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Steam Methane Reforming(SMR)Combined with Ship Based Carbon Capture(SBCC)for an Efficient Blue Hydrogen Production on Board Liquefied Natural Gas(LNG)Carriers

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Fluid Dynamics & Materials Processing 2025年第1期21卷 71-85页

作者： Ikram Belmehdi Boumedienne Beladjine Mohamed Djermouni Amina Sabeur Mohammed El Ganaoui laboratoire des Sciences et Ingénierie Maritimes Facultéde Génie MécaniqueUniversitédes Sciences et de la Technologie d’Oran Mohammed BoudiafOran31000Algérie laboratoire LERMAB IUT Henri Poincaréde Longwy Universitéde LorraineCosnes et RomainLongwy54400France

The objective of this study is to propose an optimal plant design for blue hydrogen production aboard a liquefiednatural gas(LNG)*** investigation focuses on integrating two distinct processes—steam methanereforming(SMR)and ship-based carbon capture(SBCC).The first refers to the common practice used to obtainhydrogen from methane(often derived from natural gas),where steam reacts with methane to produce hydrogenand carbon dioxide(CO_(2)).The second refers to capturing the CO_(2) generated during the SMR process on *** capturing and storing the carbon emissions,the process significantly reduces its environmental impact,making the hydrogen production“blue,”as opposed to“grey”(which involves CO_(2) emissions without capture).For the SMR process,the analysis reveals that increasing the reformer temperature enhances both the processperformance and CO_(2) ***,a higher steam-to-carbon(s/c)ratio reduces hydrogen yield,therebydecreasing thermal *** study also shows that preheating the air and boil-off gas(BOG)before theyenter the combustion chamber boosts overall efficiency and curtails CO_(2) *** the SBCC process,puremonoethanolamine(MEA)is employed to capture the CO_(2) generated by the exhaust gases from the SMR *** results indicate that with a 90%CO_(2) capture rate,the associated heat consumption amounts to 4.6 MJ perkilogram of CO_(2) *** combined approach offers a viable pathway to produce blue hydrogen on LNGcarriers while significantly reducing the carbon footprint.

关键词： Carbon dioxide(CO_(2))emissions blue hydrogen boil-off gas(BOG) steam methane reforming(SMR) ship-based carbon capture(SBCC)

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The Potential of Wacapou (Vouacapoua americana) Extracts to develop New Biobased Protective Solutions for Low-Durability Wood Species

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Journal of Renewable Materials 2025年第1期13卷 79-100页

作者： Emma Kieny Kévin Candelier Louis Milhe Yannick Estevez Cyrielle Sophie Romain Lehnebach Jérémie Damay Daniela Florez Emeline Houël Marie-France Thévenon Julie Bossu CIRAD Ecologie de Forêts de Guyane(EcoFoG)AgroparisTechCNRSINRAEUniversitéde GuyaneKourou97379France CIRAD UPR BioWooEBMontpellierF-34398France BioWooEB Universitéde MontpellierCIRADMontpellierF-34398France CNRS Ecologie de Forêts de Guyane(EcoFoG)AgroparisTechCIRADINRAEUniversitéde GuyaneKourouGuyane Française97379France Sorbonne Université CNRSLaboratoire de Biodiversitéet Biotechnologies MicrobiennesLBBMObservatoire OcéanologiqueBanyuls-sur-Mer66650France

