Browsing by Author "Ajani Adegbenro Sunday"

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    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.
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    CONSTRUCTION OF A LOW-POWER RATING FM TRANSMITTER RADIO WITH AUDIO CONSOLE FOR COMMUNITY BROADCAST AND SECURITY ALERT
    (IEEE, 2023) Ajani Adegbenro Sunday; Ogunbode Olusoji Amos; Egbeyale Godwin Babatunde; Odeyemi Charity Segun
    The security challenges experienced in different communities of Nigeria require initiatives from every stakeholder, hence the development of this miniaturized FM transmission console for information dissemination within a localized community. The early transmitter for radio broadcasting was so bulky and laborious that they occupied large space and heavy circuitry. The circuits were mainly designed with valves and other active components, which are responsible for the large size. With the advent of semiconductor materials such as transistors and integrated circuits, electronic equipments are now becoming miniaturized such that small transmitters are now becoming handy and compact. In line with this, a complete radio broadcasting equipment that is compact and locally designed is constructed in this research. The system units are of two categories namely: the audio console for processing voice with music mixer and the transmitter unit where the center frequency is generated. This project is aimed at serving community such as Estates or villages for broadcasting urgent information using a small radio broadcasting FM transmitting at 107.0 MHz with a power rating of 1 watt and covers a distance of 1 kilometer irrespective of directivity. The output audio signal was tested for different hours of the day and production was received with noticeable voice output. The radio broadcasting transmitter can also be used to disseminate information within large industries, hospitals and universities. The constructed device is recommended for security alerts in areas where security challenges are currently taking place in the Nigeria.
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    DESIGN AND CONSTRUCTION OF AUTOMATED EGGS INCUBATOR FOR SMALL SCALE POULTRY FARMERS
    (IJTRS, 2020) Olusoji Amos Ogunbode; Ajani Adegbenro Sunday; Egbeyale Godwin Babatunde; Adeniji Muyideen Olalekan
    This paper demonstrated the design, construction and performance evaluation of automated eggs incubator for poultry farmers. The aim of this research was to produce a low cost user friendly modern incubator to increase the production of day old chicks for small and medium scale poultry farmers. The incubator has the hatching capacity of 100 eggs. Factors that were considered during the performance evaluation of the incubator were humidity, 55% and temperature, 37° C during the first 18 days and were maintained at 37.5 °C till hatching. Turning of eggs was achieved with the use of tilting trays mechanism controlled by a programmed electric motor. The trays were lifted through an angle of 40° either side of horizontal at every hour and lasted for four minutes. 100 fresh, healthy, well developed and matured eggs were used to test the incubator. The result of the test revealed the following average values- fertile eggs 95, infertile eggs 5, hatched eggs 85 and hatchability of 89.47% was achieved.
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    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.
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    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.
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    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.
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    Proposed Non Invasive Detection of Malaria by Spectral Analysis of Light of Varied Wavelengths through the Blood
    (American Research Journal of Biomedical Engineering, 2022-01) Ajani Adegbenro Sunday; Ogunbode Olusoji Amos; Egbeyale Godwin Babatunde; Oyero Olaoluwa Peter; Adewumi Adebayo Segun; Ajani Oluwatayo Sandra; Galadima Abdullahi Nasir; Yirenkyi Paulina Funmi
    Malaria is a significant public health problem in many parts of the world. Accurate diagnosis and control currently relies on the invasive detection of parasitemias in the blood samples. This technique is invasive, increases risk of blood-borne disease transmission, and is uncomfortable for the patient. This research summarizes the diagnostic techniques that have been used to detect malaria in blood samples and their limitations. It is important to understand that noninvasive testing of malaria can provide adequate check and control high malaria rate by promoting early detection and treatment from mild to moderate to serve cases and noninvasive detection will never be achieved without good calibration approach. At this point, we are far away from reaching the aim of noninvasive detection of malaria through blood in the body, with many technical problems yet to be resolved. This research provides information that may be useful for future development of highly efficient non-invasive malaria detection methods.
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    Simplified Physics for advance studies
    (AZ, Ilorin, 2025) Egbeyale Godwin B; Ajani Adegbenro Sunday