Results 81 to 90 of about 4,515 (260)

Low acoustic impedance arc-shaped chiral metamaterials for low-frequency and broadband underwater sound insulation

open access: yesMaterials & Design
This work proposes an arc-shaped chiral metamaterial (ACM) for low-frequency underwater sound insulation. The equivalent parameters of the designed arc-shaped chiral lattice (ACL) in the metamaterial are derived and evaluated using homogenization method.
Chao Wang   +6 more
doaj   +1 more source

Effect of Urethane Foam Cushioning on Structure-Borne Sound Transfer by a Slab with Panel Flooring

open access: yesArchives of Acoustics, 2015
Urethane foam mattresses are commonly used as cushioning when placing panel flooring on the floor slab of a building. Urethane foam consists of elastic fibrefibres with pores.
RuiLin MU   +2 more
doaj   +1 more source

Sound insulation properties of materials and methods used in civil engineering

open access: yesE3S Web of Conferences
The issue of sound insulation in enclosing structures continues to be extremely prevalent in both newly constructed and exploited buildings. Standard fencing solutions frequently employ contemporary wall materials without the additional sound insulation that is required.
Yerzatova Merey   +4 more
openaire   +2 more sources

Sports Activity Recognition Using Textile‐Based Sensor Fusion and Complex‐Valued Residual Convolutional Neural Networks

open access: yesAdvanced Intelligent Systems, EarlyView.
Motion artifacts in electrocardiographic signals, conventionally dismissed as noise, are shown to encode discriminative activity information. A smart t‐shirt fusing textile strain sensors with textile ECG electrodes, processed through a complex‐valued residual network, recognizes 12 sport activities.
Nada Al‐azzawi   +4 more
wiley   +1 more source

Modern means of protection from noise applied in building envelop [PDF]

open access: yesСтроительство уникальных зданий и сооружений, 2015
The problem of noise pollution becomes more and more urgent. In large and small cities, we are seeing an active traffic, construction works, repairs and other industrial and domestic activities of people. This exerts a load on people. Noise outside the
Darya Vyacheslavovna Glushko   +2 more
doaj  

Experimental Characterization of Thermal, Acoustic, Magnetic, and Electrical Properties of Additive Manufactured Composites Reinforced With Ceramic Powders for Robotic Arms

open access: yesJournal of Applied Polymer Science, Volume 142, Issue 16, April 20, 2025.
ABSTRACT An extensive experimental analysis was conducted to assess the thermal, acoustic, magnetic, and electrical properties of composite materials reinforced with varying ratios of silicon carbide (SiC) and alumina (Al₂O₃) powders, with a focus on enhancing the functionality of robotic arms.
Merdan Özkahraman   +2 more
wiley   +1 more source

Two‐Dimensional van der Waals Antiferromagnets: Fabrication, Probes, Control, and Applications

open access: yesAdvanced Physics Research, EarlyView.
Two‐dimensional van der Waals antiferromagnets are emerging as versatile platforms for spintronic, optoelectronic, and quantum devices. This review summarizes recent progress in their fabrication, magnetic characterization, fields, interfacial engineering, chemical modification, and representative applications.
Huangyu Wu   +10 more
wiley   +1 more source

Optimization Strategy Research of High-speed Train Roof Acoustic Hood

open access: yesChengshi guidao jiaotong yanjiu
ObjectiveWith the rapid development of high-speed railways, the train running speed increases constantly, but the issue of running noise has become increasingly prominent.
Jie ZHENG   +3 more
doaj   +1 more source

Sound-Absorbing, Thermal-Insulating Material Based on Poly(methylsiloxane) Xerogel and Cellulose Nanofibers

open access: yesApplied Sciences
The automotive industry needs to improve energy efficiency rapidly to achieve carbon neutrality while creating a safe, secure, and comfortable driving environment for customers. Porous sound-absorbing materials and porous thermal insulators are typically
Daiji Katsura   +4 more
doaj   +1 more source

Physical Properties of Transition Metal Hydride Superconductors Mg2TmH6 (Tm = Rh, Pd, Ir, Pt) by First‐Principles Calculations

open access: yesAdvanced Physics Research, EarlyView.
The electronic band structure determines all the charge transport properties of crystalline solids. It also controls the optical response of the material. Bonding characters are strongly influenced by the band structure. The band structures of Mg2TmH6 (Tm = Rh, Pd, Ir, Pt) compounds shown above confirm their metallic nature.
Md Ashraful Alam   +3 more
wiley   +1 more source

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