Results 81 to 90 of about 299,226 (303)

Numerical Assessment of the Efficacy of Various Exhaust Muffler Liner Materials on Acoustical Performance

Journal of Engineering
Noise levels have rapidly increased in recent years, largely due to the proliferation of modern appliances and critical noise sources like engine exhaust mufflers. Controlling muffler-radiated noise could reduce its impact on the surrounding communities.
Asmaa O. M. Raoof , Ali I. Mosa
doaj   +1 more source

Sound Transmission Loss of Complex Single Panels [PDF]

The Journal of the Acoustical Society of America, 1971
Frequently, the transmission loss of panels must be estimated from limited data for use in design problems. Usually, the panels involve complex constructions where the assumptions of single-panel theory cannot be reasonably applied. A simplified analysis of the dynamics of some complex panels is presented which leads to a straight-forward prediction ...
openaire   +1 more source

AI‐Assisted Digital Single‐Molecule Activity Tracker for Decoupling Intrinsic Heterogeneity from Photo‐Oxidative Damage in High‐Photon‐Flux Enzymology

Advanced Science, EarlyView.
Employing a digital single‐molecule activity tracker (dSMAT), this research demonstrates that high‐photon‐flux irradiation drives progressive oxidative scarring in polymerases. Unlike simple thermal denaturation, real‐time kinetic tracking dynamically visualizes enzymes degrading into multiple impaired subpopulations.
Anran Zheng, Qi Yang, Jinze Li, Fuqiang Ma, Xuefeng Wang, Zhen Guo, Chuanyu Li, Dongshu Li, Jia Yao, Zhiqi Zhang, Wei Zhang, Lianqun Zhou   +11 more
wiley   +1 more source

Sound transmission loss enhancement through triple-peak coupled resonances acoustic metamaterials

International Journal of Mechanical Sciences, 2023
G. Sal-Anglada, D. Yago, J. Cante, J. Oliver, D. Roca   +4 more
semanticscholar   +1 more source

Implications of Nonsub-Wavelength Resonator Spacing on the Sound Transmission Loss Predictions of Locally Resonant Metamaterial Partitions

, 2020
Locally resonant metamaterials have recently emerged and gained attention in the field of noise control engineering. The addition of resonant structures to a flexible partition on a sub-wavelength scale enables a targeted frequency range of strongly ...
L. V. Belle, C. Claeys, E. Deckers, W. Desmet   +3 more
semanticscholar   +1 more source

A Metal‐Phenolic Nanocluster Orchestrates Mito‐Ca2+ Metabolic Autonomy for Tumor Ca2+ Interference Therapy

Advanced Science, EarlyView.
Tumor Ca2+ interference therapy suffers from self‐protective Ca2+ metabolic autoregulation. In this scenario, a versatile metal‐phenolic nanocluster (TCMH) is engineered to modulate mitochondrial calcium uniporter (MCU) ‐mediated mito‐Ca2+ metabolic autonomy.
Ronglong Chen, Jia Huang, Yuepeng Wang, Shucong Yao, Fei Wu, Juan Liu, Chunxue Song, Li Lin, Xijun Lin, Yingjie Deng, Chao Zhang, Zhiquan Huang, Zixian Huang, Lisi Xie   +13 more
wiley   +1 more source

Studying the Impact of Geometric Characteristics of Internal Tubes in Expansion Mufflers on Sound Transmission Loss [PDF]

بهداشت و ایمنی کار
Introduction: A significant contributor to noise pollution in urban areas is automobile exhaust systems, wherein mufflers, as passive devices, are designed to mitigate the noise produced.
Iraj Alimohammadi, Mahdi Farrokhi, Sevda Javadi, Mozhgan Nouraei, Leila Hosseini Shafeie   +4 more
doaj  

Estimation of Sound Transmission Loss in Nanofiber Nonwoven Fabrics: Comparison of Conventional Models and the Simplified Limp Frame Model. [PDF]

Nanomaterials (Basel), 2023
Sakamoto S, Hasegawa T, Ikeda K.
europepmc   +1 more source

The E3 Ubiquitin Ligase RLIM Safeguards Oligodendrocyte Development and Myelination by Targeting SLC7A11 for Polyubiquitination to Regulate Ferroptotic Resistance

Advanced Science, EarlyView.
RLIM‐mediated SLC7A11 polyubiquitination is required for SPTBN2‐mediated trafficking and membrane localization of SLC7A11, which enables oligodendrocyte precursor cells to be resistant to ferroptosis and safeguards oligodendrocyte lineage progression and thus myelination.
Yuwei Li, Haijun Zhang, Jieya Zhou, Shiyu Yang, Jingmei Cha, Gaofeng Yan, Shuhua Zhao, Bingyu Mao, Pengcheng Ma   +8 more
wiley   +1 more source

Examining the role of the hole and the orientation of the baffle on the loss of sound transmission in reactive mufflers using COMSOL software simulation [PDF]

طب کار
Introduction: Nowadays, noise pollution in the environment has become as a worldwide health concern. A  large share of this noise comes from vehicles, where mufflers in their exhaust systems are essential for lowering engine noise levels.
Iraj Alimohammadi, Mahdi Farrokhi, Sevda Javadi, Saideh Nasher   +3 more
doaj