Results 51 to 60 of about 7,895,299 (362)

The combination of phase angle and age has a good diagnostic value for sarcopenia in continuous ambulatory peritoneal dialysis patients

open access: yesFrontiers in Nutrition, 2022
AimsThere are limited studies on phase angle and sarcopenia in continuous ambulatory peritoneal dialysis patients. So, we want to explore the association between phase angle and sarcopenia and find a more sensitive indicator for diagnosing sarcopenia ...
Ye Chen   +5 more
doaj   +1 more source

Parametric Study of an Air Charged Franchot Engine with Novel Hot and Cold Isothermalizers

open access: yesInventions, 2017
The Stirling engine is an external combustion engine that uses heat exchangers to enhance the addition and removal of energy. This makes the engine power-dense but expensive, less efficient and complicated. In this contribution, the Stirling engine based
Jafar M. Daoud, Daniel Friedrich
doaj   +1 more source

Phase angle and metabolic parameters in severely obese patients.

open access: yesNutrición Hospitalaria, 2020
INTRODUCTION obese patients present an inflammatory and metabolic profile that leads to oxidative stress and cellular damage. Phase angle is an indicator of cellular integrity and has been proposed as a prognostic parameter for changes in the metabolic ...
K. Curvello-Silva   +3 more
semanticscholar   +1 more source

Correlation of prefrontal cortical activation with changing vehicle speeds in actual driving: a vector-based functional near-infrared spectroscopy study

open access: yesFrontiers in Human Neuroscience, 2013
Traffic accidents occur more frequently during deceleration than during acceleration. However, little is known about the relationship between brain activation and vehicle acceleration because it has been difficult to measure the brain activation of ...
Kayoko eYoshino   +4 more
doaj   +1 more source

Usefulness of phase angle on bioelectrical impedance analysis as a surveillance tool for postoperative infection in critically ill patients

open access: yesFrontiers in Medicine, 2023
PurposeBioelectrical impedance analysis (BIA) has advantages of obtaining results quickly, safely, reproducibly, and non-invasively. Phase angle (PhA) is one of the parameter of BIA, its values represent the permeability or integrity of cell membrane ...
Gyeo Ra Lee, Eun Young Kim
doaj   +1 more source

Phase Angle Effects on 3-micron Absorption Band on Ceres: Implications for Dawn Mission [PDF]

open access: yes, 2015
Phase angle-induced spectral effects are important to characterize since they affect spectral band parameters such as band depth and band center, and therefore skew mineralogical interpretations of planetary bodies via reflectance spectroscopy. Dwarf planet (1) Ceres is the next target of NASA's Dawn mission, which is expected to arrive in March 2015 ...
arxiv   +1 more source

Association between serum uric acid and phase angle in patients with type 2 diabetes mellitus: A cross-sectional study

open access: yesFrontiers in Endocrinology, 2023
BackgroundThe purpose of this analysis was to investigate the associations between serum uric acid and phase angle in patients with type 2 diabetes mellitus.MethodsIn this retrospective cross-sectional study, we included 200 type 2 diabetes mellitus ...
Yezi Hu, Jie Liu, Hui Jin
doaj   +1 more source

Canonical transformations to action and phase-angle variables and phase operators [PDF]

open access: yesPhysical Review A, 1993
The well-known difficulties of defining a phase operator of an oscillator are considered from the point of view of the canonical transformation to action and phase-angle variables. This transformation turns out to be nonbijective, i.e., it is not a one-to-one onto mapping. In order to make possible the unitarity of its representations in quantum optics
Luis Aina, Alfredo   +1 more
openaire   +5 more sources

The Singular Angle of Nonlinear Systems [PDF]

open access: yesarXiv, 2021
In this paper, we introduce an angle notion, called the singular angle, for stable nonlinear systems from an input-output perspective. The proposed system singular angle, based on the angle between $\mathcal{L}_2$-signals, describes an upper bound for the "rotating effect" from the system input to output signals.
arxiv  

Anthropometric, body composition and behavioural predictors of bioelectrical impedance phase angle in Polish young adults – preliminary results

open access: yesAnnals of Agricultural and Environmental Medicine, 2020
Introduction and objective Bioimpedance analysis (BIA) phase angle (PhA) is an index of the integrity of cells and cellular membranes. The aim of the study was identification of behavioural and anthropometric predictors of PhA in a group of young adults.
Michał Skrzypek   +4 more
doaj   +1 more source

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