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Using Water Quality Index for Assessing of Physicochemical Quality of Quaternary Groundwater in the Southern Part of Abidjan District (Côte d’Ivoire)

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Journal of Water Resource and Protection 2019年第10期11卷 1278-1291页

作者： Aristide Gountô h Douagui Innocent kouassi kouamé Jules Mangoua Oi Mangoua auguste kouamé kouassi Issiaka Savané Laboratoire Géosciences et Environnement Unité de Formation et de Recherches des Sciences et Gestion de l’Environnement Université Nangui Abrogoua Abidjan Côte d’Ivoire Unité de Formation et de Recherches Environnement Université Lorougnon Guédé Daloa Côte d’Ivoire

In this study, fourteen physicochemical parameters were monitored at 61 groundwater sampling points located in the southern part of Abidjan District. Each water sampling location was sampled in March and July 2007, representing respectively the long dry season and the long wet season. Groundwater evaluation index and statistical methods were used to assess Quaternary groundwater physicochemical quality in term of drinking and irrigation purposes. The groundwater samples irrespective of seasons fell in mixed K-Na-HCO3 and K-Na-Cl types. Groundwater quality index values varied from 14.01 to 593.44 and from 20.88 to 567.44, in dry and rainy seasons, respectively. In both seasons, 9.83% exhibited poor water quality and 3.27% indicated unsuitable water for drinking purposes. The studied water wells were heavily contaminated with nitrate, nitrite and ammonium in the strongly urbanized areas at Treichville, Koumassi, Marcory, Port-Bou?t and Grand-Bassam. The degree of correlation between physicochemical parameters suggested that groundwater quality was mainly related to geogenic (rock–water interaction) and anthropogenic sources (domestic sewage), and intrusion of marine and lagoon waters in the study area. Sodium adsorption ratio was generally low during study period, indicating most groundwater sampled was suitable for irrigation purposes.

关键词： Hydrochemistry Groundwater Quality Chemical Pollution Abidjan District

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Use of the Inverse Slope Method for the Characterization of Geometry of Basement Aquifers: Case of the Department of Bouna (Ivory Coast)

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Journal of Geoscience and Environment Protection 2019年第6期7卷 166-183页

作者： Rock Armand Michel Bouadou kouamé auguste kouassi Francis Williams kouassi Adama Coulibaly Théophile Gnagne Laboratory of Geosciences and Environment UFR of Sciences and Management of the EnvironmentUniversity of Nangui AbrogouaAbidjanIvory Coast Department of Science and Technology of Water and Environmental En-gineering UFR of Earth Sciences and Mineral ResourcesUniversity of Félix Houphouet-BoignyAbidjanIvory Coast

The inverse slope method (ISM) was used to interpret electric sounding data to determine the geoelectric parameters of the alteration zones (continuous media) and rocky environments (discontinuous environments) of the Bouna Department. Having both qualitative and quantitative interpretation, the inverse slope method (ISM) has the ability to determine the different geoelectric layers while characterizing their resistivities and true thicknesses. In the Bouna department, this method allowed us to count a maximum of four (4) geoelectric layers with a total thickness ranging from 12.99 m to 24.66 m. The alteration thicknesses calculated by the ISM in comparison with those measured in the boreholes showed a linear agreement of the coefficient of determination R2 = 0.8269 with the support of the Nash criterion which showed that this method gave thicknesses of alteration close to 76.76% of that obtained during the drillings.

关键词： Inverse Slope Electric Sounding Geometry of Aquifers Bouna Ivory Coast

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Conceptual Model of Aquifers in the Bedrock Zone of the MarahouéWatershed (Centre-West of Ivory Coast)

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Journal of Geoscience and Environment Protection 2022年第7期10卷 229-256页

作者： kouassi Désiré Bouatrin Innocent kouassi kouame Aristide Gountôh Douagui kouamé auguste kouassi Bi Tié Albert Goula Geosciences and Environment Laboratory Department of Environmental Sciences and Management Nangui University Abrogoua Abidjan Ivory Coast

