International Journal of Engineering Research in Africa Vol. 58

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class="info-row-content semibold-middle-text col-md-10 col-sm-9 col-xs-8"> <div class="row"> <p><a href="https://doi.org/10.4028/www.scientific.net/JERA.58">https://doi.org/10.4028/www.scientific.net/JERA.58</a></p> </div> </div> </div> </div> <div id="titleMarcXmlLink" style="display: none" class="papers-block-info col-lg-12"> <div class="row"> <div class="info-row-name normal-text-gray col-md-2 col-sm-3 col-xs-4"> <div class="row"> <p>Export:</p> </div> </div> <div class="info-row-content semibold-middle-text col-md-10 col-sm-9 col-xs-8"> <div class="row"> <p><a href="/JERA.58/marc.xml">MARCXML</a></p> </div> </div> </div> </div> <div class="papers-block-info col-lg-12"> <div class="row"> <div class="info-row-name normal-text-gray col-md-2 col-sm-3 col-xs-4"> <div class="row"> <p>ToC:</p> </div> </div> <div class="info-row-content semibold-middle-text col-md-10 col-sm-9 col-xs-8"> <div class="row"> <p><a href="/JERA.58_toc.pdf">Table of Contents</a></p> </div> </div> </div> </div> </div> <div class="volume-tabs"> </div> <div class=""> <div class="volume-papers-page"> <div class="block-search-pagination clearfix"> <div class="block-search-volume"> <input id="paper-search" type="search" placeholder="Search" maxlength="65"> </div> <div class="pagination-container"><ul class="pagination"><li class="active"><span>1</span></li><li><a href="/JERA.58/2">2</a></li><li class="PagedList-skipToNext"><a href="/JERA.58/2" rel="next">></a></li></ul></div> </div> <div class="block-volume-title normal-text-gray"> <p> Paper Title <span>Page</span> </p> </div> <div class="item-block"> <div class="item-link"> <a href="/JERA.58.1">Optimization of Argon Gas Metal Arc Welding Process Parameters with Regard to Tensile Strength for AISI 310 Stainless Steel Using Taguchi Technique</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Hanmant Virbhadra Shete, Sanket Dattatraya Gite </div> </div> <div id="abstractTextBlock576438" class="volume-info volume-info-text volume-info-description"> Abstract: Gas metal arc welding (GMAW) is the leading process in the development of arc welding process for higher productivity and quality. In this study, the effect of process parameters of argon gas welding on the strength of T type welded joint of AISI 310 stainless steel is analyzed. The Taguchi technique is used to develop the experimental matrix and tensile strength of the welded joint is measured using experimental method and finite element method. Optimization of input parameter is performed for the maximum tensile strength of welded joint using ANOVA. The results showed that welding speed is the most significant factor affecting the tensile strength followed by voltage in argon gas metal arc welding (AGMAW) process. Argon gas welding process performance with regard to the tensile strength is optimized at voltage: 18.5 V, wire feed speed: 63 m/min and welding speed: 0.36 m/min. </div> <div> <a data-readmore="{ block: '#abstractTextBlock576438', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 1 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/JERA.58.11">New and Green Corrosion Inhibitor Based on New Imidazole Derivate for Carbon Steel in 1 M Hcl Medium: Experimental and Theoretical Analyses</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Elyor Berdimurodov, Abduvali Kholikov, Khamdam Akbarov, Lei Guo, Savaş Kaya, Dakeshwar Kumar Verma, Mohamed Rbaa, Omar Dagdag </div> </div> <div id="abstractTextBlock564249" class="volume-info volume-info-text volume-info-description"> Abstract: In this research work, a new and green corrosion inhibitor based on new imidazole derivate (IMD) was introduced for carbon steel in 1 M HCl medium. Its inhibition properties were fully characterised by the gravimetric, electrochemical, surface and quantum chemical analyses. The experimental results confirmed that the inhibition efficiency of IMD was over 99% at 150 mg/L, forming a protective hydrophobic film on the metal surface, which maximally blocked the cathodic and anodic corrosive processes by adsorption. The electrochemical results suggested that the IMD is a mixed-type inhibitor. The adsorption behaviour of IMD was obeyed by Langmuir isotherms. The gravimetric results show that the inhibition efficiency depends on the change of concentration and temperature. The experimental tests were supported by the DFT (density functional theory) measurements, and a good relationship was found among these tests. The observed results of the surface analysis indicated that the metal surface was seriously improved with the presence of IMD. </div> <div> <a data-readmore="{ block: '#abstractTextBlock564249', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 11 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/JERA.58.45">Symmetry-Breaking in a Porous Cavity with Moving Side Walls</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Dalila Menacer, Saadoun Boudebous, Abdeldjalil Slimani, Lakhdar Saihi </div> </div> <div id="abstractTextBlock557569" class="volume-info volume-info-text volume-info-description"> Abstract: In this paper, a numerical investigation of the steady laminar mixed convection flow in a porous square enclosure has been considered. This structure represents a practical system such as an external through