Results 21 to 30 of about 2,218,426 (289)
Vibration Resonance Spectrometry (VRS) for the Advanced Streaming Detection of Rotor Unbalance
Machines, 2023 Determination of the diagnosis thresholds is crucial for the fault diagnosis of industry assets. Rotor machines under different working conditions are especially challenging because of the dynamic torque and speed.
Matthew T. Gerdes +5 more
doaj +1 more source
How Wavelike Bumps Mitigate the Vortex-induced Vibration of a Drilling Riser [PDF]
Journal of Applied and Computational Mechanics, 2021 In this paper, computational fluid dynamics is used to study how wavelike bumps influence the suppression of drilling-riser vortex-induced vibration (VIV).
Liping Tang +4 more
doaj +1 more source
Black hole radiation with high frequency dispersion [PDF]
, 1999 We consider one model of a black hole radiation, in which the equation of motion of a matter field is modified to cut off high frequency modes. The spectrum in the model has already been analytically derived in low frequency range, which has resulted in ...
D. G. Swanson +12 more
core +2 more sources
Radio Frequency Spectrum Management [PDF]
Electrical Engineering, 1980 NA NA NA http://archive.org/details ...
+5 more sources
Case depth in SAE 1020 steel using barkhausen noise [PDF]
Materials Research, 2013 The most widely used thermochemical process for surface hardening of steels is case hardening. Using several different heat treatments, martensitic surface layers were formed on SAE 1020 steel into which carbon had been diffused.
Alessandra Drehmer +2 more
doaj +3 more sources
Nihon Kikai Gakkai ronbunshu, 2023 In order to obtain the fundamental information for the measurement of thin oil film thickness adhered on lubrication surface using ultrasonic method, the ultrasonic calculation considering the scattering attenuation at each interface and the influence of
Akitoshi TAKEUCHI
doaj +1 more source
The acute effect of using of texture foot orthoses on ground reaction forces in older adults during walking [PDF]
مجله پزشکی دانشگاه علوم پزشکی تبریز, 2021 Background:Walking is one the common daily activities. With the beginning of middle age, weakness in the lower limb muscles can reduce the ability to walk. The use of foot orthoses reduce the load on the limbs and supports the joints during walking.
Aydin Valizadeh orang +2 more
doaj +1 more source
Quantum Fluctuations of Coulomb Potential as a Source of Flicker Noise. The Influence of External Electric Field [PDF]
, 2006 Fluctuations of the electromagnetic field produced by quantized matter in external electric field are investigated. A general expression for the power spectrum of fluctuations is derived within the long-range expansion.
Buckingham M +11 more
core +3 more sources
Applied Sciences, 2021 The active magnetic bearings system plays a vital role in high-speed rotors technology, where many research articles have discussed the nonlinear dynamics of different categories of this system such as the four-pole, six-pole, eight-pole, and sixteen ...
Sabry M. El-Shourbagy +5 more
doaj +1 more source
Low frequency radio spectrum and spectral turnover of LS 5039 [PDF]
, 2008 LS 5039, a possible black hole x-ray binary, was recently observed with Giant Meterwave Radio Telescope. The observed spectrum presented here shows that the spectrum is inverted at the low frequency.
Aharonian +24 more
core +2 more sources