Results 21 to 30 of about 840,202 (297)

Acoustic Absorption Coefficient of Oil Palm Midrib Composite

Jurnal Fisika Flux
Composite from oil palm midrib waste is one of the natural fiber materials that can reduce noise. Its material sample composite with gypsum was placed inside an impedance tube, which fitted with the mass of palm midrib mill, i.e., 0.1 kg, 0.15 kg, and 0 ...
Defrianto Defrianto, Muhammad Ahlunnazah, Saktioto Saktioto, Nuraina Fika Lubis   +3 more
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

Nonadiabatic approach to dimerization gap and optical absorption coefficient of the Su-Schrieffer-Heeger model

, 2002
An analytical nonadiabatic approach has been developed to study the dimerization gap and the optical absorption coefficient of the Su-Schrieffer-Heeger model where the electrons interact with dispersive quantum phonons.
A. Takahashi, A.J. Heeger, B. Friedman, B.R. Weinberger, C.N. Yang, C.N. Yang, C.R. Fincher, C.S. Yannoni, D. Baranowski, D. Moses, D. Schmeltzer, E. Fradkin, E. Jeckelmann, G. Minton, H. Takayama, H. Zheng, H. Zheng, H. Zheng, J. Ashkanazi, J. Jiang, J. Ma, J. Solyom, J. Voit, J. Yu, J.E. Hirsch, J.M. Ginder, J.T. Gammel, K. Harigaya, K. Kim, K. Maki, K. Nasu, L.G. Caron, M. Nakahara, M.J. Rice, N. Suzuki, P. Brüesch, P.M. Grant, Q. Wang, R.H. McKenzie, R.P. McCall, S. Etemad, S. Ichinose, S. Kivelson, T. Holstein, W.K. Wu, W.P. Su, W.P. Su, W.P. Su, X.G. Wan, Y. Zou, Y. Zou, Z.B. Su   +51 more
core   +1 more source

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

THE ABSORPTION COEFFICIENTS OF URANIUM COMPOUNDS. [PDF]

Journal of the American Chemical Society, 1906
n ...
openaire   +2 more sources

Integrating cavity based gas cells: a multibeam compensation scheme for pathlength variation [PDF]

, 2016
We present a four beam ratiometric setup for an integrating sphere based gas cell, which can correct for changes in pathlength due to sphere wall contamination.
Bergin, S., Francis, Daniel, Hodgkinson, Jane, Tatam, Ralph P.   +3 more
core   +2 more sources

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  

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

Internal photoemission from quantum well heterojunction superlattices by phononless free-carrier absorption [PDF]

, 1983
The possibility of phononless free-carrier absorption in quantum well heterojunction superlattices was investigated. Order of magnitude calculation showed that the absorption coefficient was significantly enhanced over the phonon-assisted process ...
Chiu, L. C., Margalit, S., Smith, J. S., Yariv, A.   +3 more
core   +1 more source

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