Results 81 to 90 of about 14,726 (253)

ESTIMATING SOUND ABSORPTION IN COEFFICIENT OF PRAYERS IN MOSCQUES

Akustika, 2019
The article deals with analysing sound absorption of prayers in big congregational mosques. Peculiarity of sound absorption measurement in prayer halls is linked with the capability of mosque worshipers to pray in different poses with diverse arrangements as opposed to the traditional halls where people usually sit in chairs.
Vasily Aleshkin, Christofor Schirjetsky, Anton Subbotkin   +2 more
openaire   +1 more source

Hybrid Spring‐Coupled Broadband Energy Harvester Integrated with CuSCN Functionalized Triboelectric Vibration Sensor for Self‐Sustainable Vehicular IoTs

Advanced Science, EarlyView.
A self‐sustainable vehicular vibration and indoor environment monitoring IoT platform is developed which integrates a hybrid spring‐coupled broadband energy harvester with a machine learning‐assisted PAN‐CuSCN nanofiber triboelectric vibration sensor for subtle‐to‐wide‐range vibration detection and road/speed classification.
Trilochan Bhatta, Gagan Bahadur Pradhan, Shital Sharma, MoonSeong Jo, Aklesh Teli, Hochan Chang, Jae Yeong Park   +6 more
wiley   +1 more source

Sound‐Insulation Performance of Polylactic Acid Parts 3D Printed by Fused Filament Fabrication with Functionally Graded Porous Structure for Effective Noise Reduction

Macromolecular Materials and Engineering
The 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, Taher Azdast, Rezgar Hasanzadeh, Milad Moradian, Peyman Mihankhah, Asghar Rasouli   +5 more
doaj   +1 more source

Atomic Scale Control of Thermal Conductivity in LaMnO3/SrMnO3 Superlattices

Advanced Electronic Materials, EarlyView.
Interface‐dominated cross‐plane thermal transport in [(LaMnO3)m/(SrMnO3)n]10 superlattices can be controlled by the octahedral rotation/tilt angle φOOR of the MnO6 octahedra, which as well is controlled by the “m/n” ratio. ABSTRACT We report atomic scale structure and phonon thermal transport in (LaMnO3)m/(SrMnO3)n/SrTiO3(100) superlattices (LMO/SMO ...
H. Ulrichs, V. Roddatis, U. Roß, J. P. Bange, D. Meyer, S. Lopatin, V. Radisch, D. Metternich, I. V. Maznichenko, S. Ostanin, R. Egoavil, I. Lazić, V. Moshnyaga   +12 more
wiley   +1 more source

Behavioral Coping With Food Price Inflation: Patterns Among U.S. Households

Applied Economic Perspectives and Policy, EarlyView.
ABSTRACT Recent food price inflation has placed substantial pressure on household budgets, food security, and mental well‐being. Using Household Pulse Survey data, we combine k‐modes clustering and Double Machine Learning to identify distinct household coping groups and examine differences in how households respond to rising food prices across groups ...
Yuxiang Zhang, Yizao Liu
wiley   +1 more source

Improvement of Sound-Absorbing Dips in Nonwoven Fabric Sheet with Back Air Space: Division of Back Air Space by Additional Nonwoven Fabric Sheet

Acoustics
This study was conducted to improve the sound absorption dips in nonwoven fabric sheets with a back air space. Considering the particle velocity distribution in the back air space, another nonwoven sheet was added to divide the air space into layers. The
Shuichi Sakamoto, Kodai Sato, Gaku Muroi, Yusuke Nakao, Kaito Kuboki, Nobuhito Taguchi   +5 more
doaj   +1 more source

A new simple method for determining the sound absorption coefficient

MATEC Web of Conferences, 2018
Taking into account the influence of the length and diameter of the impedance tube on the process of decay of sound waves, a new study of sound propagation in an impedance tube is presented, on the basis of which it is easier to determine the sound ...
Chelidze Merab
doaj   +1 more source

The Geography of Success: A Spatial Analysis of Export Intensity in the Italian Wine Industry

Agribusiness, EarlyView.
ABSTRACT This paper investigates the paradox of how Italy's fragmented, SME‐dominated wine industry achieves global export success. Moving beyond purely firm‐centric explanations, we test whether export intensity is spatially dependent, clustering geographically in regional ecosystems.
Nicolas Depetris Chauvin, Jonas Di Vita
wiley   +1 more source

Electrospinning nanofilms to improve sound absorption of flexible or rigid porous material

Results in Engineering
To further enhance the sound absorption capabilities of porous materials, we employed electrospinning technology to prepare electrospinning nanofilms using polyvinyl butyral solution.
Nansha Gao, Zhicheng Zhang, Jiacheng Guo, Zhenhua Wang, Xiao Liang, Guang Pan   +5 more
doaj   +1 more source

Pesticide MRLs as Trade Barriers: Evidence From Vietnam's Coffee and Rice Exporters

Agribusiness, EarlyView.
ABSTRACT As tariffs have declined globally through bilateral and regional trade agreements, food safety standards have emerged as significant determinants of agricultural trade flows. This study examines the impact of maximum residue limits (MRLs) for five pesticides—Azoxystrobin, Chlorpyrifos, Chlorantraniliprole, Clothianidin, and Cyhalothrin—on ...
Nhat Mai Nguyen, Hoa‐Thi‐Minh Nguyen, Kaliappa Kalirajan   +2 more
wiley   +1 more source