Ramizi Mohamed
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View article: Eco-friendly desalination: improving evaporation rates in a solar still using agricultural waste materials
Eco-friendly desalination: improving evaporation rates in a solar still using agricultural waste materials Open
Access to clean drinking water remains a critical global challenge, particularly in remote areas with limited infrastructure. Solar stills offer a sustainable solution by utilizing solar energy to purify contaminated water through evaporat…
View article: Partial Differential Solutions with Lumped Parameter Model for Single Phase Transformer Windings Voltage Distribution
Partial Differential Solutions with Lumped Parameter Model for Single Phase Transformer Windings Voltage Distribution Open
A high voltage transformer is one of the most critical components in power systems, responsible for regulating voltage levels and ensuring stable power delivery. Its main structure comprises the transformer core, voltage windings, insulati…
View article: Enhanced Flywheel Energy Storage Using Speed-Controlled Dual Drives and Star-Delta Switching
Enhanced Flywheel Energy Storage Using Speed-Controlled Dual Drives and Star-Delta Switching Open
Flywheel Energy Storage System (FESS) plays a crucial role in enhancing power quality in renewable energy systems, particularly in isolated micro-grids. However, challenges such as power supply consistency, lack of inertia from power elect…
View article: Characterization of Thermoelectric Generators for Voltage Control Circuits in Low Power Electronic Devices
Characterization of Thermoelectric Generators for Voltage Control Circuits in Low Power Electronic Devices Open
This research explores the characterization and development of a circuit capable of powering low-power electronic devices using thermoelectric generators (TEG). As global interest in renewable energy sources grows, alternatives such as hyd…
View article: Introducing a Standardized Clinical Investigation Sheet for Medical Documentation at Dongola Specialized Hospital, Sudan: A Quality Improvement Project
Introducing a Standardized Clinical Investigation Sheet for Medical Documentation at Dongola Specialized Hospital, Sudan: A Quality Improvement Project Open
Inconsistent and incomplete documentation of investigation results at Dongola Specialized Hospital in Sudan has compromised patient safety and clinical efficiency. To address this, a two-cycle quality improvement project was conducted betw…
View article: Prevalence and Patterns of Skin Diseases among School Children in Egypt: A National Cross-sectional Study
Prevalence and Patterns of Skin Diseases among School Children in Egypt: A National Cross-sectional Study Open
View article: An enhanced multi-objective reactive power dispatch for hybrid Wind-Solar power system using Archimedes optimization algorithm
An enhanced multi-objective reactive power dispatch for hybrid Wind-Solar power system using Archimedes optimization algorithm Open
Optimal reactive power dispatch (ORPD) is essential for addressing power system challenges related to distributed generation (DG), particularly from renewable energy (RE) sources such as wind and solar. The intermittent nature and uncertai…
View article: The outcomes of hybrid virtual consultation for a smoking cessation program in Klang Valley, Malaysia
The outcomes of hybrid virtual consultation for a smoking cessation program in Klang Valley, Malaysia Open
Hybrid virtual consultation was more effective, as evidenced by higher smoking cessation at week 7 (1-month post-quit date) and CAR from week 7 to week 24 compared to the face-to-face group. Telemedicine or teleconsultation should be easil…
View article: Design of Piezoelectric Energy Harvester Single Cantilever Beam for IoT applications and Micro-electronic devices
Design of Piezoelectric Energy Harvester Single Cantilever Beam for IoT applications and Micro-electronic devices Open
A few years back the power requirement of electronic devices was very high. But with the technological developments in the field of internet-based systems, the design of low-powered microelectronic devices, WSN and IoT devices became neces…
View article: Dietary habits and weight change during the second wave of the COVID-19 pandemic among the Egyptian population
Dietary habits and weight change during the second wave of the COVID-19 pandemic among the Egyptian population Open
