http://depot.umc.edu.dz/handle/123456789/1 2026-11-13T20:48:20Z 2026-11-13T20:48:20Z Demane Debbih, Ramila Maouchi, Amel http://depot.umc.edu.dz/handle/123456789/14868 2026-11-12T12:40:12Z 2025-06-25T00:00:00Z

Lecture psychanalytique et psychocritique de l’œuvre romanesque de Malika Mokeddem. Demane Debbih, Ramila; Maouchi, Amel If all literary creation emerges from a complex fusion between the depths of the creative psyche and the conscious work of giving form, Malika Mokeddem’s work offers a privileged field of study for this dynamic. Through a dual psychoanalytic and psychocritical reading applied to a corpus of ten novels, this research explores the unconscious mechanisms that structure the creative process. The analysis reveals how deep psychic forces shape the writing through a complex network of obsessive motifs, a singular spatial symbolism, and the crystallization of a coherent personal myth. Our study illuminates the complex articulation between trauma and creation, particularly through the examination of resilience processes. There emerges a singular literary transmutation which, through the grace of unconscious symbolization work, succeeds in metamorphosing an intimate experience into a creation with universal reach. Si toute création littéraire naît d'une fusion complexe entre les profondeurs du psychisme créateur et le travail conscient de mise en forme, l'œuvre de Malika Mokeddem offre un terrain d'étude privilégié de cette dynamique. À travers une double lecture psychanalytique et psychocritique appliquée à un corpus de dix romans, ce travail recherche explore les mécanismes inconscients qui structurent le processus créateur. L'analyse révèle comment les forces psychiques profondes modèlent l'écriture, à travers un réseau complexe de motifs obsédants, une symbolique spatiale singulière et la cristallisation d'un mythe personnel cohérent. Notre étude met en lumière l'articulation complexe entre trauma et création, notamment à travers l'examen des processus de résilience. S'y dessine une transmutation littéraire singulière qui, par la grâce du travail inconscient de symbolisation, parvient à métamorphoser une expérience intime en une création à portée universelle.

2025-06-25T00:00:00Z Brik, Fatima Bouchemat -Boumaza, Touraya http://depot.umc.edu.dz/handle/123456789/14867 2026-11-12T12:02:58Z 2010-10-14T00:00:00Z

Etude de commutateurs optiques à base de guide d’ondes en matériaux III-V. Brik, Fatima; Bouchemat -Boumaza, Touraya Plusieurs études ont été menées sur des commutateurs tout optiques à base de semiconducteurs III-V, ayant pour structure de base un Fabry- Pérot ou un guide d’onde. Lors de la caractérisation de ces dispositifs, des effets non linéaires ont été observés. Toutefois, le développement rapide des effets thermiques limite souvent les performances du composant et notamment sa vitesse de commutation Cependant, il est possible de limiter ces effets et de les stabiliser. A cet effet, nous avons entrepris la modélisation du fonctionnement d’un dispositif en guide d’onde avec coupleur à réseau, constitué d’un film actif en matériau III-V épitaxié sur un miroir de Bragg. En régimes statique et dynamique, la simulation des effets thermiques, a permis la détermination d’une structure équivalente quant à l’amplitude et à la dynamique des effets thermiques, et qui de plus réduit considérablement le temps de calcul. Les résultats de simulation confirment que l’amplitude des effets thermiques dépend fortement des propriétés optiques du miroir de Bragg via la conductivité thermique des différentes couches le constituant, et que la présence du substrat empêche l’évacuation de la chaleur produite lors de l’éclairement du dispositif. Comme le fonctionnement d’un commutateur rapide est basé sur le renforcement des non linéarités optiques d’origine électronique par rapport à celles d’origine thermique, nous avons exploré deux voies pour minimiser les effets thermiques : la diminution des dimensions de la source d’éclairement, facile à réaliser et qui permet d’augmenter notablement la durée de stabilité du commutateur, et le remplacement du réflecteur de Bragg par un miroir métallique : cette deuxième solution, est beaucoup plus efficace à mettre en œuvre technologiquement et permet d’envisager des solutions intermédiaires.

2010-10-14T00:00:00Z Boukabache, Meriem Chibani, Salih http://depot.umc.edu.dz/handle/123456789/14866 2026-10-20T14:25:50Z 2025-01-09T00:00:00Z

