Results 51 to 60 of about 266,625 (301)
Imaging velocities of a vibrating object by stroboscopic sideband holography [PDF]
, 2012 We propose here to combine sideband holography with stroboscopic illumination synchronized with the vibration of an object. By sweeping the optical frequency of the reference beam such a way the holographic detection is tuned on the successive sideband ...
Atlan, Michael +3 more
core +4 more sources
FEBS Open Bio, EarlyView.Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley +1 more source
Acoustic Measures Capture Speech Dysfunction in Spinocerebellar Ataxia
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Spinocerebellar ataxias (SCA) are hereditary cerebellar degenerative disorders with a common feature of dysarthria, involving impaired phonatory and articulatory control of speech, thereby affecting social communication. In this study, we investigated whether acoustic measures could objectively measure speech dysfunction and identify
Zena Fadel +5 more
wiley +1 more source
Vibration Test and Signal Analysis of RV Reducer
Jixie chuandong, 2018 RV reducer is a mechanical system,will inevitably yield vibration in its operation process.Three measuring points are arranged on the RV reducer and the vibration signals generated in the work is investigated with the RV reducer test rig and vibration ...
Chen Liguo, Wang Jiugen, Zhang Jing
doaj
Shock and Vibration, 1995 This article discusses time frequency analysis of machinery diagnostic vibration signals. The short time Fourier transform, the Wigner, and the Choi–Williams distributions are explained and illustrated with test cases.
Howard A. Gaberson
doaj +1 more source
Phase Synchrony Analysis of Rolling Bearing Vibrations and Its Application to Failure Identification
Sensors, 2020 As the failure-induced component (FIC) in the vibration signals of bearings transmits through housings and shafts, potential phase synchronization is excited among multichannel signals.
Qing Zhang +2 more
doaj +1 more source
Vibration-based structural interrogation and health monitoring based on nonlinear signal analysis [PDF]
, 2011 Vibration-based structural interrogation and health monitoring is a field which is concerned with the estimation of the current state of a structure or a component from its vibration response with regards to its ability to perform its intended function ...
Trendafilova, Irina
core
A 73‐Year‐Old Man With Several Years of Difficulty Climbing Stairs and Frequent Tripping
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT A 73‐year‐old man presented with progressive weakness and atrophy predominantly affecting the distal finger flexors and quadriceps muscles. Electrophysiological studies demonstrated mixed myogenic and neurogenic features. Muscle MRI showed inflammatory changes, and muscle biopsy revealed granulomatous myositis with histologic features ...
Mehmet Can Sari +3 more
wiley +1 more source
INTERPRETATION OF VIBRATION SIGNALS OF COMPLEX ROTOR SYSTEM BASED ON FRACTAL ANALYSIS
Авіаційно-космічна техніка та технологія, 2019 The work analyzes vibration signals obtained by simulating a turbine of a complex rotor system, for example, an aviation gas turbine engine, under conditions of stationary and non-stationary excitations. Four modes of vibration excitation are considered:
Надія Іванівна Бурау +1 more
doaj +1 more source
Effect of Low-magnitude, High-frequency Vibration on Osteocytes in the Regulation of Osteoclasts [PDF]
, 2010 Osteocytes are well evidenced to be the major mechanosensor in bone, responsible for sending signals to the effector cells (osteoblasts and osteoclasts) that carry out bone formation and resorption. Consistent with this hypothesis, it has been shown that
Al-Dujaili, Saja +5 more
core +2 more sources