Results 51 to 60 of about 3,664,430 (285)

Noise Produced by the Interaction of Acoustic Waves and Entropy Waves with High Speed Nozzle Flows [PDF]

, 1976
Some aspects of the noise generated internally by a turbojet engine are considered analytically and experimentally. The emphasis is placed on the interaction of pressure fluctuations and entropy fluctuations, produced by the combustion process in the ...
Bohn, Mark Stephen
core   +1 more source

Ultrafast Vertical Organic Electrochemical Transistors With Ion‐Permeable Conductive Polymer Top Electrodes

Advanced Materials, EarlyView.
Vertical organic electrochemical transistors (vOECTs) are limited in speed by ion‐impermeable metal electrodes that slow ion injection. Using ion‐permeable PBFDO top electrodes allows direct vertical ion injection into BBL channels, achieving high current densities (>400 A cm−2), large on/off ratios (>106), and ultrafast switching in 28 µs. This sets a
Han‐Yan Wu, Yingxue An, Luigi Fabiano, Qifan Li, Qingqing Wang, Feng Zhang, Wenlong Jin, Miao Xiong, Junpeng Ji, Ugo Bruno, Grzegorz Greczynski, Grazia Maria Lucia Messina, Xianjie Liu, Chi‐Yuan Yang, Simone Fabiano   +14 more
wiley   +1 more source

An investigation into inconsistencies between theoretical predictions and microphone array measurements of railway rolling noise [PDF]

, 2007
Theoretical models, such as TWINS, and microphone array measurements have been widely used to gain better understanding of rolling noise. However, the array measurements are often inconsistent with the TWINS predictions and give less prominence to the ...
Kitagawa, Toshiki
core   +1 more source

'You Must Make Less Noise in Here, Mister Schouler': Acoustic Profiling in American Realism [PDF]

, 2002
Drawing on sound studies, this essay traces realist methods of characterization through sound and noise in William Dean Howells's A Hazard of New Fortunes, Theodore Dreiser's Sister Carrie, and Frank Norris's McTeague. Schweighauer introduces the concept
Schweighauser, Philipp
core   +1 more source

Laser‐Assisted Phase Engineering of 2D MoS2 for Efficient Solution‐Processed Electronics

Advanced Materials, EarlyView.
Here, local laser‐assisted phase transition from solution‐processed phase‐pure 1T′ to 2H MoS2 is shown to critically depend on the irradiation atmosphere. While processing in air leads to damaged insulating regions, inert conditions yield semiconducting 2H domains, enabling direct field‐effect transistor patterning with optimized lateral 1T′‐2H MoS2 ...
Anna Zhuravlova, Minjuan Li, Osamah Alharbi, Yeonsu Jeong, Bin Han, Lei Gao, Mischa Bonn, Mario Lanza, Sheng Yang, Antonio Gaetano Ricciardulli, Paolo Samorì   +10 more
wiley   +1 more source

A Study of Sound Source Characteristics in Active Noise Control and Fault Diagnosis [PDF]

Active noise control (ANC) is an effective technique used to reduce noise levels at the controlled points by introducing a cancellation sound wave into the primary acoustic field.
Gu, Fengshou, Ball, Andrew, Zhen, Dong, Fan, Yibo   +3 more
core   +3 more sources

Underwater Noise Measurements around a Tidal Turbine in a Busy Port Setting

Journal of Marine Science and Engineering, 2022
Acoustic emissions from current energy converters remain an environmental concern for regulators because of their potential effects on marine life and uncertainties about their effects stemming from a lack of sufficient observational data. Several recent
Joseph Haxel, Xiaoqin Zang, Jayson Martinez, Brian Polagye, Garrett Staines, Zhiqun Daniel Deng, Martin Wosnik, Patrick O’Byrne   +7 more
doaj   +1 more source

Multi-scale mechanical and acoustic characterization of low noise pavements

Environmental Science and Pollution Research
AbstractUsing data on in situ performance of low noise pavements, three well performing mixtures were selected: SDA 4, SDA 6, and SDA 8. These mixtures and the corresponding mastic (filler + bitumen + additive) were tested for their mechanical and acoustic performance in non-aged and aged states using a multi-scale approach (mm to km).
Lily. D. Poulikakos, Felix Schlatter, Liliane Huber, Peter Mikhailenko, Martin Arraigada, Michele Griffa, Christian Angst, Erik Bühlmann   +7 more
openaire   +3 more sources

Descriptors to Dynamics: A Materials and Device Perspective on in‐Materio Physical Reservoir Computing for Neuromorphic Edge Intelligence

Advanced Materials, EarlyView.
Intrinsic material dynamics are harnessed as computational resources for neuromorphic in‐materio physical reservoir computing. Defects, ionic motion, interfaces, percolation, geometry, and biasing shape transient states that provide fading memory, nonlinearity, and high‐dimensional projection for simple readout. A descriptor‐to‐dynamics framework links
Kshitij RB Singh, Alif Syafiq Kamarol Zaman, Muzhen Xu, Yuki Usami, Saptarshi Das, Hirofumi Tanaka   +5 more
wiley   +1 more source

Acoustic liner optimisation and noise propagation through turbofan engine intake ducts

, 2013
The research in this thesis explores the prediction of fan noise propagation through turbofan engine intakes and its radiation to the far-field. The performance of acoustic liners installed in intakes to attenuate noise is the focus of the study.
Kewin, Matthew Fergus
core   +1 more source