The valorization of Amazonian wood residues into active chemical compounds could be an eco-friendly,cost-effective and valuable way to develop wood preservative formulations to enhance the decay and termite resistance of low-durable wood ***(Vouacapoua americana.,Fabaceae)is a well-known Guianese wood spe-cies commonly used in local wood construction due to its outstanding natural durability,which results from the presence of a large panel of extractives *** addition,its industrial processing generates large amounts of *** residues were extracted by maceration using four different solvents(water/ethanol,ethyl acetate,hexane and dichloromethane/methanol),separately and *** yield of each extractive fraction was determined,and their chemical compositions were analyzed by Liquid Chromatography-Mass Spectrometry(LC-MS).ethyl acetate led to the highest extraction yield,and the active compounds were identiﬁed in the obtained extractive *** this sense,the fungicidal and termite-repellent properties of these extractives were then tested using a screening laboratory(with temperate and tropical microorganisms),according to the solution concentration(1%,2.5%,5%,8%and 10%).Finally,Virola michelii Heckel wood samples(low durable species)were impregnated with the 8%concentration *** impregnated wood samples were then exposed to a soil bed *** results highlighted that the nature of the solvent used during wood maceration affects the con-tent of the obtained extractive ***-Performance Liquid Chromatography–High-Resolution Mass Spectrometry(UHPLC-HRMS)analyses showed the inﬂuence of extraction parameters on the nature of the extracted *** extracts(from ethyl acetate maceration)showed good anti-fungal and anti-termite ***,the concentration in extractives had an impact on the anti-termite activity level for Reti-culitermesﬂavipes and Cryptotermes *** based on W

关键词： Anti-fungal and anti-termite activities conferred durability extractives French Guiana impregnation guianese species wood by-products

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Guiera senegalensis Alleviates Ischemia Renal Reperfusion Injury in Albinos Wistar Rats

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Open Journal of Pathology 2025年第1期15卷 16-27页

作者： Mama Sy Fatoumata Bah Mouhamed Chérif Dial Robert Foko Racha Kamenda Ibondou Cheikh Diop Abdoulaye Séga Diallo laboratoire dHistologie-Embryologie-Cytogntique Facult de Mdecine Pharmacie et dOdontologie de lUCAD Dakar Senegal laboratoire Toxicologie et Hydrologie Facult de Mdecine Pharmacie et dOdontologie de lUCAD Dakar Senegal laboratoire Anatomie-Pathologique Facult de Mdecine Pharmacie et dOdontologie de lUCAD Dakar Senegal

Introduction: Renal ischemia-reperfusion (IR) is responsible for injuries such as destruction or dysfunction of tubular epithelial cells with inflammatory reaction and oxidative stress. Several therapeutic methods have been tested to alleviate ischemia-perfusion injury, ranging from using anti-inflammatory drugs, antioxidants, and plants from traditional pharmacopeia to administering RNA interference. However, there is currently no effective therapeutic option available for the treatment of renal IR injury, other than supportive therapies such as renal replacement therapy or hydration. Objective: This present study aimed to evaluate the effect of Guiera senegalensis on renal ischemia reperfusion, a recognized plant for its antioxidant and anti-inflammatory properties. Materials and Methods: Twenty-four (24) adult male Wistar rats were divided into four following groups: SLAM (subjected to a median laparotomy with simulated ischemia);GUIERRA (animals that received 250 mg/kg of guierra senegalensis orally, once a day, for 5 days, with simulated renal ischemia);IR (animals that underwent laparotomy followed by clamping of bilateral renal pedicles for 45 min and followed by reperfusion);GUIERRA + IR (animals given GUIERRA at the dosage of 250 mg/kg per day, for 5 days and then subjected to renal ischemia-reperfusion). Data analysis was performed by ANOVA, and a significance level of p Results: Compared with the I/R group, rats in the GUIERRA + IR group showed reduced histopathological damage scores (p Conclusion: The results of this preliminary work suggest that Guiera senegalensis decreases the degree of tissue damage in renal ischemia-reperfusion cases. This plant seems to be a promising therapeutic;further studies could help to precise the targets of its compounds on ischemia-reperfusion pathways.