Phytochemical study and biological activities of two species from the families verbenaceae and lauraceae. Boukabache, Meriem; Chibani, Salih Synthetic chemicals can have harmful effects on both humans and plants, leading to health issues like toxicity and pollution that disrupt ecosystems and damage plant growth; meanwhile essential oils offer safer, and natural alternatives. In this context, the objective of this research was to study the chemical composition, as well as the antioxidant, anti-enzymatic, and insecticidal activities, of essential oils from two medicinal plants, Laurus nobilis and Aloysia citrodora, along with their major compounds: 1,8-cineole, methyleugenol, citral, and limonene. The analysis of the chemical composition of the essential oils was carried out by gas chromatography-mass spectrometry (GC-MS). Six different in vitro tests, DPPH scavenging, ABTS cation radical, reducing power, β-carotene/linoleic acid bleaching, cupric reducing antioxidant capacity, and phenanthroline assay were performed to evaluate the antioxidant properties of Laurus nobilis, Aloysia citrodora essential oils, and their major compounds; furthermore, the antienzymatic activity was carried out against six enzymes: acetylcholinesterase, butyrylcholinesterase, tyrosinase, urease, α-glucosidase, and α-amylase. The insecticidal potential of essential oils, and their major compounds was assessed against three Aphid’s species: Aphis fabae, Rhopalosiphum maidis, and Myzus persicae. We employed three different methods: contact toxicity, fumigant toxicity, and field efficacy testing. The results of the chemical composition analysis showed that Laurus nobilis essential oil is primarily composed of 1,8-cineole (26.43%), methyleugenol (13.55%), α-Terpinyl Acetate (11.77%), and linalool (10.19 %). In contrast, the main constituents of Aloysia citrodora essential oil were found to be citral (13.80%), limonene (12.16%), Neral (10.67%), Bicyclogermacrene (10.03%), Isospathulenol (6.06%), caryophyllene oxide (6.82%) and p-cymene (4.5%). the results of antioxidant activity, demonstrated that L. nobilis essential oil, along with 1,8-cineole and methyleugenol, exhibited strong antioxidant properties across all test methods. In contrast, A. citrodora essential oil and its major compounds, citral and limonene, showed no antioxidant activity. The assessment of enzymatic inhibition revealed that the examined volatile plant extracts, and their primary constituents exhibited selective efficacy, demonstrating potent inhibitory effects on certain enzymes while remaining inert against others. The insecticidal activity data indicates that both essential oils, along with the major compounds, showed strong contact and fumigant toxicities, against A. fabae, R. maidis, and M. persicae. Field experiments showed that Laurus nobilis essential oil had significant control effects, at a concentration of 0.4 L/m² achieving 86.81%, 80.67%, and 78.23% mortality for A. fabae, R. maidis, and M. persicae, respectively. Similarly, Aloysia citrodora essential oil shows mortality of 90.33% in adults of M. persicae, followed by 86.67% in A. fabae, and 84.00 % in R. maidis. However, the toxicity varied based on insect species, concentration, and exposure duration. Both oils proved more potent than their individual compounds in all the biological activities tested. The results showed that these essential oils and their major compounds could serve as alternatives to chemical synthetic preservatives and pesticides.

2025-01-09T00:00:00Z Maou, Zakarya Bougherara, Ahmed http://depot.umc.edu.dz/handle/123456789/14865 2026-10-20T14:15:15Z 2024-11-18T00:00:00Z

Les Ziban : durabilité des effets des aménagements hydrauliques et atténuation des risques d’inondation et de sècheresse. Maou, Zakarya; Bougherara, Ahmed The Ziban, located in the extreme North-east of the Sahara in an arid climate (rainfall below 150 mm/year), benefit from the waters of the Septentrional Sahara Aquifer System (SASS) and surface run-off from the southern flank of the Saharan Atlas (Oued Labiod, Abdi, El-Hai, Larab and Oued Djedi). This situation provides them with significant and diversified water resources (groundwater and surface water), which have given rise to a number of Oases that have shown unrivalled agricultural dynamism in recent decades. Today, however, surface water only accounts for 7 % (82 Hm3 /year) of mobilized water resources. Nevertheless, their inflow has ensured the recharging of aquifers, particularly groundwater tables, which has supplied and continues to supply the city of Biskra with drinking water. Groundwater resources account for 98 % (1124, 24 Hm3/year) of mobilized water resources. Today, the rate of abstraction imposed by the expansion of developed areas (1040 ha/year) has led to a significant reduction in water levels and a deterioration in the quality of the resource. In this context, the impact of man’s action can aggravate the imbalance or mitigate the contradictions and promote the resilience of a rapidly developing region. In addition, the Foum El Gherza dam, 80 % silted up, no longer ensures flood control, hence the reappearance, after decades, of the risk of flooding in its downstream section (towns and agriculture). However, the impoundment of the fountain of the Gazelles and Bouzina dams (2000 and 2021) has dried up the Oueds El-Hai and Abdi, which were responsible for recharging the groundwater downstream. However, the planned underground dam (Ouled Djellal) remains the most suitable for hydro-morphological conditions and is perfectly suited to the harsh conditions of arid zones. To support the current pace of development, it has become inevitable to connect the Ziban to other regional sources. To this end, two water transfer projects have been adopted, a supply from the Albien at Touggourt and a drinking water supply from the Beni Haroun transfer system (Koudiet Medaouar dam). This strategy can only guarantee the resilience of the Ziban region.

2024-11-18T00:00:00Z