Gábor Hasulyó^*

Energy Engineering, Vol.123, No.8, 2026, DOI:10.32604/ee.2026.081099 - 12 July 2026

Abstract The current global energy situation is very fragile. Much more stable and predictable energy security is needed. Due to global climate conditions, it is advisable to prioritize fuels that are high in energy content and relatively easy to produce, such as hydrogen. However, the widespread deployment of hydrogen refueling stations is hampered by significant safety challenges, including hydrogen’s high flammability, its tendency to leak, and high-pressure storage requirements. This study examines how digital twin technology can be implemented to improve the safety and operational efficiency of hydrogen facilities. A dynamic digital twin model was developed… More >

Antonio Gimeno, Emilio Larrodé^*

CMES-Computer Modeling in Engineering & Sciences, Vol.147, No.3, 2026, DOI:10.32604/cmes.2026.081630 - 30 June 2026

Abstract This paper presents the development of a digital twin of a heavy-duty electric truck powered by a hybrid energy system based on a hydrogen fuel cell and a battery pack. The objective of the model is to analyze different energy management strategies and to determine how the power demand of a real route can be shared between both energy sources, while keeping the fuel cell within safe operating limits to preserve its service life. The digital twin simulates vehicle dynamics, traction, and regenerative braking, and the main operational constraints of the fuel cell, including minimum… More >

Wenxin Luo¹, Kaiwen Wang¹, Pugalenthiyar Thondaiman², Qianqian Wang^1,*

Frontiers in Heat and Mass Transfer, Vol.24, No.3, 2026, DOI:10.32604/fhmt.2026.082228 - 29 June 2026

Abstract Hydrogen (H₂) crossover in proton exchange membrane fuel cells (PEMFCs) reduces performance and poses safety risks, but its behavior under rapidly changing loads, which are common in vehicles, is not well understood. To address this, we developed a three-dimensional, two-phase, non-isothermal model that tracks H₂ from dissolution in the anode, through transport across the membrane, to reaction at the cathode. The analysis shows that diffusion dominates whereas convection contributes little. Key findings are as follows: H₂ crossover reduces the open-circuit voltage by 210 mV and raises cathode temperature by approximately 0.2°C; reducing the membrane thickness from 20… More >

Jalpa Thakkar¹, Siddharth Shankar Mishra², V. Shanmugapriya³, Mohan Kolhe^4,*

Energy Engineering, Vol.123, No.7, 2026, DOI:10.32604/ee.2026.078267 - 18 June 2026

Abstract The big challenge in developing wind energy over the past century, which has focused on environmentally friendly production methods to meet the requirements of modern power systems, is the need for holistic architectures that can cope with variability, connection issues, and sector coupling far beyond conventional electricity-only models. This review offers a critically synthesized, process-level overview of progressive wind–hydrogen hybrids, offering a collective view of advancements in electrical layouts, hydrogen-driven conversion routes, and AI-driven control schemes. In contrast to previous surveys that consider these areas in isolation, we provide an explicit examination of the technical… More >

Yansen Sun^1,2, Yi Ding³, Hualei Cui⁴, Yuanchao Hui⁵, Yupeng He^1,2,*

Energy Engineering, Vol.123, No.7, 2026, DOI:10.32604/ee.2025.072860 - 18 June 2026

Abstract Integrated energy systems (IES) are pivotal for achieving low-carbon transitions, yet their optimization under carbon constraints remains challenging. This paper proposes an optimal scheduling model for IES that synergistically combines power-to-gas coupled with carbon capture systems (P2G-CCS) and hydrogen-blended natural gas under a tiered carbon trading mechanism. The model innovatively refines the P2G process into two stages (electrolysis and methanation), utilizing methanation reaction heat to enhance efficiency. It further incorporates hydrogen blending into gas turbines and boilers and implements a tiered carbon trading mechanism to constrain emissions. The objective is to minimize total costs, including… More >

Wessam M. Serag El-Din^1,*, Kamal E. Attia¹, Taghreed E. Eissa^2,*, Tarek M. Noor El-Deen², Hadeer Darwish^1,3, Ghadah H. Al Hawas^4,5, Modhi O. Alotaibi^6,7

Phyton-International Journal of Experimental Botany, Vol.95, No.5, 2026, DOI:10.32604/phyton.2026.078357 - 27 May 2026

Abstract Water salinity is a growing environmental concern that significantly impacts soil health, agricultural productivity, and freshwater sustainability, especially in arid regions. This study evaluated the comparative effects of foliar-applied glutathione (GSH) and hydrogen peroxide (H₂O₂) on growth, flower yield, essential oil composition, and physiological responses of Matricaria chamomilla L. under water salinity levels. The experiment was conducted during the 2022/2023 and 2023/2024 seasons at the Experimental Farm of El-Quassassin, Ismailia, Egypt, using a factorial randomized complete block design with three replicates. Foliar applications of GSH (1, 2, and 3 mM) and H₂O₂ (5, 10, and 20 mM)… More >

