Tunis El Manar University

The filtration performance of fabrics against particles of viral size: a systematic review

Wearing a mask is part of the comprehensive strategy to suppress transmission of the SARS-CoV-2 virus and respiratory tract infections. Despite available COVID-19 vaccines, wearing a mask has remained one of the simplest and most effective ways. There was, however, little data av...

Contribution of a combined approach using refined enterotyping and non-negative matrix factorization (NMF) to the characterization of the gut microbiota in Tunisia, North Africa

Abstract This pilot study aimed to assess the enhanced capabilities of a combined approach using refined enterotyping and non-negative matrix factorization (NMF) for identifying specific microbiota patterns in healthy adults in Tunisia. Shotgun metagenomic sequencing was performe...

Epiploic–mesenteric knotting as a rare cause of small-bowel obstruction

Abstract Background Epiploic–mesenteric knotting is an exceptionally rare cause of acute small-bowel obstruction. The condition results from entanglement between the greater omentum and the small-bowel mesentery, creating a true knot that may rapidly progress to strangulation and...

Hybrid Topologies on the Real Line II

Given a subset $A \subseteq \mathbb{R}$, the Hattori topology $H(A)$ is a hybrid of the Euclidean and lower-limit topologies, giving every point $a \in A$ a base of Euclidean neighborhoods $(a-\ve, a+\ve)$ and every point $b \not\in A$ a base of lower-limit neighborhoods $[b, b+\...

Realization of unconventional staircase topological Anderson phase transitions

Topological Anderson insulators provide a paradigm for disorder-induced topology, in which the underlying system turns from a trivial to a topological phase. It is widely recognized that the latter disappears at large disorder amplitude. Here, and contrary to the general belief,...

The Association Between Job Stress and Intention to Leave in Healthcare Institutions: A Systematic Review and Meta-Analysis

Background: Job stress is a pervasive issue in modern workplaces and is associated with numerous adverse outcomes, including employees’ turnover intention when stress levels are high. Objective: This study aimed to examine the association between job stress and turnover intention...

Gut Microbiota Signatures and Ecological Network Alterations Associated with Hemodialysis

Hemodialysis (HD) is the most widely used renal replacement therapy for patients with end-stage renal disease (ESRD) and is frequently accompanied by long-term complications that impair quality of life, including metabolic and inflammatory disturbances. Growing evidence suggests...

Native myocardial T1 reference values in a tunisian cohort using MOLLI and SMART1Map

Native T1 values in cardiac magnetic resonance (CMR) are influenced by acquisition sequence, physiological factors, and site-specific variability, complicating clinical interpretation. The absence of population-specific reference values further limits diagnostic accuracy. This st...

Frobenius-Polynomial Second-Order Linear Differential Equations: Structure and Recognition in the Real-Indicial Case

We study equations y′′+P(x)y′+Q(x)y=0, with P,Q∈C(x), that admit two linearly independent local solutions y1=xrA(x) and y2=xsB(x) at the regular singular point 0, where A and B are polynomials and A(0)B(0)≠0. We call these Frobenius-polynomial type (FP) equations and focus on the...

Quantile connectedness between African stock markets, Twitter sentiment index, implied volatilities, financial condition index and economic uncertainty

Purpose This study aims to examine the quantile-based time-frequency spillovers between African stock prices and global uncertainty indicators. Design/methodology/approach The study applies the quantile vector autoregressive connectedness framework to daily data (2012–2023) for n...

Laser-Induced Graphene Electrochemical Sensors for Rapid and Portable Environmental Pollutant Detection

Environmental pollution is a major global challenge that adversely affects human health, biodiversity, and ecosystems. In this regard, the development of portable and wearable sensing technologies has become increasingly important for real-time, on-site monitoring of environmenta...

N-Acetylcysteine, Tiron, and Their Combination: In Vitro Antioxidant and Anti-Inflammatory Activities and Their Protective Effect in a Rat Model of Acetic Acid-Induced Ulcerative Colitis

Ulcerative colitis is characterized by inflammation, oxidative stress, and excessive free radical production. This study investigated the antioxidant, anti-inflammatory, and protective effects of N-acetylcysteine (NAC), Tiron, and their fixed-ratio combination in acetic acid-indu...

Building a genomics-capable cancer workforce: a competency-based framework for education and training in precision oncology

Background The Lancet Oncology Commission on cancer genomics and precision oncology identified workforce capability, education, and training as major constraints to equitable implementation. As genomic and multi-omic technologies become integrated into cancer care, structured app...

Stigma, discrimination-related events, and determinants among adult people living with systemic lupus erythematosus (SLE): Systematic review and indicator-level meta-analysis

BackgroundSystemic lupus erythematosus (SLE) is a complex autoimmune disease with 0.4 million new cases diagnosed annually. With its wide variety of visible and invisible manifestations, people living with SLE report being exposed to stigmatization, which impacts their personal a...

Effect of Different Metal Doping of ZnO Nanoparticles on Photocatalytic Degradation of Dye Wastewater

Undoped ZnO and metal-doped ZnO (ZnO:M) nanoparticles (NPs), with M [Formula: see text] Ca, V and Al, have been synthesized, with the same metal content ([Formula: see text]%), by the sol–gel method. The M-doping effects on the ZnO NPs properties are studied by a variety of techn...

The World Psychiatric Association (WPA) Guideline on Schizophrenia Spectrum Disorders Management for Low- and Middle-Income Countries

There is a pressing need to address the unique challenges of managing Schizophrenia Spectrum Disorders (SSD) in Low- and Middle-Income Countries (LMICs), where mental health resources are scarce and unevenly distributed. To develop this evidence-based guideline, we conducted a sy...

Regime-switching connectedness among European football clubs: a TVP-VAR analysis of volatility states and structural shifts

Purpose This study aims to investigate the dynamic interconnectedness among major publicly listed European football clubs, focusing on how return shocks propagate across club equities and whether these spillovers vary across volatility regimes. Design/methodology/approach Using d...

Fast dynamic simulation and control of a boost DC-DC inverter

Efficient and accurate simulation is essential for the modeling and control of high-frequency DC-DC converters. Conventional numerical integrators require very small time steps to capture fast switching dynamics, leading to high computational cost. This paper introduces a discret...

Case Report: Intestinal Obstruction in Pregnancy Due to a Degenerating Uterine Leiomyoma

<ns5:p>Background Uterine fibroids are the most common benign tumors in women, affecting up to 40–60% of women. Although frequently encountered during pregnancy, complications such as degeneration are uncommon. Conversely, small bowel obstruction (SBO) in pregnancy is a rare but...