Characteristics of developed flexible polyurethane foams reinforced with coconut coir fibres and recycled tyres [PDF]
, 2012 Flexible Polyurethane (PU) foam is generally used in seat cushions of automotive seating for comfort and supporting the occupants. However, due to the demand for more comfortable compartment; seat cushions are now designed for better riding comfort
Chan, Wen Shan
core
Photodarkening of amorphous selenium under high pressure
, 2002 The photodarkening phenomena of amorphous Se have been studied by the optical absorption coefficient, sound velocity and attenuation measurements. The light illumination at low temperatures induces the photodarkening, and the photodarkened state is ...
Endo, Hirohisa +4 more
core +1 more source
BuildingsPorous materials have emerged as one of the most widely employed sound-absorbing materials in practical applications, owing to their excellent sound absorption properties and lightweight nature.
Yiguo Yin, Wei Guan
doaj +1 more source
Buildings, 2017 In recent years, many open-plan houses have been proposed not only for comfort reasons, but also as a place to engage in family life. However, in contrast to the fact that this kind of plan makes it easy for people to interact, the daily life household ...
Toru Matsuda +5 more
doaj +1 more source
Probing Topological Superconductors with Sound Waves [PDF]
arXiv, 2015 A new method is introduced for probing Topological Superconductors. The integration of the superconding fermions generates a topological $\mathbf{Chern-Simons}$ sound action . Dislocations induce Majorana zero modes inside the sample, resulting in a new Hamiltonian which couple the Majorana modes, the electron field and the non-Abelian strain field
arxiv
AUTEX Research Journal, 2017 A series of single-hole hollow polyester fiber (SHHPF) reinforced hydrogenated carboxyl nitrile rubber (HXNBR) composites were fabricated. In this study, the sound absorption property of the HXNBR/SHHPF composite was tested in an impedance tube, the ...
Jie Hong, Sheng Jiang, Xiong Yan
doaj +1 more source
The contribution of molecular relaxation in nitrogen to the absorption of sound in the atmosphere [PDF]
Results and statistical analysis are presented for sound absorption in N2-H2O binary mixtures at room temperature. Experimental procedure, temperature effects, and preliminary results are presented for sound absorption in N2-H2O binary mixtures at ...
Meredith, R. W., Zuckerwar, A. J.
core +1 more source
Nonlinear excitation of second sound in quantum solutions He3-He4 due to light wave absorption [PDF]
arXiv, 2007 Nonlinear excitation of second sound in superfluid solutions He3-He4 by light waves due to their absorption is discussed. Nonlinear wave equations that model the interaction of second-sound waves with light waves are derived, the expression for the nonlinear interaction length is obtained and an order-of-magnitude numerical estimate of the distance at ...
arxiv
The Determination of Reverberant Sound Absorption Coefficients from Acoustic Impedance Measurements [PDF]
, 1950 Albert London
openalex +1 more source