* Synthesis of Silicon-rich-silica from local river sand using a low-cost process
* Enhancement of seed germination and seedling growth parameters by priming Maize seed with Silicon-rich-silica.
This paper embodies a novel Pulse Width Modulation (PWM) strategy with an advanced closed-loop control technique for grid-connected three-level Neutral Point Clamped (NPC) converters. The proposed method efficiently adjusts the power factor to meet grid demands, supporting unity, lagging, or leading power factors. It achieves significant reductions in voltage and current Total Harmonic Distortion (THD), with voltage THD at 20.92% and current THD at 1.64%, both complying with the Institute of Electrical and Electronics Engineers (IEEE)-519 standard. These improvements are due to modifications in the modulating signal and carrier waveform. The method also demonstrates stable THD performance across varying switching frequencies and modulation indices. Simulation results validate the proposed approach, showing better THD performance than conventional PWM techniques such as Sinusoidal PWM (SPWM), Third Harmonic PWM (THPWM), Triangular PWM (TRPWM), and Bus-Clamping PWM (BCPWM). This work demonstrates the potential of the proposed method to enhance the performance of NPC converters in grid-connected systems, ensuring improved power quality and robust control.
Incorporating a dynamic energy routing system on a light electric vehicle using TAB converter and efficient utilization of solar and electrical energy which will help reduce grid dependence and lower emissions, contributing to sustainable transportation.
Design, developement,deployment , and evaluation of a Lightweight Image Classification Model for Resource-Constrained Environments Based on Enhanced MobileNet
This study offers a novel, physician-centered analysis of the adoption and integration of AI-enabled robotic systems for vital sign monitoring, identifying nine interrelated enablers and barriers. By combining thematic insights from interviews with recent literature, it advances understanding of both the technical and organizational factors influencing successful deployment, providing a practical framework to guide healthcare institutions in overcoming adoption challenges.
The main objective of this research was to study the proposed measures, which include using electric buses instead of diesel buses and installing photovoltaic systems in the available area of the bus station. The Jordan Valley’s new bus station in Irbid was used as a case study. Two scenarios for switching to electric buses were studied. The first was to convert the currently operating diesel buses to electric buses, and the second was to use new electric buses to replace the old buses. After that, a proposal was made to build a partial photovoltaic system covering the available space in the bus station.
This study aimed to perform a comprehensive evaluation of the life cycle assessment for a current 500MW oil shale power plant installed in the south of Jordan, compared to a proposed PV power plant with the same production capacity. The study was performed using Open LCA software and based on the Ecoinvent 3.7 database. The PV power plant was divided into 5 identical substations, each one has 500MW power capacity with 2.5 GW in total. The design was carried out through specialized software, which showed that each substation could generate 1027108 MWh annually. The LCA study was performed to find the environmental impact for five categories: climate change, ozone depletion, fossil depletion, human toxicity, and particulate matter formation.
The significant research contribution of this conference paper lies in its development of a high-resolution, sector-integrated geospatial electrification planning.
Key contributions include:
1) Multi-sector Demand Integration: Unlike many prior geospatial studies that focus only on household electricity demand, this study integrates electricity demand from health and education facilities, enabling more realistic and inclusive planning.
2) Use of High-Resolution Spatial Data: By employing fine-grained population data (e.g., HRSL) and georeferenced infrastructure/facilities, the study increases the accuracy of least-cost technology selection across diverse terrains and settlement types.
3) Scenario-Based Planning: It evaluates electrification pathways under low, medium, and high demand scenarios, accounting for future consumption growth, and identifies how technology preferences shift with changing demand levels.
Overall, the paper contributes to a policy-relevant framework for achieving universal electricity access in challenging geographies, with implications for similar contexts across Sub-Saharan Africa.
This study makes a significant contribution by quantitatively demonstrating the critical impact of incorporating hourly solar radiation, temperature, and electricity demand data into MG sizing, revealing substantial implications for system capacity and cost metrics in tropical rural communities. The findings show that neglecting hourly temperature variations leads to a considerable underestimation of the required PV and battery capacities, alongside a dramatic increase in the Levelized Cost of Electricity (LCOE) and Net Present Cost (NPC). Specifically, the analysis across three Mozambican communities indicates that accounting for temperature necessitates an increase in PV capacity ranging from 74% to 114% and battery storage from 85% to 122%. This translates directly into a significant increase in project costs, with LCOE increasing by 116% to 165% and NPC by 116% to 147%. These percentage increases are not minor adjustments but rather highlight a fundamental oversight in mini-grid sizing methodologies that do not account for temperature effects.
This study makes a pioneering contribution by conducting the first comprehensive investigation of the lead-free perovskite compound K3TlBr6 for high-efficiency solar cell applications. It integrates first-principles Density Functional Theory (DFT) and device-level SCAPS-1D simulations to assess the material’s electronic, mechanical, optical, and photovoltaic properties. Key findings reveal that K₃TlBr₆ exhibits a direct band gap, mechanical flexibility, strong UV-visible light absorption, and robust thermal and defect tolerance. The optimized device configuration achieves a power conversion efficiency (PCE) of 22.61%, confirming its viability as an eco-friendly, stable absorber layer for next-generation solar cells. This work bridges the gap between material properties and device performance, offering a valuable framework for future experimental development of K3TlBr6-based photovoltaics.