Results 31 to 40 of about 1,553,727 (355)
Process system engineering in biodiesel production: a review [PDF]
, 2013 Biodiesel is fast becoming a popular alternative to fossil fuels, as it is natural, renewable and has low toxic emissions. Strategies that have been adopted to ensure continued growth of the biodiesel industry are policy development, reduction of ...
Kamarudin, S.K. +3 more
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Materials & Design, 2019 Reticulated foams are widely used in noise control applications. However, difficulties in controlling the foaming process makes it difficult to control the microstructure and consequently the absorption characteristics of stochastic foams.
Sagar Deshmukh +2 more
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Acoustical properties of double porosity granular materials [PDF]
, 2011 Granular materials have been conventionally used for acoustic treatment due to their sound absorptive and sound insulating properties. An emerging field is the study of the acoustical properties of multiscale porous materials.
Umnova, O, Venegas, R
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Acoustic Absorption of Natural Fiber Composites [PDF]
Journal of Engineering, 2016 The current study is a bibliographic observation on prevailing tendencies in the development of acoustic absorption by natural fiber composites. Despite having less detrimental environmental effects and thorough availability, natural fibers are still unsuitable for wide implementation in industrial purposes.
Hasina Mamtaz +3 more
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Sound Absorption of Hemp Fibers (Cannabis Sativa L.) Based Nonwoven Fabrics and Composites: A Review
Journal of Natural Fibers, 2022 Compared to the commonly used synthetic fibrous materials, natural fiber represents an eco-friendly solution in various engineering fields. Noise control is an important application of natural fibers due to the unique acoustic characteristics. Studies on
Jiangbo Liao +2 more
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Research Progress on Sound Absorption of Electrospun Fibrous Composite Materials
Nanomaterials, 2022 Noise is considered severe environmental pollutant that affects human health. Using sound absorption materials to reduce noise is a way to decrease the hazards of noise pollution.
Xiuhong Li +5 more
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Active diffusers : some prototypes and 2D measurements [PDF]
, 2005 Diffusing devices are used to improve room acoustics in a wide variety of applications. The dispersion generated by current diffuser technologies is often limited to mid-to-high frequencies because low-frequency diffusers are usually too large to be ...
Avis, MR, Cox, TJ, Xiao, L
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Performance of T-shape barriers with top surface covered with absorptive quadratic residue diffusers [PDF]
, 2008 A previous paper [Applied Acoustics 66 (2005) 709–730] has shown that adding a quadratic residue diffuser (QRD) to the top of a T-shape barrier can provide better barrier performance than an equivalent purely absorptive barrier.
Lam, YW, Monazzam, M
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Acoustic Characterization of Sugarcane Bagasse Particleboard Panels (Saccharum officinarum L) [PDF]
Materials Research, 2015 The use of sugarcane bagasse minimizes the environmental impact and contributes to the creation of a new product with low density, good sound absorption capacity and can improve the acoustic conditions of buildings.
Sylvia Thais Martins Carvalho +5 more
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Predicting theater chair absorption from reverberation chamber measurements - comment [PDF]
, 1993 The relationship between the measured acoustic absorption coefficient of an array of theater chairs and the ratio of the perimeter length to plan area of the array is considered.
Davies, WJ, Lam, YW, Orlowski, RJ
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