Xinhao Lin¹, Lei Yu¹, Shuyin Duan¹, Yinliang Liu¹, Lvzerui Yuan¹, Xiao Chen^1,*, Yiqing Lian²

Energy Engineering, Vol.123, No.6, 2026, DOI:10.32604/ee.2026.072845 - 27 May 2026

Abstract To address the operational challenges posed by renewable energy generation uncertainty and load fluctuations in DC microgrids, this paper proposes a hierarchical coordinated optimization control strategy for electricity-hydrogen hybrid DC microgrids (EH-DC-MG). The strategy aims to leverage the synergistic advantages of hybrid electricity-hydrogen energy storage to simultaneously achieve multiple objectives, including economic system operation, efficient utilization of renewable energy, and reliable power supply. The upper optimization scheduling layer formulates a mixed-integer linear programming model with the objective of minimizing the total system cost, which incorporates equipment operation and maintenance expenses, battery depreciation, penalties for renewable… More >

Yan Wang^1,#, Jialei Zhu^2,#, Shiyang Wei^3,4,#, Lijie Jin¹, Zhanqiu Liu¹, Jie Xu¹, Nana Yang¹, Xuefeng Jiang⁴, Caizhi Wang^1,*, Lingling Wang^1,*

Oncology Research, Vol.34, No.5, 2026, DOI:10.32604/or.2026.068833 - 22 April 2026

Abstract Background: The role of 4-hydroxyphenylpyruvate dioxygenase-like protein (HPDL) in endometrial cancer (EC) progression remains poorly understood, particularly its involvement in metabolic-epigenetic crosstalk via lactate-driven histone lactylation. This study aimed to investigate HPDL’s mechanistic contribution to EC pathogenesis. Methods: Stable HPDL-overexpressing and knockdown EC cell lines (HEC-1-B and AN3CA) were generated using lentiviral vectors. Functional assays (proliferation, migration, invasion), subcutaneous xenograft models in BALB/c nude mice, and molecular analyses were conducted. Lactate levels, Pan-lysine lactylation (pan-kla), histone H3K18 lactylation (H3K18la), and effects of sodium oxamate (lactate modulator) were assessed. Lactate Dehydrogenase A/Lactate Dehydrogenase B (LDHA/LDHB) knockdown,… More >

Chun Wu^1,2,3,4,*, Zhiqiang Ma^2,3, Lina Dong^2,3, Xuhui Wang^2,3, Changsheng Lou¹, Runqing Liu^1,*, Wenli Pei⁴

CMC-Computers, Materials & Continua, Vol.87, No.3, 2026, DOI:10.32604/cmc.2026.077864 - 09 April 2026

Abstract The intermetallic compounds with modulated electronic structure can provide more catalytically active sites and enhance electrocatalytic performance. In this study, the first-principles calculation method has been employed to investigate the potential of L1₀-NiM (M = Mn, Fe, Co, Cu, Zn, Mo) intermetallic compounds for electrocatalytic hydrogen evolution reaction (HER). Firstly, the L1₀-NiM present a homogenized charge transfer environment, where the Bader charge difference on the catalyst surface is below 0.13 e, significantly mitigating the locally strong adsorption of adsorbates in Ni. Additionally, the L1₀-NiM also fine-tunes the antibonding orbital interactions with adsorbates, facilitating both water dissociation and More >

Yujie Zhang, Yankai Zhao, Zhuang Zhao, Mengmeng Shan, Bochen Xu, Haoquan Xue, Junxuan Xu, Fan Wu, Qiang He^*

Journal of Polymer Materials, Vol.43, No.1, 2026, DOI:10.32604/jpm.2026.076617 - 03 April 2026

Abstract This study presents a sustainable approach for the valorization of spent coffee grounds (CG) by converting them into carboxylated cellulose nanofibrils (CG-TCNF) via formic acid/hydrogen peroxide pretreatment followed by TEMPO/NaClO/NaClO₂-mediated oxidation. The pretreatment efficiently removed lignin, hemicellulose, and other non-cellulosic components, yielding purified cellulose (CG-C) with high crystallinity (CrI = 84%). Subsequent regioselective oxidation introduced carboxyl groups at the C6 position of cellulose chains, achieving a high carboxylate content of 1.4 mmol/g. The resulting CG-TCNF exhibited a well-dispersed nanofibrillar morphology with an average width of 3.57 nm and a high specific surface area of 265 m²/g. More >