Revues Scientifiques Marocaines
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Evaluation of 6-Bromo-2-Imino-2H-Chromene-3-Carboxamide as an Efficient Inhibitor for Corrosion of Mild Steel in HCl Solution: Experimental and Theoretical Approaches: A Combined Study of Electrochemical Performance and Molecular Interaction Mechanisms
No full textThis study investigated the application of 6-bromo-2-imino-2H-chromene-3-carboxamide (BIHCC) as a corrosion inhibitor of mild steel in a 1 M HCl solution. The inhibition efficiency and adsorption behavior of the compound were studied by means of potentiodynamic polarization, weight loss measurements and density functional theory (DFT) calculations. In experimental conditions, it demonstrates that the best concentration at which BIHCC could achieve a high level of inhibition efficiency of 81.3% was at an optimum level of 0.5 mM. This is due to the formation of protecting film on mild steel surface, thus reducing the corrosion rate. The inhibition efficiency and corrosion resistance increased with increasing BIHCC concentration, indicating that it is very effective at higher concentrations. Temperature effects were also assessed in measure using the weight loss method and found that immediately there was a minor increase of the inhibition efficiency with the increment in temperature meaning that thermal stability was achieved for the adsorbed BIHCC layer. BIHCC adsorption on mild steel gave satisfaction on the Langmuir model of adsorption isotherm. DFT calculations of electronic indices, namely ΔEgap and EHOMO, further established the strong adsorption potential of the inhibitor and its better performance compared to experimental derived values of adsorption free energy (ΔGads). The agreement of experimental results to the theoretical ones confirms the suitability of BIHCC as an effective corrosion inhibitor and a stable alternative for mild steel in acidic environments
Harnessing Biomass Waste for Value-Added Products in Achieving Sustainable Development Goals (SDGs): A Systematic Review of Low-Carbon Transition, Bibliometric, Technical Insights, and Challenges
No full textThis study aims to systematically examine the utilization of biomass waste into value-added products in supporting the achievement of the Sustainable Development Goals (SDGs), especially in the context of the transition to a low-carbon society and circular economy. The Systematic Literature Review (SLR) method was used. Biomass can be converted into various products such as bioenergy, bioplastics, briquettes, biochar, biofertilizers, and automotive composites. Conversion technologies such as pyrolysis, fermentation, and biorefinery support the principles of circularity and emission mitigation. This study also reveals challenges in technical, social, and policy aspects. The implication is that cross-sector synergy is needed to encourage the utilization of biomass as a strategic solution for sustainable development and to strengthen the green industry in the future
Development of a Carbon Paste Electrode Modified with Urea-Based Polymer for Sensitive Detection of Paracetamol
No full textIn this study, a carbon paste electrode modified with a urea-based polymer was developed for the detection of paracetamol. The electrode design and detection parameters were systematically optimized, including pH, accumulation potential, accumulation time, scan rate, and buffer solution. Employing differential pulse voltammetry, a calibration curve was established over a wide concentration range (10⁻⁴ to 10⁻¹⁰ M) .The sensor demonstrated remarkable repeatability, reproducibility, and reliability. Additionally, real-world applicability was confirmed by successfully detecting paracetamol in wastewater samples yielded recovery rates of 95-97.5%, confirming its suitability for real-world scenarios. These findings highlight the potential of the proposed electrode for sensitive and reliable pharmaceutical analysis in complex matrices
ANALYSE DES DETERMINANTS DE L’ABANDON SCOLAIRE EN REPUBLIQUE DU CONGO
No full textThe aim of this research is to analyze the determinants of school dropout in the Republic of Congo . To this end, we implemented a logit model using data from the Congolese household survey (ECOM2). The results show that the variables selected have a profound impact on school drop-out. The dropout rate is 99.66%, with 48.35% for boys and 51.65% for girls. Similarly, the study reveals that as the number of active members increases, so does the probability of dropping out of school. Also, long distance travelled, age and place of residence increase the dropout rate.L’objectif de cette recherche consiste à analyser les déterminants de l'abandon scolaire en République du Congo . Pour ce faire, nous avons implémenté un modèle logit tout en utilisant les données de l'enquête congolaise auprès des ménages (ECOM2) . Les résultats obtenus montrent que les variables retenues impactent profondément l’abandon scolaire. Il ressort également que l’abandon scolaire est de 99,66% aussi on aperçoit (48,35%) chez les garçons et (51,65%) chez les filles. De même, l’étude révèle que plus le nombre des membres actifs augmente, plus la probabilité d’abandonner l’école s’amplifie. Aussi, une longue distance parcourue, âge et le milieu de résidence augmente le taux d’abandon
ENTREPRENEURIAT FEMININ AU MAROC : UNE MODELISATION INDUCTIVE DES PARCOURS ET DES DYNAMIQUES CONTEXTUELLES