Marahoué watershed, located in the Center West of Côte d’Ivoire, has experienced significant population growth in recent decades. And a major economic boom linked to intense agricultural activity and the presence of certain industries. This population growth is also accompanied by seasonal water shortages. Hence it needs to better manage the basin’s groundwater, which is a permanent resource and more resistant than surface water to climatic hazards. The objective of this study is therefore to propose a conceptual model of hydrogeological flow for the sustainable exploitation of groundwater resources in the Marahoué watershed. The establishment of the conceptual model was carried out in two stages. The first step consisted in defining the stratigraphic units. For this purpose, three units have been defined. These are the layer of alterite, the useful fissured horizon and the sound basement. The thickness of the layer of alterite varies from 0 to 80 m with an average of 26 m. As for the useful fissured horizon, its thickness is between 43 and 46.5 with an average of 45 m. In addition, the roof of the basement presents a slightly uneven morphology with a North-West, South-East dip and the altitudes are between 150 and 390 m. The second step corresponds to the phase of determining the hydrodynamic parameters. During this phase, the crack porosity, the transmissivity, the conductivity, the storage coefficient, the hydrological balance and the piezometric map were determined. Indeed, these parameters (the crack porosity, the transmissivity, the conductivity and the storage coefficient) confirm not only the heterogeneity of the medium but that the cracked horizon is sufficiently porous to be assimilated to an equivalent continuous medium during the simulation.

关键词： Marahoué Watershed Conceptual Model Ivory Coast

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Assessment of Vulnerability to Groundwater Pollution in the Lobo Watershed at Nibéhibé(Central-West, Côte d’Ivoire)

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Journal of Water Resource and Protection 2020年第8期12卷 657-671页

作者： Yiwa Monique Kamenan Oi Mangoua Jules Mangoua Brou Dibi Sampah Eblin Georges Kouakou Lazare kouassi kouamé auguste kouassi Laboratory of Science and Technology of Environment Jean Lorougnon Guédé University Daloa C&ocirc te d’Ivoire Laboratory Geosciences et Environment Nangui Abrogoua University Abidjan C&ocirc te d’Ivoire

Drinking water supply to people in rural areas is increasingly oriented towards the search for groundwater. However, these resources, which were once of good quality, are currently threatened by various sources of pollution points and diffuse. The objective of this study is to map the intrinsic vulnerability to groundwater pollution of the Lobo watershed in Nibéhibé. The intrinsic vulnerability mapping method, PaPRIKa adapted or PaPRI which acronym is the protection of aquifers (Pa) based on three criteria: P for protection, R for rock type, I represents infiltration was used. The results show three (3) vulnerability classes, which are moderate, high and very high. This map shows that the high vulnerability class (89%) dominates the study area. This predominance shows that the groundwater of the Lobo watershed is at high risk of pollution.

关键词： Pollution Groundwater Vulnerability PaPRI Côte d’Ivoire

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Surgical Site Infections in Trauma and Orthopaedics at Bouaké Teaching Hospital (Côte d’Ivoire)

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Open Journal of Orthopedics 2024年第9期14卷 381-390页

作者： Loukou Blaise Yao Koffi Léopold Krah Aya Adelaïde Natacha kouassi kouamé Innocent M’bra kouamé Jean-Eric kouassi Michel Kodo Department of Trauma and Orthopaedics Bouak Teaching Hospital Bouak Cte dIvoire

Background: Surgical site infections are serious healthcare problems. The aim was to describe the epidemiological, diagnostic, therapeutic, and prognostic aspects of surgical site infections in Trauma and Orthopaedics at Bouaké Teaching Hospital. Method: This retrospective, descriptive, and analytical study was conducted from January 2019 to December 31, 2021. The data studied included prevalence, initial lesions, type of surgical intervention, type of SSI, bacteria involved, treatment, and outcomes. Results: Forty-four (11%) of the 399 patients included in the study developed a surgical site infection. The mean age was 27 years, with 36 male and 8 female. Initial lesions were predominantly open fractures (n = 31;70%), with a mean delay of 48 hours for surgical management. Emergency interventions accounted for 70% (n = 31) of cases. The NNISS infection risk score was 1 in 80% (n = 35) of cases. Superficial infections (n = 34;77%) appeared early, on a mean 6 days postoperatively. Bacteriological analysis primarily identified Pseudomonas aeruginosa (n = 10;23%), sensitive to Imipenem and Chloramphenicol but resistant to Amoxicillin-clavulanic acid, Ceftriaxone, Gentamicin, and Ciprofloxacin. Multidrug-resistant bacteria were found in 89% (n = 8) of cases, with all bacteria resistant to Ceftriaxone. Surgical revision was performed in 10 patients (23%), primarily involving debridement with hardware retention (n = 7;70%). Chloramphenicol was the most commonly used antibiotic post-antibiogram (61%). Outcomes were favourable in 98% of cases. Identified risk factors included the type of lesion according to NRC classification, the delay in managing open fractures, and the NNISS score. Conclusion: The prevalence of surgical site infection was 11%, favoured by the delayed operation of open fractures.