flow of cooled-air an electronic device from its moving sides. The heating was supplied by an internal volumetric source with an uniform distribution at the middle part of its bottom, while the other walls were assumed thermally insulated. Moreover, the momentum transfer in the porous substrate was numerically investigated using the Darcy-Brinkman-Forchheimer law. The governing equations of the posed problem have been solved by applying the finite difference technique on non-uniform grids. For all simulations, the Reynolds number and the porosity have been fixed respectively to Re=100 and φ=0.9. Darcy’s value was varied in the range from 0.001 to 0.1. The results detected the existence of a radical change in the contour patterns for Richardson number equal to 11.76 and 11.77 with fixed Da=0.1. This behavior signified that the fluid is fully convected for higher Darcy number. </div> <div> <a data-readmore="{ block: '#abstractTextBlock557569', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 45 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/JERA.58.63">Production and Characterization of Pulp from Banana Pseudo Stem for Paper Making via Soda Anthraquinone Pulping Process</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Emiru Yidnekachew Melesse, Tesfaye Kassaw Bedru, Beteley Tekola Meshesha </div> </div> <div id="abstractTextBlock577306" class="volume-info volume-info-text volume-info-description"> Abstract: The need for pulp and paper currently in the whole world has become shooting up massively. The generation of the pulp, as well as paper from woody materials, has a challenge due to deforestation, huge chemical and energy consumptions. Now, an alternative source for paper is lignocelluloses wastes, because of low cost, low energy, and chemical consumption. Among them, the banana pseudostem was best for the input of pulp and paper production. This investigation was on the production and characterization of pulp from Banana Pseudo Stem for Paper Making via Soda Anthraquinone pulping process. The amount of cellulose (41.45%), ash (12.4%), hemicellulose (23.37%), extractive (12.72%), and lignin (10.46%) contents were obtained at the initial compositional evaluation of the pseudostem. It has excellent fiber length (1.75mm), fiber diameter (22.15μm), an acceptable Runkle ratio (0.55), and flexibility coefficient (159.64). The effect of temperature (130,140 and 150 °C), cooking time (45, 60, and 75 minutes), the concentration of soda (10, 12.5, and 15%), were examined. The maximum pulp yield and kappa number was 36.7% and 22.8 respectively obtained at 10% of soda concentration, at 150 °C, and 63 minutes of cooking time from oven-dried raw material. The produced paper from the banana pseudostem has a tensile index, tearing index, smoothness, and porosity were 78.75 Nm/g, 19.1 mN.m<sup>2</sup>/g, 500-530μm, and 50 sec/100ml air respectively. This study indicates that high strength mechanical property and good surface properties paper can be produced from banana pseudostem pulp with a more environmentally friendly pulping process. </div> <div> <a data-readmore="{ block: '#abstractTextBlock577306', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 63 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/JERA.58.77">Competitive Adsorption of Copper, Zinc, and Chromium from Wastewater Using Corn-Cob Ash: Optimization Approach</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Emmanuel Ikechukwu Ugwu, Jonah Chukwuemeka Agunwamba </div> </div> <div id="abstractTextBlock576421" class="volume-info volume-info-text volume-info-description"> Abstract: Corn Cob ash was used in competitive adsorption of copper, zinc, and chromium from wastewater. The central composite design; a sub-set of response surface methodology was used to optimize the adsorption of the heavy metals. The result of the statistical parameters showed the coefficient of determination (R<sup>2</sup>) of 1.000, 0.999, and 1.000 for copper, zinc, and chromium respectively. The optimal conditions obtained for adsorbent dosage, initial concentration, temperature, contact time, and particle size were 13.20 mg, 79.72 mg/l, 34.95 °C, 40.38 min, and 1400 µm, respectively with the desirability of 1.000. The predicted and the actual values of metal removal obtained were 69.41%, 76.37%, as well as 70.44%, 72.50%, 77.90 % and 71.00% for copper, zinc, and chromium respectively. The ressult indicated a good conformity between the model predicted values and the actual values, thus having small errors of 3.09%, 1.53 % and 0.56 % for copper, zinc, and chromium respectively. </div> <div> <a data-readmore="{ block: '#abstractTextBlock576421', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 77 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/JERA.58.95">Dimensionality Reduction Analysis of the Integrated Solar and Hydraulic Jump Enhanced Waste Stabilization Pond Model Parameters</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Nkpa M. Ogarekpe, Jonah Chukwuemeka Agunwamba, Maurice G. Ekpenyong </div> </div> <div id="abstractTextBlock577516" class="volume-info volume-info-text volume-info-description"> Abstract: The study investigated the structure of the integrated solar and hydraulic jump enhanced waste stabilization pond (ISHJEWSP) variables. Also, to determine the cluster of the most important variables that account for the