Efficient speed regulation in mechanical systems under varying load conditions remains critical to achieving stability, efficiency, and operational safety. This research focuses on the design, development, and performance evaluation of an advanced governor control apparatus aimed at overcoming limitations inherent in conventional systems, including... Continue Reading
This thesis is focused on the synthesis of faujasite type NaY zeolite from both Kankara and Elefun kaolinite clays. The raw kaolins were subjected to various treatments, for the purpose of upgrading them and making them useable as an active monomer for zeolite synthesis. The kaolins were beneficiated using wet method, calcined at various temperatur... Continue Reading
Variations in the average daily windspeed, temperature and atmospheric pressure records in Ikeja and Kaduna were investigated using time series analytical technique. Results of the harmonic analysis for windspeed showed that the periodic v a r i a t i o ns accounted for 40% of the total variance while the f i r s t , second and third harmonics were... Continue Reading
Occurrence of economic quantities of gold deposits over a large expanse of area and in finely disseminated form has been reported in Ilesha (Western Nigeria). The problem, however, has been inavailabity of appropriate technology for efficient recovery of gold. This is the thrust of this work. This investigation, process design for Igun ore deposit ... Continue Reading
One of the most important requirements to be addressed by a general purpose Fault Management (FM) system is the ability to quickly identify the root cause of network errors and fix them as soon as possible. This informs the maintenance of an accurate model of the mobile network error logs for the FM task and the faults dynamic feature trend/statist... Continue Reading
Properties of recycled acrylonitrile-butadiene-styrene (ABS) from different brands of discarded refrigerators were investigated in this work. Solvent extraction method was adopted at room temperature. Three different solvents benzene, toluene and tetrahydrofuran were screened for the dissolution of the ABS. Tetrahydrofuran (THF) was found to be the... Continue Reading
This research investigated the effects of greater ground conductivity and increased foliage on mobile networks. The wet season is known to be characterised by greater ground conductivity and increased foliage due to the increased moisture content. Global System for Mobile Communications (GSM) signal strength measurements of two networks were taken ... Continue Reading
This work presents the reliability assessment of the Power sub-system of the North West Region of Airtel network for a period of one year. The Power model was found to be an integrated setup of major Power subcomponents such as transformer, automatic voltage regulator, generators, rectifier system, battery bank, and Power control systems such as au... Continue Reading
The influence of two plant extracts, Parkia biglobosa (African locust bean) and Vitex doniana (Black plum) on electrochemical corrosion behaviour of as-cast AA2024 aluminium alloy exposed to artificial sea water (3.5%NaCl solution) was investigated. The results of the 1H NMR-based metabolomics of leave extracts of Parkia biglobosa (PBE) and Vitex d... Continue Reading
This work investigated the viability of using locally available vegetable seed oils to produce biodiesel. Two indigenous seeds- Hibiscus Surattensis (Hausa-rahma) and Hibiscus Sabdariffa (Hausa-yakwua) were used to carry out the research. Biodiesel from oils derived from these seeds were produced by alkali catalyzed transesterification process. The... Continue Reading
The kinetic of the production of glucose from pineapple using Aspergillus niger species isolated from fresh groundnut seed has been investigated. Soluble sugar was extracted from the pineapple peel, the peel was then dilignified and subsequently enzymatic hydrolysis of the polysaccharides to glucose was conducted. Effect of the operational paramete... Continue Reading
This research entitled Characterization of Reinforcing Steel Bars in The Nigerian Construction Industry was undertaken to find out the physical and chemical properties of the reinforcing steel bars used in the Nigerian Construction Industry. The study investigated the tensile, bending and chemical composition parameters of the steel bars in relatio... Continue Reading
The possibility of establishing an equation for estimating soil loss in Samaru - Zaria environment was investigated using measured values and two erosion computer models. Three experimental plots were established namely: bare soil, vegetated soil and cultivated soil to measure soil detachment, soil loss and runoff on a storm by storm basis at Ahmad... Continue Reading
This research work reports a general concept in liquid phase oxidative catalysis which combined the advantages of homogeneous and heterogeneous catalysis, by the use of a resin immobilized molybdenum catalyst. The immobilized molybdenum catalyst is prepared by a sorption process, whereby the molybdenum ions are anchored on the active sites of a pol... Continue Reading
The state space is applied in the design of Magnetic Suspension System, where a controller is designed with the aim of making the system stable and providing the performance specifications of settling time less than or equal to 0.5 secs, Maximum overshot less than or equal to 5 percent and Steady State error less or equal to 1 percent. A reference ... Continue Reading