Results 41 to 50 of about 937 (215)

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

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

open access: yesAdvanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

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

Chemoselective Sequential Polymerization: An Approach Toward Mixed Plastic Waste Recycling

open access: yesAdvanced Functional Materials, EarlyView.
Inspired by biological protein metabolism, this study demonstrates the closed‐loop recycling of mixed synthetic polymers via ring‐closing depolymerization followed by a chemoselective sequential polymerizations process. The approach recovers pure polymers from mixed feedstocks, even in multilayer formats, highlighting a promising strategy to overcome a
Gadi Slor   +5 more
wiley   +1 more source

A forced oscillation system for damping derivative measurement in the T-38 trisonic wind tunnel [PDF]

open access: yesScientific Technical Review, 2018
A forced oscillation system for the measurement of damping derivative due to an aircraft or missile model oscillatory motion in a wind tunnel test section is described.
Samardžić Marija   +2 more
doaj  

Dynamics of Periodic Impulsive Collision in Escapement Mechanism

open access: yesShock and Vibration, 2013
Among various non-smooth dynamic systems, the periodically forced oscillation system with impact is perhaps the most common in engineering applications. The dynamical study becomes complicated due to the impact.
Jian Mao, Yu Fu, Peichao Li
doaj   +1 more source

Forced oscillation of piezoceramic cylinder with circumpolarization of material

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012
The nonstationary elasto-electrodynamics problem for an anisotropic piezoceramic cylinder of finite size with circumpolarization of material is considered for the case when the tangential stresses and the electric potential influence on the radial ...
D. A. Shlyakhin
doaj   +3 more sources

Measuring nonequilibrium temperature of forced oscillators [PDF]

open access: yesPhysical Review E, 2003
The meaning of temperature in nonequilibrium thermodynamics is considered by using a forced harmonic oscillator in a heat bath, where we have two effective temperatures for the position and the momentum, respectively. We invent a concrete model of a thermometer to testify the validity of these different temperatures from the operational point of view ...
Hatano, Takahiro, Jou i Mirabent, David,
openaire   +5 more sources

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

open access: yesAdvanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari   +4 more
wiley   +1 more source

On the Effect of Forced-Oscillation Amplitude upon the Flow in a Cubic Cavity Heated Below

open access: yesJournal of Fluid Science and Technology, 2013
The authors numerically investigate the forced-oscillation-frequency responses on flow and thermal characteristics of the thermal convection in a cubic cavity heated from below in the gravitational field, concerning global quantities such as spatially ...
Katsuya HIRATA   +4 more
doaj   +1 more source

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