performance of the ISHJEWSP using principal component analysis (PCA). Three sets of experimental ponds were constructed with varying locations of point of initiation of hydraulic jump. Wastewater samples collected from the inlet and outlet for varying inlet velocities were examined for physicochemical and bacteriological characteristics for a period of nine months. The Pearson’s R-matrix and KMO statistic were used in evaluating the structure of the variables. Consequently, the variables of temperature, pH, algae concentration, solar radiation, and locations of the point of initiation of hydraulic jump were subjected to PCA. Two components had eigenvalues above the Jolliffe’s criterion and in combination explained 90.66% of the total variance. The inflexion of the scree plot justified the retained components. The analysis after rotation revealed that the parameters of pH, temperature, solar radiation, and algal concentration loaded highly to component 1. This underscores the precedence of ambient climatic conditions, alongside the state of the wastewater in general, to the inlet velocity and location of point of initiation of hydraulic jump. </div> <div> <a data-readmore="{ block: '#abstractTextBlock577516', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 95 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/JERA.58.107">Geochemical, Mineralogical and Isotopic Fracturing during the Progressive Evaporation of Chott Djerid Brine (Southern Tunisia)</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Sana Bedoui, Elhoucine Essefi, Houda Besser, Ali Benour, Yosra Ayadi, Faten Khelifi, Younes Hamed </div> </div> <div id="abstractTextBlock576640" class="volume-info volume-info-text volume-info-description"> Abstract: Djerid Chott, in southwestern Tunisia, is one of the biggest salt lakes in the world. This work follows the specific precipitation of evaporites through progressive evaporation of Chott Djerid brines using geochemical, isotopic and mineralogical approaches, to explain the intricacy of the working of saline frameworks controlled basically by climatic driving and the underlying geochemical structure acquired from the geographical system. Toward the finish of every evaporation step, solid and liquid samples went through analyses. Djerid brine is remarkably saline (427.7 g/l) and it is supersaturated contrasted with halite. The outcomes indicated that the Chott Djerid brines shaped fundamentally Cl<sup>-</sup>-Na<sup>+</sup>-SO<sub>4</sub><sup>-</sup> type geochemistry. Added to halite and gypsum as significant minerals, other minor minerals including carnallite, hexahydrite and sylvite were recognized in various phases of progressive evaporation of Djerid brine. Regardless of their low costs, significant minerals are of geo-economic interest because of their high amounts of production. Then, minor valuable minerals secure their geo-economic interest from their excessive costs. In this work, we find the window of precipitation of these valuable minerals' at the evaporation paces of 80% and 100%. </div> <div> <a data-readmore="{ block: '#abstractTextBlock576640', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 107 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/JERA.58.127">Physicochemical Parameters and Suitability for Irrigation of Groundwater Resources from Biskra Area (Southeastern Algeria)</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Fattoum Bouchemal, Samia Achour </div> </div> <div id="abstractTextBlock568361" class="volume-info volume-info-text volume-info-description"> Abstract: This study is part of the more general framework for diagnosis of the quality of water resources in the Biskra area and its suitability for irrigation. This work reports the results of an analysis of physicochemical groundwater quality. Groundwater samples were collected from 12 boreholes in different aquifers exploited in the area, and used for drinking and domestic purposes. The results showed that the water of the limestone aquifer (Maastrichtian) is better than other aquifers (phreatic, Miopliocene, Lower Eocene). This affects more particularly the pH, conductivity (mineralization), total hardness, and concentration of the major elements. As far as the same aquifers (phreatic, Miopliocene, Lower Eocene), present water which classified mediocre highly mineralized for irrigation because EC > 2250 μS/cm (class 4). The Maastrichtian aquifer presents a poor water quality (class 3), according to the Riverside classification. </div> <div> <a data-readmore="{ block: '#abstractTextBlock568361', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 127 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/JERA.58.139">Life Cycle Analysis of the Raseta Pump Using OpenLCA</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Andriamahefasoa Rajaonison, Hery Tiana Rakotondramiarana </div> </div> <div id="abstractTextBlock576383" class="volume-info volume-info-text volume-info-description"> Abstract: Developed and crafted in Madagascar, the Raseta pump is a novel hydraulic ram (hydram) pump using a springs system. It operates differently from other pumps by the exclusive use of water energy due to the water hammer phenomenon induced by the sudden stop of the water flow. The present study initiates the investigation of the environmental impacts of this new type of hydram pump through a life cycle