http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/120 2026-06-18T03:00:44Z 2026-06-18T03:00:44Z Moses, A. S. Adewuni, O. http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31326 2026-05-18T23:53:56Z 2023-04-27T00:00:00Z

Title: Adaption of electric field strength models for terrestrial television broadcast application in Ekiti state, Nigeria Authors: Moses, A. S.; Adewuni, O. Abstract: Electric field strength propagation models play vital roles in planning terrestrial television network coverage, the interference estimations and analyzing the network signal. This work adapted some existing empirical electric field strength models that are best suitable for Ekiti State in Nigeria, using ultra high frequency (UHF) signal. A television signal (Broadcasting Service of Ekiti State (BSES)) was used for this work. The propagation models considered are: free space, Hata, ITU-R and ERC Report 68 models. The BSES channel 41 station transmits at a frequency of 631.25 MHz for video signal. The signal levels of the transmitted signal were measured radially along four routes using a digital signal level meter and the corresponding distances were also measured using a global positioning system (GPS). Data processing and computations were carried out and the results show that the modifed free space model gives a better prediction for the electric field strength in Ekiti State with a correction factor of -25.48 and root mean square error of 6.21 dBµV/m

2023-04-27T00:00:00Z Mamman, S Ibrahim, A. G. Moses, A. S. http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31324 2026-05-18T23:42:04Z 2024-04-22T00:00:00Z

Title: Computation and Analysis of Electrical Loads for the Application of Solar PV Power System in Maternal and Neonatal Hospital Minna Authors: Mamman, S; Ibrahim, A. G.; Moses, A. S. Abstract: This study focuses on load assessment and analysis of a solar energy system for Maternal and Neonatal Hospital Minna, Niger State. The aim is to compute and analyse the electrical load of the hospital in readiness for solar PV application. The study involves the survey of the site through several visitation of the premises for some physical and structural features in the environment which form critical parameters or serve as guide to certain design considerations in the solar photovoltaic power system design for the hospital. The analyses of the equipment were done by considering the power wattage of each equipment and appliances according to the hours of their usage thereby ascertaining the energy consumption and demand. The result shows that energy consumption of the hospital is 301034.86 VAwhile the total energy demand of the hospital is 2602700VAh. It was obvious that certain medical equipment such as Neonatal incubator, Blood Bank Refrigerator, Autoclave machine, Patient monitor, Concentrator has high energy consumption due to their operating capacity and energy. Due to delicate medical services provided by these equipment, it is a matter of necessity to scout for sustainable alternative power supply that will guarantee power sufficiency through the application of solar PV for a reliable power delivery

2024-04-22T00:00:00Z Muhammad, Sadiq Ezenwora, Joel Aghagbunam Ibrahim, Aku Godwin Kingsley, Chidozie Igwe http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/29646 2025-05-15T10:38:23Z 2024-01-01T00:00:00Z

Title: A Review on Renewable Energy Power Supply Sources as an Option for Power Generation Authors: Muhammad, Sadiq; Ezenwora, Joel Aghagbunam; Ibrahim, Aku Godwin; Kingsley, Chidozie Igwe Abstract: Education is an essential tool to maintain steady development and strengthen human resources in any country. The development of any nation depends largely on her technical prowess and capabilities. The need for energy to satisfy the country technical training institution for the avoidance of unemployed graduate and unplanned production of irrelevant skilled should be a priority for effective national building as majority of the institution are having unreliable power supply. Implementing renewable energy policy intensely in this institution will aid to achieve the workforce for the purpose of initiating, facilitating and implementing technological development of a nation. The study examined opportunities associated with renewable energy resources and challenges to meet electricity demands in Nigeria technical Institution. The findings revealed that if solar, wind, biomass and small hydro power resources are integrated and fully harnessed it would help to achieve the goal of renewable energy by providing sustainable and reliable power, reduce emission and offer clean energy.

2024-01-01T00:00:00Z Mohammad, Adamu Kingsley, Chidozie Igwe Joel, Aghaegbunam Ezenwora Elijah, Olusayo Olurotimi http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/29528 2025-05-12T17:52:19Z 2025-01-01T00:00:00Z

Title: Assessment of Rain Attenuation for Terrestrial Communication Links in Kaduna State, Nigeria Authors: Mohammad, Adamu; Kingsley, Chidozie Igwe; Joel, Aghaegbunam Ezenwora; Elijah, Olusayo Olurotimi Abstract: Designing satellite and terrestrial communication links requires accurate predictions of rain rate and rain attenuation because rain-fade and its dynamic fluctuations have consistently been detrimental to received signals, especially in tropical regions known to be prone to heavy rainfall. Nigeria's rain is characterized by heavy rainfall, frequent rainfall occurrences and a greater abundance of large raindrops when compared to temperate regions. Research on prediction of rain attenuation has become a necessity in the study area, as the study of rain attenuation prediction in Kaduna State is minimal (if available). Also, research and forecast by NIMET indicated that the northwestern region of Nigeria is expected to face a significant rainfall event in the coming days, which could lead to flooding and hazardous conditions (signal attenuation) that requires preparedness and mitigation efforts by authorities and resident. This study looks into the effect of rain-induced attenuation on microwave and millimeter wave propagation for terrestrial communication links in Kaduna State, Nigeria. 36 years (1986-2022) daily rainfall (mm) data was obtained from the Nigerian Meteorological Agency (NIMET) Abuja. The rainfall accumulation (mm) was converted to 1 minute rain rate (mm/h) using the Chebil rain rate model, while rain attenuation values were computed using the ITU-R P. 530-17 rain attenuation model. The analysis shows that Kaduna State has a rainfall rate of 106.12mm/hr at 0.01% of time exceedance. For the rain attenuation analysis, higher attenuation values were recorded at higher frequencies. At 25 GHz and 20 km path length, values of 103 dB and 127 dB were predicted for vertical and horizontal polarisations respectively, while 165 dB and 188 dB were predicted for vertical and horizontal polarizations respectively at 40 GHz. Hence, the findings show that the attenuation become higher at horizontal polarisation than at vertical polarisation.

2025-01-01T00:00:00Z