Publications by authors named "Bahri M"

Coronavirus disease 2019 (COVID-19) has been associated with a significant fatality rate and persistent evolution in immunocompromised patients. In this prospective study, we aimed to determine the duration of excretion of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in 37 Tunisian patients with hematological malignancies (40.5% with lymphoma and 37.

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Background: Spontaneous splenic rupture is a rare life-threatening finding with a challenging diagnosis which is largely ignored in the literature. Hematological disorders such as afibrinogenemia are reported to cause bleeding disorders mostly cerebral hemorrhage. Despite being a life-threatening condition, data about spontaneous splenic rupture in patients with Afibrinogenemia remain scarce.

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Magnetic skyrmion random switching and structural stability are critical limitations for storage data applications. Enhancing skyrmions' magnetic properties could improve their thermal structural stability. Hence, micromagnetic calculation was carried out to explore the thermal nucleation and stability of skyrmions in magnetic nanodevices.

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Background: Older adults with multiple sclerosis (MS) face unique challenges arising from age-related changes in MS pathophysiology and overlapping geriatric syndromes. There is a need for geriatrics-focused multidisciplinary care for the rapidly growing older MS population.

Objective: To design and implement a geriatric multidisciplinary clinic for older adults with MS.

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Micromirrors have recently emerged as an essential component in optical scanning technology, attracting considerable attention from researchers. Their compact size and versatile capabilities, such as light steering, modulation, and switching, are leading them as potential alternatives to traditional bulky galvanometer scanners. The actuation of these mirrors is critical in determining their performance, as it contributes to factors such as response time, scanning angle, and power consumption.

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  • - Systemic lupus erythematosus (SLE) is a chronic autoimmune disease that predominantly affects females, but this case highlights an unusual presentation in a 16-year-old male with severe symptoms.
  • - The patient's condition included hemorrhagic syndrome, pancytopenia, prolonged fever, and cardiac tamponade, leading to the eventual diagnosis of SLE.
  • - Treatment involved pulse therapy with dexamethasone, immunoglobulin, and pericardiocentesis, resulting in a positive clinical outcome, emphasizing the complexities in diagnosing and managing SLE-related complications.
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  • Carotid blowout syndrome (CBS) is a serious complication in patients with head and neck cancer, and this study evaluates the safety and outcomes of two different treatment methods: deconstructive embolization and reconstructive stenting.
  • From 80 cases analyzed, the CBS recurrence rate was found to be 23.8%, with most recurrences happening within 90 days after the initial event, highlighting a significant challenge in managing this condition.
  • The findings suggest that reconstructive stenting is associated with a higher rate of CBS recurrence (58.3%) compared to deconstructive methods (17.6%), indicating the need for careful monitoring and potential advancements in treatment strategies to improve patient outcomes.
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In this study, we investigate the thermal pinning and depinning behaviors of vortex domain walls (VDWs) in constricted magnetic nanowires, with a focus on potential applications in storage memory nanodevices. Using micromagnetic simulations and spin transfer torque, we examine the impacts of device temperature on VDW transformation into a transverse domain wall (TDW), mobility, and thermal strength pinning at the constricted area. We explore how thermal fluctuations influence the stability and mobility of domain walls within stepped nanowires.

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  • The study highlights the first experimental use of covalent organic frameworks (COFs) for detecting sulfur dioxide (SO2), showcasing SonoCOF-9 as a promising material.
  • SonoCOF-9 achieved a reversible SO2 sorption capacity of 3.5 mmol g-1 at 1 bar and 298 K, with good performance over multiple cycles.
  • The research combines experimental findings with molecular simulations, indicating that SonoCOF-9 interacts strongly with SO2, making it suitable for detecting low concentrations of the gas (as low as 0.0064 ppm).
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Introduction: Working memory (WM) as one of the executive functions is an essential neurocognitive ability for daily life. Findings have suggested that aging is often associated with working memory and neural decline, but the brain structures and resting-state brain networks that mediate age-related differences in WM remain unclear.

Methods: A sample consisting of 252 healthy participants in the age range of 20 to 70years was used.

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Background: This research focuses on identifying the characteristics of the digital nomad phenomenon, which is growing increasingly prevalent today. This study aims to bridge the gap between the findings of the digital nomad data analysis (from the direction of movement, responses, and sentiment of society) and the existing migration theories.

Method: Using qualitative method, this study employs a qualitative analysis performed with the Social Network Analysis (SNA) to calculate the betweness centrality of 1394 tweets gathered between April and October 2019 from the X, when this phenomenon was a top concern on numerous platforms.

