Biological systems usually consist of large number of components and involve processes at a variety of spatial, temporal and biological scales. This study presents a framework for model identification and the use of Global Sensitivity Analysis (GSA) in systems biology modelling and shows how the information content of clinical data from Short Insul... Continue Reading
Public water supply is distributed through water pipe network, which affects the quality of water that gets to the consumers when the integrity of the pipe distribution network is compromised. Hence, this study aimed at investigating and modelling water quality deterioration in the distribution network of Kaduna Metropolis. In order to achieve this... Continue Reading
This research aimed at the development of a modified real-time fault-tolerant task allocation scheme (mRFTAS) for wireless sensor networks (WSNs), using active replication backup techniques. In WSNs, the sensor nodes are at risk of failure and malicious attacks (selective forwarding) and this can have a profoundly negative effect on real-time WSNs.... Continue Reading
The study was conducted during the dry season in 2016 at the Irrigation Research farm of Institute for Agricultural Research, Samaru, Zaria, to determine the effect of deficit irrigation and mulch on yield and water use of Cucumber crop. The experiment consisted of four levels of moisture depletion at 0%, 25%, 50%, and 75% (I100, I75, I50, and I25)... Continue Reading
This dissertation is a report of the investigation carried out on the Probabilistic analysis of reinforced concrete columns subjected to corrosion. Corrosion of reinforcement bars is one of the most significant causes of deterioration of reinforced concrete columns. The deterioration leads to a loss of serviceability, functionality and ultimately a... Continue Reading
Spent primary batteries are known to contain metallic compounds that could be of value if recycled as well as harmful to man and the environment if not properly disposed. Also, the recovery of these value metals from the used batteries can reduce limited natural resource (ore) depletion. This research was carried out to investigate the recovery pot... Continue Reading
The study was conducted on communities along Lamurde floodplain between Latitude 8?52’0” and 8?56’6” and Longitude11?19’0” and 11?22’8”. The study areaoverlain the shallow well fieldswhere public water supply system and main private water vending were extracted to service the entire Jalingo city. Sample points were selected among th... Continue Reading
Carbon Fiber-Reinforced Polymer (CFRP) composite materials have provenvaluable properties and suitability to be used in the construction of new buildings and in upgrading theexisting ones. One of the objectives of this study is to laminate solid timber columns with varying thicknesses of CFRP laminates to check the patterns of the stresses, displac... Continue Reading
This research is aimed at the development of a modified fruit fly optimization algorithm (mFFOA) for the determination of optimized weighting matrices (Q which is a positive definite matrix that penalizes the states and R which is also a positive definite matrix that penalizes the control inputs) of the linear quadratic regulator (LQR) to be used f... Continue Reading
Power system network is designed to operate in a prescribed voltage and frequency for stability and for better power quality. Unexpected contingencies leads to instability related problems in the system. This research develops a sensitivity index based technique with contingency analysis for Unified Power Flow Controller (UPFC) placement for Nigeri... Continue Reading
Deep eutectic solvents (DES) were synthesized from different mole ratios of K2CO3/glycerol at 400 rpm and 353 K for a period of 2 hours toform a homogenous transparent colorless liquid. ThreeDES were successfully formed at the ratio 1:20, 1:30 and 1:40. The DES synthesized were used as catalyst in transesterification reactionof Jatrophacurcasoil wi... Continue Reading
This research was carried out to ascertain the suitability of Osara and Jamata River sand for moulding operation and Ajaokuta Foundry Sand was also tested along with the two sands under the same condition and their moulding properties were compared with that of American Foundrymens’ Society (AFS) Standard. The Jamata River sand sample was collect... Continue Reading
This work presents the design, fabrication and performance evaluation of a multiple sandcrete blocks moulding machine (MSBMM) for simultaneously moulding three of 6 inches sandcrete blocks of size 450 x 150 x 225mm. The machine was designed to operate at speed of 151.8 rad/s, and provided the vibration right through compactor drive shaft (CDS)-ecce... Continue Reading
The search for new engineering materials that addresses ecological and environmental issues is generating renewed interest in utilisation of agricultural wastes to explore value-added application avenues. The aim of the study was to develop and characterise epoxy/borassus palm (Borassus aethiopum Mart.) leaf stalk fibre (BPLSF) reinforced composite... Continue Reading
Polylactide (PLA) is an emerging material mainly because it can be synthesized from renewable resources and is thus environmentally and ecologically safe. It found application in packaging and biomedical. In terms of cost, however, PLA cannot rival the traditional packaging materials. Creative solutions are therefore needed to make PLA a more finan... Continue Reading