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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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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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exploring Malnutrition risk among Infants under Five Years in Guéra Province, Chad: A Cross-Sectional Study

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Food and Nutrition sciences 2025年第1期16卷 95-119页

作者： Nassaradine Macki Minawir Donatien Serge Mbaga Mahamat Béchir Bernard Sodio Alpha Seydou Yaro cole Doctorale des sciences et des technologies du Mali Universit des Sciences des Techniques et des Technologies de Bamako (USTTB) Bamako Mali cole Suprieure des sciences de la Sant Siantou Institut Universitaire Siantou Yaound Cameroon Facult des sciences de la Sant Humaine Universit de N'Djamna N'Djamna Chad laboratoire dentomologie-Parasitologie Facult des Sciences et Techniques (FST) Universit des Sciences des Techniques et des Technologies de Bamako (USTTB) Bamako Mali Malaria research and training Center Point G Facult de Mdecine et dOdontostomatologie (FMOS) Universit des Sciences des Techniques et des Technologies de Bamako (USTTB) Bamako Mali

Background: Malnutrition, a serious public health concern, is influenced by various factors. Objective: the study aims to explore malnutrition issues among infants under five years old in Guéra Province. Methods: the study used a cross-sectional design and a two-stage cluster sampling method to select participants. the study population was infants aged between 0 - 24 months. Data collection was done between June 2023 and September 2024;it included anthropometric measurements, blood analyses, and interviews. Anthropometric parameters were calculated using eNA for SMArt software. Statistical analyses were performed by r Studio to investigate associations between different characteristics, using logistic regression models to identify risk factors. A p-value less than 0.05 was considered significant. results: the study included 377 infants in eight villages in Guéra Province, Chad. the sample was predominantly girls (55.3%), with a median age of 16 months. Most infants (94%) were mixed-fed, and only 6% were exclusively breastfed. We found that 7.3% of children were globally malnourished, with higher rates in boys 9.6%. A significant disparity existed between boys and girls in global acute malnutrition (GAM) rates, with boys having a higher prevalence of 17.9%. A substantial proportion of Infants were underweight, with males 27.4%. Stunting was prevalent 20.1%. Several factors were associated with malnutrition, including gender, feeding practices, infectious diseases, and socioeconomic factors. Diarrhea, malaria, limited access to drinking water, and early diet diversification were significantly associated with malnutrition. Conclusion: targeted interventions are necessary to address these issues and improve the nutritional status of children in the Guéra province.

关键词： Malnutrition Undernutrition Overnutrition Stunting Wasting Infant

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Pheochromocytoma rare Cause of Uncontrolled type 2 Diabetes Mellitus: A Case report from Cameroon

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Open Journal of endocrine and Metabolic Diseases 2025年第1期15卷 1-7页

作者： Ghislaine Biwole Sida Charley Loumade elenga-Bongo Anne-Marie Grace Belobo eyebe Aboubakar Diallo raoul Bukam Martine etoa department of Internal Medicine Hpital de district de la Cit verte Yaound Cameroon Faculty of Health sciences University Marien Ngouabi Brazzaville Republic of the Congo Facult de Mdecine et des sciences pharmaceutiques Universit de Douala Douala Cameroon Facult de Mdecine et des sciences Biomdicales Universit de Garoua Garoua Cameroon Facult de Mdecine et des sciences Biomdicales Universit de Yaound 1 Yaound Cameroon

Pheochromocytoma (PHeO) is a rare endocrine tumor from the chromaffin cells in the adrenomedullary gland and sympathetic/parasympathetic ganglia, secreting one or more catecholamines. It is frequently associated with hypertension and described in the literature as a cause of secondary diabetes mellitus. In patients with known persistent uncontrolled diabetes, PHeO is rarely mentioned as the cause of uncontrolled diabetes. the authors report a rare case of PHeO diagnosed in a 64-year-old female patient treated for 10 years with type 2 diabetes mellitus and hypertension. She was treated using a combination of insulin (2 injections) and Metformin 1000 mg twice a day. the glycemic control was poor (HbA1c-11%), and persistent High Blood Pressure (HBP). She presented with unexplained weight loss associated with permanent hyperhidrosis (sweating), affecting her quality of life and diffuse abdominal pain. the investigations confirmed the diagnosis of PHeO, which resection led to improvement of glycemic control and hypertension.

