Results 31 to 40 of about 4,334,827 (265)

Correlations between forced oscillation technique parameters and pulmonary densitovolumetry values in patients with acromegaly [PDF]

open access: yesBrazilian Journal of Medical and Biological Research, 2015
The aims of this study were to evaluate the forced oscillation technique (FOT) and pulmonary densitovolumetry in acromegalic patients and to examine the correlations between these findings.
G.B. Camilo   +7 more
doaj   +3 more sources

Set of Oscillation Criteria for Second Order Nonlinear Forced Differential Equations with Damping

open access: yesDiscrete Dynamics in Nature and Society, 2014
By employing a generalized Riccati technique and an integral averaging technique, some new oscillation criteria are established for the second order nonlinear forced differential equation with damping.
Ambarka Abdalla Salhin   +3 more
doaj   +1 more source

Interval Oscillation Criteria for Forced Second-Order Nonlinear Delay Dynamic Equations with Damping and Oscillatory Potential on Time Scales

open access: yesInternational Journal of Differential Equations, 2016
We are concerned with the interval oscillation of general type of forced second-order nonlinear dynamic equation with oscillatory potential of the form rtg1xt,xΔtΔ+p(t)g2(x(t),xΔ(t))xΔ(t)+q(t)f(x(τ(t)))=e(t), on a time scale T.
Hassan A. Agwa   +2 more
doaj   +1 more source

Técnica de oscilações forçadas na análise da resposta broncodilatadora em voluntários sadios e indivíduos portadores de asma brônquica com resposta positiva Using the forced oscillation technique to evaluate bronchodilator response in healthy volunteers and in asthma patients presenting a verified positive response

open access: yesJornal Brasileiro de Pneumologia, 2006
OBJETIVO: Analisar, através da técnica de oscilações forçadas, pacientes asmáticos com resposta broncodilatadora positiva pelo laudo espirométrico e comparar esses resultados com os obtidos em indivíduos sadios.
Juliana Veiga Cavalcanti   +3 more
doaj   +1 more source

Survey on forced oscillations in power system

open access: yesJournal of Modern Power Systems and Clean Energy, 2017
The oscillations in a power system can be categorized into free oscillations and forced oscillations. Many algorithms have been developed to estimate the modes of free oscillations in a power system.
Mohammadreza GHORBANIPARVAR
doaj   +1 more source

Evaluation of the forced oscillation technique for the determination of resistance to breathing [PDF]

open access: yesJournal of Clinical Investigation, 1968
Total respiratory resistance (R(T)) was measured by the application of a sine wave of airflow to the mouth at the resonant frequency of the respiratory system. The mean respiratory resistance of 42 normal subjects, measured at a mean functional residual capacity of 3.3 liters, was 2.3, SD +/- 0.5, cm H(2)O/liter per sec, and the resonant frequency was ...
A B, Fisher, A B, DuBois, R W, Hyde
openaire   +2 more sources

Effect of acute and chronic pressure-threshold inspiratory muscle training on upper and lower airway function [PDF]

open access: yes, 2010
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.There is evidence to suggest that inspiratory muscle training (IMT) may influence the functional properties of the muscles of the upper (UA) and lower (LA ...
How, Stephen Christopher
core   +7 more sources

Diagnostic accuracy of respiratory impedance parameters to detect airflow obstruction in adults

open access: yesIndian Journal of Allergy Asthma and Immunology, 2021
OBJECTIVE: The present study was aimed to evaluate the diagnostic accuracy of impedance parameters to detect airflow obstruction and the severity of airflow obstruction in adults. METHODS: The spirometry parameters (forced expiratory volume in 1 s [FEV1],
Sajal De
doaj   +1 more source

The Usefulness of the Forced Oscillation Technique in the Diagnosis of Bronchial Asthma in Children. [PDF]

open access: yesCan Respir J, 2018
The forced oscillation technique (FOT) requires minimal patient cooperation and is useful for children. However, comprehensive values of respiratory impedance at baseline and after the reversibility test have not been definitively confirmed. The aim of this study was to evaluate the basic parameters of FOT reactance (Xrs) and resistance (Rrs) in groups
Starczewska-Dymek L   +2 more
europepmc   +5 more sources

Influence of the ageing process on the resistive and reactive properties of the respiratory system

open access: yesClinics, 2009
INTRODUCTION: In an increasingly old society, the study of the respiratory system changes and new techniques dedicated to older patients are of interest in physiologic studies as well as in the diagnosis of respiratory diseases.
Caio Vinicius Villalón e Tramont   +4 more
doaj   +1 more source

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