Biometric fingerprint images require substantial storage, transmission and computation costs, thus their compression is advantageous to reduce these requirements. This research work presents a novel approach to biometric fingerprint image compression by the innovative application of non-uniform quantization scheme in combination with level-dependen... Continue Reading
The Probabilistic evaluation of horizontally curved aluminium alloy bridge decks on steel I-Girders using AASHTO (2010) specification is presented.The analysis was carried out using ABAQUS and the First Order Reliability Method (FORM). Structural behavior of the horizontally curved aluminium alloy decks on steel girders were studied under varying l... Continue Reading
This research was aimed at the development of an improved artificial fish swarm optimization algorithm based on knowledge (normative and situational) in cultural algorithm and crossover operator called the modified Cultural Artificial Fish Swarm Algorithm with Crossover (mCAFAC). The Normative and Situational knowledge inherent in cultural algorith... Continue Reading
Fuzzy time series (FTS) forecasting is a technique based on time series and fuzzy logic theory developed for the purpose of analysis and prediction of time series events. The proposed Fuzzified Trend Mapping and Identification (FTMI) model uses a Re-Partitioning Discretization (RPD) approach to optimize the partitioning of the interval lengths and ... Continue Reading
In this study, extracts from Ocimumgratissimum(O.G) and Hyptissuaveolens(H.S) leaves were subjected to the following analyses: physicochemical and phytochemical analyses. The medium carbon steel samples were subjected to corrosion inhibition test using gravimetric method, mechanical tests (hardness, tensile, and impact) and surface morphology evalu... Continue Reading
The development and characterization of poly(lactic acid)(PLA)/guineacorn (Sorghum bicolor) husks particulates (GHP) composites as biodegradable or green composites was investigated to serve as an alternative to the conventional polymers which are non-degradable and are used for short term periods before discarding. The GHP was treated with Sodium ... Continue Reading
The effect of cane molasses as quenching medium for high carbon steel was investigated. Samples of high carbon steel were spheroidized annealed and then machined prior to the hardening process. Molasses of eleven different viscosities were prepared by adding varying amounts of water; such that the ratios of molasses to water were 1:1, 2.5:1, 3:1, 3... Continue Reading
This research evaluates the performance of Ti-6Al-4V alloy as a dental implant in simulated saliva +fluoride with varying concentration of bitter leaf (Vernomia amygdalina) extract as inhibitor. Electrochemical corrosion analysis and abrasive wear test were used as criteria to assess the performance of the thermally treated Ti-6Al-4V alloy for dent... Continue Reading
In this work, the characterization and beneficiation of Zurak lead-zinc ore deposit was carried out. The sample of the ore was sourced from Zurak village in Plateau state. The sourced sample was crushed and pulverized using laboratory jaw crusher and pulverizing machines. The pulverized sample was characterized to determine its chemical and mineral... Continue Reading
Traditionally, calcium carbonate is used as a filler in foam industries and studies have shown that egg-shell contains about 94 % calcium carbonate. The effect of egg-shell in flexible polyurethane foam was studied in this work. Foam with no filler was produced as a control. The egg-shell was beneficiated, characterized and used as filler in flexib... Continue Reading
The resistance and susceptibility of austenitic stainless steel (ASS) type 304, exposed to sodium hydroxide (NaOH) and hydrochloric acid (HCl) media (0.5M concentrations) at ambient temperatures was investigated using design expert software 6.0.6 and scanning electron microscope (SEM). The austenitic stainless steel flat bar of 3mm thickness was cu... Continue Reading
This study reports impact of climate change on water resources availability in the Sokoto-Rima river basin (SRRB). SRRB is located in the North Western Nigeria and spread across four (4) States (i.e. Sokoto, Kebbi, Katsina and Zamfara) with ninety three (93) Local Government Areas, with a human population of more than 15million. The study uses Wate... Continue Reading
This study adopts the theory of fluidisation to design a combustor suitable for use in the rural communities of Nigeria. The Combustor, which will use sand particles as bed material, will burn maize cobs supplied at 5kg/h to generate heat energy for thermal applications including steam generation. Like most African countries, lack of adequate elect... Continue Reading
This research centers on the design, development and testing of a motorized juice extractor fabricated using locally-available materials. The machine is made essentially of two basic compartments: the chopping compartment and the juice extracting compartment. Other components include feeding hoppers, top cover, auger conveyor housed in a cylindrica... Continue Reading
This study investigates the prediction of residual stresses developed in shielded metal arc welding of ASTM A36 mild steel platesvia simulation and experiments. The specific objectives were to simulate the shielded manual metal arc welding process by using the finite element method in ANSYS Multiphysics Version 14, to produce experimental samples o... Continue Reading