Results 11 to 20 of about 638,913 (261)
Frequency Spectrum Analysis of Signals Used in Transcorneal Electrical Stimulation
Nova Scientia, 2022 The contribution of this research work focuses on understanding the biological behavior of time-varying electric fields, specifically in the eyeball, by proposing sensitive frequency ranges, specifically for primary open-angle glaucoma POAG and RP ...
Jorge Santiago Amaya +4 more
doaj +1 more source
Nihon Kikai Gakkai ronbunshu, 2019 This report describes the study on the lubrication characteristics of porous journal bearings, which were made with oil impregnated sintered materials having some hydrodynamic shapes, to apply them for a DC Spindle Motor’s bearing system. Herring Bone (I
Shigeru OHTSUKA +3 more
doaj +1 more source
Measurement and Analysis of Radio Frequency Interference in the UWB Spectrum [PDF]
2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall), 2019 Ultra-wide band (UWB) radio systems are expected to operate in co-existence with a myriad of other systems over a large unlicensed bandwidth. Thus, UWB devices need to incorporate efficient inter-system interference mitigation mechanisms. In this paper, we present interference measurements covering the UWB spectrum from 3~GHz to 11~GHz conducted at two
Ramoni Adeogun +4 more
openaire +1 more source
Frequency spectrum characteristic of quartz sandstone rock mass with GPR
工程科学学报, 2015 Ground penetrating radar(GPR) electromagnetic waves which penetrate through rock and soil mediums and are reflected back carry internal information about the target objects.
YANG Guang, LIU Dun-wen
doaj +1 more source
Photoacoustics, 2023 The photoacoustic signal generated by an optically absorbing target is determined by the spatial profile of absorbed optical energy within the target.
M. Dantuma, D.B. Gasteau, S. Manohar
doaj +1 more source
Analysis and optimization of rubidium spectrum lamp to eliminate frequency fluctuations of rubidium atomic frequency standard [PDF]
MATEC Web of Conferences, 2020 Rubidium atomic frequency standard (RAFS) is the most widely used frequency standard in space. The light used to pump the atoms and detect the resonance signal is emitted by rubidium spectrum lamp, so the light intensity of rubidium spectrum lamp ...
Lian Jiqing +5 more
doaj +1 more source
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
Journal of Measurement Science and Instrumentation, 2023 The current spectrum analysis method cannot perform synchronous scanning on the resistance sensor array. The Hilbert-Huang transform (HHT) with improved empirical mode decomposition is innovatively applied for the spectrum analysis of the response signal
TONG Zhixue +4 more
doaj
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