Results 81 to 90 of about 44,520 (308)
Physical Parameters of the Broadband Noise-Generator Diodes
Russian Microelectronics, 2020 The physical parameters of the silicon noise-generator diodes manufactured on single-crystalline silicon substrates by planar technology are studied by the method of the measurement of the current–voltage characteristics (I–V curves) and capacity–voltage characteristics (C–V curves).
Buslyuk, V. V. +6 more
openaire +3 more sources
Advanced Materials Interfaces, EarlyView.Ultrathin MXene/EMF composite foams achieve a specific shielding efficiency of 749.6 dB.dB·cm3$\mathrm{dB}\cdot {\mathrm{cm}}^{3}$/g, while the silver‐enhanced MXene/Ag/EMF reaches 81.4 dB shielding effectiveness at just 1.0 mm thickness. Both composites exhibit rapid Joule heating, retain stability up to 250∘C$^\circ{\rm C}$, and withstand 1000 ...
Abdullah A. Mahmood +7 more
wiley +1 more source
Performance and noise trade-offs on a civil airliner with over-the-wing engines [PDF]
, 2011 Community noise has become a major consideration in the design of new aircraft. The noise generated by the engines has decreased over the generations to the extent that a whole-airframe approach is required now to achieve further significant reductions ...
Joseph, P.F. +5 more
core +1 more source
Sučasnì Informacìjnì Tehnologìï u Sferì Bezpeki ta Oboroni, 2018 In this paper the statistical characteristics of the fractal dimension (FD) of acoustic signals of unmanned aerial vehicles (UAV), broadband noise and wind noise are analyzed.
Leonid M. Artushin, Mykola V. Buhaiov
doaj
Advanced Materials Technologies, EarlyView.This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane +4 more
wiley +1 more source
Study on Flow Control and Noise Reduction of Jet-type Centrifugal Pump based on Non-smooth Surface Structure [PDF]
Journal of Applied Fluid MechanicsJet-type centrifugal pumps are widely used in daily water supply systems due to their excellent self-priming capabilities; however, their complex internal flow patterns can negatively affect performance and generate high noise levels.
X. Liu +5 more
doaj +1 more source
Advanced Materials Technologies, EarlyView.Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu +8 more
wiley +1 more source
Advanced Materials Technologies, EarlyView.ABSTRACT Real‐time insight into local chemistry is critical for reliable part quality in additive manufacturing, especially laser powder bed fusion (PBF‑LB/M), where rapid thermal cycles and localized evaporation can undermine part performance. Optical emission spectroscopy (OES) offers non‑intrusive, in situ plume monitoring, but detection geometry ...
Philipp Gabriel +4 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
Design of a low-noise aeroacoustic wind tunnel facility at Brunel University [PDF]
, 2014 This paper represents the design principle of a quiet, low turbulence and moderately high speed aeroacoustic wind tunnel which was recently commissioned at Brunel University.
Kim, JH +5 more
core +1 more source