Results 61 to 70 of about 39,171 (345)

Development of non-woven from recycled fabric selvedge wastes for functional sound absorption

open access: yesInternational Journal of Sustainable Engineering, 2022
Reasons for recycling of waste include conservation of resources, reduction in the need for landfills, paying associated tipping fees and provision of low-cost raw materials for products.
Temesggen Feleke Fera   +2 more
doaj   +1 more source

Acoustic Absorption Coefficients at High Frequencies [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1949
The measurement of the acoustic absorption coefficient by a steady state method was carried out at frequencies of 9, 20, and 30 kc for seven different materials. This involved the construction of a sound chamber with facilities for creating a diffuse sound field and a sample area where materials could be mounted.
openaire   +2 more sources

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

open access: yesAdvanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana   +2 more
wiley   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

Utilization and Study of Raw Groundnut Shell as a Source of Sound Absorbing Material

open access: yesJournal of Natural Fibers, 2022
Natural biodegradable materials have the potential of an alternative traditional sound-absorbing material. These materials have the advantages of low cost, light in weight, easily available, eco-friendly, and nonpolluting.
Ulhas A. Malawade   +3 more
doaj   +1 more source

Acoustic Coatings—A Discreet Way to Control Acoustic Environment

open access: yesFrontiers in Built Environment, 2021
Acoustic comfort is directly related to enhanced well-being and performance of people. A typical challenge faced by architects and acousticians is to achieve adequate acoustics while maintaining the aesthetics of the space and reducing the visual aspects
Jose Cucharero   +5 more
doaj   +1 more source

COMSOL’s New Thermoacoustics Interface and Computationally Efficient Alternative Formulations for FEM [PDF]

open access: yes, 2011
Three efficient alternatives to the model in COMSOL’s thermoacoustics interface are presented. The higher efficiency of these models are explained from theory and are demonstrated by means of two ...
Kampinga, W.R., Wijnant, Y.H.
core   +2 more sources

Enhanced Electromechanical Response in 1D Hybrid Perovskites: Coexistence of Normal and Relaxor Ferroelectric Phases

open access: yesAdvanced Functional Materials, EarlyView.
The dynamic polarization reversal of coexisting normal and relaxor ferroelectrics in 1D TMAPbI₃ (tetramethylammonium, TMA) is deciphered through combined experimental and theoretical approaches. By bridging atomic‐scale motion, macroscopic polarization switching, and depolarization effects, a universal methodology is established to engineer next ...
Chen Xue   +8 more
wiley   +1 more source

3D‐Printed Lattice Structures for Sound Absorption: Current Progress, Mechanisms and Models, Structural‐Property Relationships, and Future Outlook

open access: yesAdvanced Science
The reduction of noises, achieved through absorption, is of paramount importance to the well‐being of both humans and machines. Lattice structures, defined as architectured porous solids arranged in repeating patterns, are emerging as advanced sound ...
Xinwei Li   +6 more
doaj   +1 more source

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