Results 41 to 50 of about 1,030 (179)

Experimental Study of the Sound Emission Pattern Based on Acoustic Characteristics in Typical Industrial Manufactories in Hamadan, Iran [PDF]

open access: yesMuhandisī-i bihdāsht-i ḥirfah/ī, 2023
Background and Objective: Noise pollution inside buildings is caused by frequent sound reflection from their inner surfaces. The purpose of this study is to experimentally study the sound emission pattern based on acoustic characteristics in typical ...
Seyedeh Elahe Hosseini   +3 more
doaj  

Hygrothermal Aging and Decoupled Axial‐Radial Compressive Failure Mechanisms in Glass Fiber Reinforced Epoxy Filament‐Wound Composite Tubes

open access: yesPolymer Composites, EarlyView.
Composite cylinder under axial and radial compression. ABSTRACT This study examines the hygrothermal degradation of filament‐wound glass fiber‐reinforced epoxy composite tubes designed for application as liners in oil and gas systems, focusing on their response under axial or radial compression.
Anderson L. dos Santos   +3 more
wiley   +1 more source

Generating Artificial Reverberation via Genetic Algorithms for Real-Time Applications

open access: yesEntropy, 2020
We introduce a Virtual Studio Technology (VST) 2 audio effect plugin that performs convolution reverb using synthetic Room Impulse Responses (RIRs) generated via a Genetic Algorithm (GA).
Edward Ly, Julián Villegas
doaj   +1 more source

Pengukuran Karakteristik Akustik pada Auditorium FTI Universitas Kristen Satya Wacana Berbasis Bakuan ISO 3382-2009:2. [PDF]

open access: yes, 2019
Auditorium merupakan tempat menyelenggarakan berbagai kegiatan baik yang berkarakter wicara maupun musik. Untuk mengetahui kualitas akustik dari Auditorium FTI diperlukan pengukuran pada parameter objektif akustik ruang yaitu background noise level ...
Mangunjudo, Bima Narasatwika
core  

تأثیر مجموعات المکتبة المرکزیة بجامعة القاهرة فى البحث العلمى فى تخصص المکتبات والمعلومات : دراسة تحلیلیة [PDF]

open access: yesالمجلة الدولية لعلوم المكتبات والمعلومات, 2019
The study aims to verify the impact of the central library collection at CairoUniversity in preparing theses in the field of library, Archives and informationtechnology based on ISO standard No. 16439 dated 2014 concerning the impactof libraries.
د.سرفیناز أحمد حافظ
doaj   +1 more source

Estudio comparativo de los parámetros acústicos de la norma UNE-EN ISO 3382-1 medidos con fuente puntual y con el sistema de refuerzo sonoro en salas de cine [PDF]

open access: yes, 2014
El objetivo principal de este trabajo fin de máster es la obtención de los parámetros acústicos, que especifica la norma UNE-EN ISO 3382-1, con una fuente omnidireccional y con cada uno de los canales del sistema de refuerzo sonoro (Izquierdo, Central, Derecho, Surround Izquierdo y Surround Derecho) en una sala de cine, así como la comparación de los ...
Alves Santos, Helena
openaire   +2 more sources

Fully Printed Piezoelectric Polymer Loudspeakers with Enhanced Acoustic Performance

open access: yesAdvanced Engineering Materials, Volume 21, Issue 11, November 2019., 2019
Sandwich‐layer structures of poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS)‐ poly(vinylidene fluoride‐trifluoroethylene) (P(VDF‐TrFE))‐PEDOT:PSS are fully printed on paper substrates. Dielectric spectroscopy demonstrates a fall‐off frequency of about 8 kHz. The P(VDF‐TrFE) layer is poled with a sufficiently high electric field.
Xunlin Qiu   +5 more
wiley   +1 more source

Suppression Characteristics and Mechanism of MCA@ADP‐MMT Composite Powder on Aluminum Powder Explosion

open access: yesSafety Science and Technology, Volume 1, Issue 1, March 2026.
MCA@ADP‐MMT can effectively slow down the combustion of Al powder and suppress the occurrence of explosion through the synergistic effect of multiple suppression mechanisms including dilution, quenching, and barrier. ABSTRACT The advancement of precision machining technology has heightened safety concerns regarding aluminum (Al) powder explosions in Al
Haiyan Chen   +5 more
wiley   +1 more source

The Role of Overflow on the Mechanical Propert ies of 3D Printed PLA [PDF]

open access: yesArchives of Metallurgy and Materials
3D printing is a technology used on an ever-increasing scale, which makes it easier to obtain parts with complex geometry. The printing process is very complex because, in addition to the variables introduced by the various materials that are used, there
M. Axinte   +3 more
doaj   +1 more source

Displacement Risk Assessment of Substation Frameworks Under Fire Conditions

open access: yesElectrical Materials and Applications, Volume 3, Issue 1, January/December 2026.
The fire scenario of the substation framework is that the steel pipe surface is exposed to fire under the ISO 834 standard heating curve conditions and the temperature field of the substation truss structure has a significant impact on its thermal response during the fire.
Hui Zhu, Yu Xia, Mingqiang Yan, Jun Ji
wiley   +1 more source

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