关键词： Ischemia Reperfusion Acute Kidney Injury Guiera senegalensis Tubular degenerescence

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Assessment of Health Risks Associated with Nitrate in Drinking Well Water: Case Study, M’Bahiakro (Central-Eastern Côte d’Ivoire)

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Journal of Water Resource and Protection 2025年第1期17卷 35-46页

作者： Hervé Achié N’cho Ruth Baï Euclide Kouadio N’Goran Kouadio Koffı Lazare Kouakou Kouassı Innocent Kouassi Kouamé laboratoire de Gosciences et Environnement UFR Sciences et Gestion de lEnvironnement Universit Nangui Abrogoua Abidjan Cte dIvoire laboratoire de Sciences du Sol de lEau et des Gomatriaux UFR Sciences de la Terre et des Ressources Minires Universit Flix Houphouet Boigny Abidjan Cte dIvoire laboratoire de Gnie de lEau et de lEnvironnement UFR Environnement Universit Jean Lorougnon Gud de Daloa Daloa Cte dIvoire

Nitrate contamination of groundwater is a worldwide problem, particularly in agricultural countries. Exposure to high levels of nitrates in groundwater can have adverse effects on the health of residents who use groundwater for drinking. This study aims to assess the health risk associated with the ingestion of nitrates in well water in the town of M’bahiakro. Health risk maps were created on the basis of hazard quotients (HQ) using the US Environmental Protection Agency (USEPA) health risk assessment model. The results indicate that residents of the Koko, Dougouba and Baoulekro neighbourhoods, whatever their age, are potentially exposed to the toxic effects of NO3−during their daily intake of nitrate-contaminated well water, with reference to hazard quotients (HQ) greater than 1. Nitrate concentrations in the groundwater should therefore be controlled in order to prevent their harmful effects on the health of the population and guarantee its use in rice-growing activities in M’Bahiakro.

关键词： Nitrate Well Health Risks M’Bahiakro

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Environmental Impacts of Uncontrolled Waste Collection Points in the Urban Municipality of Coyah, Guinea, West Africa

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Journal of Geoscience and Environment Protection 2025年第1期13卷 302-315页

作者： Marie Rose Bangoura Alain Gbilimou Lucien Solie laboratoire detude et de Recherche Urbaine (LERU) Institut Suprieur architecture et dUrbanisme Conakry Rpublique de Guine laboratoire de Recherche Applique en Gosciences et Environnement (LRA) Institut Suprieur des Mines et Gologie de Bok (ISMGB) Bok Rpublique de Guine Centre detude et de Recherche en Environnement (CERE) de lUGANC Conakry Rpublique de Guine

This article is descriptive research that takes into account the growing concerns of the authorities of the municipality of Coyah regarding waste management, as well as our desire to contribute to improving the living conditions of the inhabitants of this region. The main objective is to assess the environmental impacts of uncontrolled waste collection points on the receiving environments, by characterizing and evaluating them. This will make it possible to propose appropriate measures for rational and sustainable management of the environment in Coyah. The study addresses the characterization and assessment of pollution of receiving environments, including water, soil and air. Environmental analyses were carried out according to standard methods of EPA (1997), adapted to the equipment of the companies Hach, Millipore and Verlan. During the environmental impact assessment, we identified the sources of pollution and assessed the potential impacts. This research highlighted the pollution of receiving environments by waste located in the vicinity of collection points, while considering solutions for efficient and sustainable waste management.

关键词： Environmental Impacts Waste Sustainable Management Receiving Environment Collection Points

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Mixed Integer Program for e-Wallet Security Based on Suspicious Transaction detection

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Engineering(科研) 2025年第1期17卷 155-167页

作者： Pacôme Brou Kadokan Coulibaly Siaho Diomande laboratoire des Sciences Technologiques de lInformation et de la Communication Ecole Suprieure Africaine des Technologies de lInformation et de la Communication (ESATIC) Abidjan Cte dIvoire

With the rise of digital transactions, e-Wallets have become prime targets for fraudulent activity. Early detection of suspicious transactions is therefore crucial to protect users and maintain trust in these systems. This article proposes a mathematical model based on a Mixed Integer Program (MIP) to identify and block suspicious transactions. This mathematical approach is designed to analyze e-Wallet transactions in real time by combining integer and continuous decision variables, offering greater flexibility in modeling fraud detection constraints. It considers parameters such as transaction cost, geographical location, type of device used for the transaction, IP address and other potential fraud indicators. Assigning suspicion scores to each transaction enables the model to identify risks that become habitual behavior and mark them as suspicious. Tests carried out on 10,000 digital transactions show that using PMNE significantly improves the detection of fraudulent transactions by identifying the most critical anomalies in terms of accuracy, adaptability and operational efficiency. The model also offers greater accuracy, reducing the number of false positives and false negatives, enabling faster intervention to block truly suspicious transactions.

