Results 341 to 350 of about 7,895,299 (362)

Phase Angle is Moderately Associated with Short-term Maximal Intensity Efforts in Soccer Players

International Journal of Sports Medicine, 2019
This study examined the relationship between PhA and short-term maximal intensity efforts in soccer players, and was conducted in 99 male soccer players, ages 19–36 years.
H. Nabuco, A. Silva, L. Sardinha, F. B. Rodrigues, C. Tomeleri, F. Ravagnani, E. Cyrino, Christian Ravagnani   +7 more
semanticscholar   +1 more source

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), 2003
This 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 ...
Kwanghee Nam, Hong-Seok Song, P. Mutschler   +2 more
openaire   +2 more sources

Quantum Phase Angles and su(∞)

Journal of Modern Optics, 1991
Abstract The polar decomposition of the su(2) algebra leads to unitary phase operators which do not close to an algebra with the number operator. It is shown that phase and number operators can be embedded into a larger su(2j + 1) algebra with trigonometric structure constants.
openaire   +2 more sources

Association between BIA-derived Phase Angle and Sarcopenia and Improvement in Activities of Daily Living and Dysphagia in Patients undergoing Post-Stroke Rehabilitation

The Journal of Nutrition, Health & Aging, 2022
T. Bise, Y. Yoshimura, H. Wakabayashi, F. Nagano, Y. Kido, S. Shimazu, A. Shiraishi, A. Matsumoto   +7 more
semanticscholar   +1 more source

The decrease in phase angle measured by bioelectrical impedance analysis reflects the increased locomotive syndrome risk in community-dwelling people: The Yakumo study

Modern Rheumatology, 2019
Objectives: The locomotive syndrome (LS) risk test has recently been advocated for the evaluation of physical ability. Phase angle measurement by bioelectrical impedance analysis (BIA) is an indicator of cellular health and muscle mass.
S. Tanaka, K. Ando, Kazuyoshi Kobayashi, Tetsuro Hida, T. Seki, Takashi Hamada, Kenyu Ito, Mikito Tsushima, M. Morozumi, M. Machino, Kyotaro Ota, N. Ishiguro, Y. Hasegawa, S. Imagama   +13 more
semanticscholar   +1 more source

Power-system phase-angle measurements [PDF]

Proceedings of the IEE Part A: Power Engineering, 1958
The paper describes an instrument developed to record the phase variations between two 50c/s signals with a scale of ±12½°. The instrument was used during generator stability tests to record phase variations between the reference busbar voltage and a voltage at a remote point in the system undisturbed by the tests.
openaire   +1 more source

Irreversible Demagnetization Analysis for Multilayer Magnets of Permanent Magnet-Assisted Synchronous Reluctance Machines Considering Current Phase Angle

IEEE transactions on magnetics, 2019
This paper investigates the demagnetization problem of permanent magnets for permanent magnet-assisted synchronous reluctance motors (PMa-SynRM) and applies “demagnetization ratio” as an index to evaluate demagnetization of permanent magnet (PM). The PMa-
Thanh Anh Huynh, M. Hsieh
semanticscholar   +1 more source

Effect of normalization and phase angle calculations on continuous relative phase

Journal of Biomechanics, 2002
The purpose of this investigation was to determine if phase plot normalization and phase angle definitions would have an affect on continuous relative phase calculations. A subject ran on a treadmill while sagittal plane kinematic data were collected with a high-speed (180 Hz) camera.
Nicholas Stergiou, Max J. Kurz
openaire   +3 more sources

Changes in Phase Angle and Handgrip Strength Induced by Suspension Training in Older Women

International Journal of Sports Medicine, 2018
This study aimed to present a suspension exercise training program suitable for older adults and to verify the effect of 12 weeks of training on handgrip strength (HS) and anthropometric and bioelectrical impedance parameters in older adults.
F. Campa, A. Silva, S. Toselli
semanticscholar   +1 more source

The Prognostic Role of Phase Angle in Advanced Cancer Patients: A Systematic Review

Nutrition in clinical practice, 2018
Phase angle (PA) is a ratio between the reactance and resistance obtained by bioelectric impedance analysis and has been interpreted as a cell membrane integrity indicator and a predictor of total body cell mass. A low PA may suggest deterioration of the
Mayane Marinho Esteves Pereira, Mariana dos Santos Campello Queiroz, Nathália Masiero Cavalcanti de Albuquerque, J. Rodrigues, E. Wiegert, L. Calixto-Lima, Lívia Costa de Oliveira   +6 more
semanticscholar   +1 more source