Results 31 to 40 of about 3,215 (291)
Archives of AcousticsThe article presents the results of comparative studies concerning the efficiency of systems aimed at minimising the acoustic nuisance of noise generated by the railway vehicle movement.
Grzegorz KLEKOT +3 more
doaj +1 more source
Advanced Healthcare Materials, EarlyView.The biomimetic nanoplatform IMNP (ETS1 pDNA/PBAE@ITP‐MM) undergoes targeted disassembly at inflammatory vascular sites to release the ETS1 plasmid (pETS1). This release initiates a cascade of effects that inhibit pathogenic pathways and support immune homeostasis. (Abbreviations: EndMT, endothelial‐to‐mesenchymal transition; EC, endothelial cell; TC, T
Feng Zhang +13 more
wiley +1 more source
A Novel Mode-Stirred Reverberation Chamber Design for 5G Millimeter Wave Bands
IEEE Access, 2021 A novel mode-stirred reverberation chamber (RC) is designed and analyzed for millimeter wave bands. The size of the proposed RC with dimensions of 0.9 m × 0.9 m × 1.1 m is suitable for user equipment (UE) tests.
Zhiqin Wang +4 more
doaj +1 more source
Advanced Materials, EarlyView.This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau +9 more
wiley +1 more source
Impacts of Absorber Loadings on Simulating the Multipath Channel in a Reverberation Chamber
International Journal of Antennas and Propagation, 2017 In reverberation chambers, the multipath channels with different delay characteristics can be generated by loading the chamber with different amounts of absorbers.
Xin Zhou +7 more
doaj +1 more source
On the Evaluation of the Shielding Effectiveness of Electrically Large Enclosure
Advanced Electromagnetics, 2012 The shielding effectiveness (SE) has become afundamental step in testing active or passive electricdevices. The Reverberating Chamber (RC) is a wellestablishedmethod for determining the SE since has theadvantage to expose the material to a more ...
A. Gifuni +6 more
doaj +1 more source
Acoustic tests of type KPF1 high-pressure external gear pumps
Technical Transactions, 2020 This article presents the results of testing the sound pressure level and sound power level of the experimental 3PW-KPF1-24-40-2-776 high-pressure gear pump. Acoustic tests were conducted in an reverberation chamber.
Osiński Piotr +3 more
doaj +1 more source
The study of the effectiveness of sound insulation of gypsum wall boards with “Shimast” coating [PDF]
MATEC Web of Conferences, 2020 The article presents the experimental studies of sound insulation of a single-layer barrier made of gypsum wall boards with a thin-layer coating. The coating consists of a viscous base and glass airless microgranules. The coating increases the efficiency
Totunov Semen +2 more
doaj +1 more source
Improving Ionic Conformality Across Polymer Electrolyte|Electrode Interfaces
Advanced Materials, EarlyView.Polymer electrolytes typically form physically intimate electrode interfaces but often fail to maintain continuous ionic pathways, critically limiting battery performance. Through strategic compositional design, this study introduces a molecular ionic composite electrolyte that effectively reduces interfacial ionic depletion, ensuring consistent ion ...
Jungki Min +12 more
wiley +1 more source
On the Time Domain Error Caused By the Frequency Domain Sampling Rate in a Reverberation Chamber
IEEE Access, 2019 The time domain (TD) response of a reverberation chamber (RC) can be obtained from the inverse Fourier transform of the measured S-parameters in the frequency domain (FD).
Jianhua Xu, Yongjiu Zhao, Qian Xu
doaj +1 more source