Results 281 to 290 of about 10,495,398 (335)
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Phase angle predicts physical function in older adults.
Archives of gerontology and geriatrics (Print), 2020BACKGROUND Phase angle (PhA) is recognized as an indicator of cellular health and may be a useful marker of physical functions in geriatric populations.
C. Matias +6 more
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Association Between Phase Angle And Isolated And Grouped Physical Fitness Indicators In Adolescents.
Physiology and Behavior, 2020OBJECTIVE Examine association between phase angle and isolated and grouped physical fitness indicators in adolescents. Methods The sample consisted of 353 adolescents, aged 10-16 years.
P. C. Martins +5 more
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Phase Angle is Determined by Body Composition and Cardiorespiratory Fitness in Adolescents
International Journal of Sports Medicine, 2020The phase angle is used to evaluate nutritional status and is an indicator of cellular health. Cardiorespiratory fitness and body composition are strong indicators of health during adolescence.
R. D. Langer +4 more
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Phase Transitions in Angle Variables
Physical Review Letters, 2003Phase transitions in angle variables are studied. An example of angular phase transition, an axially to triaxially deformed "shape" transition in nuclei, is discussed. Spectroscopic signatures for the occurrence of these transitions are suggested. Preliminary experimental evidence is presented.
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Phase-Angle Control of System Interconnections
Transactions of the American Institute of Electrical Engineers, 1939This paper describes an application of a new method of automatic control between two interconnected power systems, whereby greater utilization of the interconnection capacity is secured. As the stable limit of the interchange between systems is affected by variations in the magnitude and location of intermediate loads on the respective systems, direct ...
R. E. Pierce, B. W. Hamilton
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Very fast phase angle estimation algorithm for a single-phase system having sudden phase angle jumps
Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344), 2003This work proposes a very fast phase angle estimation algorithm for a single-phase system under a sudden phase angle jump condition. When a source voltage changes in a step manner, the normal phase angle detector, such as a phase locked loop (PLL) and a (low pass) filter, typically generates phase delay and results in a sluggish response, and causes ...
null Hong-Seok Song +2 more
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Fast Phase Angle Jump Estimation to Improve the Convergence Time of the GDSC-PLL
IEEE transactions on industrial electronics (1982. Print), 2020The fast detection of magnitude, frequency, and phase angle of the fundamental-frequency component is very useful in many three-phase power system applications.
Daniel Soares dos Santos Andrade +3 more
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Measurement Science and Technology, 2004
A phase angle standard for power frequencies (40–400 Hz) with a very low measuring uncertainty of 3 µrad is developed. The standard is based on a two-channel high-stability arbitrary waveform AC source for voltages up to 120 V and currents up to 6 A with high phase angle resolution which is realized as a development device with full computer control. A
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A phase angle standard for power frequencies (40–400 Hz) with a very low measuring uncertainty of 3 µrad is developed. The standard is based on a two-channel high-stability arbitrary waveform AC source for voltages up to 120 V and currents up to 6 A with high phase angle resolution which is realized as a development device with full computer control. A
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Phase angle regulating transformer protection
IEEE Transactions on Power Delivery, 1994This paper describes the protection of a 345 kV, 450 MVA three phase, phase angle regulating (PAR) transformer. The transformer includes load tap changers which permit phase angle variations of 25/spl deg/ advance to 25/spl deg/ retard in a total of 32 steps (16 advance, 16 retard).
M.A. Ibrahim, F.P. Stacom
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Improved models for the prediction of asphalt binder dynamic shear modulus and phase angle
, 2020In this paper, new set of models for predicting the dynamic shear modulus and phase angle of asphalt binders from conventional viscosity are developed and presented.
I. Onifade, B. Birgisson
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