DSpace Angular :: Browsing by Author "Egbeyale Godwin B"

Browsing by Author "Egbeyale Godwin B"

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Attenuation characteristic of clay irradiated with x-ray in the range between 40keV and 129 keV
(IOSR, 2017-12) Egbeyale Godwin B; Adegoke james A; Faluyi Oludotun O
The linear attenuation coefficient of clay at varying incident of energies is an important characteristic that needs to be studied and determined prior to using such a material in radiation protection. The linear attenuation coefficient and intensity as well as thickness were determined for natural clay (A) and artificially contaminated clay (B) to assess their use in radiation shielding. A narrow collimated beam of x-rays from sources with varying energies were passed through various thicknesses of clay slabs. The attenuation in the incident intensity of the beam was determined for each thickness of the clay slabs. Linear attenuation coefficients of A and B were compared with that of concrete. The results showed that linear attenuation coefficient value of artificially contaminated clay is higher than concrete by 37 % at 40keV.Therefore, artificially contaminated clay is a good absorber of radiation and can be used as x-ray wall material.
CHARACTERIZATION OF THERMAL PROPERTIES BEHAVIOUR OF CLAY IN EKITI STATE, SOUTH WESTERN NIGERIA
(Nigerian Association of Mathematical Physics, 2018) Egbeyale Godwin B; Adegoke Jame A
Thermal quality of material is a useful property in building engineering. Today we deal with increasing requirements for quality of brick products, particularly in terms of thermal properties. These characteristics of products depend on many factors, such as conductivity. This paper presents results of the thermal properties of clay slabs, sampled at five different locations in Ekiti state. KD2 probe was used to determine the thermal properties of the slabs. Thermal conductivity, thermal diffusivity and specific heat capacity range from 0.12 to 0.17 W/mK; 6.62 to 10.9 m2 /s and 8.5x10 3 to 9.85x10 3 J/kgK, respectively. The results are useful data for builders and agriculturists.
Comparative Assessment of Radioactivity Concentration in Sweet Potatoes from Different Geopolitical Zones of Nigeria
(IEEE, 2023) Ajani Adegbenro Sunday; Egbeyale Godwin B; Shogo Olaide Eyiwumi; Odeyemi Charity Segun; Galadima Abdullahi Nasir
Evaluation of the specific activity of radioactivity in tubers is an important tool in the assessment of human internal exposure to radiation through ingestion. In this research, the activity concentrations of natural radionuclides 40 K, 238 U and 232 Th in sweet potato samples taken from different farm lands in the six geopolitical zones of Nigeria were determined by means of gamma spectrometry. Using standard calibrated NaI (TI) and shielded detector coupled to a computer resident quantum MCA2100R Multichannel analyzer for 36,000 s. The activities were estimated to be 526.39±51.40, 8.55±1.76 and 1.14±0.42 Bq/kg respectively for 40 K, 238 U and 232 Th. The estimated daily intake through potato diet are 6.6622, 4.6860, 4.6748, 2.75103, 2.7453, and 2.3983 Bq.d–1 for South-East (Abia), South-South(Edo), South-West(Oyo), North-Central (Kwara), North-West (Sokoto), and North-East (Adamawa) respectively.. Findings showed that potato plants uptake and transport radionuclides from the soil by the root system. It also showed that 40 K is the most radionuclides contaminant presents in the farm soil where the potato plants were grown. The daily intake of radionuclides was also observed to be highest in 40 K. This may be due to the use of phosphate rich fertilizer in the farmlands where they were grown. The overview of the research showed that the annual effective doses due to potato diet, at this present rate, pose no significant threat to the public.
