Results 1 to 10 of about 5,202,506 (244)
Absorption coefficient of water vapor across atmospheric troposphere layer [PDF]
Heliyon, 2019 Absorption coefficient of water vapor proposed to be responsible for an increase in temperature in the troposphere layer with altitude less than 10 km is systematically presented in this work. Since global warming plays an important role in affecting the
Peng-Sheng Wei +6 more
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Absorption coefficient of carbon dioxide across atmospheric troposphere layer [PDF]
Heliyon, 2018 Absorption coefficient affected by carbon dioxide concentration and optical path length responsible for temperature or global warming across the troposphere layer, which is less than the altitude of 10 km in the atmosphere, is systematically presented in
Peng-Sheng Wei +6 more
doaj +3 more sources
Sound-Absorption Coefficient of Bark-Based Insulation Panels. [PDF]
Polymers (Basel), 2020 The objective of this study was to investigate the sound absorption coefficient of bark-based insulation panels made of softwood barks Spruce (Picea abies (L.) H.
Tudor EM +5 more
europepmc +2 more sources
Study of the absorption coefficient of graphene-polymer composites. [PDF]
Sci Rep, 2018 In this work, we have prepared a series of polydimethylsiloxane (PDMS) composites containing various graphene flakes loadings (0.02–2 wt%), and their broadband optical properties are being investigated.
Zeranska-Chudek K +7 more
europepmc +2 more sources
Light absorption coefficient of an ordered array of spherical quantum dot chains [PDF]
Condensed Matter Physics, 2017 We considered intersubband electron transitions in an array of one-dimensional chains of spherical quantum dots in the GaAs/Al_xGa_{1-x}As semiconductor system.
V.I. Boichuk +2 more
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Investigation of the Effect of Non-Flat Surfaces on the Performance of Perforated Acoustic Absorber [PDF]
Archives of Acoustics, 2023 In order to investigate the effect of the surface shape on the performance of perforated panels, three non-flat shapes were considered for perforated panel with their absorption performance compared with the usual shape of the (flat) perforated panel. In
Zahra Hashemi +2 more
doaj +1 more source
Heliyon, 2022 Noise is one of the most harmful factors in the work environment, which is very important to control. There are various techniques to achieve this goal. One of the most important of them is the use of noise absorbers.
Ashkan Jafari malekabad +5 more
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Theoretical assessment of sound absorption coefficient for anisotropic nonwovens [PDF]
QScience Connect, 2012 The anisotropy factor as a function of fiber arrangement, fiber fineness and sample thickness has been derived from the theories of soundwave transformation due to phase changing.
Klara Kalinova
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Absorption coefficient measurement of bremsstrahlung radiation in nano composite [PDF]
Engineering and Technology Journal, 2015 In The present work has been prepare samples of polymer and the formation of composite material at different rates (20%, 50% &70%) of nano lead to clarify the difference in the spectrum absorption bremsstrahlung rays through the process of exponential ...
Noor M. Aowd, Hayder S.Hussain
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Sound Absorption and Diffusion by 2D Arrays of Helmholtz Resonators
Applied Sciences, 2020 We report a theoretical and experimental study of an array of Helmholtz resonators optimized to achieve both efficient sound absorption and diffusion. The analysis starts with a simplified 1D model where the plane wave approximation is used to design an ...
Iván Herrero-Durá +5 more
doaj +1 more source