Results 251 to 260 of about 373,369 (294)
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The discrimination of blood pressure fluctuations
Biological Psychology, 1979Two studies are described in which volunteers were trained to distinguish between displays contingent on or independent of blood pressure fluctuations. The latter were monitored with pulse transit time (TT). In Experiment 1, subjects were required to choose between TV displays that either reflected instantaneous TT or variations recorded a few minutes ...
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Proceedings of SPE Production Operations Symposium, 1985
ABSTRACT The Pressure Fluctuating Tool (PFT) utilizes a fluidic oscillator to create pulsating pressure for breaking down perforations. The maximum pressure fluctuations produced by the oscillator can be as great as 1500 psi (10,300 kPa) above and below downhole ambient pressure with frequency ranging from 140 to 160 cycles per second ...
R. A. Payne +3 more
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ABSTRACT The Pressure Fluctuating Tool (PFT) utilizes a fluidic oscillator to create pulsating pressure for breaking down perforations. The maximum pressure fluctuations produced by the oscillator can be as great as 1500 psi (10,300 kPa) above and below downhole ambient pressure with frequency ranging from 140 to 160 cycles per second ...
R. A. Payne +3 more
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Fluctuations of the Casimir pressure at finite temperature
Physical Review D, 1995We consider special topics related to the Casimir effect [1]. We extend the considerations of the fluctuations of the Casimir pressure [2], [3] to finite temperature [4]. In the unphysical high-temperature limit the Green’s functions become more singular.
, Robaschik, , Wieczorek
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The response of railway passengers to pressure fluctuations
Applied Ergonomics, 1986This paper describes a study carried out on behalf of Deutsche Bundesbahn (West German Railways) by British Rail in collaboration with the Institute of Consumer Ergonomics. The aim was to evaluate subjective responses to predicted pressure fluctuations that are likely to occur in vehicles that will run on a new railway line under construction.
I L, McClelland, R G, Gawthorpe
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Similarity scaling of pressure fluctuation in turbulence
Physical Review E, 2003Pressure fluctuation was measured in a turbulent jet using a condenser microphone and piezoresistive transducer. The power-law exponent and proportional constant of normalized pressure spectrum are discussed from the standpoint of Kolmogorov universal scaling.
Yoshiyuki, Tsuji, Takashi, Ishihara
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On Transonic Pressure Fluctuations
The Journal of the Acoustical Society of America, 1963Data on transonic pressure fluctuations are related qualitatively to the corresponding local flow conditions.
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Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 1996
This paper reintroduces an alternative plasticity index where σm is the r.m.s. profile slope.
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This paper reintroduces an alternative plasticity index where σm is the r.m.s. profile slope.
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Air Pressure Fluctuations in a Prairie Soil
Soil Science Society of America Journal, 1998Abstract The influence of air convection on soil aeration has not been investigated in great detail. A study was conducted to measure air pressure changes by depth in the first 2 m of a prairie soil that was known for its denitrification properties.
Renault, P. +3 more
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The Journal of the Acoustical Society of America, 1961
The intense vibration accompanying the extension of dive brakes and other high-drag devices on aircraft and missiles has been observed for many years. Recently, considerable vibration has been experienced at the fundamental longitudinal mode and at other internal resonance frequencies of a vehicle which had a blunt base during the maximum dynamic ...
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The intense vibration accompanying the extension of dive brakes and other high-drag devices on aircraft and missiles has been observed for many years. Recently, considerable vibration has been experienced at the fundamental longitudinal mode and at other internal resonance frequencies of a vehicle which had a blunt base during the maximum dynamic ...
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Effect of amplitude fluctuations on radiation pressure
Physical Review A, 1985The effect of amplitude fluctuations of a radiation field on the motion of a two-level atom is calculated. The results are compared with a similar calculation of Cook for the effect of phase fluctuations on such motion.
, Sharma, , Prasad
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