关键词： Pheochromocytoma Uncontrolled Diabetes Hypertension Cameroon

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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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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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Valorization of Ubiquitous Plant Species Used as Food Packaging in Benin: A Sustainable Solution to Improve Quality of Life and Protect the environment

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American Journal of Plant sciences 2025年第1期16卷 51-63页

作者： Joli Prince Mintognissè Fossou Yann Christie Sissinto Adjovi Ulrich Hilarion Ahéhéhinnou Frida tovo Sèna emmanuelle Dédéhou laboratory of Biochemistry and Molecular Biology of Centre Bninois de la recherche Scientifique et de lInnovation Cotonou Benin National Agricultural University Ketou Benin ecole des sciences et techniques de Conservation et de transformation des Produits Agricoles Universit Nationale dAgriculture (ESTCTPA/UNA) Porto-Novo Benin

Vegetal leaves play a significant role in the daily lives of populations in developing countries. this study aimed to highlight the plant species used as food packaging in southern Benin. A survey questionnaire was administered in local markets, and informed consent was obtained from native guides. Data were processed using Google Forms, and a phytochemical screening was conducted on the sampled species. A total of 311 individuals, including elders, vendors, and consumers, participated in the survey. the most commonly used plant species identified were tectona grandis, thalia geniculata, Musa sapientum, Gmelina arborea, Manihot esculenta, and terminalia catappa. Several reasons, primarily cultural, explain the preference for these species. Notably, tectona grandis and Musa sapientum demonstrated superior morphological, physical, and organoleptic qualities, measuring 79 cm by 53.5 cm and over 2 m by 50 cm, respectively. they accounted for 33.33% and 32.35% of usage. Additionally, fermented corn paste, making up over 53% of offerings, was the most popular food item. the mechanical properties of these leaves, such as flexibility, toughness, and relative impermeability, along with identified phytochemicals like terpenes, alkaloids, gallic acid, flavonoids, and coumarins, enhance food preservation and limit microbial activity. Promoting the use of these natural packaging materials over plastic alternatives could significantly reduce environmental pollution and mitigate the risks associated with toxic microorganisms in food, contributing to both ecological health and food safety.

关键词： Socio-ethnobotanical Surveys Food Items Secondary Metabolites Bioactive Natural Substances Phytochemical Screening

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Mothers’ Knowledge and Practices regarding exclusive Breastfeeding in the Central African republic

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Open Journal of Pediatrics 2025年第1期15卷 74-92页

作者： Hilda Josephe touadera Mongboa Brice Olivier Bogning Mejiozem Jean Chrysostome Gody Fondation tina touadera Bangui Central African Republic Centre Hospitalier Universitaire Pdiatrique de Bangui Bangui Central African Republic Facult des sciences de la Sant Universit de Bangui Bangui Central African Republic

Introduction: Breastfeeding is the best way to provide ideal nutrition for optimal infant growth and development. Objectives: the aim of our work was to assess the knowledge, attitudes and practices of mothers of children aged 0 - 24 months on exclusive breastfeeding in the Central African republic. Methods: this was a cross-sectional, descriptive and analytical study conducted from September 15 to October 15, 2024 among mothers of infants aged 0 to 24 months. Sociodemographic, obstetric and breastfeeding-related data were collected through individual interviews conducted during sensitizations on good feeding practices organized by the tina touadera Foundation. the chi2 test was used to test for relationships between variables, and the p significance level was set at 0.05. results: the average age of the mothers surveyed was 27.67 years. 65.69% (n = 247) of mothers lived in urban areas and 55.85% (n = 210) were Muslim. 56.38% (n = 212) were living common-law and 34.04% (n = 128) were poor. Secondary-school mothers (44.42%, n = 167) and housewives (53.72%, n = 202) were in the majority. exclusive breastfeeding (eBF) was correctly defined by 79.26% (n = 298) of mothers and actually practised in 24.20% (n = 91) of cases. the main source of information was a health professional in 75.36% (n = 304) of cases. Among the 285 mothers who practised mixed breastfeeding, lack of time (33.33%) was the main reason. they acknowledged having given water (100%), corn porridge (75.09%) and/or artificial milk (24.91%) before the first 6 months of life. the average time for introducing water was 2.2 months, and for porridge/formula 2.79 months. More than half the mothers (55.05%) said they did not know their infants’ weaning age. Factors positively influencing the use of eBF were age under 29, residence in an urban area, primiparity, having been informed about AMe by a health professional, and being a housewife or shopkeeper (p Conclusion: Mothers’ level of knowledge was heterogeneous