关键词： Surgical Site Infection Open Fractures Pseudomonas aeruginosa Ceftriaxone

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Optimization of Biofuel Formulation by Mixture Design

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Advances in Chemical Engineering and Science 2024年第1期14卷 48-56页

作者： Konan Edmond kouassi Abollé Abollé kouamé Olivier-Marc Kouakou David Boa N’guessan Raymond Kré kouassi Benjamin Yao Laboratory of Thermodynamics and Physical Chemistry of the Environment (LTPCM) UFR-SFA University of Nangui ABROGOUA Abidjan C&#244te d’Ivoire Laboratory of Fundamental and Applied Physics (LPFA) UFR-SFA University of Nangui ABROGOUA Abidjan C&#244te d’Ivoire Laboratory of Industrial Processes for the Synthesis of the Environment and New Energies (LAPISEN) of the Félix Houphouë t Boigny National Polytechnic Institute Yamoussoukro C&#244te d’Ivoire

With the full growth of energy needs in the world, several studies are now focused on finding renewable sources. The aim of this work is to optimise biofuel formulation from a mixture design by studying physical properties, such as specific gravity and kinematic viscosity of various formulated mixtures. Optimization from the mixture plan revealed that in the chosen experimental domain, the optimal conditions are: 40% for used frying oil (UFO), 50% for bioethanol and 10% for diesel. These experimental conditions lead to a biofuel with a density of 0.84 and a kinematic viscosity of 2.97 cSt. These parameters are compliant with the diesel quality certificate in tropical areas. These density and viscosity values were determined according to respective desirability values of 0.68 and 0.75.

关键词： Biofuel Optimization Mixture Design

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Description of Post-Stroke Cognitive Disorders at Abidjan University Hospitals, Côte d’Ivoire

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Neuroscience & Medicine 2024年第2期15卷 92-105页

作者： N’guessan N’cho Arthur kouassi kouamé Léonard Ouattara Niemtiah Tako Neme Antoine Biology and Health Laboratory Felix Houphout-Boigny University Abidjan Cte dIvoire Department of Neurology CHU Yopougon Felix Houphout-Boigny University Abidjan Cte dIvoire

Stroke patients often experience motor deficits and cognitive problems after a stroke. Objective: To improve our understanding of the cognitive consequences of stroke. Method: a descriptive and analytical cross-sectional study was conducted over 12-month period in the neurology departments of the Cocody and Treichville Hospitals in Côte d’Ivoire. Results: Out of 724 patients admitted to the neurology department, 415 (57.32%) were stroke patients, of which 145 (34.94%) were screened. The frequency of global cognitive functioning impairment was 86.21%, significantly higher than the frequency of patients without impairment, which was 13.79%. The study focused on detailing the cognitive status of stroke patients in neurology departments, assessing several cognitive functions during the subacute phase of stroke. These functions included global cognitive functioning, executive functions, language and memory. The frequency of post-stroke cognitive impairment is high among stroke patients in Abidjan. This frequency is comparable to figures found in Subsaharian stroke populations. Demographic and clinical characteristics studied included age, gender, education level, employment status, vascular diseases and cerebral affected area. Among these characteristics, only the education level and the cerebral affected area have been found significant. Conclusion: The incidence of cognitive impairment after a stroke is significantly high among stroke patients in Abidjan.

关键词： Cognitive Disorders Subacute Stroke Related Risk Factors

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Production of Yam Tubers Using Seed Tubers from Vitroplants Regenerated from Aerial Stems in the Yam Species Dioscorea alata (L.) and Dioscorea cayenensis-rotundata (L. & P.) in Côte d’Ivoire

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Advances in Bioscience and Biotechnology 2024年第3期15卷 184-194页

作者： Koffi Honoré kouamé Kouakou Marius Konan Kouadio Ignace kouassi Kouablan Edmond Koffi Assanvo Simon-Pierre N’Guetta Department of des Science and Technology University Alassane Ouattara of Bouaké Bouaké C&#244te d’Ivoire Plant Production Research Unit Department of Natural Sciences University Nangui Abrogoua Abidjan C&#244te d’Ivoire Central Biotechnology Laboratory National Center for Agronomic Research (NCAR) Abidjan C&#244te d’Ivoire Genetics Laboratory of Bioscience Research Unit University Félix Houphou&#235t Boigny (UFHB) Abidjan C&#244te d’Ivoire

