David Chepkonga | Thermal and Metallurgical Processes | Innovative Research Award

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Innovative Research Award

David Chepkonga
Jomo Kenyatta University of Agriculture and Technology, Kenya
David Chepkonga
Affiliation Jomo Kenyatta University of Agriculture and Technology
Country Kenya
Scopus ID 59419267100
Documents 3
Citations 4
h-index 1
Subject Area Thermal and Metallurgical Processes
Event Metallurgical Engineering Awards
ORCID 0000-0002-2180-1718

David Chepkonga is a Kenyan scholar in applied and computational mathematics whose academic work has contributed to the advancement of numerical modelling, heat transfer analysis, fluid dynamics, and computational simulation. His interdisciplinary research profile combines mathematical theory with engineering-oriented applications relevant to thermal and metallurgical processes.[1] Through scholarly publications, conference participation, and university teaching, he has demonstrated a commitment to analytical research and academic development in East Africa and beyond.[2]

Abstract

David Chepkonga and his contributions to applied mathematics, computational modelling, and engineering-oriented scientific research. His academic activities include numerical analysis, magnetohydrodynamic flow studies, thermal systems simulation, and epidemic modelling.[3] Through publications in peer-reviewed journals and participation in international conferences, Chepkonga has contributed to research areas connected to thermal sciences and metallurgical engineering applications. His research profile reflects an emphasis on analytical rigor, interdisciplinary collaboration, and mathematical approaches to industrial and environmental challenges.[4]

Keywords

Applied Mathematics, Thermal Engineering, Metallurgical Processes, Computational Modelling, Fluid Dynamics, Heat Transfer, Numerical Analysis, Magnetohydrodynamics, Scientific Simulation, Engineering Research

Introduction

David Chepkonga working in this field often apply numerical techniques and mathematical simulations to understand heat transfer, fluid flow, and material behaviour under complex operating conditions. David Chepkonga has developed a research portfolio aligned with these objectives through studies involving nanofluid dynamics, magnetic field interactions, and predictive modelling systems.[2]

His academic work is associated with Jomo Kenyatta University of Agriculture and Technology in Kenya, where he completed advanced studies in applied mathematics and computational sciences. In addition to research, he has contributed to university teaching, supervision, curriculum development, and scholarly mentorship across multiple institutions.[1]

Research Profile

Chepkonga’s research profile focuses on computational fluid dynamics, thermal modelling, and engineering mathematics. His studies examine the interaction between magnetic fields, viscous flow systems, and heat transfer processes relevant to industrial and metallurgical applications.[3] His technical expertise includes MATLAB simulation, numerical analysis, and mathematical modelling techniques applied to engineering and environmental systems.

Research Contributions

A major component of Chepkonga’s work involves analysing thermal transport phenomena through computational approaches. His studies on gyro-tactic hybrid nanofluids and porous convergent pipe systems provide mathematical insight into complex flow behaviours and thermal conductivity patterns.[3] He has also contributed to mathematical epidemiology through research on disease transmission dynamics, including SIR-based modelling frameworks for Monkeypox and other infectious diseases. These studies illustrate the adaptability of mathematical methods across engineering and biomedical domains.[4]

Publications

  • Spectral Relaxation Analysis of Rotating Magnetohydrodynamic Viscous Flow and Heat Transfer Past a Stretching Sheet, Results in Engineering, 2026.
  • Modelling Heat and Mass Transfer in Gyro-tactic Hybrid Nanofluid Flow Through a Converging Pipe, International Journal of Ambient Energy, 2025.
  • Numerical Study of Multiphase Hybrid Gyro-tactic Nanofluid Flow Through Porous Convergent Pipe, Engineering Letters, 2025.

Research Impact

David Chepkonga’s studies combine mathematics, engineering analysis, and simulation techniques to address scientific questions relevant to industrial systems and emerging technological challenges.[5] His publications contribute to growing academic discussions in thermal sciences, metallurgical engineering processes, computational mathematics, and applied modelling. Participation in international conferences and academic workshops has also strengthened collaboration opportunities and research dissemination within the African scientific community.[2]

Award Suitability

David Chepkonga’s academic background and publication record support his suitability for recognition through the Innovative Research Award. His work demonstrates interdisciplinary integration between mathematics and engineering sciences, particularly in computational heat transfer and flow analysis.[3] The combination of research productivity, university-level teaching experience, conference engagement, and collaborative scholarly participation indicates sustained academic involvement.[4]

Conclusion

David Chepkonga represents a growing generation of African researchers contributing to computational mathematics and engineering analysis through applied scientific investigation. His research activities, publication portfolio, and commitment to higher education demonstrate continued engagement with interdisciplinary academic advancement. The Innovative Research Award recognizes scholarly contributions that support analytical problem-solving, engineering innovation, and scientific development within the broader academic and industrial community.

