Divine Senanu Ametefe

This perspective reframes hydrogen‐ and biomass‐based hybrid energy storage as a battery‐dominant architecture for grid integration and transportation electrification. The proposed system integrates biomass gasification or pyrolysis, renewable hydrogen production, compressed hydrogen storage, a battery energy storage system, power conversion equipment, and a supervisory energy management system. Its central argument is that batteries should act as the primary fast‐response stabiliser, while hydrogen and biomass supply long‐duration storage, dispatchable fuel and resilience during periods of renewable scarcity. Synthesising recent literature on hydrogen storage, biomass‐to‐hydrogen conversion, battery energy storage, electric‐vehicle charging and multi‐timescale energy management, the analysis uses scenario‐based figures to show how a hybrid hydrogen‐biomass‐battery system can reduce frequency deviation, smooth daily renewable dispatch and lower annual carbon emissions relative to fossil‐dominated and renewable‐battery‐only baselines. Hybridisation proves technically strongest when each storage technology is assigned to its natural time scale: batteries for milliseconds to hours, hydrogen for hours to seasons, and biomass as a dispatchable renewable feedstock. Successful deployment, in turn, depends on degradation‐aware control, cost‐optimised electrolysis operation, sustainable biomass sourcing, safety‐compliant hydrogen infrastructure, standardised power electronics, and carbon accounting that distinguishes renewable, biomass‐derived and grid‐connected hydrogen production.

The growing significance of genomics has reshaped the boundaries of contemporary science and expanded its influence across healthcare, agriculture, and environmental sustainability (Biswas et al. 2...

This study evaluates recycled polyolefin-based thermoplastic waste reinforced with recycled nylon fiber as a sustainable candidate material for prosthetic socket applications. Recycled polyolefin-based thermoplastic waste (PW), recycled nylon fiber waste (NHFW), and PW/NHFW composites were fabricated through melt compounding and compression moulding, followed by mechanical, thermal, microstructural, statistical, and finite element analyses. Relative to PW, which exhibited a tensile modulus of 245.74 MPa, tensile strength of 37.57 MPa, flexural modulus of 422.09 MPa, and flexural strength of 36.89 MPa, the PW/NHFW composite achieved 311.61 MPa, 38.55 MPa, 571.98 MPa, and 50.75 MPa, respectively, corresponding to improvements of 26.8%, 2.6%, 35.5%, and 37.5%. One-way ANOVA confirmed that material composition significantly affected tensile strength (F = 156.26, p = 2.56E-09) and flexural strength (F = 530.95, p = 1.95E-12). Tukey HSD analysis further showed that NHFW had significantly higher tensile strength than both PW and PW/NHFW, whereas PW/NHFW was not significantly different from PW in tensile strength (mean difference = 0.98 MPa; p = .315). In contrast, all flexural pairwise comparisons were significant, including the improvement of PW/NHFW over PW (mean difference = 13.86 MPa; q = 13.91), indicating that nylon fiber reinforcement was expressed more strongly under bending than under uniaxial tension. Impact and hardness testing showed that PW/NHFW achieved an impact strength of 7.08 kJ/m ² and hardness of 14.48 HRM. Thermal analysis confirmed adequate processing stability, while microscopy revealed fiber embedment, fiber bridging, and dispersed nylon reinforcement, with local pull-out and debonding indicating interfacial limitations. Finite element predictions reproduced the experimental tensile and flexural trends and showed improved stress redistribution in PW/NHFW. Overall, the findings demonstrate that recycled polyolefin-based thermoplastic/nylon fiber composites offer a promising material-level platform for sustainable prosthetic socket development.

Natural fibre composites offer sustainability advantages but often suffer from limited structural reliability and thermal stability when used as single-fibre systems. In this study, vacuum-infused woven jute/epoxy and jute/glass hybrid epoxy laminates with 2-, 4-, and 6-ply architectures were fabricated and systematically evaluated to determine the combined effects of fibre hybridisation and ply architecture on thermo-mechanical performance. Tensile, flexural, impact, density, and thermogravimetric analyses were performed, while scanning electron microscopy and optical microscopy were used to examine fracture features and laminate morphology. Finite element analysis (FEA) was conducted to simulate stress distribution and deformation behaviour, and analysis of variance (two-way ANOVA) was used to determine the statistical significance of hybridisation and ply architecture. The results demonstrate that hybrid laminates significantly outperformed jute-only systems, with the 6-ply jute/glass configuration achieving tensile strength and modulus improvements of 22.6% and 283%, respectively, together with flexural strength and modulus enhancements of approximately 50% and 75%. Thermal analysis revealed delayed degradation onset and approximately fourfold higher residual char yield, confirming improved thermal resistance of the hybrid architectures, while microscopy revealed reduced fibre pull-out, improved fibre embedding, and more compact laminate structures. FEA predictions reproduced experimental mechanical responses with deviations between 2 – 14% and accurately captured stress localisation patterns consistent with observed failure modes, validating the numerical modelling framework. Overall, the results indicate that controlled hybridisation and ply architecture provide an effective route for improving the structural efficiency of vacuum-infused natural fibre composite laminates for lightweight engineering applications.

The integration of Digital Twin (DT) technology into building energy management systems has garnered significant attention for its potential to enhance energy efficiency. This study conducts a systematic literature review to critically evaluate the role of DTs in optimizing energy use, reducing operational costs, and improving the sustainability of building environments. Through a comprehensive analysis of existing research, this review highlights how DTs facilitate continuous monitoring, predictive maintenance, and operational optimization, thereby contributing to more energy‐efficient building operations. The findings reveal that while DTs offer substantial benefits, challenges such as data integration, high initial costs, and the need for specialized expertise hinder widespread adoption. To address these barriers, this study proposes a framework for the successful implementation of DT technology in building energy management, emphasizing the importance of standardized protocols, cross‐disciplinary collaboration, and incremental scaling. This study provides valuable insights for both practitioners and researchers, offering a strategic roadmap to leverage DT technology for achieving energy sustainability and operational excellence in the built environment.