The aim of this study is to produce large quantities of yam tubers in the field from seed tubers derived from vitroplants regenerated from aerial stem cuttings and farmers’ tuber seeds. Seed tubers from ten yam cultivars, including five from Dioscorea alata (cDa083, cDa053, cDa115, cDa150 and cDa266) and five from Dioscorea cayenensis-rotundata (cDr015, cDr027, cDr150, cDr206 and cDr148) with distinct agro-morphological characteristics, were used as material. A completely randomized block design with 3 replications was used. In each block, all cultivars and seed types were represented. When put into cultivation, the tubers produced by the vitroplants all germinated and gave 100% healthy plants, compared with 86% to 100% healthy plants for the seed tubers produced by the farmers. Yields per hectare ranged from 10 to 25 tonnes for seed tubers produced by in vitro plants, and from 4 to 9 tons for seed tubers produced by farmers. Seed tubers from vitroplants can therefore be recommended to farmers as a solution to the problem of seed tuber unavailability.

关键词： Yams Vitroplants Seed Tubers Yields

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Assessment of Vulnerability to Groundwater Pollution in the Lobo Watershed at Nibéhibé (Central-West, C?te d’Ivoire)

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Journal of Water Resource and Protection（水资源与保护） 2020年第8期

作者： Yiwa Monique Kamenan Oi Mangoua Jules Mangoua Brou Dibi Sampah Eblin Georges Kouakou Lazare kouassi kouamé auguste kouassi

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Improvement of Rice Plant Root by Kaolin Application in Iron Toxicity Condition at Zoukougbeu (Central-West of Côte d’Ivoire)

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Open Journal of Soil Science 2024年第5期14卷 308-318页

作者： Sehi Zokagon Sylvain Konan kouassi Urbain Adechina Olayossimi Ouattara Amidou kouamé Firmin Bongoua Jeanne Devisme Cherif Mamadou Brahima Koné Dé partement des Sciences et Techniques Universit&#233 Alassane Ouattara Bouak&#233 C&#244te d&#8217Ivoire Centre d’ Excellence Africain sur le Changement Climatique la Bidiversit&#233 et l&#8217Agriculture DurableUniversit&#233 F&#233lix Houphouet Boigny Abidjan C&#244te d&#8217Ivoire Dé partement Agriculture et Technologie Nouvelle Universit&#233 de San-Pedro San-Pedro C&#244te d'Ivoire Unité de Formation et de Recherche en Agroforesterie D&#233partement des Sciences de la Terre Universit&#233 Jean Lorougnon Gu&#233d&#233 de Daloa Daloa C&#244te d&#8217Ivoire Dé partement de Physiologie V&#233g&#233tale Universit&#233 Felix Houphouet Boigny Abidjan C&#244te d&#8217Ivoire Dé patartement des Sciences du sol Universit&#233 Felix Houphouet Boigny Abidjan C&#244te d&#8217Ivoire

In the tropics, lowland rice cultivation is often confronted with the problem of iron toxicity. The solution proposed by research in general is the use of industrial silicon. However, the high cost of industrial silicon limits its adoption by farmers. A study was carried out in Zakogbeu;Center-West of Côte d’Ivoire, to assess the potential of kaolin to mitigate the effect of this soil constraint on the root of the rice plant. Five kaolin-based treatments were analyzed (T0 = 0 kg kaolin ha−1, T1 = 366 kg kaolin ha−1, T2 = 736 kg kaolin ha−1, T3 = 1097 kg kaolin ha−1 and T4 = 1465 kg kaolin ha−1 are 0, 200, 400, 600 and 800 kg SiO2 ha−1) in a device in complete random blocks, with 5 repetitions. The results obtained show that kaolin supply increases the length of the root tissue as well as the number of branching of the root of the rice plant. Root tissue increased from 10 cm with T0 treatment to more than 15 cm with treatment T4. The microscopic observation of the roots shows that in the treatment T0, the roots present only primary ramifications and the tertiary and quaternary ramifications are observed with the treatments T3 and T4. The contribution of kaolin is an alternative to inhibit the effect of iron toxicity on the rice plant root development in iron toxicity condition.

关键词： Iron Toxicity Kaolin Root Rice Cote d’Ivoire

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