Comparison Of Water Quality From Boreholes And Hand-Dug Wells Around And Within Malete, Kwara State, Nigeria
(iosrjournals.org, 2025-05) Egbeyale Godwin B; Yussuff Quadri B; Ogunseye Titus T; Bello Adekunle K
The increase in water consumption and health challenge in Malete as a result of increase in population of students and migrants cause an alarm. This study was carried out to compare the quality of selected machine drilled boreholes and hand dug wells for drinking. Samples were taken from six locations around and within Malete, Kwara State, Nigeria and tested for physicochemical and microbiological parameters using standard analytical methods. Range of values obtained for the various parameters for borehole samples are: Colour (9- 57.00 PCU), turbidity (0.00 FTU), conductivity (101.14-303.38 FTU), total dissolved solids (TDS) (148.57- 266.29 mg/L), total alkalinity (12.33-20.00 mg/L), Iron (0.01- 1.97 mg/L), Nitrate (2.89-8.11 mg/L), pH (3.86- 6.08 mg/L), hardness (17.1-68.4 mg/L), Manganese (0-0.13 mg/L), Coliform (0.12-0.22 cfu/mL) and Escherichia coli (0 cfu/mL). While values obtained for well samples are: Colour (35-177.57 PCU), turbidity (6.25-45.86 FTU), conductivity (139.57-300.78 FTU), TDS (525.50-801.11 mg/L), total alkalinity (116.03- 208.07 mg/L), Iron (0.04-0.21 mg/L), Nitrate (6.77- 12.01 mg/L), pH (4.76-5.95 mg/L), hardness (34.2-85.5 mg/L).. Borehole water had values for most parameters within the stipulated Nigerian standard for drinking water quality. However, pH values of borehole samples were very low, thus indicating that both borehole and well water require treatment before drinking.
Effect of Prenatal Exposure to Electromagnetic (2.45 GHz) Radiation on Liver Organ of Albino Rat’s Offspring
(Adeleke University journal of science, 2025-06) Oyero O P; Amuda D B; Adeleke D K; Ajani Adegbenro Sunday; Aremu A A; Egbeyale Godwin B; Oyero A B; Oni A A
This study was aimed to examine the effect of 2.45 GHz radiofrequency radiation prenatal exposure on the liver of first filial generation (F1) of albino rats. Two specially designed electromagnetic field cages containing three (3) pregnant rats each were marked as experimental exposed group (EEG) and control unexposed group (CUG) in this study. A portable radio picostation of RF up to 2.45 GHz with Ubiquitous Network, USA, with its integrated omnidirectional antenna was placed inside the EEG cage at 15 cm proximity to the pregnant rats to serve as RF radiation source. Pregnant rats in CUG cage were kept unexposed. Radiofrequency radiation exposure was performed on pregnant rats in the EEG cage for 1 hour everyday between 13th to 21st day of gestation. Power density of 0.066 W/m2 (5 V/m) was maintained during the period of exposure. After parturition, two new groups namely New-EEG and New-CUG were established from pups obtained from EEG and CUG respectively. Male rat pups from New-EEG and New-CUG were sacrificed on 50th day postnatal and their livers were harvested for histological examination. Result from the photomicrograph revealed degenerated liver in New EEG characterized by a mild loss of liver parenchyma, some mild derangement in the cellular profiles, severe hemorrhage and presence of inflammatory red cells within and around the central vein including the sinusoids as against New-CUG. Result of this study showed that RF radiation prenatal exposure caused morphological changes in the liver of F1 generation of albino rats.
Experimental determination of the flow rate of liquids through fine sand in a narrow tube
(KWASU international journal of education, 2024-09) Egbeyale Godwin B
The flow rate of liquid has an essential applications in various field of building and civil engineering This research therefore investigates the flow dynamics of liquids through fine sand packed within a narrow tube, aimed to determine experimentally the rate of flow behaviour of five different liquids in fine sand of the same size. Darcy's method was used to acquire the results. The experimental setup involved liquids such as water, kerosene, petrol, vegetable oil, and palm oil labeled as Liquid A, B, C, D, and E respectively. Results revealed elaborate relationships between the nature of the liquid and flow rate; shedding light on the role of the density of the liquid and the ability of such liquid to flow through the sand pore in governing fluid movement. Hence,it contributes to a deeper understanding of the viscosity of the fluids and have potential applications in soil and hydro-engineering
Experimental investigation of contaminated clay slabs for x-ray shielding
(IOP, journal of earth and environmental science, 2022) Egbeyale Godwin B
The advent of radiation is a challenge to the human race therefore; a suitable material is a solution to effective radiation shielding. This research aims to investigate the effectiveness of clay slabs mixed with some heavy metals in radiation shielding. Thereafter, absorption coefficients (mass and linear) were calculated from both incident and transmitted intensity measured with a detector at different energies: 40 keV, 60 keV, 80 keV, 100 keV,120 keV, 150 KeV and 200 Kev. The following procedures were taken: the clay was mixed with heavy metals (Lead, Nickel Cadmium, Zinc and Copper) using the ion exchange capacity technique and then slabs were moulded using a wooden frame of dimensions 4 cm x 4 cm x 1 cm. A narrow collimated beam transmission geometry condition was used for the measurements. The measured values of these parameters were in good agreement with the literature. At selected energies, the values of linear and mass attenuation for lead were 2.29 cm-1 and 0.466 gcm-2, 1.58 cm-1 and 0.392 gcm-2, 1.23 cm- 1 and 0.281 gcm-2, 1.09 cm-1 and 0.216 gcm-2, 0.88 cm-1 and 0.180 gcm-2, 0.74 cm-1 and 0.168 gcm-2 and 0.57 cm-1 and 0.161 gcm-2, respectively. The results obtained were compared with concrete. The clay slabs mixed with heavy metal showed good shielding properties for moderate radiation energy. Hence, these slabs are feasible and cost effective compared with traditional concrete used for construction.
