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    القانون الجزائي للأعمال
    (جامعة سوق أهراس, 2025-09-29) دردار نادية
    القانون الجزائي للاعمال هو قانون متشعب يتضمن مجموعة من القوانين و هو حديث النشأة مقارنة بالقوانين الاخرى
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    Etude Anatomique et Histologique de l’évolution dans l’ontogénèse de la Prostate chez le Dromadaire de la région d’El Oued (sud-est de l’Algérie)
    (2025-07-22) AIDOUDI HAFIZA
    This study explores the morphological, histological and biochemical development of the prostate gland in dromedaries during the pre- and postnatal phases. By analysing 75 prostates of dromedaries from different age groups, collected in Algeria, and measuring PSA (Prostate Specific Antigen)in 30 dromedaries aged less then year to 5 years, we characterized the structural, functional and biochemical transformations of this organ. Our results show a dynamic evolution of the prostate, marked by key stages: initiation of epithelial secretory activity, formation of the lobes, capsule thickening and development of interlobular connective tissue. These changes are closely related to the age of the animal and reach their peak at puberty. Moreover, PSA assay reveals a gradual increase in levels of this protein between 2 and 5 years, suggesting a continuous maturation of the prostatic function during this period. By combining detailed histological analyses, morphometric measurements and biochemical assays, we have shown a close association between the pre- and postnatal phases of ontogenesis and prostate development in dromedaries. This new knowledge contributes to a better understanding of the physiological processes underlying sexual maturation in this animal and opens up interesting perspectives for future reproductive research. Our results also highlight the importance of regular monitoring of PSA in dromedaries from 3-4 years old to better assess their prostate health.
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    Mechanics of rocks
    (2025-05-12) Djouimaa Sarah
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    Révélation du potentiel antioxydant et criblage biologique de quelques plantes médicinales à intérêts thérapeutiques
    (2026-01-06) SMAALI Mohamed El Amine
    The application of biomolecules extracted from plants in food and pharmaceutical industry is of great interest. In the light of that fact, our interest has been aroused to study the efficiency of chlorophormic and ethyl acetat solvents for the extraction of the main molecules from Astragalus membranaceus aerial parts (AMA) in order to evaluate the antioxidant, inhibition of α-amylase and Angiotensin-Converting Enzyme (ACE), antibacterial, cytotoxic activies and in vitro DNA-protective capacity of these extracts. Furthermore, we investigated the ability to purify new lectins from the root part to evaluate their biological activities. Gas chromatography-mass spectrometry (GC-MS) analysis showed the presence of methyl petroselinate acid as the main compound (45, 87%) in the ethyl acetate extract (EA-AMA) and the main compound in the chloroform extract (C-AMA) was linolenic acid (16.95%). The ethyl acetate extract exhibited strong antioxidant activity with interesting IC50 values not exceeding 40 μg/mL in almost all activities. The highest in vitro activity against α-amylase and ACE activity was obtained from chloroform extract with an IC50 of 20.36 and 20.77 µg/ml, respectively. The resazurin microtiter assay was carried out to analyze the extract potential against multi drug resistant strains of clinical bacteria origin of which the extracts had powerful antibacterial activity with minimum inhibitory concentration against Pseudomonas aeruginosa (0.039 ± 0 mg/ml) and Escherichia coli (0.039 ± 0 mg/ml). The extracts had a strong protective effect of Fenton-induced DNA damage. The XTT test revealed that the extracts had weaker cytotoxicity profile against EMT6 cell line. We believe that we have probably purified new lectins with molecular weights around 25 kDa. These findings suggest that this plant has a wide range of potential applications as a food supplement, a preventative and medicinal agent.