DSpace at UMBB
The institutional repository of the University M'Hamed Bougara Of Boumerdes is a digital archive that contains the scientific output of the University. Dspace manages, preserves and provides access to the academic works of UMBB.
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خصوصية جريمة المضاربة في ظل السياسة الجديدة للتجريم
(جامعة أمحمد بوقرة - بومرداس : كلية الحقوق و العلوم السياسية, 2025) بوقاسم، وسام; حساين، سامية (مشرف)
المضاربة غير المشروعة
جرائم المضاربة
إبرام العقود و النشاط التأميني في قطاع المحروقات
(جامعة أمحمد بوقرة - بومرداس : كلية الحقوق و العلوم السياسية, 2025) القدير، شريفة; (سعيداني، فايزة (مشرف
إبرام العقود
التأمين : المحروقات
Environmental Impacts and Behavioral Adaptations of Honeybees in Algeria: A Review of Apis mellifera intermissa and Apis mellifera sahariensis Characteristics
(Multidisciplinary Digital Publishing Institute (MDPI), 2025) Haider, Yamina; Adjlane, Noureddine; Haddad, Nizar
Honeybees are vital for pollination and the overall health of ecosystems. Since the 18th century, the intricate biology of honeybees has been a subject of scientific inquiry. Understanding their biological and behavioral characteristics is essential for effective beekeeping, honey production, and ecosystem sustainability. This review examines the environmental impact and management practices on the health of local honeybees in Algeria, focusing on Apis mellifera intermissa and Apis mellifera sahariensis. We summarize research findings on genetic diversity, morphometric traits, behavioral characteristics, and adaptation of local honeybees. Additionally, we discuss the threats posed by abiotic and biotic stressors and highlight the importance of conservation and sustainable management. The reviewed studies indicate that environmental factors significantly influence the behavioral characteristics and adaptation of local honeybees. Notably, the hygienic behavior of A. m. intermissa contributes to their resistance against diseases and the Varroa destructor mite. Further research in these areas is important for enhancing our understanding of honeybee health and population dynamics in Algeria, thereby informing strategies for sustainable beekeeping practices
Tetracycline Degradation Under Visible Light Using a New SiNW/CeO2/NiO Composite as a High-Efficiency Photocatalyst
(Springer, 2025) Brik, Afaf; Hadjersi, Toufik; Khaled, Derkaoui; Naama, Sabrina; Bendadel, Karima; Souraya, Bouachma; Benredouane, Soumia; Khadija, Boukhouidem
Recently, extensive research has focused on the purification of antibiotic-contaminated wastewater via photocatalysis techniques. In this context, many types of photocatalysts have been studied. In this work, silicon nanowires (SiNWs) were synthesized and coated with nickel oxide (NiO) and cerium oxide (CeO2) via a hydrothermal technique and used as new photocatalysts to degrade a recalcitrant antibiotic, namely, tetracycline (TC), under visible light irradiation. The prepared samples were characterized by scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV–Vis spectrophotometry (UV–Vis). These characterizations revealed that SiNWs are well coated over their entire length with NiO and CeO2. A 96% degradation rate of TC was achieved within 120 min under visible light irradiation. This enhanced performance is attributed to improved visible light absorption, efficient charge generation, and better charge separation and transfer enabled by the synergistic effects among SiNWs, CeO2, and NiO. The primary species involved in TC degradation were determined by radical scavenging tests to be e⁻, ⋅OH, O2⋅-, and h⁺, which allowed to suggest a reaction mechanism. Finally, this work proposes a new approach to synthesize a powerful photocatalyst that is able to eliminate emerging contaminants from the aquatic environment
Oscillation of non-instantaneous impulsive hybrid-fractional delay differential inclusions with Hilfer-Katugampola derivative
(Springer Nature, 2025) Boudjerida A.; Seba D.; Meskine N.; Benghanem M.
The main concern of this work is to derive new existence results of oscillation and non-oscillation solutions for a version of discontinuous Hybrid fractional differential inclusions with delay and non-instantaneous impulses on a weighted space. At the attendance of delay, we set up some sufficient conditions, and we establish the weak topology (to exclude the compactness condition) and weakly sequentially closed maps to achieve the existing results under a suitable fixed point theorem. Assigned with the upper and lower method, the outcome oscillation behavior is then investigated in the sense of Katugampola fractional derivative. The results are validated by an applicable example. The method used is new and the series of the obtained results are aimed to deepen and expand the previous studies