EXPERIMENTAL MEASUREMENT OF SIGNALS ATTENUATION OF SOBI FM AT VHF ALONG ILORIN - JEBBA ROAD, NIGERIA.
(NJP, 2023) Ajani Adegbenro Sunday; Egbeyale Godwin B; Yusuf O A; Aliu T O; Aremu O A; Odeyemi C S; Oyero O P
The study of propagation loss and fade margin of 101.9MHz (Sobi FM) signals along Ilorin (Lat 80541 & Long 40551E) – Jebba (Lat 90111N & Long 40821E) road at very high frequency (VHF) band was done experimentally using spectrum analyzer. Alongside theoretical calculation to determine the attenuation was also done using Friis and Free Space attenuation equations. The attenuation and fade margin were measured regularly at intervals of two kilometers (2 km) from the base station up to a total of sixty kilometers (60 km) along the chosen axis. The analytical models were obtained in form of polynomial equations for received power, measured attenuation and the fade margin of the signals. The calculated results correlated with the measurements (Correlation coefficient value R2 = 1), but gave deviation when compared with the measurements. The variance of the results for the existing formula with the measurements was adjudged to hills, valleys, trees and bends along the links. The highest value of the fade margin obtained (75.89 dB) did not exceeded the receiver’s sensitivity of 80 dB, which implies that the radio-signals can be improved, by increasing the height and the power of transmitting antenna. This research provides information on improving Sobi FM transmission coverage and a guide to upgrade or redirect their transmission signals appropriately.
Geochemical Investigation of the Concentration of Some Metals in Well Water, Malete, Kwara State
(IJLTEMAS, 2024-12) Egbeyale Godwin B; Ajani Adegbenro S; Ogunseye Ttitus T; Ogunbiyi O
Access to safe and clean drinking water is essential but underground water contamination by some (heavy) metals poses a serious threat to water quality in many areas. This research focus was to analyze the concentration of various metals in underground water samples obtained from different locations in Malete, Kwara State, Nigeria. The metals of interest include lead (Pb), chromium (Cr), manganese (Mn), uranium (U), and cobalt (Co), which are associated with adverse health and environmental effects, such as cancer and other forms of diseases. Through atomic absorption spectrophotometry (AAS), the samples collected from Westend 1, Westend 2, Yidi road, New Yidi road, and School Road were analyzed to assess the concentration of some metals that can pose health risks. The results showed that the average lead (Pb) concentration across samples was 0.07 mg/L, chromium (Cr) was 0.02 mg/L, the average manganese (Mn) concentration was 0.16 mg/L, Uranium (U) averaged at 0.02 mg/L and Cobalt (Co) was found at an average concentration of 0.03 mg/L. The results were compared with the World Health Organization (WHO) drinking water quality standards. Chromium (Cr) concentration was below the WHO standard of 0.05 mg/L suggesting a low risk of chromium toxicity. while other metals were above the standard. Hence ,the results identified potential sources of metal contamination and represents a significant step toward addressing the environmental and health challenges posed by some metals contamination in Malete
Geoelectric Assessment of Groundwater Potential in Erin-Ile Basement Region Complex of Southwestern Nigeria
(Nig. J. Pure & Appl. Sci., 2025) Olasunkanmi N k; Babawale J A; Egbeyale Godwin B; Oladunjoye H T; Magawatta U Z; Jimoh Y A; Fatola M K
This study presents a geoelectric evaluation of groundwater potential in Erin-Ile, situated in the basement complex terrain, utilizing Vertical Electrical Sounding (VES) to delineate lithological layers and assess aquifer characteristics. The study area relies entirely on groundwater for daily water supply, leading to challenges such as low borehole yields and increased water demand due to population growth and infrastructure development. The resistivity and thickness parameters analyzed to understand the subsurface hydrogeological structure. Notably, the study employs H-Type and KH-type curves to categorize lithological layers as lateritic soil, weathered basement, and fractured/fresh basement. Groundwater potential analyses consider aquifer resistivity, thickness, hydraulic conductivity, and transmissivity. The results indicate varying groundwater potential across the 50 VES points, with transmissivity ranging from -931.6 to 474.37 m²/day. Of these points, 74% are classified as having moderate potential, 24% as having low potential, and 2% as having negligible potential. No locations were identified with high or good groundwater potential. The southwestern part of the study area is predominantly characterized by moderate groundwater potential. This research contributes valuable insights into the hydrogeology of Erin-Ile, offering a foundation for sustainable groundwater resource management. This study provides valuable insights into the hydrogeology of Erin-Ile, emphasizing the importance of geoelectric methods in assessing groundwater potential. The findings highlight opportunities for improving groundwater resource management and optimizing water supply infrastructure.