关键词： eBF Knowledge Attitudes Practices Mothers CAr

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Compositional Suitability Assessment and New Classification of lateritic Soils for road Construction: Case of Materials from the thies region in Senegal

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Journal of Geoscience and environment Protection 2025年第1期13卷 71-88页

作者： Baye Oumar Diop Ignace Gbaguidi Papa Goumbo Lo Seynabou Sène Aminata Cisse Makhaly Ba Khadym Niang cole Suprieure Polytechnique Universit Cheikh Anta Diop Dakar Senegal ecole Nationale Suprieure des Mines et de la Gologie (ex-ISt) Universit Cheikh Anta Diop Dakar Senegal laboratoire National de rfrence dans le domaine du Btiments et des travaux Publics (LNr-BtP)1 Dakar Senegal Agence des travaux et de Gestion des routes (AGerOUte)2 Dakar Senegal UFr sciences de lIngnieur Universit Iba Der Thiamf de This This Sngal

lateritic soils are found over large areas in tropical countries where their suitability for road engineering is a real concern, both compositionally and mechanically. Mineralogical and geochemical characterization, and profile description were carried out on Pliocene gravel lateritic soils from the thies region to assess their suitability for road construction. these soils were sampled in lam-lam, Mont rolland, Pout, Ngoundiane and Sindia borrow pits in that region. Minerals that make up these studied materials are quartz, kaolinite, hematite and goethite, identified by X-ray Diffraction and confirmed with Infrared spectroscopy. this mineralogy is characteristic of lateritic soils which are concretionary structure and are formed in well-drained tropical regions like that of thies. According to the chemical results, these gravel lateritic soils are poor in organic matter, OM 2/(Al2O3 + Fe2O3) Diop ternary diagram for classifying lateritic soils. therefore, thies materials are ferruginous lateritic soils, Al2O3/Fe2O3 taining non-swelling clay (kaolinite) and rich in gravelly nodules, S/CeC t%. As a result, these soils are compositionally suitable for road construction. these appreciated mineralogical, geochemical and pedological properties can now help overcome compositional challenges well before determining the bearing capacity of lateritic materials. this mechanical strength, which largely depends on their composition, is decisive in defining the optimal conditions for using lateritic materials in road geotechnics.

关键词： lateritic Gravel Mineralogy Geochemistry Soil Profile thies

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On-Station Bioefficacy of Neem Seed extract and Beauveria bassiana 115 for Managing Major Insect Pests of Cowpea in the Sahelian region of Maradi, Niger

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Agricultural sciences 2025年第1期16卷 1-12页

作者： laouali Amadou Souleymane laminou Ousseina Abdoulaye Mahaman Nassirou Oumarou roufai Yarifou Nana Hadiza Issa labo ramatou Bargui Abdoulaye Ibrahim Boukari Baoua entomologie laboratory II Institut National de la Recherche Agronomique du Niger Maradi Niger Centre rgional de la recherche Agronomique de tahoua CERRA Tahoua Niger Faculty of Agronomy Universit Dan Dicko Dan Koulodo de Maradi Maradi Niger Facult des sciences Agronomiques Universit Boubacar B de Tillabry Tillabry Niger

Cowpea, Vigna unguiculata L. Walp, is an important food grain legume in Niger facing production losses due to insect pests. this study aims to determine the efficiency of non-chemical methods for managing these pests. A trial was conducted during the 2020 and 2022 cropping seasons at the INrAN station in the Maradi region. A Fischer experimental design with 6 repetitions was used to compare 4 treatments: synthetic chemical pesticide;the entomopathogenic fungus Beauveria bassiana;aqueous extracts of neem seeds, and control. Observations were carried out every three days. the cowpea pod-sucking bug, pod borer, and thrips were the main insect pests recorded. In terms of effectiveness, the synthetic pesticide was the best treatment. It reduced insect pest densities by 71.35% to 90.40% in 2020 and by 35.11% to 42.13% in 2022. Grain yields varied between treatments. Neem seed extract followed the synthetic pesticide and significantly reduced insect infestations in both years. the synthetic pesticide and neem seed extract resulted in yields 3 to 5 times higher than the control treatment in 2020. By contrast, B. bassiana 115 and neem seed extract produced similar yields in 2022. therefore, the results of this study showed that B. bassiana 115 and neem seed extract have insecticidal potential and could be used as an ecological alternative for managing cowpea insect pests in the Sahel.

关键词： Vigna unguiculata Biopesticide Cowpea Insect Pest Niger

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