Results 171 to 180 of about 440,511 (349)

Development and testing of cabin sidewall acoustic resonators for the reduction of cabin tone levels in propfan-powered aircraft [PDF]

The use of Helmholtz resonators to increase the sidewall transmission loss (TL) in aircraft cabin sidewalls is evaluated. Development, construction, and test of an aircraft cabin acoustic enclosure, built in support of the Propfan Test Assessment (PTA ...
Balena, F. J., Gatineau, R. J., Kuntz, H. L., Prydz, R. A.   +3 more
core   +1 more source

Bifunctional WO3 Photoelectrodes Decorated by Inkjet Printing for Solar Supercapacitors

Advanced Sustainable Systems, EarlyView.
WO3 bifunctional photoelectrodes, produced by screen printing and then superficially decorated by inkjet printing, are successfully applied to prepare solar supercapacitors. Under illumination, the areal capacitance is enhanced thanks to the positive contribution of the photogenerated charges and the higher exposed area; its value becomes even more ...
Nicola Sangiorgi, Alex Sangiorgi, Alberto Soccio, Marzio Rancan, Lidia Armelao, Alessandra Sanson   +5 more
wiley   +1 more source

Over-the-Rotor Liner Investigation via the NASA Langley Normal Incidence Tube [PDF]

NASA Langley and Glenn Research Centers have collaborated on the usage of acoustic liners mounted very near or directly over the rotor of turbofan aircraft engines.
Becker, Lawrence E, Brown, Martha C, Howerton, Brian M, Jones, Michael G   +3 more
core   +1 more source

Emerging Therapeutic Strategies for Hearing Loss

Advanced Therapeutics, EarlyView.
Challenges still exist in treating hearing loss in cases of severe damage to hair cells or spiral ganglion neurons. Here, a schematic diagram of cochlear sensory hair cells and auditory nerves is presented. It is found that in normal Corti organs, hair cells have upright stereocilia at the top and auditory neurons at the base. Ototoxic drugs, noise, or
Shanying Han, Tian Shen, Weiwei He, Hao Wei, Xiaolong Zhao, Wen Yang, Chuan Bu, Xinghua Tang, Yu Zhao, Jiangang Fan   +9 more
wiley   +1 more source

Development, fabrication and calibration of a porous surface microphone in an aerofoil [PDF]

The development of a porous surface microphone in an airfoil intended to measure acoustic signals in a turbulent airflow and to minimize the flow noise is described.
Kadman, Y., Noiseux, D. U., Noiseux, N. B.   +2 more
core   +1 more source

Topology optimization of viscoelastic microstructures with acoustic impedance manipulation [PDF]

arXiv
Mitigating low-frequency noise is particularly challenging due to its limited natural attenuation. This study aims to design viscoelastic composite microstructures that achieve both low acoustic reflection and high internal damping by simultaneously optimizing their effective acoustic impedance and attenuation characteristics.
arxiv  

The Frequency‐Domain Lattice Boltzmann Method (FreqD‐LBM): A Versatile Tool to Predict the QCM Response Induced by Structured Samples

Advanced Theory and Simulations, EarlyView.
FreqD‐LBM simulates the oscillatory flow at the surface of a QCM‐D resonator in the presence of structured adsorbates. It derives shifts of frequency and bandwidth (equivalent to dissipation) on different overtones. Applications include rough surfaces, adsorbed rigid particles, adsorbed viscoelastic particles, spheres floating freely above the surface,
Diethelm Johannsmann, Paul Häusner, Arne Langhoff, Christian Leppin, Ilya Reviakine, Viktor Vanoppen   +5 more
wiley   +1 more source

Mechanochemistry: Fundamental Principles and Applications

Advanced Science, EarlyView.
In this review, the physicochemical principles of mechanochemistry are first clarified. Based on this foundation, the research basis and cutting‐edge scientific achievements in four areas are introduced: solid‐state organic chemistry, polymers, interface science, and biomechanochemistry.
Liang Dong, Luofei Li, Huiyan Chen, Yi Cao, Hai Lei   +4 more
wiley   +1 more source

Investigation of Liner Axial Displacement in a Complex Acoustic Environment [PDF]

This paper investigates the effects of axial liner displacement on modal attenuation and scattering. Tests are conducted with a uniform liner mounted in the NASA Langley Curved Duct Test Rig, with a multimode source at flow conditions of Mach 0.0 and 0.3.
Brown, M. C., Jones, M. G., Nark, D. M.
core   +1 more source

Recent Advancements in Lung Cancer Metastasis Prevention Based on Nanostrategies

Advanced Science, EarlyView.
Metastasis is the leading cause of death in patients with lung cancer. Nanomedicine can be used to prepare efficient drug delivery systems owing to their advantages and plays an important role in the synergistic antimetastasis of lung cancer. This comprehensive review summarizes the emerging nanostrategies against lung cancer metastasis based on the ...
Fan Xu, Yao Liu, Zujun Que, Bin Luo, Yun Yang, Yan Li, Zhanxia Zhang, Jianhui Tian   +7 more
wiley   +1 more source