Geophysical Investigation of Building Foundation in Part of Ilorin, North Central Nigeria Using Electrical Resistivity Method
(IOP, 2019-10-21) Egbeyale Godwin B; Ogunseye T T; Ozegin K O
Electrical resistivity method has been performed using Vertical Electrical Sounding (VES) technique at a Bishop Smith Memorial College, Ilorin, Kwara State to examine the geophysical parameters that can be used to evaluate the subsurface competency. Eight VES stations were sounded, using Schlumberger configuration for data acquisition with current electrode spacing varying from 1.0 to 140.0 m. The VES data obtained were interpreted using ipi2win+ip Software. The field data acquired was presented as geoelectric sounding curves and geoelectric section. The interpretation of the field results revealed heterogeneous subsurface geologic sequence probed to 34.6 m and beyond. It also showed presence of near surface linear geologic structures of varying lengths, depths and attitude which suggest the competent zones for foundation laying. The major subsurface layers are the top soil which consists of interlocking and concretional lateritic stones and clayey sand, weathered basement, fractured basement and fresh basement. For building development in the study area, the topsoil must be excavated to at least the Fresh basement (competent layer) to avoid building deformation.
GEOPHYSICAL INVESTIGATION OF PRE-BUILDING FOUNDATION OF KWARA STATE UNIVERSITY QUARTER USING ELECTRICAL RESISTIVITY METHOD.
(NJP, 2023) Egbeyale Godwin B; Olasunkanmi N K
Incessant increase of collapsed buildings has raised alarm in our society. Many buildings collapsed due to many factors, in which the foundation is major. If the foundation is weak, the structure placed is in danger. In this research, the foundation of Kwara State University Staff Quarters was investigated before laying the structure on the site location. The electrical resistivity method was used to investigate the subsurface geologic layer with a view to determining the depth to the bedrock and thickness of the geologic layers. Vertical Electrical Sounding (VES) using Schlumberger array was carried out. ABEM terrameter (SAS 300) was used for the data acquisition. The field data obtained was analyzed using computer iterative modeling using the WinResist software. The VES results revealed the heterogeneous nature of the subsurface geological sequence: hardpan topsoil (clayey and sandy-lateritic), weathered layer, partly weathered or fractured basement, and fresh basement. The resistivity value for the topsoil layer varies from 40 Ωm to 450 Ωm with thickness ranging from 1.25 m to 7.5 m. The weathered basement has resistivity values ranging from 50 Ωm to 593 Ωm and thickness of between 1.37 to 20.1 m. The fractured basement has resistivity values ranging from 218Ωm to 520Ωm and thickness of between 12.9 to 26.3 m. The fresh basement (bedrock) has resistivity values ranging from 1215 Ωm to 2150 Ωm with infinite depth. However, the depth from the earth’s surface to the bedrock surface varies between 2.63 to 34.99 m. The study stressed the importance of the findings in civil engineering structures.
