Results 11 to 20 of about 55,529 (261)

A pilot study of the impact of high-frequency chest wall oscillation in chronic obstructive pulmonary disease patients with mucus hypersecretion

open access: yesInternational Journal of COPD, 2011
Indranil Chakravorty1, Kamaljit Chahal2, Gillian Austin21St George's Hospital, London, 2East and North Hertfordshire NHS Trust, Lister Hospital and Primary Care Trust, Stevenage, Hertfordshire, UKIntroduction: Chronic obstructive pulmonary ...
Chakravorty I, Chahal K, Austin G
doaj   +2 more sources

Safety and effectiveness of the high-frequency chest wall oscillation vs intrapulmonary percussive ventilation in patients with severe COPD

open access: yesInternational Journal of COPD, 2018
Antonello Nicolini,1 Bruna Grecchi,2 Maura Ferrari-Bravo,3 Cornelius Barlascini4 1Respiratory Diseases Unit, Hospital of Sestri Levante, Sestri Levante, Italy; 2Rehabilitation Unit, ASL4 Chiavarese, Chiavari, Italy; 3Statistics Unit, ASL4 Chiavarese ...
Nicolini A   +3 more
doaj   +1 more source

Temporal Characteristics of High-Frequency Lower-Limb Oscillation during Freezing of Gait in Parkinson’s Disease

open access: yesParkinson's Disease, 2014
A cardinal feature of freezing of gait (FOG) is high frequency (3–8 Hz) oscillation of the legs, and this study aimed to quantify the temporal pattern of lower-body motion prior to and during FOG.
Don A. Yungher   +6 more
doaj   +2 more sources

Scalp high-frequency oscillation rates are higher in younger children [PDF]

open access: yes, 2021
High-frequency oscillations in scalp EEG are promising non-invasive biomarkers of epileptogenicity. However, it is unclear how high-frequency oscillations are impacted by age in the paediatric population.
Rosch, Richard; https://orcid.org/   +5 more
core   +1 more source

A review of high-frequency oscillation [PDF]

open access: yesCanadian Anaesthetists’ Society Journal, 1984
Mecanismes de transport des gaz. Ventilateurs et circuits. Monitorage. Clearance mucociliaire au cours de l'oscillation a haute frequence.
openaire   +2 more sources

Research on Low-Frequency Oscillation Damping Control of Wind Storage System Based on Pareto and Improved Particle Swarm Algorithm

open access: yesApplied Sciences, 2023
Aiming at the low-frequency oscillation problem of high-proportion wind power and energy storage connected to the power system, this paper establishes a system small signal model according to the matrix similarity theory, which lays a foundation for the ...
Yu Song, Shouyuan Wu
doaj   +1 more source

Generalizability of High Frequency Oscillation Evaluations in the Ripple Band

open access: yesFrontiers in Neurology, 2018
Objective: We examined the interrater reliability and generalizability of high-frequency oscillation (HFO) visual evaluations in the ripple (80–250 Hz) band, and established a framework for the transition of HFO analysis to routine clinical care. We were
Aaron M. Spring   +14 more
doaj   +1 more source

Overview of mechanism and mitigation measures on multi-frequency oscillation caused by large-scale integration of wind power

open access: yesCSEE Journal of Power and Energy Systems, 2019
In recent years, the large-scale integration of renewable energy sources represented by wind power and the widespread application of power electronic devices in power systems have led to the emergence of multi-frequency oscillation problems covering ...
Yongning Chi   +8 more
doaj   +1 more source

A numerical study of an inline oscillating cylinder in a free stream [PDF]

open access: yes, 2011
Simulations of a cylinder undergoing externally controlled sinusoidal oscillations in the free stream direction have been performed. The frequency of oscillation was kept equal to the vortex shedding frequency from a fixed cylinder, while the amplitude ...
Leontini, Justin S.   +5 more
core   +1 more source

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