Results 81 to 90 of about 249,552 (211)

Estudo teórico-experimental do ponto de operação e proposição de método de dimensionamento para sistemas pneumáticos [PDF]

, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2010Nos últimos anos, diferentes estudos têm sido publicados com o intuito de aperfeiçoar o desempenho ...
Hené, Mauro Damián
core  

Idle Operation with Low Intake Valve Lift in a Port Fuel Injected Engine [PDF]

, 2013
Reducing fuel consumption is a prime objective in the automotive industry in order to meet regulatory and customer demands. Variable valve actuation offers many opportunities for improving the spark ignition engine’s performance in areas such as fuel ...
CLENCI, Adrian, Georges Descombes, Michael Deligant, PODEVIN, Pierre, NICULESCU, Rodica, DELIGANT, Michael, BIZIAC, Adrian, Rodica Niculescu, Pierre Podevin, DESCOMBES, Georges, Bîzîiac, Adrian, Adrian Bîzîiac, Adrian Clenci   +12 more
core   +1 more source

Research on Dynamic Reliability of a Jet Pipe Servo Valve Based on Generalized Stochastic Petri Nets

International Journal of Aerospace Engineering, 2015
The jet pipe servo valve is widely used in the military fields of aviation and ship, whose reliability has obvious randomness and dynamic. However, existing methods are either having complicated theory or analyzing static reliability.
Yuanbo Chu, Zhaohui Yuan, Jia Chen
doaj   +1 more source

Deep Reinforcement Learning‐Based Control for Real‐Time Hybrid Simulation of Civil Structures

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Real‐time Hybrid Simulation (RTHS) is a cyber‐physical technique that studies the dynamic behavior of a system by combining physical and numerical components that are coupled through a boundary condition enforcer. In structural engineering, the numerical components are subjected to environmental loads that become dynamic displacements of the ...
Andrés Felipe Niño, Alejandro Palacio‐Betancur, Piedad Miranda‐Chiquito, Juan David Amaya, Christian E. Silva, Mariantonieta Gutierrez Soto, Luis Felipe Giraldo   +6 more
wiley   +1 more source

Sleep‐disordered breathing in valvular heart disease: A Modifiable comorbidity

Sleep Research, EarlyView.
Abstract Sleep‐disordered breathing (SDB) is highly prevalent among patients with valvular heart disease (VHD) and is independently associated with adverse clinical outcomes. The two major phenotypes—obstructive sleep apnea (OSA) and central sleep apnea (CSA)—exhibit distinct distributions across VHD subtypes. CSA predominates in severe aortic stenosis,
Wu Juan, Chen Ze, Zhang Qun, Chen Qiuyuan, Su Mei, Zhang Xilong, Ding Ning   +6 more
wiley   +1 more source

A High Degree of Cleanliness of the Electric Air Supply Valve Design

MATEC Web of Conferences, 2018
This paper discuss an new type servo valve, aiming at two main defects of performance of globe valve which are commonly used in mine safety cabins in China, in order to bring up a better solution to replace old valves.
Hu Luo
doaj   +1 more source

Dual-valve parallel prediction control for an electro-hydraulic servo system

Science Progress, 2020
To improve the dynamic response performance of a high-flow electro-hydraulic servo system, scholars have conducted considerable research on the synchronous and time-sharing controls of multiple valves.
Shi-jie Su, Yuan-yuan Zhu, Cun-jun Li, Wen-xian Tang, Hai-rong Wang   +4 more
doaj   +1 more source

First Experience With Extravascular Implantable Cardioverter‐Defibrillator Under Deep Sedation

Pacing and Clinical Electrophysiology, EarlyView.
ABSTRACT Background The Extravascular Implantable Cardioverter‐Defibrillator (EV‐ICD) utilizes a substernal lead to provide defibrillation and anti‐tachycardia pacing (ATP) while avoiding transvenous complications. General anesthesia (GA) was applied for implantation procedures in the EV‐ICD pivotal trial and is currently recommended by the ...
Nibras Soubh, Bernhard C. Danner, Ulrich Krause, Matthias J. Müller, Markus Zabel, Gerd Hasenfuß, Constanze Schmidt, Helge Haarmann, Eva Rasenack, Leonard Bergau   +9 more
wiley   +1 more source

Efficient Control of a Piezoelectric Linear Actuator Embedded Into a Servo-Valve for Aeronautic Applications

, 2012
Inside a direct-drive servo-valve (DDV), the motion of the spool controlling the direction of the hydraulic fluid flow is directly actuated by an electrical motor.
Alexandre, Paul, Sente, Paul, Labrique, Francis   +2 more
core   +1 more source

Update on the Pathophysiology, Aetiology and Management of Central Sleep Apnoea

Respirology, Volume 31, Issue 9, Page 873-881, September 2026.
ABSTRACT Central sleep apnoea (CSA) of the periodic breathing type occurs during the transition between wakefulness and stage 1 and 2 non‐REM sleep. In adults at sea level, it occurs most commonly due to advanced heart failure (HF) or chronic opioid use and in ~5% of obstructive sleep apnoea patients initiating CPAP.
Sahan D. Chandrasekara, Matthew T. Naughton   +1 more
wiley   +1 more source