Results 111 to 120 of about 314,481 (350)
Absorption of sound in air below 1000 cps [PDF]
Absorption of sound in air measured for varying conditions of pressure, temperature, and ...
Harris, C. M., Tempest, W.
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The Resonator Banjo Resonator, part 2: What makes them really crack? [PDF]
, 2015 A simple experiment quantifies the difference between the sound production of a banjo with and without a resonator back. Driven by a small tweeter mounted inside the pot, for frequencies above about 4500 Hz, the produced external sound is 6 to 10 dB ...
Politzer, David
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Ultrasonic studies of the magnetic phase transition in MnSi
, 2008 Measurements of the sound velocities in a single crystal of MnSi were performed in the temperature range 4-150 K. Elastic constants, controlling propagation of longitudinal waves reveal significant softening at a temperature of about 29.6 K and small ...
A E Petrova +7 more
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Recent Advances on Thermochromic Inks for Security Applications
Advanced Materials Technologies, EarlyView.Thermochromic security inks have garnered interest in recent years as security elements for authentication, information encryption, and anti‐counterfeiting. This review outlines different types of thermochromic materials, how they have been developed as functional inks, and how advancements in property enhancement, sustainability, and printing ...
Duarte B. Oliveira +5 more
wiley +1 more source
BioResourcesThe use of perforated plywood as an interior architectural sound-absorbing material has been increasing in popularity in Korea. This study investigated the sound absorption performance of marketed birch (Betula platyphylla) plywood with circular and ...
Eun-Suk Jang +3 more
doaj +2 more sources
AUTEX Research Journal, 2017 A series of single-hole hollow polyester fiber (SHHPF) reinforced hydrogenated carboxyl nitrile rubber (HXNBR) composites were fabricated. In this study, the sound absorption property of the HXNBR/SHHPF composite was tested in an impedance tube, the ...
Jie Hong, Sheng Jiang, Xiong Yan
doaj +1 more source
, 2016 A necessary condition for the validity of the linear viscoelastic model for a (passive) polymeric cylinder with an ultrasonic hysteresis-type absorption submerged in a non-viscous fluid requires that the absorption efficiency is positive (Qabs > 0 ...
Fellah, Z. E. A., Mitri, F. G.
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Modulus‐Switchable Miniature Robots for Biomedical Applications: A Review
Advanced Robotics Research, EarlyView.Materials, robot designs, proof‐of‐concept functions, and biomedical applications of modulus‐switchable miniature robots. Miniature soft robots have shown great potential in biomedical applications due to their excellent controllability and suitable mechanical properties in biological environments.
Chunyun Wei, Yibin Wang, Jiangfan Yu
wiley +1 more source
Macromolecular Materials and EngineeringThe emergence of 3D printing technology has enabled the fabrication of absorbers with functionally graded (FG) porous structure and controlled porosity that can absorb sound waves across a broader frequency range.
Reza Navidpour +5 more
doaj +1 more source
Comment on the Coupling of Zero Sound to the $J=1^-$ Modes of $^3$He-B
, 1993 Features in the zero sound attenuation near the pair-breaking edge in superfluid $^3$He-B have been observed in large magnetic fields. Schopohl and Tewordt [{\sl J. Low Temp.
McKenzie, Ross H., Sauls, J. A.
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