View article: Evaluating and Improving the Quality of the Follow-Up Checklist at Dongola Specialised Hospital: A Clinical Audit
Evaluating and Improving the Quality of the Follow-Up Checklist at Dongola Specialised Hospital: A Clinical Audit Open
View article: Accelerated Heating Paper Pressboard and Transformer Oil for Transformer Aging Assessment
Accelerated Heating Paper Pressboard and Transformer Oil for Transformer Aging Assessment Open
Paper pressboard is one of the main insulating elements that need to be investigated in order to identify the life span of high voltage transformer. In actual condition, the pressboard insulation is sealed in an enclosed metal container an…
View article: Winding Response under Difference Effective Inductance for Single Phase High Voltage Transformer
Winding Response under Difference Effective Inductance for Single Phase High Voltage Transformer Open
Early studies of transformer winding parameters were focused on the determination via its physical dimensions and empirical formulas. In most cases it is divided into several parts namely coil section pairs, coils distance, disc coils diam…
View article: Design of Fast Intelligence Hybrid Fuzzy Logic and Improved Incremental Conductance Based MPPT Technique
Design of Fast Intelligence Hybrid Fuzzy Logic and Improved Incremental Conductance Based MPPT Technique Open
Presently, there has been a significant growth in the solar PV technology due to various factors such as clean technology, zero carbon emission and low maintenance. However, it becomes significant to extract the power in abundance from sol…
View article: Development and Analysis of Vibrational Based Piezoelectric Micro Energy Harvester for Wsn Sensor Node Capturing Abundant Vibration of Suspension Bridge
Development and Analysis of Vibrational Based Piezoelectric Micro Energy Harvester for Wsn Sensor Node Capturing Abundant Vibration of Suspension Bridge Open
View article: Design of Improved Incremental Conductance with Fast Intelligent (FI) Based MPPT Technique for Solar PV System
Design of Improved Incremental Conductance with Fast Intelligent (FI) Based MPPT Technique for Solar PV System Open
Currently, the solar PV power extraction technology is undergoing significant improvement. Towards this, the paper proposed the design for a photovoltaic (PV) array and the output performance of a photovoltaic system under the influence of…
View article: Real-Time Monitoring of Oil Temperature in Distribution Power Transformer by Using Internet of Things
Real-Time Monitoring of Oil Temperature in Distribution Power Transformer by Using Internet of Things Open
In Malaysia, on-site technical personnel manually inspect power transformers. Some vital condition indicators, such as oil and winding temperatures, are not monitored in real-time. This condition can be hazardous if the transformer gets ov…
View article: Investigation of temperature gradient between ambient air and soil to power up wireless sensor network device using a thermoelectric generator
Investigation of temperature gradient between ambient air and soil to power up wireless sensor network device using a thermoelectric generator Open
This paper proposes a study of an energy harvesting system for powering wireless sensor network (WSN) devices. The thermal energy harvesting system used is based on the thermal energy source between ambient air at the soil surface with fiv…
View article: An Overview of the Strategies for Tin Selenide Advancement in Thermoelectric Application
An Overview of the Strategies for Tin Selenide Advancement in Thermoelectric Application Open
Chalcogenide, tin selenide-based thermoelectric (TE) materials are Earth-abundant, non-toxic, and are proven to be highly stable intrinsically with ultralow thermal conductivity. This work presented an updated review regarding the extraord…
View article: Artificial Neural Networks Based Optimization Techniques: A Review
Artificial Neural Networks Based Optimization Techniques: A Review Open
In the last few years, intensive research has been done to enhance artificial intelligence (AI) using optimization techniques. In this paper, we present an extensive review of artificial neural networks (ANNs) based optimization algorithm …
View article: Review on Comparison of Different Energy Storage Technologies Used in Micro-Energy Harvesting, WSNs, Low-Cost Microelectronic Devices: Challenges and Recommendations
Review on Comparison of Different Energy Storage Technologies Used in Micro-Energy Harvesting, WSNs, Low-Cost Microelectronic Devices: Challenges and Recommendations Open
