Results 141 to 150 of about 3,916,431 (304)

A Comparative Sound Intensity Method for Measuring the Increase in Sound Insulation of Small Acoustic Metamaterial Samples

Sensors
This paper presents a method for determining the reduction in noise transmission provided by small samples of acoustic metamaterials, based on comparative sound intensity measurements.
Polaczek Agata, Baruch-Mazur Katarzyna, Ziarko Bartłomiej, Lewińska-Maresca Mirosława, Młynarczyk Dorota, Dusza Katarzyna   +5 more
doaj   +1 more source

Enhanced Ultrasound Transmission Through Aberration Layers Using Space‐Coiling Acoustic Metamaterials

Advanced Engineering Materials, EarlyView.
Enhancing ultrasound transmission through an aberration layer exhibiting mismatched impedance with the surrounding medium possesses great implications in imaging and treatment. In this study, we show that a space‐coiling acoustic metamaterial with judiciously tailored structural profile can help improve impedance matching.
Maral Ghanami, Hengzhe Ren, Erqian Dong, Ashkan Ghanbarzadeh‐Dagheyan, Chen Shen   +4 more
wiley   +1 more source

Monte Carlo model of the uncertainty of SEA loss factors [PDF]

, 2010
Finite Element Methods are widely used to model vibro-acoustic systems, but as the modal density becomes higher this type of model becomes inaccurate and impractical.
Fernandez, M.J., Chimeno Manguan, Marcos, López Díez, Jesús, Simon, F.   +3 more
core  

“ad explorandum nova utilia et necessaria”: la raccolta e il ruolo delle nova a Bologna (secoli XIII e XIV)

, 2023
The paper focuses on the relationship of the Bolognese government with information in the late thirteenth and early fourteenth centuries. By analysing a series of unedited documents preserved in the State Archive of Bologna, the article highlights how ...
Edward Loss
core  

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

Advanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng, Qian Yao, Yanan Sun, Hongyu Lv, Zhongchao Bai, Guoliang Zhang, Nana Wang, Jian Yang   +7 more
wiley   +1 more source

Sound Transmission Loss of a Sandwich Plate with Adjustable Core Layer Thickness. [PDF]

Materials (Basel), 2020
Ehrig T, Dannemann M, Luft R, Adams C, Modler N, Kostka P.   +5 more
europepmc   +1 more source

Traumatic loss and spiritual crisis in adolescence

, 2006
This article extends Grof‘s (1985, 1993,1998 & 2000) work on psycho-spiritual transformation by discussing whether adolescents can experience ‘spiritual emergency’ (SE).
Bray, Peter
core  

All‐in‐One Analog AI Hardware: On‐Chip Training and Inference with Conductive‐Metal‐Oxide/HfOx ReRAM Devices

Advanced Functional Materials, EarlyView.
An all‐in‐one analog AI accelerator is presented, enabling on‐chip training, weight retention, and long‐term inference acceleration. It leverages a BEOL‐integrated CMO/HfOx ReRAM array with low‐voltage operation (<1.5 V), multi‐bit capability over 32 states, low programming noise (10 nS), and near‐ideal weight transfer.
Donato Francesco Falcone, Victoria Clerico, Wooseok Choi, Tommaso Stecconi, Folkert Horst, Laura Bégon‐Lours, Matteo Galetta, Antonio La Porta, Nikhil Garg, Fabien Alibart, Bert Jan Offrein, Valeria Bragaglia   +11 more
wiley   +1 more source

KUALITAS AKUSTIK PANEL DINDING BERBAHAN BAKU JERAMI

Dimensi: Journal of Architecture and Built Environment, 2008
A series of study to explore possibility in using paddy-straw as main material to construct cheap and high quality panels has been developed. Prior to this study, laboratory research to examine strength of compression and tensile of the panels have been ...
Christina E. Mediastika
doaj  

Diffraction of Sound Waves by a Periodic Array of Impedance Screens

Acoustics
Air-penetrating and noise-canceling constructions are required for numerous noise control issues. High ventilation performance conflicts with effective sound insulation, and vice versa.
Nikolay Kanev
doaj   +1 more source