关键词： e-Wallet PMNE Digital Transaction Suspicion Score Suspicious Transaction

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design and Optimization of Terracotta Tube-Based Direct Evaporative Cooling Exchanger: An Analytical Approach to Heat and Mass Transfer

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Open Journal of Applied Sciences 2025年第1期15卷 352-373页

作者： Windnigda Zoungrana Makinta Boukar Ousmane Coulibaly Guy Christian Tubreoumya Antoine Bere laboratoire denergtique dElectronique dElectrotechnique dAutomatique et dinformatique Industrielle Universit Abdou Moumouni Niamey Niger laboratoire de Physique et de Chimie de lEnvironnement Universit Joseph Ki Zerbo Ouagadougou Burkina Faso

This study develops an analytical model to evaluate the cooling performance of a porous terracotta tubular direct evaporative heat and mass exchanger. By combining energy and mass balance equations with heat and mass transfer coefficients and air psychrometric correlations, the model provides insights into the impact of design and operational parameters on the exchanger cooling performance. Validated against an established numerical model, it accurately simulates cooling behavior with a Root Mean Square deviation of 0.43 - 1.18˚C under varying inlet air conditions. The results show that tube geometry, including equivalent diameter, flatness ratio, and length significantly influences cooling outcomes. Smaller diameters enhance wet-bulb effectiveness but reduce cooling capacity, while increased flatness and length improve both. For example, extending the flatness ratio of a 15 mm diameter, 0.6 m long tube from 1 (circular) to 4 raises the exchange surface area from 0.028 to 0.037 m2, increasing wet-bulb effectiveness from 60% to 71%. Recommended diameters range from 5 mm for tubes under 0.5 m to 1 cm for tubes 0.5 to 1 m in length. Optimal air velocities depend on tube length: 1 m/s for tubes under 0.8 m, 1.5 m/s for lengths of 0.8 to 1.2 m, and up to 2 m/s for longer tubes. This model offers a practical alternative to complex numerical and CFD methods, with potential applications in cooling tower optimization for thermal and nuclear power plants and geothermal heat exchangers.

关键词： Analytical Modeling Porous Terracotta Tube Direct Evaporative Cooling Heat and Mass Exchanger Performance Optimization

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Influence of Magnetic Field and Temperature on the Transient density and Voltage in a Radial Junction Solar Cell in Dynamic Regime under Pulsed Multispectral Illumination

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Open Journal of Applied Sciences 2025年第1期15卷 42-52页

作者： Moussa Ouedraogo Nazé Yacouba Traore Alain Diasso Raguilignaba Sam François Zougmore laboratoire de Matriaux dHliophysique et Environnement (LaMHE) Dpartement de Physique UFR/ST Universit Nazi Boni Bobo Dioulasso Burkina Faso laboratoire de Matriaux et Environnement Dpartement de Physique UFR/SEA Universit Joseph Ki-Zerbo Ouagadougou Burkina Faso

This study examines the influence of magnetic field and temperature on the transient voltage of a polycrystalline silicon radial junction solar cell in a dynamic regime under multispectral illumination. Radial junction solar cells represent a major advancement in photovoltaic technologies, as they optimize light absorption and charge collection efficiency. The focus is on the impact of the magnetic field and temperature on the decay of transient voltage, which provides crucial information on recombination processes and the lifetime of minority carriers. The results reveal that the magnetic field tends to increase the transient voltage by directly affecting the transient electron density. Indeed, for B > 7 × 10−5 T, the magnetic field prolongs the relaxation time by increasing the transient voltage amplitude. Additionally, rising temperatures accelerate (ranging from 290 K to 450 K) recombination processes, thereby reducing the transient voltage, although this effect is moderated by the presence of a magnetic field. The study highlights the complex interaction between magnetic field and temperature, with significant impacts on the transient behaviour.

