Results 151 to 160 of about 303,366 (347)

Variation of Sound Absorption with Area [PDF]

, 1936
V. L. Chrisler
openalex   +1 more source

A Water‐Triggered Sensor for Self‐Powered Flood Alarming

Advanced Science, EarlyView.
Urban floods related to global warming generally cause significant casualties. Traditional cable flood warning systems are costly, while wireless ones face power limitations. This research proposes a self‐powered flood sensor with a water‐triggered Galvanic battery, enabling rapid flood warnings with great promise of low cost and long service lifetime.
Mingqi Zhao, Shanzhi Lyu, Yingchao Ma, Nan Zhang, Yapei Wang   +4 more
wiley   +1 more source

Influence of the Grain Orientation of Wood upon Its Sound Absorption Properties. [PDF]

Materials (Basel), 2023
Guiman MV, Stanciu MD, Roșca IC, Georgescu SV, Năstac SM, Câmpean M.   +5 more
europepmc   +1 more source

Acoustic response of a rigid frame porous medium slab with a periodic set of inclusions

, 2007
The acoustic response of a rigid frame porous slab with a periodic set of inclusions is calculated by use of a multipole method. The acoustic properties, in particular the absorption, of such a structure are then derived and studied.
De Ryck, Laurent, Groby, Jean-Philippe, Lauriks, Walter, Wirgin, Armand   +3 more
core   +1 more source

Long-tube method for field determination of sound-absorption coefficients

, 1952
E. Jones, S. Edelman, Albert London
openalex   +1 more source

Targeting Neutrophil/Eosinophil Extracellular Traps by Aptamer‐Functionalized Nanosheets to Overcome Recalcitrant Inflammatory Disorders

Advanced Science, EarlyView.
In this study, C‐TAH, as multifunctional nanosheets, is developed with tannic acid and histone aptamer coverage. C‐TAH displays mild cytotoxicity, robust dsDNA and NETs/EETs binding efficiency, and potent antioxidant and antibacterial ability in vitro. C‐TAH treatment ameliorates dysregulated inflammation and restores hearing function in animal models,
Yongqiang Xiao, Xinyue Wang, Ming Liu, Xiao Fu, Nanfeng Zhang, Wenqing Yang, Junyi Ge, Yangyang Li, Duan Ma, Jing Ma, Weiping Wen, Dongdong Ren, Tianyu Zhang, Zhaoxu Tu   +13 more
wiley   +1 more source

A study of air-to-ground sound propagation using an instrumented meteorological tower [PDF]

The results of an exploratory NASA study, leading to a better understanding of the effects of meteorological conditions on the propagation of aircraft noise, are reported.
Kasper, P. K., Keefe, L. R., Pappa, R. S., Sutherland, L. C.   +3 more
core   +1 more source

The Absorption of Sound in Mixtures of Gases which Exhibit a Vibrational Relaxation Time [PDF]

, 1953
F. A. Angona
openalex   +1 more source

A Wearable AI‐Driven Mask with Humidity‐Sensing Respiratory Microphone for Non‐Vocal Communication

Advanced Science, EarlyView.
A wearable, plug‐and‐play respiratory microphone—featuring a gold nanoparticle‐based humidity sensor—facilitates voice‐free verbal communication for patients with impaired vocal fold function. Abstract Hoarseness and dysphonia caused by vocal cord conditions or laryngeal surgeries significantly hinder communication and quality of life.
Jianfei Wang, Hongyu Zhang, Xiaomin Wu, Mingyan Gao, He Wen, Zhibo Zhang, Kremena Makasheva, Wen Jung Li, Zuobin Wang   +8 more
wiley   +1 more source

Evaluation and Analysis of Sound Absorption across Various Types of Hemp Fibre

Environmental and Climate Technologies
Exploring sound absorption solutions, hemp fibre stands out as a compelling replacement for traditional materials like fiberglass, foam, and mineral wool.
Strazdas Edgaras, Januševičius Tomas
doaj   +1 more source