Investigating the impact of drill material on hole quality in jute/palm fiber reinforced hybrid composite drilling with uncertainty analysis.

This study presents a method for modelling, predicting, and evaluating the impact of drill materials on the drilling process of hybrid palm/jute polyester composites, with the aim of enhancing hole quality regarding delamination, circularity, and cylindricity. Three drill materials, including High-Speed Steel (HSS), 5 % Cobalt-coated High-Speed Steel (HSS-Co5), and Solid Carbide drills were tested, and their impacts on drilling performance were assessed. Through thorough experimentation and statistical analysis, significant differences in results were observed between HSS drills and both HSS-Co5 and Solid Carbide drills.

Temporal trends and prognostic impact of reperfusion modalities in Tunisian patients presenting with ST-elevation myocardial infarction: A 20-year analysis.

Introduction: With the advent of reperfusion therapies, management of patients presenting with ST-elevation myocardial infarction (STEMI) has witnessed significant changes during the last decades.

Aim: We sought to analyze temporal trends in reperfusion modalities and their prognostic impact over a 20-year period in patients presenting with STEMI the Monastir region (Tunisia).

Methods: Patients from Monastir region presenting for STEMI were included in a 20-year (1998-2017) single center registry.

ST-segment Elevation Myocardial Infarction in North African Women: Results From a Twenty-year Experience.

Background: Coronary artery disease remains the most common cause of morbidity and mortality in the general population. Several studies in developed countries have reported a gender-related difference in ST-segment elevation myocardial infarction (STEMI) in terms of risk factors, clinical presentation, delays in management, therapeutic modalities, and in-hospital as well as one-year outcomes. Data from non-developed countries about women with STEMI remain rare.

Cardiac iron overload detection using longitudinal strain in asymptomatic children with beta thalassemia major.

Cardiomyopathy mediated by iron disposition in cardiomyocytes is a dreadful cause of morbidity and mortality in patients with beta thalassemia major (BTM). Conventional transthoracic echocardiography (TTE) parameters are preserved at late stages of cardiomyopathy induced by iron overload. Therefore, cardiac imaging modalities based on myocardial deformation such as strain imaging are used for early detection of cardiac iron overload.

Mid-term subclinical myocardial injury detection in patients who recovered from COVID-19 according to pulmonary lesion severity.

Background: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV 2) may cause damage to the cardiovascular system during the acute phase of the infection. However, recent studies reported mid- to long-term subtle cardiac injuries after recovering from acute coronavirus disease 2019 (COVID-19). This study aimed to determine the relationship between the severity of chest computed tomography (CT) lesions and the persistence of subtle myocardial injuries at mid-term follow-up of patients who recovered from COVID-19 infection.

Design and Rationale of the National Tunisian Registry of Percutaneous Coronary Intervention: Protocol for a Prospective Multicenter Observational Study.

Background: Coronary artery diseases remain the leading cause of death in the world. The management of this condition has improved remarkably in the recent years owing to the development of new technical tools and multicentric registries.

Objective: The aim of this study is to investigate the in-hospital and 1-year clinical outcomes of patients treated with percutaneous coronary intervention (PCI) in Tunisia.

Clinical presentation, radiological findings and treatment options in Hughes-Stovin syndrome.

Hughes-Stovin syndrome is a rare disease characterized by thrombophlebitis associated with arterial or bronchial aneurysms. Even though it was described first in 1911, it is scarcely reported in the literature. Hughes-Stovin syndrome diagnosis is based on clinical manifestations as well as radiological findings.

Long-term predictors of death among Tunisian patients presenting for non ST-elevation acute coronary syndrome.

Background: Coronary artery disease is the leading cause of death in emerging countries. Contemporary data about clinical profile and prognosis in Tunisian patients presenting for non ST-elevation acute coronary syndrome (NSTE-ACS) are lacking.

Aim: We sought to study the risk profile and 3-year mortality predictors in Tunisian patients presenting for NSTE-ACS in the contemporary setting.

Left atrial appendage closure with Watchman device: Insights from the first-ever Tunisian experience and six-year follow-up.

Background: Stroke is a major complication of nonvalvular atrial fibrillation (AF). Despite its proven efficacy in stroke prevention, oral anticoagulation (OAC) is associated to a significant increase in bleeding complications. New techniques such as percutaneous left atrial appendage (LAA) closure were developed.

A Case of Behçet Disease Myocarditis Documented Using Cardiac Magnetic Resonance Imaging.

Acute myocarditis is extremely rare in patients with Behçet disease. Here we report a case of a 32-year-old man with a history of oral ulcerations who was admitted for fever and chest pain. On examination, he had bipolar ulcers with pseudofolliculitis and a positive pathergy test.

