Results 31 to 40 of about 32,369 (300)

Pembuatan Alat Impedance Tube dan Simulasi Pengukuran Koefisien Serap Menggunakan Software MATLAB R2013A

open access: yesPositron, 2017
Telah dilakukan pembuatan alat impedance tube sesuai dengan standar ISO 10534-2: 1998 [2] yaitu dimensi tabung 10 cm, ketebalan tabung 5 mm, jarak antara sumber suara dengan microphone terdekat 70 cm, jarak antara sampel dengan microphone terdekat 21 cm,
Azis Eko Prakoso   +5 more
doaj   +1 more source

Sound absorption coefficient measurement and correction of acoustic coating based on impedance experiment

open access: yesZhongguo Jianchuan Yanjiu
ObjectiveAs specific and demanding requirements are imposed by measuring the impedance of the anechoic coatings on the hull surface of an underwater vehicle using the traditional water-filled tube experiment, a method of sound absorption coefficient ...
Fan ZHANG   +3 more
doaj   +1 more source

Narrow-band impedance of a round metallic pipe with a low conductive thin layer

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2014
The new traveling wave structure with a single synchronous mode resonantly excited by the relativistic charge is presented. The structure is composed of a metallic tube with an internally coated low conductive thin layer.
M. Ivanyan   +3 more
doaj   +1 more source

Studies on the Effect of Hybridization on Sound Insulation of Coir-banana-polypropylene Hybrid Biocomposites

open access: yesJournal of Natural Fibers, 2022
Natural fiber-based hybrid composites have been explored in this study as possible structural materials. Detailed investigation of sound insulation property of a series of hybrid and nonhybrid composites has been carried out using impedance tube having ...
Vikas Kumar Singh, Samrat Mukhopadhyay
doaj   +1 more source

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Impedance-Tube Technique for Determining the Fatigue Properties of Compliant Tubes [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1964
A laboratory technique has been developed that permits the investigation of the structural integrity of compliant tubes. This technique involves an electrodynamic shaker and an impedance tube filled with water. Standard test procedures to check the dynamic response and fatigue life use sections of specimens and/or full-scale tubes excited by a shaker ...
B. J. Moskal, J. P. Frederick
openaire   +1 more source

Analytical Expression for Sound Transmission Loss Calculation: An Improvement to the Existing Method after Singh and Katra [PDF]

open access: yes, 2009
An analytical expression for measuring of sound transmission loss (TL) has been developed by using two microphones, an impedance tube and an impulse sound source as a proposed improvement to the existing procedure after Singh and Katra (1978).
Yahya, Iwan
core  

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

open access: yesFEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Influence of Fabric Folding Geometry on the Sound Absorption

open access: yesJournal of Natural Fibers, 2022
Textile materials used without any other structures show low absorption throughout the operating frequency range, and they are currently used for interior decoration.
Roberto Atiénzar-Navarro   +4 more
doaj   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

open access: yesFEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure   +3 more
wiley   +1 more source

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