No full textThis article explores the female entrepreneurial process in the Moroccan context using a grounded qualitative approach based on Grounded Theory. Based on 18 interviews, this study develops a contextual model of female entrepreneurial pathways. It identifies three types of trajectories, four process phases, and a set of internal and external explanatory factors. The findings highlight the crucial role of collective dynamics, sociocultural constraints, territorial factors, and women's adaptive strategies. The article calls for a situated understanding of female entrepreneurship, beyond standardized models, and offers recommendations for more locally adapted public policies and support mechanisms.Cet article explore le processus entrepreneurial féminin dans le contexte marocain, à travers une approche qualitative enracinée fondée sur la Grounded Theory. L’étude repose sur 18 entretiens menés auprès de femmes entrepreneures. Elle permet de reconstruire un modèle contextuel de leur parcours, structuré autour de trois trajectoires types, quatre phases successives, et plusieurs facteurs explicatifs internes et externes. Les résultats mettent en évidence l’importance des dynamiques collectives, des contraintes socioculturelles, du territoire et des stratégies d’adaptation développées par les femmes. L’article invite à reconsidérer l’entrepreneuriat féminin dans son contexte spécifique, au-delà des modèles standards. Il propose des recommandations adaptées aux réalités locales pour orienter les politiques publiques et les dispositifs d’accompagnement
Chemical Profiling, In Silico Modeling, and Antifungal Effects of Lavandula stoechas Essential Oil Against Verticillium dahliae in Olive Cultivation: Chemical Profiling, In Silico Modeling, and Antifungal Effects of Lavandula stoechas Essential Oil
No full textThe shift toward sustainable approaches in disease management has led to increased attention on natural substitutes for synthetic fungicides. This study investigated the antifungal potential of essential oil (EO) from a wild Moroccan population of Lavandula stoechas against Verticillium dahliae, the causal agent of Verticillium wilt in olive trees. The EO yield (1.75%) ranked among the highest reported for this species in the Mediterranean region. GC-MS analysis revealed a distinct chemotype dominated by thujone (15.15%), camphor (14.09%), viridiflorene (14.03%), verticiol (12.11%), and 1,8-cineole (11.28%). In vitro bioassays showed a clear dose-dependent inhibition of fungal growth, with complete suppression at 604 ppm. Complementary molecular docking studies identified viridiflorene as the compound with the highest affinity for key fungal virulence proteins including pectinase VdPelB and the effector PevD1, suggesting a primary role in disrupting pathogenicity. These results expand the chemotaxonomic knowledge of L. stoechas and support new avenues for exploring its adaptive traits. Moreover, this work highlights the antifungal potential of this unique Moroccan chemotype and contributes to the valorization of underexplored native aromatic plants in Morocco for agricultural and pharmaceutical applications
Les politiques sectorielles locales et variabilité climatique sur l’activité agricole dans la commune de MAKENENE, Région du centre CAMEROUN
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Pédagogie active et place des élèves dans le processus d’enseignement-apprentissage en classe de géographie
No full textLE BUZZ MARKETING ET LA DECISION D’ACHAT : UNE ETUDE QUANTITATIVE AUPRES DES CONSOMMATEURS MAROCAINS
No full textThis article examines the impact of marketing buzz on the purchasing decision of Moroccan consumers, highlighting the most influential practices on purchasing behaviors. Through a quantitative approach, data were collected via a structured questionnaire, distributed to a sample of 200 respondents exposed to buzz marketing campaigns on social platforms. The analysis of the results reveals that the virality of the content, the direct engagement of the consumers, the influence of the brand ambassadors and the urgency of the offers have a significant impact on the purchase decision. The results confirm the hypotheses put forward, showing that visual platforms such as YouTube and Instagram are particularly effective in spreading these messages. Brands need to focus on creating engaging content and actively interacting with consumers, while building credibility through ambassadors.Cet article examine l'impact du buzz marketing sur la décision d'achat des consommateurs marocains, en mettant en lumière les pratiques les plus influentes sur les comportements d'achat. À travers une approche quantitative, des données ont été collectées via un questionnaire structuré, distribué à un échantillon de 200 répondants exposés aux campagnes de buzz marketing sur des plateformes sociales. L'analyse des résultats révèle que la viralité du contenu, l'engagement direct des consommateurs, l'influence des ambassadeurs de marque et l'urgence des offres ont un impact significatif sur la décision d'achat. Les résultats confirment les hypothèses posées, en montrant que les plateformes visuelles comme YouTube et Instagram sont particulièrement efficaces pour diffuser ces messages. Les marques doivent se concentrer sur la création de contenu engageant et interagir activement avec les consommateurs, tout en renforçant la crédibilité via des ambassadeurs