关键词： Electrons Radial Junction Transient Voltage Magnetic Field Operating Temperature

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Comparative Study of a Lithological description by Geoelectrical and Hydrogeological Drilling in a Basement Environment: Site of the Jean Lorougnon Guédé University in Daloa (Centre-West of the Ivory Coast)

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Open Journal of Modern Hydrology 2025年第1期15卷 18-31页

作者： Assoue Kouakou Sylvestre Kouadio Assa Maxime Abbe Gountoh Aristide Douagui Oscar Zahibo Onetie Kouassi Constantin Gautier Kanga UFR Sciences Biologiques Dpartement de Gosciences de lUniversit Plforo Gon Coulibaly de Korhogo Korhogo Cte dIvoire UFR des Sciences et Gestion de lEnvironnement Laboratoire Gosciences et Environnement de lUniversit Nangui Abrogoua Abidjan Cte dIvoire Unit de Formation et de Recherches Environnement Universit Lorougnon Gud Daloa Cte dIvoire

The comparative study of electrical and hydrogeological soundings is being carried out on the site of the Jean Lorougnon Guédé University in Daloa, in central-western Côte d’Ivoire. The aim of this study is to determine the similarities in the weathering profile obtained by the hydrogeological surveys and the electrical surveys. The methodology is based on a comparative study of the characteristics of the weathering profile (number of layers, thickness of weathering and number of water inlets). The results show that the electrical sounding curves are of the KH type, giving 4 geological layers. The first layer corresponds to topsoil with a thickness of less than 1 m. The second corresponds to a thicker lateritic clay formation (20 m on average). The third layer is granitic arena, locally up to 30 m thick. Below this is the fractured granitic basement. The results also show that most of the results from the electrical boreholes are consistent with those from the boreholes. Differences exist and are essentially due to the shape of certain electrical sounding curves and to the driller’s assessment of the interfaces between the geological formations.

关键词： Electrical Soundings Hydrogeological Soundings Boreholes Crystalline Basement Alteration Profile Daloa

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A Regional Structural Mapping Approach for Mineral Exploration: Application in the Southwestern Region of Burkina Faso

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Open Journal of Geology 2025年第1期15卷 1-21页

作者： Kalidou Traoré Benjamin Sawadogo Koffi Vincent de Paul Vodounnou Wilédio Marc-Emile Bonzi Georges Alassane Ouattara Morou François Ouédraogo Séta Naba laboratoire de Godynamique et de Cartographie Universit des Sciences des Techniques et des Technologies de Bamako Bamako Mali laboratoire Gosciences et Environnement (LaGE) Dpartement des Sciences de la Terre Universit Joseph Ki-Zerbo Ouagadougou Burkina Faso Institut Teng Tuuma Gosciences de Ouagadougou (ITTGO) Ouagadougou Burkina Faso Universit Daniel Ouezzin Coulibaly Unit de Formation et de Recherche en Sciences Appliques et Technologies (UFR-SAT) Ddougou Burkina Faso

From a harmonized structural map at the scale of a portion of SW Burkina Faso (90 × 80 km2), we targeted prospective zones on the basis of structural criteria and structure-geology relationships. The map was constructed from an aeromagnetic image, and the geology was deduced from old geological maps. The procedure involved extracting the magnetic fabric and deducing the deformation gradients, which led to the identification of shear zones. Analysis and interpretation of the structural geometry of the obtained structural pattern led us to target areas of interference between structures or geology-structures interplays, which are conducive to the deposition of metallic elements. The subsequent overlay of known gold prospects and deposits documented in the region revealed the validity of the predefined prospects. This result reinforces the applicability of the methodology as a first-order regional approach to mineral exploration.

关键词： Magnetic Fabric Shear Zones Targeting Gold Mining Exploration sWAC Burkina Faso

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