References

  1. Elsevier. (n.d.). Scopus author details: David Chepkonga, Author ID 59419267100. Scopus.
    https://www.scopus.com/authid/detail.uri?authorId=59419267100
  2. Chepkonga, D. (2019). Fluid flow and heat transfer through a vertical cylindrical collapsible tube in the presence of magnetic field and an obstacle. International Journal of Advances in Applied Mathematics and Mechanics
    web.archive.org
  3. Chepkonga, D. (2024). Modeling the spread of Mpox viral disease in African countries using a Bayesian hierarchical model. Commun. Math. Biol. Neurosci..
    https://scik.org/index.php/cmbn/article/view/8890
  4. Chepkonga, D. (2025). Optimizing Control Measures for a Vector-Host Epidemic Model: A Mathematical Analysis. Earth 
    https://www.researchgate.net/
  5. Chepkonga, D. (2024). Heat Transfer on a Non-Newtonian Hydromagnetic Fluid Flow through a Convergent Conduit with Chemical Reaction and Soret Effects.
    https://ijaamm.com/uploads/2/1/4/8/21481830/v12n1p6_57-69.pdf

Gabriel Fabricio Rocha de Carvalho Padua | Composite Solder Alloys | Best Nanomaterials in Metallurgy Award

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Mr. Gabriel Fabricio Rocha de Carvalho Padua | Composite Solder Alloys | Best Nanomaterials in Metallurgy Award

Assistant Project at Conecthus Institute of Technology and Biotechnology of Amazonas | Brazil

Gabriel Fabricio Rocha de Carvalho Padua focuses on nanomaterial-driven advancements in metallurgical systems, particularly graphene-reinforced Sn–Bi lead-free solder alloys. His research investigates intermetallic compound growth control, microstructural refinement, and reliability under thermal cycling using advanced characterization techniques. He has authored around seven peer-reviewed publications and a book chapter, contributing to nanomaterials in electronic interconnections. With a Scopus-recognized research profile, a document of 2, and citation record, his work reflects promising early-stage impact. His contributions align strongly with innovations in nanomaterials for metallurgical applications and electronic reliability.

Professional Profiles

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Hatem Abuelizz | Sustainable Metallurgical | Research Excellence Award

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Prof. Dr. Hatem Abuelizz | Sustainable Metallurgical | Research Excellence Award

Professor of Medicinal Chemistry at King Saud University | Saudi Arabia

Prof. Dr. Hatem A. Abuelizz is a distinguished researcher in medicinal chemistry and pharmaceutical biotechnology, with significant contributions to drug discovery and molecular design. His work emphasizes the synthesis and biological evaluation of quinazoline-based compounds with anticancer, antiviral, and antimicrobial potential. He has authored 147 Scopus-indexed publications, achieving 1,746 citations across 1,395 documents and an h-index of 24, reflecting strong research impact. His portfolio includes patented innovations and interdisciplinary studies integrating molecular docking and bioactivity evaluation, demonstrating excellence and sustained contribution to pharmaceutical research and innovation.

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Featured Publications

Beya Ouertani | Fabrication and Characterization | Research Excellence Award

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Assoc. Prof. Dr. Beya Ouertani | Fabrication and Characterization | Research Excellence Award

Associate Professor at University of Tunis El Manar | Tunisia

Assoc. Prof. Dr. Beya Ouertani is an accomplished researcher in condensed matter physics, specializing in the synthesis and characterization of semiconductor and porous thin films for energy and optoelectronic applications. Her work emphasizes low-cost spray pyrolysis routes for materials relevant to photovoltaics, sensors, and functional coatings, with demonstrated advances in structural, optical, and electrical performance. She has published 18 Scopus-indexed research articles, including high-quality papers in Ceramics International, