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This paper presents a 900 MHz to 1.5 GHz Single-ended CMOS Mixer for wireless communications systems. The Mixer was designed with Keysight Advanced Design System (ADS) Software based on BSIM_3 model nMOS and pMOS field effect transistors biased with drain supp…

Urban drainage systems in growing cities tend to experience capacity deficiencies and intensified runoff in the face of a changing climate. The resilience of urban drainage corridors in Asaba, Delta State, Nigeria, was investigated through scenario-based hydro…

The rapid growth of wireless systems has increased spectrum demand, making radio resources increasingly scarce. Cognitive Radio (CR) provides a solution by enabling secondary users (SUs) to share spectrum with licensed primary users (PUs) while limiting harmfu…

The growing complexity of medical devices in healthcare facilities requires effective hazard assessment methods to improve patient safety, equipment reliability, and healthcare delivery. This study developed a Fuzzy Logic-Based Hazard Assessment of Medical Dev…

Rapid consumption of fossil fuels coupled with rising environmental deterioration caused by high CO2 emissions has increased the search for clean and renewable energy sources. Vegetable oils are a main possible alternative to fossil fuel. This present work foc…

Legumes are inexpensive sources of protein, vitamins, fiber, complex carbohydrates and essential minerals, and occupy a special place in human diet, particularly in developing countries. However, their nutritional quality is adversely affected by the presence …

Modern power systems are increasingly exposed to more changing loads and nonlinear operating conditions, which can affect the performance of conventional power factor correction systems. This study presents an enhancement of an adaptive power factor correction…

Fire incidents remain a critical safety challenge in residential, industrial, and commercial environments due to delayed detection and limited immediate response capabilities of conventional systems. This study presents the design and implementation of a smart…

Small tropical streams used for community water supply experience simultaneous dilution, sediment mobilisation and oxygen-balance responses during seasonal transitions. This study quantified dry- and wet-season hydrodynamic and physicochemical variation along …

Faults in three-phase power transmission systems threaten system stability, equipment integrity, and power supply reliability. This study presents an integrated framework for fault detection, localization, and clearing using time-domain voltage and current sig…

This paper presents a protection methodology for distributed generation (DG) with respect to transient instability, using the Enugu distribution network as a case study. A detailed ETAP model of the network was developed, incorporating an integrated microgrid …

Gas leakage detection system is very important in preventing accident in both domestic and industrial environment to ensure the safety of personnel and equipment. The effectiveness of this system depends on the performance and type of Gas sensors used which is…

Hexavalent chromium [Cr(VI)] in industrial wastewater requires treatment methods that are efficient, affordable and adaptable to resource-constrained settings. This study compared nitric-acid-modified and non-modified rice husk in a 29-run response surface des…

The growing demand for ubiquitous connectivity and new services in communication technology comes with an undesired consequence of increasing energy consumption. The nodes are the main components of a wireless sensor network WSN infrastructure and contributes …

The growing need for intelligent energy monitoring systems in both residential and industrial settings has driven the advancement of smart metering technologies. This study presented the development and evaluation of a cost-effective, IoT-enabled energy meteri…

This study was carried out to investigate the near-field method of wireless power transmission using inductive coupling. The problem addressed was the limitations of traditional wired power transmission systems, which reduce device mobility, introduce safety h…

Accurate thermal regulation in industrial systems is often challenged by limited sensing coverage and dynamic operating conditions. This study proposes a Digital Twin-driven Adaptive Multi-Point Heat Variation Tracking and Predictive Control System using Edge …

The teaching of analog electronics often suffers from limited hands-on exposure and inadequate instructional tools, which can hinder students’ understanding of fundamental operational amplifier concepts. The design, implementation and performance evaluation of…

Multicarrier communication systems, especially Orthogonal Frequency Division Multiplexing (OFDM), face challenges when it comes to performance, particularly due to high Peak-to-Average Power Ratio (PAPR). This issue can push power amplifiers into nonlinear ter…

The type and quality of fine aggregates significantly affect the strength and durability of concrete. Although river sand has been the preferred choice due to its smooth texture and consistent grading, its dwindling availability and associated environmental is…