analysis using OpenLCA 1.8. It was found that, when operating in a small-scale water pumping system, the choice of the pump supply pipe material has small differences of environmental impacts, whether the material is made of steel or polyvinyl chloride (PVC). Moreover, compared to a solar pump for the same pumping flow rate, the use of the Raseta pump is more environmentally friendly and less harmful to human health. However, the actual advantageous utilization of such a system needs further studies such as social and techno-economic analysis. </div> <div> <a data-readmore="{ block: '#abstractTextBlock576383', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 139 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/JERA.58.155">Identifying Contractors’ Planned Quality Time in Egyptian Irrigation Projects</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Mohamed Abdel-Hamid, Hanaa Mohamed </div> </div> <div id="abstractTextBlock564502" class="volume-info volume-info-text volume-info-description"> Abstract: During an extremely competitive infrastructure sector such as irrigation projects, quality time (QT) must be determined to can recognize probable quality crisis parts and to direct mind on schedule enhancement chances. The consciousness of planners on the significance of QT could be reflected in their project schedule. This study appears a measurement of planned QT in five infrastructure irrigation projects performed by different five contractors in Egypt. The aim is to aid the contractors to develop their QT preparation and thus enhance their project time based on the results. QT is fundamental classified into two classes: conformance time (CT), and nonconformance time (NCT). Based on many studies, a register of quality proceedings that would be enclosed in every QT groups are then generated. The QT records for every group are recognized and gathered via questions and questionnaire designs. QT is calculated as a proportion of the project duration. It is uncovered that while enormous companies previously have clear information on QT in construction sector, these times are not scheduled in a defined method during a study of regular QT details. During time classification it is also appeared that greater conformance time (CT) lead to lesser nonconformance time (NCT). It is then ended that a lot of effort is still to be made by the contractors to establish a QT documenting procedure which be able to act as a base for their project enhancement planning. </div> <div> <a data-readmore="{ block: '#abstractTextBlock564502', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 155 </div> </div> <div class="block-bottom-pagination"> <div class="pager-info"> <p>Showing 1 to 10 of 15 Paper Titles</p> </div> <div class="pagination-container"><ul class="pagination"><li class="active"><span>1</span></li><li><a href="/JERA.58/2">2</a></li><li class="PagedList-skipToNext"><a href="/JERA.58/2" rel="next">></a></li></ul></div> </div> </div> </div> </div> </div> </div> </div> <div class="social-icon-popup"> <a href="https://www.facebook.com/Scientific.Net.Ltd/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon facebook-popup-icon social-icon"></i></a> <a href="https://twitter.com/Scientific_Net/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon twitter-popup-icon social-icon"></i></a> <a href="https://www.linkedin.com/company/scientificnet/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon linkedin-popup-icon social-icon"></i></a> </div> </div> <div class="sc-footer"> <div class="footer-fluid"> <div class="container"> <div class="row"> <div class="footer-menu col-md-12 col-sm-12 col-xs-12"> <ul class="list-inline menu-font"> <li><a href="/ForLibraries">For Libraries</a></li> <li><a href="/ForPublication/Paper">For Publication</a></li> <li><a href="/insights" target="_blank">Insights</a></li> <li><a href="/DocuCenter">Downloads</a></li> <li><a href="/Home/AboutUs">About Us</a></li> <li><a href="/PolicyAndEthics/PublishingPolicies">Policy & Ethics</a></li> <li><a href="/Home/Contacts">Contact Us</a></li> <li><a href="/Home/Imprint">Imprint</a></li> <li><a href="/Home/PrivacyPolicy">Privacy Policy</a></li> <li><a href="/Home/Sitemap">Sitemap</a></li> <li><a href="/Conferences">All Conferences</a></li> <li><a href="/special-issues">All Special Issues</a></li> <li><a href="/news/all">All News</a></li> <li><a href="/open-access-partners">Open Access Partners</a></li> </ul> </div> </div> </div> </div> <div class="line-footer"></div> <div class="footer-fluid"> <div class="container"> <div class="row"> <div class="col-xs-12"> <a href="https://www.facebook.com/Scientific.Net.Ltd/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon facebook-footer-icon social-icon"></i></a> <a href="https://twitter.com/Scientific_Net/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon twitter-footer-icon social-icon"></i></a> <a href="https://www.linkedin.com/company/scientificnet/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon linkedin-footer-icon social-icon"></i></a> </div> </div> </div> </div> <div class="line-footer"></div> <div class="footer-fluid"> <div class="container"> <div class="row"> <div class="col-xs-12 footer-copyright"> <p> © 2025 Trans Tech Publications Ltd. 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International Journal of Engineering Research in Africa Vol. 58 | Scientific.Net