Results 31 to 40 of about 399,393 (305)
Research on acoustic conduction mechanism of underwater acoustic channel based on metamaterials
AIP Advances, 2020 In underwater acoustic communication, there are problems of low transmission efficiency, severe loss, and inaccurate point-to-point transmission. To realize the efficient transmission of underwater acoustic communication based on finite element analysis,
Xinsa Zhao +3 more
doaj +1 more source
Determination of Caries Lesion Activity: Reflection and Roughness for Characterization of Caries Progression [PDF]
, 2018 Used by permission. © Operative Dentistry, Inc. Transmission or reproduction of protected items beyond that allowed by fair use requires the written permission of Operative Dentistry, Inc.Caries lesion progression is difficult to determine with visual ...
Ando, Masatoshi +2 more
core +1 more source
Structural Porosity and Low Mineral Density in Enamel Rods Drive Molar Incisor Hypomineralisation
Advanced Functional Materials, EarlyView.This study uses advanced imaging modalities on multiple length scales to show that molar‐incisor hypomineralization does not present as a locally homogeneous pathology. Instead, microstructural defects, characterized through non‐mineralized, protein‐rich sheaths and an altered mineral structure in between prism rods, resulting in local differences in ...
Katharina Jähn‐Rickert +14 more
wiley +1 more source
Sound transmission loss optimization of clamped double-panels
Journal of Low Frequency Noise, Vibration and Active ControlThe panel cavity structure is one of the key components of the aircraft (vehicle) body and is among the main noise transmission pathways. Based on the modal superposition and Galerkin method, this paper realizes the theoretical model of sound insulation ...
Yumei Zhang +6 more
doaj +1 more source
REM: International Engineering JournalIndustrialized closing systems appear as rational solutions in steel-structured construction. These closing systems, consisting of multi-layered panels, have been applied in projects where it is intended to obtain a high sound transmission loss without ...
Rovadávia Aline de Jesus Ribas +1 more
doaj +1 more source
Comparasion of prediction and measurement methods for sound insulation of lightweight partitions [PDF]
Facta Universitatis. Series: Architecture and Civil Engineering, 2012 It is important to know the sound insulation of partitions in order to be able to compare different constructions, calculate acoustic comfort in apartments or noise levels from outdoor sources such as road traffic, and find engineer optimum solutions ...
Praščević Momir +2 more
doaj +1 more source
Mode-matching without root-finding: Application to a dissipative silencer [PDF]
, 2006 This article presents an analytic mode-matching approach suitable for modelling the propagation of sound in a two-dimensional, three-part, ducting system.
Jane B. Lawrie, Mechel F. P., Ray Kirby
core +2 more sources
Advanced Functional Materials, EarlyView.A pixelation‐free, monolithic iontronic pressure sensor enables simultaneous pressure and position sensing over large areas. AC‐driven ion release generates spatially varying impedance pathways depending on the pressure. Machine learning algorithms effectively decouple overlapping pressure–position signals from the multichannel outputs, achieving high ...
Juhui Kim +10 more
wiley +1 more source
Study of high frequency acoustic directional transmission model based on graphene structure
AIP Advances, 2020 The directional transmission of high-frequency sound waves is of great significance to the development of underwater communication and cell photoacoustic detection.
Peng Yang +3 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Automat optical inspection (AOI) techniques in semiconductor fabrication can be leveraged in battery manufacturing, enabling scalable detection and analysis of electrode‐ and cell‐level imperfections through AI‐driven analytics and a digital‐twin framework.
Jianyu Li, Ertao Hu, Wei Wei, Feifei Shi
wiley +1 more source