Publications associées à Atmosphère (unité)

Modulation of Pulsatile Left Ventricular Afterload by Renal Denervation in Heart Failure With Preserved Ejection Fraction

Nikolaos Stergiopoulos, Stamatia Zoi Pagoulatou

Background:Arterial stiffening contributes to hemodynamic derangements in heart failure with preserved ejection fraction (HFpEF). We sought to investigate the impact of renal denervation on pulsatile left ventricular loading in patients with HFpEF and hype ...

Lippincott Williams & Wilkins2023

Folded-Tube Soft Pneumatic Actuators for Bending

Wyatt Marshall Felt

This article presents a model and experimental results for a new class of bending soft pneumatic actuators (SPAs) made from a single section of thin-walled flexible tubing. The actuator is formed by creasing the tubing into fin-like rectangular folds and i ...

MARY ANN LIEBERT, INC2019

Modeling Vacuum Bellows Soft Pneumatic Actuators with Optimal Mechanical Performance

Jamie Paik, Matthew Aaron Robertson, Wyatt Marshall Felt

This paper presents the concept and model of "Vacuum Bellows," a cylindrical membrane-reinforced contractile vacuum soft pneumatic actuator (V-SPAs). These actuators consist of a tubular membrane connected to a series of interior rigid rings periodically s ...

2018

Results of CO2 Laser-assisted Deep Sclerectomy as Compared With Conventional Deep Sclerectomy

André Mermoud, Sylvain Roy

Purpose: To evaluate the efficacy of CO2 laser-assisted sclerectomy surgery (CLASS) compared with classic nonpenetrating deep sclerectomy (NPDS) with implant in medically uncontrolled glaucoma patients. Materials and Methods: Patients who underwent primary ...

Lippincott, Williams & Wilkins2016

In Vivo Testing of a Novel Adjustable Glaucoma Drainage Device

Nikolaos Stergiopoulos, André Mermoud, Sylvain Roy, Adan Villamarin, Stéphane Bigler

PURPOSE. We report on the in vivo testing of a novel noninvasively adjustable glaucoma drainage device (AGDD), which features an adjustable outflow resistance, and assess the safety and efficiency of this implant. METHODS. Under general anesthesia, the AGD ...

Association for Research in Vision and Ophthalmology2014

Intercomparison of pressure standards (Au, Pt, Mo, MgO, NaCl and Ne) to 2.5 Mbar

Susannah McGregor Dorfman

We have performed a series of co-compression experiments on Au, Pt, Mo, MgO and NaCl to extend internally consistent pressure calibration and characterize shear strength of pressure media to 2.5 Mbar. Measured unit cell volumes of calibrants show differenc ...

Amer Geophysical Union2012

Autonomous effects of shear stress and cyclic circumferential stretch regarding endothelial dysfunction and oxidative stress: an ex vivo arterial model

Nikolaos Stergiopoulos, Rafaela Fernandes Da Silva, Paolo Silacci, Tyler Nerton Thacher

Cyclic circumferential stretch and shear stress caused by pulsatile blood flow work in concert, yet are very different stimuli capable of independently mediating endothelial function by modulating eNOS expression, oxidative stress (via production of supero ...

American Soc Mechanical Engineers, Three Park Avenue, New York, Ny 10016-5990 Usa2009