INTERPRETATION OF AEROMAGNETIC DATA OF OYO AREA, SOUTHWESTHERN NIGERIA
(International Journal of Science Academic Research, 2022-03) Egbeyale Godwin B; Ogunseye Titus T; Ajani Adegbenro S; Bello Adekunle K
The study presents aeromagnetic data interpretation which involves the interpretation of aeromagnetic data features. Due to Magnetic properties of the earth crust, aeromagnetic anomalies over Oyo town are evaluated to map the magnetic lineaments and estimate the depth to the basement. The aeromagnetic data, from the study area sheet 241 Oyo, acquired were subjected to various filtering and processing technique which in turn properly displays the magnetic anomalies and magnetic intensities. Butterworth was applied to improve the signal to noise ratio, to reduce magnetic equator to properly position anomalies and to remove grappling effects. Gaussian filter was also applied to remove the regional effects thus leaving only the residual anomalies. Other processing techniques such as Upward continuation of 500m, 1000m, 1500m and 2000m, derivatives in x, y directions, analytic signal to delineate magnetically active zones, averaged power spectrum, Euler Deconvolution. The result shows that the depth to the top of the deepest magnetic source of about 2.3 km, depth to the shallow source ranges from 0.25 to 0.5km The obtained data shows that there is an abundance of positive anomalies that correspond to the migmatite-gneiss complex which is of moderate intensity. Derivatives in x, y and z directions revealed the parallel to sub-parallel lineaments which generally trends NE-SW direction except for major lineament that cuts through the migmatite-gneiss complex which trends in NW-SE direction. All these observations were made from qualitative and quantitative data interpretations, which in turn support magnetic information of the area.
Investigation of Electrical Resistivity and Conductivity of a Geological Material (Clay) in Some Parts of Ilorin West Local Government, Kwara State
(Nigerian Journal of Physics, 2024-06) Egbeyale Godwin B; Ajani Adegbenro Sunday; Adekunle M J
The cost and availability of electrical components have been a major challenge to Nigerian scientists and engineers. Thus, this study aimed at investigating geological material (clay) to alleviate the challenge facing the field of science and engineering. The study determined the electrical resistivity and conductivity of a geological material from three different locations in Ilorin West Local Government Area, Kwara State: Egbejila, Oko-Erin and Baboko. The samples were sieved, molded into cylindrical form and dried. Thereafter, their electrical properties were determined using electrical method. The resistance of the samples was determined from the voltage-current (V-I) graph. Consequently, the resistivity was determined by using sample’s resistance, area and length. The conductivity was calculated from the reciprocal of resistivity. The electrical resistivity and conductivity of the samples from Egbejila, Oko-Erin and Baboko were 0.0850 m and 11.7647 (m)- 1 , 0.0924 m and 10.822 (m)-1 , and 0.0251m and 39.841 (m)-1 respectively. The result obtained from the study showed that the geological material (clay) can be used as alternative material for industrial (based) resistor, the study further reduced the stress, cost, and non-availability of resistors’ importation and thereby our locally made geological material can be used as a substitute.
Simplified Physics for advance studies
(AZ, Ilorin, 2025) Egbeyale Godwin B; Ajani Adegbenro Sunday
Thermal properties of some selected materials used as ceilings in building
(Nigerian Society of Physical Sciences, 2024) Egbeyale Godwin B; Ajani Adegbenro S; Oyatomi Tomisin M
Thermal properties of materials are a crucial area of interest in the building industry. This study investigated the thermal properties of Polyvinyl Chloride (PVC), Plaster of Paris (POP), asbestos, and cardboard, commonly used as ceiling materials. The steady-state method was employed to determine the thermal properties; thermal conductivity, thermal resistivity, thermal diffusivity, thermal absorptivity, and density). The obtained results of thermal conductivity of PVC, POP, and Asbestos cardboard are 0.1083 W/mK, 0.1314 W/mK, 0.1068 W/mK and 0.0851 W/mK, respectively, and are within range of values 0.0851-0.1314 W/mK The thermal resistivity of the cardboard, POP, Asbestos and PVC are 11.7509 (W/mK)-1, 7.6103 (W/mK)-1, 9.3633 (W/mK)-1 and 9.2336 (W/mK)-1, respectively. The results of thermal diffusivity of PVC, Asbestos, POP, and cardboard are 6.34 × 10-7 m2 /s, 6.0 × 10-8 m2 /s, 1.20 × 10-7 m2 /s, and 8.0 × 10-8 m2 /s, respectively. The results of thermal absorptivity of cardboard, PVC, POP, and Asbestos are 21.31 x10-2 m-1, 7.57 × 10-2 m-1, 17.40 × 10-2 m-1, and 15.07 × 10−2 m-1, respectively. The density results of POP, PVC, Asbestos, and cardboard are 79.84 kg/m3 , 203.59 kg/m3 , 824.13 kg/m3, and 645.81 kg/m3 respectively. The results revealed some materials’ thermal properties to understand their behavior as they interact with heat fluctuation. In comparison, the results revealed that PVC and asbestos are better materials for building insulation since they have good thermal efficiency.

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