This paper reviews energy storage systems, in general, and for specific applications in low-cost micro-energy harvesting (MEH) systems, low-cost microelectronic devices, and wireless sensor networks (WSNs). With the development of electron…
View article: A Hybrid Optimization Approach for the Enhancement of Efficiency of a Piezoelectric Energy Harvesting System
A Hybrid Optimization Approach for the Enhancement of Efficiency of a Piezoelectric Energy Harvesting System Open
This paper presents a hybrid optimization approach for the enhancement of performance of a piezoelectric energy harvesting system (PEHS). The existing PEHS shows substantial power loss during hardware implementation. To overcome the proble…
View article: S-E-I-R model solution for malaysia covid-19 pandemic projection
S-E-I-R model solution for malaysia covid-19 pandemic projection Open
Since the COVID-19 pandemic started at the end of December 2019, Malaysia has experienced their worst nightmare of the first wave trajectory, and now evolving in the second wave pandemic to have even worst scenario with higher fatality rat…
View article: Fabrication and Microelectronic Properties of Hybrid Organic–Inorganic (poly(9,9, dioctylfluorene)/p-Si) Heterojunction for Electronic Applications
Fabrication and Microelectronic Properties of Hybrid Organic–Inorganic (poly(9,9, dioctylfluorene)/p-Si) Heterojunction for Electronic Applications Open
We report on the microelectronic characteristics of a novel hybrid heterojunction device based on a solution processable semiconducting polymer poly(9,9-dioctylfluorenyl-2,7-diyl)- co-(N,N0-diphenyl)-N,N′di(p-butyl-oxy-pheyl)-1,4-diamino-b…
View article: Modelling and Simulation of the Performance Analysis for Peltier Module and Seebeck Module using MATLAB/Simulink
Modelling and Simulation of the Performance Analysis for Peltier Module and Seebeck Module using MATLAB/Simulink Open
Currently, the technologies used in power generation are not fully optimised and inefficient. The waste energy produced from the machines, systems and the infrastructure have created interest in energy harvesting researches especially the …
View article: Energy Harvesting from Piezoelectric Cantilever Beam with Different Shapes
Energy Harvesting from Piezoelectric Cantilever Beam with Different Shapes Open
This paper reviews the piezoelectric energy harvesting from mechanical vibration. The recent development in the microelectronic devices and wireless sensor networks (WSNs) requires continuous power source for better performance. Many resea…
View article: Optimal placement of grid-connected photovoltaic generators in a power system for voltage stability enhancement
Optimal placement of grid-connected photovoltaic generators in a power system for voltage stability enhancement Open
The high penetration of photovoltaic (PV) generation can cause many technical issues such as power quality and impact on the power system voltage stability. To improve voltage stability and reducing power loss in a power system with PV gen…
View article: dSPACE Controller-Based Enhanced Piezoelectric Energy Harvesting System Using PI-Lightning Search Algorithm
dSPACE Controller-Based Enhanced Piezoelectric Energy Harvesting System Using PI-Lightning Search Algorithm Open
This paper presents a new lightning search algorithm (LSA) to enhance the piezoelectric energy harvesting system converter (PEHSC) using the dSPACE DS1104 controller board as the proportional-integral voltage controller (PIVC). To extract …
View article: Pengawasan beban tak mengganggu menggunakan mesin penyokong vektor
Pengawasan beban tak mengganggu menggunakan mesin penyokong vektor Open
Kertas kerja ini membentangkan pembangunan pengawasan beban tak mengganggu (PBTM) untuk mengenal pasti beban dengan menggunakan pengelasan mesin penyokong vektor berbilang (MPVB). Suatu kaedah pengawasan beban diselia dilaksanakan untuk me…
View article: Modelling of a Low Frequency Based Rectangular Shape Piezoelectric Cantilever Beam for Energy Harvesting Applications
Modelling of a Low Frequency Based Rectangular Shape Piezoelectric Cantilever Beam for Energy Harvesting Applications Open
Harvesting few amount of charge from environmental ambient sources namely, wind, thermal, heat, vibration, solar utilizing micro scale energy harvesting devices, offers vast view of powering for numerous portable low power electronic devic…