Results 21 to 30 of about 4,616,768 (322)

A numerical study of a method for measuring the effective in situ sound absorption coefficient [PDF]

, 2012
The accuracy of a method [Wijnant et al., “Development and applica- tion of a new method for the in-situ measurement of sound absorption”, ISMA 31, Leuven, Belgium (2010).], for measurement of the effective area-averaged in situ sound absorption ...
André de Boer, de Bree H.-E., Erwin R. Kuipers, Fahy F., Ysbrand H. Wijnant   +4 more
core   +3 more sources

Fiber Weight Fraction Effect to Acoustic Properties of RHDPE Cantula Composite

Mekanika, 2017
In this study, composites made from recycled HDPE and Cantula fiber have been done and the absorption coefficient have been measured. Composites rHDPE-Cantula were made using hot press for approximately 60 minutes with 170oC temperature while pressure ...
Muhammad Taufik Burhany Hendrowarsito, Wijang Wisnu Raharjo, Dwi Aries Himawanto   +2 more
doaj   +1 more source

Ab Initio Study of Optical Properties of Hybrid Films Based on Bilayer Graphene and Single-Walled Carbon Nanotubes

C, 2023
In recent years, the possibility of combining graphene and carbon nanotubes has attracted much attention from researchers attempting to obtain new multifunctional hybrid materials with promising properties.
Michael M. Slepchenkov, Pavel V. Barkov, Dmitry A. Kolosov, Olga E. Glukhova   +3 more
doaj   +1 more source

Interplay between localization and absorption in disordered waveguides [PDF]

, 2013
This work presents results of ab-initio simulations of continuous wave transport in disordered absorbing waveguides. Wave interference effects cause deviations from diffusive picture of wave transport and make the diffusion coefficient position- and ...
Payne, Ben, Yamilov, Alexey G.
core   +3 more sources

Effects of Applied Magnetic Field on the Optical Properties and Binding Energies Spherical GaAs Quantum Dot with Donor Impurity

Nanomaterials, 2022
The screened modified Kratzer potential (SMKP) model is utilized to scrutinize the impacts of an applied magnetic field (MF) on the binding energies and linear and nonlinear optical properties spherical GaAs quantum dot with donor impurity (DI).
Collins Okon Edet, Emre Bahadir Al, Fatih Ungan, Norshamsuri Ali, Nursalasawati Rusli, Syed Alwee Aljunid, Rosdisham Endut, Muhammad Asjad   +7 more
doaj   +1 more source

Subjective Effects of Sound Absorption and Investigation of Reverberation Times in Modern Japanese Dwellings

Applied Sciences, 2021
This study aimed to reveal the influence of sound absorption in general dwellings on the subjective evaluation of acoustics. First, a subjective experiment was conducted using a full-scale room model. The results indicate that the feelings of silence and
Kazuma Hoshi, Toshiki Hanyu, Ryoichi Suzuki, Daisuke Watanabe   +3 more
doaj   +1 more source

Sound absorption by clamped poroelastic plates [PDF]

, 2008
Measurements and predictions have been made of the absorption coefficient and the surface acoustic impedance of poroelastic plates clamped in a large impedance tube and separated from the rigid termination by an air gap.
Attenborough K., Aygun H., H. Aygun, Horoshenkov K. V., K. Attenborough   +4 more
core   +1 more source

Inverse Braking Radiation and Resonance Absorption in Corona Plasmas of Inertial Confinement Fusion [PDF]

Journal of Optoelectronical Nanostructures, 2020
: In this paper, combining the Maxwell equations with the electron balanceequation, we obtain the inverse braking radiation absorption coefficient in a laser fusioncorona plasma.
Ebrahim Heidari, حیدر ایزدنشان, Mohammad Kouhi   +2 more
doaj  

Optical Property Measurement and Temperature Monitoring in High-Intensity Focused Ultrasound Therapy by Diffuse Optical Tomography: A Correlation Study

Applied Sciences, 2022
In this article, we propose a new approach utilizing diffuse optical tomography (DOT) to monitoring the changes in tissues’ optical properties and temperature in high-intensity focused ultrasound (HIFU) therapy.
Hao Yang, Sean Aleman, Huabei Jiang
doaj   +1 more source

Development of sound absorption coefficient prediction technique of ultrafine fiber

Nihon Kikai Gakkai ronbunshu, 2016
This report deals with sound absorption coefficient prediction technique of ultrafine fiber. As the sound absorption material used for the interior noise reduction of the automobile, the fiber with a diameter of several μm is considered.
Yoshio KUROSAWA
doaj   +1 more source