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  • Nanosizing materials like graphene and quantum dots leads to unique properties; the study introduces two nanoscale-covalent organic frameworks (nano-COFs) that excel in photocatalytic hydrogen production.
  • These nano-COFs demonstrate improved water dispersibility and light absorption due to their smaller size, with one achieving a notable hydrogen evolution rate of 392.0 mmol g h, one of the highest for any organic photocatalyst.
  • The research highlights a reverse concentration effect on photocatalytic activity and reveals a molecule-like excitonic behavior in these nanoscale structures, paving the way for more efficient organic photocatalysts in solar fuel applications.
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In the future, DW memory will replace conventional storage memories with high storage capacity and fast read/write speeds. The only failure in DW memory arises from DW thermal fluctuations at pinning sites. This work examines, through calculations, the parameters that might help control DW thermal stability at the pinning sites.

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This work implements the recently developed nth state Markovian jumping particle swarm optimisation (PSO) algorithm with local search (NS-MJPSOloc) awareness method to address the economic/environmental dispatch (EED) problem. The proposed approach, known as the Non-dominated Sorting Multi-objective PSO with Local Best (NS-MJPSOloc), aims to enhance the performance of the PSO algorithm in multi-objective optimisation problems. This is achieved by redefining the concept of best local candidates within the search space of multi-objective optimisation.

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Objectives: This study aimed to develop and validate the OSABSS (Objective Structured Assessment of Basic Surgical Skills), a modified Objective Structured Clinical Examination (OSCE), to assess basic surgical skills in residents.

Design: A developmental study conducted in two phases. Basic skills were identified through literature review and gap analysis.

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Electrospun polymeric nanofibers are essential in various fields for various applications because of their unique properties. Their features are similar to extracellular matrices, which suggests them for applications in healthcare fields, such as antimicrobials, tissue engineering, drug delivery, wound healing, bone regeneration, and biosensors. This review focuses on the synthesis of electrospun polymeric nanofibers, their surface modification, and their biomedical applications.

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Background: This study examined the association between Adverse Childhood Experiences (ACEs) and Gambling Severity (gambling severity), considering the mediating roles of internalizing, externalizing, and attention among youth online gamblers.

Methods: 762 youth (age= 15.03 ± 2.

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The transformation of two-dimensional (2D) covalent-organic frameworks (COFs) into three-dimensions (3D) is synthetically challenging, and it is typically addressed through interlayer cross-linking of alkene or alkyne bonds. Here, we report the first example of the chemical reconstruction of a 2D COF to a 3D COF with a complete lattice rearrangement facilitated by base-triggered boron hybridization. This chemical reconstruction involves the conversion of trigonal boronate ester linkages to tetrahedral anionic spiroborate linkages.

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Meningeal infiltration in children with B acute lymphoblastic leukemia is one of the most serious complications. Timely diagnosis not only significantly enhances treatment efficacy but also leads to improve patient outcome and reduce risk of relapse. This is particularly crucial in low to middle income countries facing health constraints, where optimizing resources is essential.

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The coupled fractional Wigner-Ville distribution is a more general version of the fractional Wigner-Ville distribution. Main properties including boundedness, Moyal's formula and inversion formula are studied in detail for the transformation. Additionally, the relation of the coupled fractional Wigner-Ville distribution with the two-dimensional Fourier transform is studied.

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Epilepsy is a neurological disorder characterized by overstimulation of neurotransmitters and uncontrolled seizures. Current medications for epilepsy result in adverse effects or insufficient seizure control, highlighting the necessity to develop alternative therapies. Cannabidiol (CBD), derived from cannabis plants, has been popularly explored as an alternative.

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Magnesium batteries attract interest as alternative energy-storage devices because of elemental abundance and potential for high energy density. Development is limited by the absence of suitable cathodes, associated with poor diffusion kinetics resulting from strong interactions between Mg and the host structure. VPS is reported as a positive electrode material for rechargeable magnesium batteries.

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Background: Disconnected consciousness describes a state in which subjective experience (i.e., consciousness) becomes isolated from the external world.

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  • Zebrafish are being extensively used to study bone development and diseases, emphasizing the need to understand how osteoblasts differentiate and function.
  • Researchers isolated specific osteoblast subpopulations from young zebrafish to examine their unique genetic and signaling characteristics.
  • Mutations in genes related to extracellular matrix proteins showcased significant alterations in skeletal structure and mineral density in zebrafish, underlining the proteins' crucial role in bone development and maintenance.
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Fast cation transport in solids underpins energy storage. Materials design has focused on structures that can define transport pathways with minimal cation coordination change, restricting attention to a small part of chemical space. Motivated by the greater structural diversity of binary intermetallics than that of the metallic elements, we used two anions to build a pathway for three-dimensional superionic lithium ion conductivity that exploits multiple cation coordination environments.

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