Acute coronary syndrome: factors predicting smoking cessation.

Background: Few randomized controlled trials have examined the efficacy time of smoking cessation in hospitalized patients with acute coronary syndrome, either during hospitalization or after discharge.

Aims: To assess smoking cessation rates at 24 weeks among patients with acute coronary syndrome. Group A had begun nicotine replacement therapy during hospitalization, and Group B after discharge.

Machinability Study of Hardened 1045 Steel When Milling with Ceramic Cutting Inserts.

Intermittent machining using ceramic tools such as hard milling is a challenging task due to the severe mechanical shock that the inserts undergo during machining and the brittleness of ceramic inserts. This study investigates the machinability of hardened steel AISI 1045 during face milling using SiAlON and whisker (SiCW) based ceramic inserts. The main focus seeks to identify the effects of cutting parameters, milling configuration, edge preparation and work material hardness on machinability indicators such as resultant cutting force, power consumption and flank tool wear.

Prognostic value of hyperglycemia on-admission in diabetic versus non-diabetic patients presenting with ST-elevation myocardial infarction in Tunisia.

Background: Hyperglycemia on-admission is a powerful predictor of adverse events in patients presenting for ST-elevation myocardial infarction (STEMI).

Aim: In this study, we sought to determine the prognostic value of hyperglycemia on-admission in Tunisian patients presenting with STEMI according to their diabetic status.

Methods: Patients presenting to our center between January 1998 and September 2014 were enrolled.

Hughes-Stovin syndrome revealing the presence of Behçet's Disease.

Background: Hughes-Stovin Syndrome (HSS) is a rare clinical disorder characterized by deep venous thrombosis and multiple pulmonary and/or bronchial aneurysms. Aneurysms in systemic circulation can also be seen.

Case Presentation: We report the first case of HSS with aortic aneurysm in a 55-year-old man who initially presented with deep venous thrombosis.

Prevalence and prognostic significance of anemia in patients presenting for ST-elevation myocardial infarction in a Tunisian center.

Background: Anemia on admission is a powerful predictor of major cardiovascular events in patients presenting for acute coronary syndromes. We sought to determine the prevalence and prognostic impact of anemia in patients presenting for ST-elevation myocardial infarction (STEMI).

Methods: We analyzed data from a Tunisian retrospective single center STEMI registry.

Clinical features and prognosis of infective endocarditis in children: Insights from a Tunisian multicentre registry.

Background: Infective endocarditis (IE) is a rare condition in the paediatric setting. No data on the epidemiology and prognosis of IE in children are available from North African countries.

Aim: To investigate the epidemiological profile and prognosis of IE in children in Tunisia.

Risk profile and in-hospital prognosis in elderly patients presenting for acute ST-elevation myocardial infarction in the Tunisian context.

Objectives: Little is known about the risk profile and in-hospital prognosis of elderly patients presenting for ST-elevation myocardial infarction (STEMI) in Tunisia. We sought to determine in-hospital prognosis of elderly patients with STEMI in a Tunisian center.

Methods: The study was carried out on a retrospective registry enrolling 1403 patients presenting with STEMI in a Tunisian center between January 1998 and January 2013.

PCSK9 polymorphism in a Tunisian cohort: identification of a new allele, L8, and association of allele L10 with reduced coronary heart disease risk.

The c.61_63dupCTG (L10) allele of rs72555377 polymorphism in PCSK9 has been reported to be associated with low-density lipoprotein-cholesterol (LDL-C) levels and with a decreased risk of coronary artery disease (CAD). We investigated the effect of two known alleles for rs72555377, L10 and L11, on the risk of CAD in a Tunisian cohort (218 patients diagnosed by angiography and 125 control subjects).

Effect of E670G Polymorphism in PCSK9 Gene on the Risk and Severity of Coronary Heart Disease and Ischemic Stroke in a Tunisian Cohort.

The association of E670G (rs505151) polymorphism in PCSK9 gene with an increased risk of coronary artery disease (CAD) and ischemic stroke (IS) was reported in previous studies. We investigated the effect of the E670G (rs505151) on the risk of CAD and IS in a Tunisian cohort. Genotyping of the PCSK9 E670G was performed using polymerase chain reaction (PCR)-based restriction fragment length polymorphism (RFLP) and then confirmed by direct sequencing.

Surface Finish and Residual Stresses Induced by Orthogonal Dry Machining of AA7075-T651.

The surface finish was extensively studied in usual machining processes (turning, milling, and drilling). For these processes, the surface finish is strongly influenced by the cutting feed and the tool nose radius. However, a basic understanding of tool/surface finish interaction and residual stress generation has been lacking.