Results 141 to 150 of about 118,824 (293)

Sound Absorption Properties of Shredded Paper Wastes as Indoor Building Sound Absorber

open access: yesBioResources
The sound absorption properties of shredded paper wastes (SPW) were evaluated. Two impedance tubes (large and small) were used to measure the sound absorption coefficient of different thicknesses of SPW sound-absorber (20, 40, 60, 80, and 100 mm). As the
Eun-Suk Jang, Hee-Jun Park
doaj  

Sound Absorption Characteristics of Unsaturated Porous Material Calculated by Modified Transfer Matrix Method

open access: yesBuildings
Porous materials have emerged as one of the most widely employed sound-absorbing materials in practical applications, owing to their excellent sound absorption properties and lightweight nature.
Yiguo Yin, Wei Guan
doaj   +1 more source

Application of Viscothermal Wave Propagation Theory for Reduction of Boundary Layer Induced Noise [PDF]

open access: yes, 2003
Boundary layer induced noise, i.e. noise inside the aircraft resulting from the turbulent boundary layer enclosing the fuselage, is known to dominate air-cabin noise at cruise conditions.
Boer, A. de   +2 more
core   +1 more source

Effect of carbamazepine on the pharmacokinetics of vepdegestrant, a PROteolysis TArgeting Chimera estrogen receptor degrader, in healthy adults

open access: yesBritish Journal of Clinical Pharmacology, EarlyView.
Aim To evaluate the effects of carbamazepine, a strong cytochrome P450 (CYP)3A4 inducer, on the pharmacokinetics and safety of vepdegestrant, a PROteolysis TArgeting Chimera estrogen receptor degrader. Methods This was a phase 1, open‐label, fixed‐sequence, two‐period study in healthy adult participants.
Hechuan Wang   +7 more
wiley   +1 more source

The prediction of the diffuse field sound absorption of perforated panel systems [PDF]

open access: yes
This paper studies the diffuse field sound absorption coefficient of a system consisting of a rigid perforated panel with a thin porous woven/matted material glued to its back, which is placed in front of an air cavity with a rigid backing.
Davy, J, Larner, D
core  

RETRACTED: Learner emotions and performance in hypercasual VR games with adaptive AI difficulty

open access: yesBritish Educational Research Journal, EarlyView.
Abstract Hypercasual virtual reality games (HVRGs) are widely regarded as cost‐effective tools for rapid skill acquisition, yet the mechanisms that optimise their effectiveness and user acceptance remain insufficiently explored. This mixed‐methods empirical study investigates how playful emotions, characterised by engagement, enjoyment and anxiety ...
Zeeshan Ahmed, Faizan Ahmad, Chen Hui
wiley   +1 more source

Green Innovation and Firm Efficiency: The Role of Institutional Quality in Italian High‐Tech Manufacturing Sectors

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT The aim of this research is to verify whether institutional quality affects the relationship between green innovation and firm efficiency within the high‐tech manufacturing sectors. To estimate jointly the parameters of a stochastic frontier and the coefficients of a model explaining technical inefficiency, we employed the one‐step estimation ...
Mariarosaria Agostino   +2 more
wiley   +1 more source

Measurements of the Sound Absorption Coefficient of Auditorium Seats for Various Geometries of the Samples

open access: yesArchives of Acoustics, 2013
This paper presents the results of measurements of the sound absorption coefficient of auditorium seats carried out in the laboratory using two methods.
Jarosław RUBACHA   +2 more
doaj  

Theoretical Estimation of Wheat Straw Sound Absorption Coefficient Using Computed Tomography Images

open access: yesApplied Sciences
Wheat straw, which is a by-product of wheat production and has a tubular structure, is typically used for animal feed and compost. This study estimated the sound absorption coefficient of wheat straw based on cross-sectional computed tomography (CT ...
Shuichi Sakamoto   +4 more
doaj   +1 more source

Digital Transformation on Green Operational Performance: Evidence From the E‐Waste Firm's Perspective

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Digital transformation (DT) is increasingly recognised as essential for improving environmental performance in process‐intensive and hazardous sectors; however, the mechanisms by which digitalisation translates into green operational performance (GOP) and environmental accountability remain insufficiently investigated, particularly in ...
Amila Kasun Sampath Udage Kankanamge   +2 more
wiley   +1 more source

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