http://repository.fuoye.edu.ng:80/handle/123456789/115 2026-04-16T10:19:34Z http://repository.fuoye.edu.ng:80/handle/123456789/1332 Title: COMPARISON OF CALCULATED WORK FUNCTION OF ELEMENTS EXPRESSED IN TERM OF FERMI ENERGY AND DENSITY OF FREE ELECTRON WITH OTHER METHODS Authors: ADEBAYO SAMUEL, FADAHUNSI; Olubosede, O. Dr. Abstract: The purpose of this project is to derive an expression for work function expressed in terms of Fermi energy and electron density parameter. This approach is referred to as the Metallic Plasma Model. After calculating the work function of metals using this approach, the result gotten are then analyzed and compared to the experimental values of work function for these metals. Also, the results gotten from this approach for each metal is compared to that which was gotten using other approaches such as SJM- Simple Jellium Model and Ab- initio method. 2015-09-01T00:00:00Z http://repository.fuoye.edu.ng:80/handle/123456789/1296 Title: CONSTRUCTION OF A 2KVA MODIFIED SINE WAVE INVERTER WITH AN IN-BUILT CHARGE CONTROLLER Authors: FAGITE, OLUWATOYIN OLUWAKEMI Abstract: The purpose of this project is to design and construct a 1600W (2kVA), 220V inverter at a frequency of 50Hz. This device is constructed with locally sourced materials of regulated standards. The basic principle of its operation is a simple conversion of 12V Direct Current (DC) from a battery using semiconductors at a frequency of 50Hz, to a 220V Alternating Current (AC) across the windings of a transformer. An additional power supply to the public power supply having the same power output is thus provided at an affordable price. This project is based on the design of 2kVA (1.6 kW) inverter system and incorporate the use of switching scheme automatic voltage regulator. The inverter is set to shut-down if the threshold voltage of 11.5V (Min.) is reached and more 13.5V (Max.) during the charging. The switch mode of a modified wave-switching scheme uses an astablemultivibrator to switch on the semiconductor switches-Metal Oxide Semiconductor Field Effect Transistor (MOSFET). 2015-10-01T00:00:00Z http://repository.fuoye.edu.ng:80/handle/123456789/1127 Title: A RADIOMETRIC MAPPING OF FEDERAL UNIVERSITY OYE - EKITI MAIN CAMPUS, SOUTHWESTERN NIGERIA Authors: ADEJUGBAGBE, TAIWO Abstract: The radiometric mapping of Federal University Oye-Ekiti Main Campus along Are-Afao Locality was carried out in this study. For this purpose, measurement of the radiation levels were done along 11 major traverses covering the entire developed area of the Campus. The measurement were carried out by means of a very sensitive portable DSM- 500 Geiger Mueller Survey Meter, with serial number 10005. The results obtained showed that the global average of radiation level for Federal University Oye-Ekiti Main Campus was 0.055µSv/hr translating to an annual dose rate of 0.482mSv/yr which falls below the world average dose limit of 2.4mSv/yr for environmental background radiation as reported by UNSCEAR, ICRP ( 2015-10-01T00:00:00Z