Results 41 to 50 of about 43,909 (261)

Compressor pulsation noise attenuation using reactive silencer with various configurations: A theoretical and experimental study

open access: yesHeliyon
Compressors are a significant source of noise in various industries. Silencers can be utilized to mitigate this noise. This study aims to design and construct an expansion silencer that can effectively reduce the pulsating noise produced by a ...
Negar Rahmani   +3 more
doaj   +1 more source

Design and optimization of sound package using FE-SEA numerical reverberation method

open access: yesZhongguo Jianchuan Yanjiu, 2017
To solve the low efficiency problem of the conventional sound package, the FE-SEA numerical reverberation method is applied in the design and optimization of sound packages in the whole frequency domain.
YANG Deqing, SHI Jiaxin, YU Yang
doaj   +1 more source

A Clinical Study of Decellularized Tissue Engineering Hyaline Cartilage Graft (dLhCG) for Articular Cartilage Repair

open access: yesAdvanced Science, EarlyView.
ABSTRACT Current clinical approaches for knee cartilage repair are often limited by hypertrophy and fibrosis in the regenerated tissues. A decellularized tissue‐engineered hyaline cartilage graft (dLhCG), composed of a type II collagen‐based extracellular matrix, has been developed to overcome this limitation.
Zhen Zhang   +16 more
wiley   +1 more source

Modeling the effect of the number and angle of the baffle on the sound transmission loss in reactive muffler [PDF]

open access: yesSalāmat-i kār-i Īrān
Introduction: The sound coming from the exhaust of cars is the main cause of noise pollution in the urban environment. Mufflers are used as a passive noise control device to reduce the sound coming from the exhaust of cars.
Iraj Alimohamadi   +4 more
doaj  

Enhancing the sound transmission loss in double-leaf partitions with lateral local resonators substructure

open access: yesAdvances in Mechanical Engineering, 2022
We report theoretically on the sound transmission loss performance through a periodic double plate acoustic metamaterial made of lateral local resonance (LLR) substructure.
Akintoye O Oyelade   +2 more
doaj   +1 more source

Smart Nanotechnologies for Multimodal Neuromodulation and Brain Interfacing

open access: yesAdvanced Science, EarlyView.
Recent advances in smart nanotechnologies are expanding the toolbox for brain interfacing, from wireless neuromodulation and high‐resolution sensing to targeted delivery within the central nervous system. By combining responsive nanomaterials with bioinspired design, these platforms enable multimodal interactions with neurons and glia, while also ...
Tommaso Curiale   +6 more
wiley   +1 more source

Theoretical analysis of the sound-absorption coefficient and transmission loss for longitudinal clearances among the close-packed cylinders (Three kinds of estimation and experiment)

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2015
This study estimates the sound-absorption coefficient and transmission loss for the dimensions of clearances among the close-packed cylinders by theoretical analysis and compares these estimates with experimental values.
Shuichi SAKAMOTO   +4 more
doaj   +1 more source

Partition intersections and their effects on transmission loss and apparent sound transmission class [PDF]

open access: yesProceedings of Meetings on Acoustics, 2013
It is widely recognized and accepted that poorly designed intersections between partitions can significantly reduce the sound isolation that is achieved. However, the effect of specific intersection details are not widely reported and available. This presentation will focus on a case study in which different intersection details have been tested in the
openaire   +1 more source

Ultrasound‐Responsive Piezoelectric Fibrous Membrane Promotes Neurological Recovery After TBI by Modulating Microglial Polarization via Restoring Mitochondrial Dynamic Homeostasis

open access: yesAdvanced Science, EarlyView.
We demonstrate a novel therapy for traumatic brain injury TBI using a LIPUS‐responsive Piezoelectric fibrous membrane. It targets microglial mitochondria via in situ electrical signals, restoring homeostasis and reducing oxidative stress to promote an anti‐inflammatory M2 phenotype.
Wei Li   +9 more
wiley   +1 more source

An investigation into sound transmission loss by polypropylene needle-punched nonwovens

open access: yesAlexandria Engineering Journal, 2016
In this work, the effects of variables such as initial carded web mass, needle penetration depth, punch density, and the frequency of incident sound wave on transmission of sound through polypropylene needle-punched nonwovens were investigated.
Kazem Ghorbani   +3 more
doaj   +1 more source

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