Strain, strain rate, and mechanical power: An optimization comparison for oscillatory ventilation

myocardial strain and strain rate imaging: comparison between doppler derived strain imaging and speckle tracking echocardiography

Strain-rate frequency superposition in large-amplitude oscillatory shear.

In a recent work, Wyss [Phys. Rev. Lett. 98, 238303 (2007)] have noted a property of "soft solids" under oscillatory shear, the so-called strain-rate frequency superposition. We extend this study to the case of soft solids under large-amplitude oscillatory shear (LAOS). We show results from LAOS studies in a monodisperse hydrogel suspension, an aqueous gel, and a biopolymer suspension and show ...

Comparison between conventional protective mechanical ventilation and high-frequency oscillatory ventilation associated with the prone position

OBJECTIVE To compare the effects of high-frequency oscillatory ventilation and conventional protective mechanical ventilation associated with the prone position on oxygenation, histology and pulmonary oxidative damage in an experimental model of acute lung injury. METHODS Forty-five rabbits with tracheostomy and vascular access were underwent mechanical ventilation. Acute lung injury was indu...

Prospective, randomized comparison of high-frequency oscillatory ventilation and conventional mechanical ventilation in pediatric respiratory failure.

OBJECTIVE To compare the effectiveness of high-frequency oscillatory ventilation with conventional mechanical ventilation in pediatric patients with respiratory failure. SETTING Five tertiary care pediatric intensive care units. DESIGN A prospective, randomized, clinical study with crossover. PATIENTS Seventy patients with either diffuse alveolar disease and/or airleak syndrome were rando...

Mechanical Behavior of TWIP Steel in High Strain Rate Torsional Test

Advanced high strength steels (AHSS) have recently attracted great attention because of their superior mechanical properties. A modern group of these steels, known as twinning induced plasticity (TWIP) steels, shows a unique combination of strength and ductility even at high rates of strain. In order to examine the functionality of such steels in dynamic loading conditions, their mechanical beh...