Results 51 to 60 of about 444,257 (298)
Acoustic Properties of Wood [PDF]
The Journal of the Acoustical Society of America, 1969 A square redwood plate was progressively cut, removing crossgrain and longitudinal-grain strips, with simultaneous acoustic measurements made of strips (beams) and plate. Findings show that regions near the ends of a free beam or plate do not contribute to losses.
Yoshimasa Sakurai, Eugen J. Skudrzyk
openaire +1 more source
Two-fluid hydrodynamic model for semiconductors [PDF]
, 2018 The hydrodynamic Drude model (HDM) has been successful in describing the optical properties of metallic nanostructures, but for semiconductors where several different kinds of charge carriers are present, an extended theory is required.
Maack, Johan R. +2 more
core +3 more sources
Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials
Advanced Engineering Materials, EarlyView.Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai +2 more
wiley +1 more source
Journal of Natural Fibers, 2022 Although some studies have been conducted to show how natural fibers can replace synthetic materials, the use of many natural fibers is still limited.
Hasan Koruk
doaj +1 more source
Biology and Life Sciences Forum, 2023 In this paper, a study to determine the acoustic properties of Chihuahua, Manchego, and panela cheeses is carried out by applying acoustic spectroscopy in the ultrasound spectrum.
Raúl Alberto Reyes-Villagrana +4 more
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Acoustic Properties of La3Ga5.3Ta0.5Al0.2O14 Crystal
Izvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki = Materials of Electronics Engineering, 2015 Development and search for new advanced materials of the lanthanum gallium silicate group with unique thermal properties is of great importance for the development of acoustoelectronics based on volume and surface acoustic waves. The processes of surface acoustic wave excitation and propagation in the La3Ga5.3Ta0.5Al0.2O14 crystal was studied using a ...
Dmitry V. Roshchupkin +4 more
openaire +3 more sources
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
Compressional wave dispersion due to rock matrix stiffening by clay squirt flow
Geophysical Research Letters, 2016 The standard Biot‐Gassmann theory of poroelasticity fails to explain strong compressional wave velocity dispersion experimentally observed in 12 tight siltstone with clay‐filled pores.
Jing Ba +3 more
doaj +1 more source
A Test Method for Acoustic Emission Properties of Natural Cellulose Fiber-Reinforced Composites
Applied Sciences, 2021 To test the acoustic performance of fiber-reinforced composites for replacing wood, an acoustic vibration test method is developed. For evaluation of the test method, composites are manufactured using hemp and ramie embedded in epoxy, through vacuum ...
Fanxizi Liu +5 more
doaj +1 more source
Hemispheric specialization in selective attention and short-term memory: a fine-coarse model of left- and right-ear disadvantages. [PDF]
, 2013 Serial short-term memory is impaired by irrelevant sound, particularly when the sound changes acoustically. This acoustic effect is larger when the sound is presented to the left compared to the right ear (a left-ear disadvantage).
John E. Marsh +4 more
core +2 more sources