Results 131 to 140 of about 229,117 (168)
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Resonance Suppression on Nanoscale Viscoelasticity Measurement
Advanced Materials Research, 2012During the broadband viscoelasticity measurement process, when the frequency of the excitation force become high relative to the resonant frequency or the bandwidth of the instrument dynamics, the adverse instrument dynamics is motivated, which causes the cantilever resonance and generates large measurement errors in the measurement data. To solve this
Ping Xie, Lei Zhang, Qing Ze Zou
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Radio science measurements with suppressed carrier
2013 IEEE Aerospace Conference, 2013Radio Science started when it became apparent with early deep space missions that occultations by planetary atmospheres would affect the quality of radio communications. Since then the atmospheric properties and other aspects of planetary science, solar science, and fundamental physics were studied by scientists. Radio Science data was always extracted
Sami Asmar +3 more
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Error suppression in cavity perturbation measurements
Journal of Physics E: Scientific Instruments, 1979A new technique is described which eliminates the influence of a non-ideal microwave circuit on cavity perturbation measurements. The technique is illustrated by measurements in the particularly difficult case of low-loss samples exhibiting large shifts in resonance frequency.
T Guldbrandsen +2 more
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Geometric artefact suppressed surface potential measurements
Nanotechnology, 2006Due to the finite scanning probe microscopy (SPM) tip radius and the resulting geometric convolution between the tip and the sample surface, nano-resolution surface potential (SP) or electric force measurement (EFM) cannot be free from topographic artefacts.
Minhwan Lee, Wonyoung Lee, Fritz B Prinz
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Suppressed demand-causes, measurement and cures
Proceedings of IEEE. AFRICON '96, 2002Suppressed power demand is a problem which occurs in the electrical distribution systems of many developing countries. This paper describes how the technical causes of the problem can be traced to one or more of three factors: inadequate power system capacity, leading to pre-emptive load-shedding; poor voltage regulation, leading to reduced energy ...
M. Godfrey, E. Quarshie, M.P. Robiou
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Lateralization as a measure of suppression
The Journal of the Acoustical Society of America, 1981A contralateral signal presented at the same time and at the same frequency and intensity as an ipsilateral signal leads to an apparent sound source in the medial plane. The level of the contralateral signal required to produce this effect (the lateralization level) has been used as an estimator of the effective level of the ipsilateral signal in ...
Daniel L. Weber, Walt Jesteadt
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Contralateral suppression of DPOAE measured in real time
Clinical Otolaryngology and Allied Sciences, 2002The aim of this study was to measure contralateral suppression of distortion product otoacoustic emissions (DPOAE) in real time. A total of 10 human subjects were studied with a novel device to record DPOAE without signal time averaging, using digital narrow band pass filtering. Real time DPOAE levels were recorded at 2f1-f2 using primary tone settings
A L, James, R J, Mount, R V, Harrison
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Magnesium suppression for 26Al measurements using AlO− ions
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2004Abstract Measuring the resonance strengths of the 25Mg(p,γ)26Al reaction at energies of astrophysical interest poses a very difficult task for the usual prompt γ-ray detection method. Here we describe an alternative method in which targets are first irradiated and the produced 26Al nuclei are off-line counted by means of AMS. An overall efficiency of
Arazi, A. +9 more
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Conducted EMI measurement and its suppression measure of Elevator system
Proceedings of the 10th World Congress on Intelligent Control and Automation, 2012With widely use of high -speed power switching devices, EMI problems of Elevator system become more serious. It discussed the interference noise of PWM inverters, and the main noise of converter is conducted interference and Radiation interference. Then the measurement method of conducted EMI is proposed and use it with real elevator system. Lastly the
Xiao-Qin Wen +2 more
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Radiation suppression ratio measurement of noise suppression sheet by compact 3m method
2007 18th International Zurich Symposium on Electromagnetic Compatibility, 2007A noise suppression sheet (NSS) is used for decoupling of the noise path, suppressing RF noise current, and reducing radiation. A microstrip line (MSL) test fixture is also used for measuring the radiation suppression ratio (Rrs) [1] as the antenna. The ratio is derived from a comparison before and after the NSS installation in accordance with CLSPR22,
null Hirosuke Suzuki +3 more
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