Over the years, the decline of Nigeria’s health-care infrastructure has become alarming. The 2018 annual report of WHO shows that 75% human cardiovascular disease resulted from High Blood pressure. Immediate technical action is needed to alleviate the severity to the barest minimum. This research work presents a designs and implementation of microcontroller based Heart Beat Monitoring System for High Blood Pressure Patients. The developed system consists of three sections which include; Input section consisting of Heart beat sensor that senses and converts the blood pulse from a fingertip into an electrical signal. The sensor thereafter sends the signal into microcontroller, which is the control section that acts and communicates the result through LCD and output section. The displayed results show the beat rate in unit of beat per minute (BPM). The developed system was evaluated and demonstrated with two other standard devices namely: Pulse Oximeter and Digital Arm Cuff using a one-way analysis of variance (ANOVA) to determine its level of significance. The P Value of 0.519049 was found significant at 0.05 level of significance. Additionally, the results indicate that there is no significant difference among the three devices. It was concluded the designed device is more cost effective, user friendly and easily assembled due availability of needed materials in contrast with the other standard devices.

The use of solar energy is widespread due to increase in its demand across the world. This is because this form of energy can supply steady, stable, regular and clean energy. Evaluation of  PV (photovoltaic) model with maximum power point tracking (MPPT) using matlab/simulink cell model for estimating the I-V characteristic curves of photovoltaic panel with respect to changes on environmental parameters (temperature and irradiance) and cell parameters (parasitic resistance and ideality factor) were evaluated. The PV model equations were modelled and simulated using MATLAB/SIMULINK Approach. This paper confirmed the usefulness of MATLAB/SIMULINK in the development of MPPT (maximum power point tracking) algorithm. Using a Shockley diode equation, an accurate simulink PV panel model was developed. It was concluded that the MPPT is able to achieve maximum power output when there is variation in solar irradiance.

Introduction: Relevancies of electrical power system to consumers cannot be overemphasized. This requires healthy operation of such system. 132/33KV network is an important network within the transmission system and its importance calls for effective and efficient operation. However, due to the long distance at which the transmission line span, the nature of the lay (either overhead or underground) and type of cable used, there are series of voltage instability and power loss along the transmission network which are threat both economically and technically to both electricity providers and consumers because of the cost implication of the losses and effect on the stability of the network. Aims: This research aims is to seek optimal placement of a capacitor bank to proffer solution to both voltage instability and power loss problem by simulating Ondo 132/33KV transmission network using NEPLAN software. Methodology: The network model was developed using NEPLAN software. The voltage profile and power loss with and without capacitor bank were determined from power load flow solutions using Newton-Raphson method. Results: Effects of optimal placements of capacitors along the studied transmission line is established. Conclusion: Proper installation of capacitor bank is also found to enhance performance with an accompanied improvement in voltage profile along the buses.