Engineering

Engineering Research Papers/Topics

Design and Development of a Hybrid Bicycle

This project involved the conversion of a conventional bicycle into an electric hybrid bicycle using a hub motor, battery, controller, throttle, and battery indicator. The selection of a flywheel-based regenerative mechanism was justified based on its superior energy storage capabilities. The challenges faced during the assembly, including bearing and clutch drive iterations, were overcome through the use of multiple bearings, metal casting, and welding. The implementation of an indirect...

Assessment of the Status of Knowledge Sharing Practices,Barriers and Opportunities in Nekemte City Administration, Ethiopia

Abstract Knowledge is a critical organizational resource in public administrations. In order to function effectively and satisfy the citizens‟ ever increasing demand for better services and products, governments should strengthen institutional capacity by making use of available knowledge and striving to create new knowledge to provide efficient services, make fair decision and for solving societal problems at large. Knowledge sharing, which is one of the most important processes of knowled...

Lignocelluloses Modified TiO2 Nanomaterials as Renewable Photocatalyst for Water Splitting

Photocatalytic water splitting process is a hopeful means to solve depletion and environmental pollution problems caused by fossil fuels as well as for sustainable hydrogen production using renewable natural resources like sunlight and biomass (cotton stalk). In this study the aim was to fabricate cotton stalk extracted Lignocellulose (LGO) Titanium oxide (TiO2) nanoparticles via sol-gel in ethanol and to investigate their photocatalytic water splitting activities under Visible light irra...

Surface Roughness and Electrochemical Performance Properties of Biosynthesized α-MnO2/NiO-Based Polyaniline Ternary Composites as Efficient Catalysts in Microbial Fuel Cells

In this study, biosynthesized α-MnO2/NiO NPs and chemically oxidative polyaniline (PANI) were synthesized to form ternary composite anode material for MFC. The synthesized materials were characterized with different materials (UV-Vis, FTIR, XRD, TGA-DTA-DSC, SEM-EDX-Gwyddion, CV, and EIS) to deeply examine their optical, structural, morphological, thermal, roughness, and electrocatalytic properties. As a result, the bioelectrical activity of α-MnO2/NiO/PANI composite-modified PGE was ve...

Biosynthesized α-MnO2 -based polyaniline binary composite as efficient bioanode catalyst for high-performance microbial fuel cell

Microbial fuel cell (MFC) has novel technological advances in simultaneous power generation and wastewater treatment applications. In this study, low-cost biosynthesizedα-MnO2 nanoparticles integration with conducting polyaniline (PANI) matrix to form α-MnO2/PANI hybrid nanocomposite was fabricated by in situ polymerization method. The prepared material was characterized through UV-Vis spectroscopy, XRD, FTIR, TGA-DTA, DSC, SEM, cyclic voltammetry, and impedance spectroscopy. MFC perfor...

Advancements in Bioelectricity Generation Through Nanomaterial-Modified Anode Electrodes in Microbial Fuel Cells

The use of nanotechnology in bioelectrochemical systems to recover bioelectricity and metals from waste appears to be a potentially appealing alternative to existing established procedures. This trend exactly characterizes the current renewable energy production technology. Hence, this review focuses on the improvement of the anode electrode by using different functional metal oxide-conducting polymer nanocomposites to enhance microbial fuel cell (MFC) performance. Enhancement of interfa...

Prototype of Autonomous Vehicles Using Image Processing & Raspberry Pi

ABSTRACT An innovative approach to achieving autonomous vehicle navigation through the integration of image processing techniques and the Raspberry Pi platform. The aim is to develop a self-driving system that can analyze real-time images captured by onboard cameras and make informed decisions based on the detected objects and road conditions. By employing advanced computer vision algorithms, such as object detection and lane detection, the system can identify and tracking obstacles, recogniz...

Gas Flaring in Nigeria: What Can be Done to Curb It by Cynthia Ohaeri

GAS FLARING in Nigeria, the burning of natural gas associated with oil extraction, has been a prevalent practice. Natural gas brought to the surface, especially where there is no infrastructure to put this “associated gas” to productive use is burnt for disposal thus making it a wasteful and generally polluting practice. An economy that promotes carbon emission through flaring wastes valuable energy products, increases health disparities and fuels climate change, a far-cry from the Glob...

Review of the Effects of Standard Deviation on Time and Frequency Response of Gaussian Filter

This research reviews the effects of a standard deviation on time response and frequency response of Gaussian filter. In the research, standard deviations of 0.5, 1, 1.5, 2, 2.5 and 3 were applied to normalized Gaussian filter in time domain and frequency domain. From the result of the simulation, it was observed that in the time domain, the peak amplitude of the filter increased with a decrease in the standard deviation and the execution time decreased with a decrease in standard deviation. ...

Review of the Implications of Uploading Unverified Dataset in A Data Banking Site (Case Study of Kaggle)

This review paper comprehensively detailed the methodologies involved in data analysis and theevaluation steps. It showed that steps and phases are the two main methodological parameters to be considered during data assessment for data of high qualities to be obtained.It is reviewed from this research that poor data quality is always caused by incompleteness, inconsistency, integrity and time-related dimensions and the four major factors that causes error in a dataset are duplication, commuta...

Qualitative Research

Qualitative research is concerned with feelings, ideas, or experiences. Finding insights that can result in testable hypotheses is the main goal of the data collection, which is frequently done in narrative form. During the exploratory phases of a study, educators use qualitative research to find patterns or fresh perspectives. A methodology called qualitative research is created to gather non-numerical data to produce insights. It is not statistical and is either semi-structured or unstructu...

Principals’ Administrative Strategies as Correlates of Teachers’ Job Performance in Public Secondary Schools in Obollo-Afor Education Zone of Enugu State, Nigeria

The study investigated principals’ administrative strategies as correlates of teachers’ job performance in public secondary schools in Obollo-Afor Education Zone of Enugu State. Four research questions and four null hypotheses guided the study. The study adopted a correlational survey design. The population of the study was 1,854 principals and teachers in 48 secondary schools in the Zone. A sample of 605 teachers was drawn using proportionate stratified random sampling technique. Qu...

Path Loss Model Predictions for Different Gsm Networks in the UNN Campus Environment for Estimation of Propagation loss

Different path loss models have been predicted for different locations. Nevertheless, none of these models can be regarded as a superior model, because environmental factors play a vital role in the path loss of every environment. In this paper, signal attenuation prediction models for Global System for Mobile Communication (GSM) networks in the University of Nigeria, Nsukka for four different networks namely Airtel, Globacom, Mobile Telecommunication Network (MTN), and 9mobile networks w...

Optimum Silver contact Sputtering parameters for efficient Perovskite Solar Cell Fabrication

The use of magnetron sputtering for deposition of the metal electrode in perovskite solar cells has been limited because of the damage to the organic hole transport layer by high kinetic energy particles during the sputtering process. In this paper, a systematic investigation into the effect of sputtering power, argon flow rate, sputtering duration, and argon pressure on the performance of the perovskite cells was conducted. The results of this work show that high power conversion efficie...

Novel Passive Negative and Positive Clamper Circuits Design for Electronic Systems

In this paper, models for negative and positive clamper circuits were developed. The models developed were simulated and data collected. Simulation results obtained showed that series capacitance needed to design negative clamper circuit was directly proportional to the duty cycle and period of the input signal. Considering the positive clamper circuit, the series capacitance is inversely proportional to the duty cycle and directly proportional to the period of the input signal. Looking at th...


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