University of Abou Bekr Belkaïd

A hierarchical ASM1 calibration framework under limited data conditions: application to a municipal WWTP in Algeria

ABSTRACT Flowchart of the calibration workflow, from plant data and ASM1/BSM1 modelling with 19 parameters, through PRCC screening to 13 and Sobol analysis to 8, to GA and PSO calibration and model validation. This paper presents a hierarchical ASM1 calibration framework applied...

Design and Mechanical Analysis of a 2-in-1 Integrated Self-Cleaning Particulate Filter and Acoustic Shell Damper for Emerging Markets

Title: Design and Mechanical Analysis of a 2-in-1 Integrated Self-Cleaning Particulate Filter and Acoustic Shell Damper for Emerging Markets Author: Mohamed Hadj Said, M.Sc. (Department of Mechanical Engineering, Abou Bekr Belkaid University, Tlemcen, Algeria) Executive Summary I...

A coupled one-dimensional model for piping erosion under constant pressure drop

Internal erosion is a critical failure mechanism in earth structures. This paper presents a coupled one-dimensional hydraulic-transport-erosion model for pressurised piping under imposed inlet and outlet pressures. The reduced-order framework enables rapid parametric screening, b...

Robust Half‐Metallicity and High Curie Temperature in Inverse‐Heusler Ti 2 Co 1− x Ni x In Alloys: A First‐Principles Study

A first‐principles investigation of inverse‐Heusler Ti 2 Co 1− x Ni x In alloys ( x = 0, 0.25, 0.50, 0.75, and 1) is performed to examine the robustness of half‐metallicity under Co → Ni substitution. Spin‐polarized calculations show that the ferromagnetic XA‐type configuration i...

Angiotensin-Converting Enzyme (ACE) and ABO Polymorphisms in Schizophrenia: Risk Factors and Age-of-Onset Stratification in an Algerian Population

North African populations remain underrepresented in genomic studies of schizophrenia. This case-control study evaluated the ACE I/D polymorphism and ABO blood group phenotypes as candidate risk factors in an Algerian cohort, with stratification by age of onset. This case-control...

Development of a Lightweight SAR Semantic Segmentation Framework with ASFEM for Monitoring Pastoral Ecosystems

Abstract Synthetic Aperture Radar (SAR) provides reliable land-cover observations under varying illumination and weather conditions, but semantic segmentation remains challenging because of speckle noise and heterogeneous backscatter. This study adapts the lightweight PP-LiteSeg...

Contribution to the knowledge of the distribution of bats (Chiroptera) in Algeria

Algeria is the largest country in Africa and for the most part has not yet been surveyed for bat species. To contribute to the knowledge of the distribution of Algerian bat fauna, between 2011 and 2026 we surveyed 70 sites from 19 provinces across the country, mostly roost sites...

Weighted gradient estimates and refined existence results for a Hardy-type elliptic equation

Abstract We review Dirichlet-type problems of the form $$ -\Delta u=\lambda \frac{u}{|x|^2}+ g(\cdot ,\nabla u) \quad \text {in }\Omega ,\qquad u=0\ \text {on }\partial \Omega , $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>-</mml:mo> <mml:mi>Δ</...

Exploring the Impact of Extraction Methods on the Nutritional and Sensory Profiles of Argan Oil from Mostaganem Kernels

Argan oil (Argania spinosa L.) is a culturally and economically significant product in North Africa, yet little is known about how extraction practices shape its nutritional and sensory qualities. The present study compares mechanical cold pressing with solvent extraction (diethy...