نتایج جستجو برای: avr system

تعداد نتایج: 2232892  

2009
Anthony Joseph Milazzo Thomas Pannabecker

The goal of the following research project was to perform a three-dimensional reconstruction of selected CDs and associated AVR as they ascend through the IM/OM border, and determine whether AVR in this region coalesce to form giant vascular bundles, or whether they do so in a more dispersed pattern, interacting with components of the interbundle regions. The previously accepted model of vascul...

Journal: :Circulation. Cardiovascular quality and outcomes 2013
Joshua B Goldberg Joseph P DeSimone Robert S Kramer Anthony W Discipio Louis Russo Lawrence J Dacey Bruce J Leavitt Robert E Helm Yvon R Baribeau Gerald Sardella Robert A Clough Stephen D Surgenor Meredith J Sorensen Cathy S Ross Elaine M Olmstead Todd A MacKenzie David J Malenka Donald S Likosky

BACKGROUND The survival of patients who undergo aortic valve replacement (AVR) for severe aortic stenosis with reduced preoperative ejection fractions (EFs) is not well described in the literature. METHODS AND RESULTS Patients undergoing AVR for severe aortic stenosis were analyzed using the Northern New England Cardiovascular Disease Study Group surgical registry. Patients were stratified by...

2012
HERY PURNOMO

This paper presents the settings of automatic voltage regulator (AVR) and power system stabilizer (PSS) on a single machine infinite bus (SMIB) to improve the dynamic stability of the power system. This setting is done by determining the fitness function of AVR (KA) and PSS (KPSS) gain using Particle Swarm Optimization (PSO) algorithm. The main purpose of this setting is to minimize the oscilla...

Journal: :Energy storage 2021

This paper conveys the unified control pattern of frequency and voltage interconnected multi-area power system through automatic load (ALFC) loop regulator (AVR) loop. Each area includes a single-stage reheat thermal plant, combined cycle gas turbine (CCGT) electric vehicles (EVs). Pertinent generation rate constraint for CCGT plant governor dead band is considered. A maiden attempt has been ma...

Journal: :Energies 2023

Voltage regulation is a crucial task for electrical grids in the presence of high penetration levels renewable energies. The generator excitation improves stability power system. An essential tool controlling generators automatic voltage regulator (AVR). It advised to use controller increase reliability an AVR. A survey about different types controllers proposed this paper. Then, novel optimize...

2011
Peter Sauer

A new family of Atmel AVR low-power 32-bit microcontrollers provides higher processing performance, improved accuracy, and more power efficiency for automotive applications. These enhancements enable implementation of new product-differentiating features such as advanced control algorithms, voice control, and capacitive touch sensing (see figure 1). The Atmel AVR UC3C 32-bit microcontroller inc...

2017
Zakeih Chaker Vinay Badhwar Fahad Alqahtani Sami Aljohani Chad J. Zack David R. Holmes Charanjit S. Rihal Mohamad Alkhouli

BACKGROUND Studies assessing the differential impact of sex on outcomes of aortic valve replacement (AVR) yielded conflicting results. We sought to investigate sex-related differences in AVR utilization, patient risk profile, and in-hospital outcomes using the Nationwide Inpatient Sample. METHODS AND RESULTS In total, 166 809 patients (63% male and 37% female) who underwent AVR between 2003 a...

Journal: :Journal of the American College of Cardiology 2004
William T Smith T Bruce Ferguson Thomas Ryan Carolyn K Landolfo Eric D Peterson

OBJECTIVES This study utilizes Markov decision analysis to assess the relative benefits of prophylactic aortic valve replacement (AVR) at the time of coronary artery bypass graft surgery (CABG). Multiple sensitivity analyses were also performed to determine the variables that most profoundly affect outcome. BACKGROUND The decision to perform CABG or concomitant CABG and AVR (CABG/AVR) in asym...

2004
A. Vivian D. L. Arnold

Bacterial pathogens often show great discrimination among potential host plants with regard to their abilities to cause disease. The basis of this race/cultivar specificity has been shown to reside in the matching of specific resistance (R) genes in the plant with determinants called avirulence (avr) genes in the pathogen: recognition in this way between host and pathogen enables the plant to r...

2015
Sameer D Thakur Andrew Cheng Hansraj R Bookun David Lee Chin Siew Lee Xiao Bo Zhang Shivanand Gangahanumaiah Marco Moscarelli Giacomo Bianchi Pier A Farneti Marco Solinas

Background/Introduction Benefits of sutureless aortic valve replacement (AVR) have been established. Most western centres have reported advantages in reduced cardiopulmonary bypass, cross clamp, ventilation, and postoperative recovery time. It has established a role in moderate to high-risk surgical patients requiring an AVR. However, the incidence of postoperative atrial fibrillation (POAF) in...

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