Results 21 to 30 of about 1,968,691 (295)
Nihon Kikai Gakkai ronbunshu, 2015 This report is described the study on the lubrication characteristics of porous circular journal bearing made with oil impregnate sintered materials as a DC spindle motor's bearing system.
Shigeru OHTSUKA +3 more
doaj +1 more source
Energies, 2019 Most of the mechanical systems in industries are made to run through induction motors (IM). To maintain the performance of the IM, earlier detection of minor fault and continuous monitoring (CM) are required.
Shrinathan Esakimuthu Pandarakone +2 more
doaj +1 more source
MethodsX, 2023 In measurements and numerical modelling of wave propagation, undesired interference between direct and multipath arrivals can be reduced using Fourier-based signal processing methods.
Eivind Nag Mosland +2 more
doaj +1 more source
Diffusion-induced dephasing in nanomechanical resonators [PDF]
, 2010 We study resonant response of an underdamped nanomechanical resonator with fluctuating frequency. The fluctuations are due to diffusion of molecules or microparticles along the resonator.
A. Isacsson +8 more
core +2 more sources
Short-Range SAR Imaging From GHz to THz Waves
IEEE Journal of Microwaves, 2021 Synthetic aperture radar (SAR) is a well-known imaging technique and most commonly used up to the microwave frequency spectrum (below 30 GHz) which provides spatial resolution in the sub-m range.
Aman Batra +8 more
doaj +1 more source
Difference spectrum fitting of the ion–neutral collision frequency from dual-frequency EISCAT measurements [PDF]
Atmospheric Measurement Techniques, 2023 The plasma–neutral coupling in the mesosphere–lower thermosphere strongly depends on the ion–neutral collision frequency across that region. Most commonly, the collision frequency profile is calculated from the climatologies of atmospheric models ...
F. Günzkofer +5 more
doaj +1 more source
Influence of cavity lifetime on high-finesse microcavity two-photon absorption photodetectors [PDF]
, 2007 For optical pulse incidence as compared with continuous-wave incidence, the enhancement of two-photon absorption inside a high-finesse planar microcavity is reduced, the pulse inside the cavity and the cavity spectrum are broadened.
Barry, Liam P. +5 more
core +1 more source
The effect of impeller–diffuser interactions on diffuser performance in a centrifugal compressor
Engineering Applications of Computational Fluid Mechanics, 2016 The unsteady phenomenon abounds in centrifugal compressors and significantly affects the compressor performance. In this paper, unsteady simulations are carried out to investigate the aerodynamic performance of a process-unshrouded centrifugal compressor
Peng-Fei Zhao +4 more
doaj +1 more source
Comparative study of two typical one-third octave algorithms in substation noise analysis
Energy Reports, 2022 The one-third octave band (1/3-octave-band) is the most important output item in noise spectrum analysis, which can reflect the frequency characteristics of the noise.
Zhenghai Liao +5 more
doaj +1 more source
Temperature- and Size-dependence of Line shape of ESR spectra of XXZ antiferromagnetic chain [PDF]
, 2016 The ESR (Electron Spin Resonance) spectrum of the XXZ spin chain with finite length shows a double-peak structure at high temperatures around the EPR (Electron Paramagnetic Resonance) resonance frequency.
Bertaina, Sylvain +3 more
core +5 more sources