Results 21 to 30 of about 84,020 (286)

Forced oscillation technique in the detection of smoking-induced respiratory alterations: diagnostic accuracy and comparison with spirometry

Clinics, 2010
INTRODUCTION: Detection of smoking effects is of utmost importance in the prevention of cigarette-induced chronic airway obstruction. The forced oscillation technique offers a simple and detailed approach to investigate the mechanical properties of the ...
Alvaro Camilo Dias Faria, Alessandra Alves da Costa, Agnaldo Jose Lopes, Jose Manoel Jansen, Pedro Lopes de Melo   +4 more
doaj   +1 more source

On the oscillation of a second-order nonlinear di¤erential equations with damping [PDF]

, 2017
WOS: 000406745600033In this paper, we are concerned with the oscillations in forced second order nonlinear differential equations with nonlinear damping terms.
Misir, Adil, Tiryaki, Aydın, Ögrekçi, Süleyman   +2 more
core   +1 more source

Contrasting diagnosis performance of forced oscillation and spirometry in patients with rheumatoid arthritis and respiratory symptoms

Clinics, 2012
OBJECTIVES: Pulmonary involvement in rheumatoid arthritis is directly responsible for 10% to 20% of all mortality. The best way to improve the prognosis is early detection and treatment.
Alvaro Camilo Dias Faria, Wellington Ribeiro Barbosa, Agnaldo José Lopes, Geraldo da Rocha Castelar Pinheiro, Pedro Lopes de Melo   +4 more
doaj   +1 more source

Flow over a cylinder subjected to combined translational and rotational oscillations [PDF]

, 2012
The experimental research reported here employs particle image velocimetry to extend the study of Nazarinia et al. (2009a), recording detailed vorticity fields in the near-wake of a circular cylinder undergoing combined translational and rotational ...
Lo Jacono, David, Nazarinia, Mehdi, Sheridan, John, Thompson, Mark C.   +3 more
core   +2 more sources

Modes of ocean variability in the tropical Pacific as derived from Geosat altimetry [PDF]

, 1994
Satellite-derived (Geosat altimetry) sea surface height anomalies for the period November 1986 to September 1989 were investigated in order to extract the dominant modes of climate variability in the tropical Pacific.
Barnett, Barnett, Blumenthal, Bretherton, Cane, Chao, Chao, Cheney, Cheney, Cheney, Delcroix, Goldenberg, Graham, Hasselmann, Horel, Jiansheng Zou, Kessler, Latif, Latif, Madden, McPhaden, McPhaden, McPhaden, Miller, Miller, Mojib Latif, Münnich, Neelin, Picaut, Rasmusson, Reynolds, Schopf, Springer, Tai, von Storch, White, White, Wyrtki, Wyrtki   +38 more
core   +1 more source

Respiratory oscillometry and functional analyses in patients with idiopathic scoliosis

Brazilian Journal of Medical and Biological Research, 2023
Scoliosis is a condition that affects the spine and causes chest rotation and trunk distortion. Individuals with severe deformities may experience dyspnea on exertion and develop respiratory failure.
C.M.S. Sousa, A.L.C. Pessoa, L.E. Carelli, C.O. Ribeiro, A.J. Lopes, P.L. Melo   +5 more
doaj   +1 more source

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

International 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, Ahmed M. M. Khodier, Heba A. Hassan   +2 more
doaj   +1 more source

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

Discrete 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, Ummul Khair Salma Din, Rokiah Rozita Ahmad, Mohd Salmi Md Noorani   +3 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

Jornal 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, Agnaldo José Lopes, José Manoel Jansen, Pedro Lopes de Melo   +3 more
doaj   +1 more source

Survey on forced oscillations in power system

Journal 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