Unit Operation
Mostrando 1-12 de 203 artigos, teses e dissertações.
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1. Minimal Invasive Thoracoscopic Mitral Valve Surgery
ABSTRACT Introduction: The totally thoracoscopic approach for mitral valve (MV) disease is a minimally invasive method. We investigated the procedure’s feasibility, safety and effectiveness when it was performed by an experienced operator. Methods: We retrospectively analysed 96 consecutive patients with MV disease treated between March 2016 and November
Brazilian Journal of Cardiovascular Surgery. Publicado em: 2022
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2. Evaluation of Surgical Outcomes of Type A Intramural Hematoma
Abstract Introduction: In this study, we aimed to retrospectively evaluate the results of type A intramural hematoma (TA-IMH) cases that underwent ascending aortic surgery. Methods: One hundred ninety-four patients who underwent aortic surgery between 2010 and 2018 were included in this study. TA-IMH was differentiated according to tomography angiographic
Brazilian Journal of Cardiovascular Surgery. Publicado em: 2022
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3. Early- and Long-Term Outcomes of Mitral Valve Repair in a Low-Volume Centre in the Caribbean
Abstract Introduction: This study examines early- and long-term outcomes of mitral valve repairs in a low-volume cardiac surgery centre in the Caribbean. Methods: Ninety-six consecutive patients underwent mitral valve repair from April 2009 to December 2018. Patients were divided into two groups: functional mitral regurgitation requiring simple mitral annu
Brazilian Journal of Cardiovascular Surgery. Publicado em: 2022
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4. Preoperative Arterial and Venous Cannulation in Redo Cardiac Surgery: From the Safety and Cost-effectiveness Points of View
Abstract Objective: To investigate the safety and cost-effectiveness of preoperative cannulation and conventional approach techniques. Methods: Sixty-one patients who underwent redo open cardiac procedures between September 2015 and November 2018 were divided into two groups - Group A (n: 30), patients who underwent conventional cannulation after sternotom
Braz. J. Cardiovasc. Surg.. Publicado em: 2020-12
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5. Sufentanil Reduces Emergence Delirium in Children Undergoing Transthoracic Device Closure of VSD After Sevoflurane-Based Cardiac Anesthesia
Abstract Objective: The aim of this study was to evaluate whether sufentanil can reduce emergence delirium in children undergoing transthoracic device closure of ventricular septal defect (VSD) after sevoflurane-based cardiac anesthesia. Methods: From February 2019 to May 2019, 68 children who underwent transthoracic device closure of VSD at our center wer
Braz. J. Cardiovasc. Surg.. Publicado em: 2020-10
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6. Comparison of the operative and postoperative effects of del Nido and blood cardioplegia solutions in cardiopulmonary bypass surgery
Abstract Objective: Our goal was to compare the operative and postoperative effects of del Nido cardioplegia (DN group) and blood cardioplegia (BC group) performed in cardiac surgery. Methods: A total of 83 patients were included, separated into DN group and BC group. The operative and postoperative effects of the two groups were compared for the first 24
Braz. J. Cardiovasc. Surg.. Publicado em: 2020-10
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7. Pacemaker Implantation in Dextrocardia with Congenitally Corrected Transposition of the Great Arteries: A Case Report
Abstract Objective: Our goal was to compare the operative and postoperative effects of del Nido cardioplegia (DN group) and blood cardioplegia (BC group) performed in cardiac surgery. Methods: A total of 83 patients were included, separated into DN group and BC group. The operative and postoperative effects of the two groups were compared for the first 24
Int. J. Cardiovasc. Sci.. Publicado em: 2020-10
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8. Editorial Comment: Novel semirigid ureterorenoscope with irrigation and vacuum suction system: introduction and initial experience for management of upper urinary calculi
Abstract Objective: Our goal was to compare the operative and postoperative effects of del Nido cardioplegia (DN group) and blood cardioplegia (BC group) performed in cardiac surgery. Methods: A total of 83 patients were included, separated into DN group and BC group. The operative and postoperative effects of the two groups were compared for the first 24
Int. braz j urol.. Publicado em: 2020-10
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9. Investigation of the Relationship between Cerebral Near-Infrared Spectroscopy Measurements and Cerebrovascular Event in Coronary Artery Bypass Grafting Operation in Patients without Carotid Stenosis and Patients with Carotid Stenosis below Surgical Margins
Abstract Objectives: Stroke is an important cause of mortality and morbidity in surgery. In the present study, we examined the cerebral oximetry values of patients with carotid artery stenosis who did not present surgical indications and those who did not present carotid artery stenosis in coronary artery bypass grafting (CABG) surgery by comparing their ce
Braz. J. Cardiovasc. Surg.. Publicado em: 2020-08
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10. Increased power efficiency in mining by using high-fidelity haul truck simulation
Abstract The current economic and political scenario in Brazil has allowed small, medium and large companies to adopt cost cutdown and productivity increase strategies. Diesel fuel consumption by off-highway haul trucks stands for one of the largest costs at the Sossego Mine operational management department. Based on this fact, as well as on the 8% increase
REM, Int. Eng. J.. Publicado em: 2020-03
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11. Proposal process management at the plant operation applied to the generating unit shutdown process of Itaipu Binacional
Resumo A Gestão de Processos é um modelo que possibilita a gestão funcional dos processos internos, transversais ou não, de uma organização. Possibilita o controle adequado dos recursos, mapeamento das funções e atividades, e tem por fim a melhoria dos resultados com sustentabilidade. Alinhada a tais objetivos, à Área de Operação da Usina Itaipu
Gest. Prod.. Publicado em: 20/01/2020
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12. INTEGRATING REAL TIME OPTIMIZATION AND MODEL PREDICTIVE CONTROL OF A CRUDE DISTILLATION UNIT
Abstract This work reports the integration of Real Time Optimization and Model Predictive Control in the multi-layer control structure of an existing Crude Distillation Unit (CDU) of an oil refinery. The MPC considers output control zones and targets for the inputs or outputs. Both the infinite horizon and the finite output horizon controllers were tested. T
Braz. J. Chem. Eng.. Publicado em: 09/12/2019