ABSTRACT A new simple novel electrochemical sensing platform based onelectrodeposition ofnano zinc oxide ontomultiwalled carbon nanotubes modified glassy carbon electrode was constructed. The modified electrode was characterized by cyclic voltammetry and electrochemical impedance in a redox probe.The electrode surface area after modification was 0.15 cm2, which was twice large that of a bare glassy carbon electrode. The new fabricated sensor was applied for individual and simultaneous determi...
ABSTRACT This research looks at the prison community as a discourse community. The study also provides a sociolinguistic analysis of the language used at Whawha Medium Offenders Prison. Through the analysis of language the study also explores certain aspects of prison life at Whawha prison complex. The study uses the ‘sociolinguistics theory’. The research examines Whawha Prison Complex as a discourse community, investigates how the inmates at Whawha Prison Complex use language in a pecul...
ABSTRACT This report serves to give an account for a research on a Public Transport Inventory Monitoring System for Developing Countries. The research is based on the current situation in Zimbabwe where the public transport industry is dominated by the informal sector. In this document there is a discussion of the transport industry in Zimbabwe, identification of the problem of accountability of inventory in the current industry, a methodology to help solve the problem and the results of usin...
ABSTRACT The research focused into the impact of Information and Communication Technology (ICT) based technologies in the teaching and learning at Early Childhood Education (ECE) level settings in the context of the new curriculum in Bulawayo Urban schools. The study was conducted at Riverside Stimulation Centre in Imbizo District in Bulawayo Metropolitan Province. Ten ECE teachers formed the sample. Questionnaires were used to gather information from teachers. Focus groups interviews were us...
ABSTRACT The kinetic analysis of three complex reaction networks of catalytic reforming reaction systems has been studied. The complex systems of reaction networks were first fashioned into a system of single reactions. Each single reaction is then delineated into a sequence of elementary reaction steps. The principles of rate determining step, steady state approximations and microscopic reversibility were then involved for necessary simplifications Kinetic and equilibrium parameters for mode...
ABSTRACT An electrochemical sensor based on polyaniline cobalt phtahlocyanito doped with cobalt oxide nanoparticles was developed for the electrocatalytic oxidation of amitrole.FTIR, Electrochemical impedance spectroscopy (EIS) and Bode plots were used in the characterization of the synthesized modifiers CoTCPc, PANI, Co2O3NPs and to ascertain the chemical linkage between CoTCPc and PANI while cyclic voltammetry, linear sweep, chronoamperometry and differential pulse voltammetry were used to ...
ABSTRACT This work improves upon the Potential Field Method (PFM) for the navigation of autonomous mobile robots, through the introduction of a new Hybrid Virtual Force Field (HVFF) concept. The HVFF concept integrates the virtual force field (VFF), which is based on the principles of artificial attractive and repulsive potentials, with the virtual obstacle concept (VOC) and the virtual goal concept (VGC). In particular, the specific challenges resolved by the HVFF include the local minimal p...
ABSTRACT Two Dimensional Laminar Free Convection in a fluid contained in a long horizontal right triangular enclosure has been investigated using numerical techniques and an experimental study. The geometry of the enclosure is such that the base is assumed horizontal while the vertical height is adiabatic. Motion in the region is set up by heating the hypotenuse while cooling the horizontal wall. This model simulates heat transfer problems associated with pitched-roofs with suspended ceilings...
Abstract In Zimbabwe television (ZTV) transmission coverage is approximately 55% nationwide and is mainly confined to urban areas. The dissertation overviews activities of the author’s design of a solar tv transmitter prototype which will act as gap filler in remote areas where there is no television coverage. Due to recent progress in the field of Wireless Sensor Networks (WSN) in industry particularly for control and data processing, the same goal can be achieved in television broadcastin...
ABSTRACT The internet has become a key resource at Midlands State University for research and communication. The institution is also experiencing high students‟ population which in turn has led to more demand for bandwidth. The high students‟ population makes the overall available bandwidth shrink leading to slow internet connection making internet an ineffective academic resource. The institution has been responding to slow internet connection by buying more bandwidth which is so unecono...
ABSTRACT An electrochemical sensor based on nickel tetraamine phthalocyanine and nitrogen doped grapheme oxide (NITAPC-NDGONS (mix)) nanoparticles was developed for the simultaneous electrocatalytic oxidation of vanillin and ascorbic acid. FTIR (Fourier Transimition Infrared), electrochemical impedance spectroscopy (EIS) and Bode plots were used in the characterization of the synthesized modifiers (NITAPC), (GONS-NITAPC) and NITAPC-NDGONS (mix)). Cyclic voltammetry, linear sweep, chronoampero...
ABSTRACT Azo dyes have become an immerging and difficult pollutant to the environment. Industrial activities have resulted in disposal of these toxic dyes in effluent and among them is methyl orange (MO) dye. Proper effluent treatment schemes have become a necessity so as to be able to reduce the potential toxicity issues regarding plant and animal life due to the rise in demand for clean and safe water. Several methods have been applied for the removal and degradation of MO dye but have prov...
ABSTRACT Monitoring is very important in Industrial Automation to bring out reliability and accuracy thus the use of a SCADA system. SCADA is an acronym for “Supervisory Control and Data Acquisition.” This systems are widely used in industry for supervisory control and data acquisition of industrial processes. A Android-enabled mobile phone can be used as a client in a SCADA application in order to display and supervise an industrial refrigeration system. The project presents an actual im...
ABSTRACT Carbon nanodots (CNDs), nitrogen doped carbon nanodots (n-CNDs) and their composites with cobalt tetra aminophenoxy phthalocyanine nanoparticles (CoTAPhPcNPs) were employed towards the simultaneous detection of aspirin (ASA), ibuprofen (IBU) and indomethacin (INDO). The nanomaterials were characterized by FTIR, UV-Vis, TEM, cyclic voltammetry, electrochemical impedance spectroscopy, linear sweep voltammetry, chronoamperometry and differential pulse voltammetry. CoTAPhPcNPs/n-CNDs-GCE...
Abstract The study assessed the challenges faced by students in using Information Communication Technology (ICT) at primary level. The research was carried out in Cluster five of Glenview Mufakose District in Harare. In order to get an insight on the challenges, different authorities were reviewed. The descriptive survey design was adopted in this study. Probability and non-probability sampling techniques were employed in order to select participants in this research. Five teachers, twenty pu...