University Ferhat Abbas of Setif

FFOA: An adaptive swarm optimizer with centered-optimum-bias assessment

The Fennec Fox Optimization Algorithm (FFOA) is introduced as a fennec-inspired adaptive swarm optimizer for continuous optimization tasks. Its primary proposal is algebraically a current-to-promising differential move; successful-hunt memory and remembered food-cache reuse provi...

Propagation of Perfect Laguerre Gaussian Beam in a Turbulent Atmosphere

Optical communication systems rely on reliable transmission of light through the atmosphere, yet atmospheric turbulence poses a significant challenge by introducing distortions and fluctuations that degrade signal quality. Perfect Laguerre–Gaussian (PLG) beams—a class of structur...

A versatile Bacillus esterase reveals a carboxylesterase blueprint for PET intermediate degradation

Abstract The biodegradation of polyethylene terephthalate (PET), and its derived intermediate breakdown products, represents a core focus of multidisciplinary research. While Ideonella sakaiensis PETase (IsPETase) and leaf-compost cutinase (LCC) efficiently depolymerize PET, many...

On the Coexistence of Two Limit Cycles Enclosing a Node in a Class of Planar Differential Systems of Degree Six

ABSTRACT In this paper, we look at a special type of six‐degree polynomial differential systems in the plane. We establish the coexistence of two limit cycles in these systems, both surrounding a single node. It is well known that, for systems of even degree, proving the coexiste...

Photogrammetry-derived metric documentation and proportional analysis of the Gazouli Zaouia lineage mausoleums in Sidi Ouriache, Algeria

Abstract Algerian zawiyas constitute a significant yet still under-documented component of the Maghrebi funerary landscape. Within these religious complexes, funerary architecture preserves spatial configurations transmitted across generations, yet their architectural documentati...

Luteinising Hormone-to-follicle-stimulating Hormone Ratio for Predicting Unexplained Infertility in Patients with Hypovitaminosis D

BACKGROUND: Hypovitaminosis D critically influences reproductive hormones in women of reproductive age. The luteinising hormone (LH)/follicle-stimulating hormone (FSH) ratio predicts poor ovulatory response. OBJECTIVE: To evaluate the correlation between the LH/FSH ratio and hypo...

Optimization of ultrasound-assisted extraction time and solvent to improve phenolic recovery and antioxidant yield from Nigella sativa oil-extraction waste

This study evaluated the phenolic composition and antioxidant activity of raw Nigella sativa crude seeds (NSC) and their post-oil extraction solid byproducts, including defatted seeds (NSD) and extraction residues (NSR), which are typically considered agro-industrial waste. Ultra...