http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/16 SPS Sat, 02 May 2026 22:46:57 GMT 2026-05-02T22:46:57Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/29804 Title: Behaviour of Contaminant in a Flow due to Variations in the Cross-Flow dispersion under a Dirichlet Boundary Conditions Authors: Jimoh, O. R; Adebayo, A; Salihu, N. O; Bako, D Abstract: The advection-dispersion equation (ADE) is mostly adopted in evaluating solute migration in a flow. This study presents the behavior of contaminant in a flow due to variations in the cross-flow dispersion under a Dirichlet boundary conditions. The analytical solution of a two-dimensional advection-dispersionequation for evaluating groundwater contamination in a homogeneous finite medium which is initially assumed not contaminant free was obtained. In deriving the model equation, it was assumed that there was a constant point-source concentration at the origin and a Dirichlet type boundary condition at the exit boundary. The cross-flow dispersion coefficients, velocities and decay terms are time-dependent. The modeled equation was transformed using some space and time variables and solved by parameter expanding and Eigen functions expansion method. Graphs were plotted to study the behavior of the contaminant in the flow. The results showed that increase in the cross-flow coefficient decline the concentration of the contaminant with respect to increase in time, vertical distance and horizontal distance in different patterns Mon, 01 Jan 2024 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/29804 2024-01-01T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/29803 Title: MATHEMATICAL MODELING OF BLOOD FLOW IN THE STENOSED ARTERY Authors: Salihu, Omeiza Nasiru Abstract: In this paper, an analytical study of effects of blood flow in the blood vessels has been investigated. The viscosity of the blood is assumed to be varying radially with hematocrit throughout the region of the artery. The blood flow is assumed to be Newtonian fluid, incompressible, laminar, and steady. In order to model this problem, Navier-Stokes equations was used to derive the governing equations that represent this problem. We simplified the governing equations by linearizing the equations and solved by finite different method. We observed that the size of the blood vessel influenced the blood flow. A little change on the cross-sectional value makes a very significant change on the blood flow rate. Fri, 01 Jan 2021 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/29803 2021-01-01T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/29543 Title: Utilizing Microbial Fuel Cells For Simultaneous Treatment Of Solid Waste Water And Energy Generation Authors: Aliyu, Shakirat, Bukola Abstract: The proposed biocatalyst utilized in the microbial fuel cell (MFC) experiment demonstrated exoelectrogenic activity, with species such as Mycobacterium and Shewanella (Pseudomonas) sourced from sewer wastewater. Chemical parameters from the initial experimental trial did not comply with Environmental Protection Agency (EPA) limits. The total suspended solids (TSS) in the second MFC trial were the only parameter to meet the EPA threshold of 50 ppm, with influent and effluent concentrations of 96 ppm and 23.1 ppm, respectively. Consequently, supplementary treatment methods are required to achieve EPA discharge standards. The second trial indicated that the MFC setup effectively reduced metal concentrations, including Cr, Mn, Pb, and Zn, to levels that satisfy EPA surface water effluent discharge criteria. Wed, 01 May 2024 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/29543 2024-05-01T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/29340 Title: Groundwater investigation within the basement complex, North Central Nigeria, using magnetic and resistivity method Authors: ADETONA, Adebayo Abbaas Abstract: The research focuses on using an integrated approach to locate viable locations for sitting boreholes within the Bosso local government area of Niger State. An area within the basement complex in North Central Nigeria is enclosed by longitudes 6.25′ to 6.31′ and latitudes 9.35′ to 9.45′, with a total area of 16 by 8 km2 . This work is central to employing both magnetic and electrical methods of exploration. The derivatives of residual magnetic intensity data for the area were employed to locate regions within the area that are fractured or faulted and could give access to the required underground water. This was followed by conducting Vertical Electrical Sounding (Schlumberger array) within two selected sites within the faulted area and one site outside the faulted area to serve as a control. First vertical derivative displayed lineaments labelled (A), (B), (C), (D), (F), and (G), which are mostly in the Northeast–Southwest (NE-SW) direction. Three sites were chosen for Vertical Electrical investigation for groundwater; sites A (on latitudes 9° 40′ 37.11″ to 9° 41′ 37.1″ N and longitudes 6° 29′ 52.64″ to 6° 30′ 51.56″ E) and B (latitudes 09° 40′ 37.17″ to 09° 41′ 37.15″ N and longitudes 06° 29′ 51.66″ to 06° 30′ 51.55″ E) are within the fractured zones and site C is outside the fractured zone which serves as a control. Thirty-six (36) VES points were sampled on each of the three sites measuring 500 by 500 m2 . Result of Vertical Electrical Sounding carried out indicated three geologic layers comprised of topsoil, intermediate clay formation, and weathered/fractured or fresh basement. The depth of the basement at VES points within sites A and B varies from 25 to 48 m; these are within the faulted zone, while depth of overburden in site C used for control varies from 6 to 18 m. Hence, VES points located within sites A (1) and B (2) are viable for groundwater exploration; points A2, A5, B4, B5, C2, C4, D4, D5, E1, E3, and F4 are high conductivity zone which are prolifc for groundwater potential. The depth range for aquifer potential zones is between 22.7 and 50.4 m. Result from site C equally shows two layers, more than 90% of the VES which are not viable for groundwater potential. This work thus recommends sitting of borehole within VES points on site A or B for good yield and authenticates the viability of integrated algorithms for groundwater exploration in the basement complex region. Description: Springer+ Basic €32.70 /Month Get 10 units per month Download Article/Chapter or eBook 1 Unit = 1 Article or 1 Chapter Wed, 01 May 2024 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/29340 2024-05-01T00:00:00Z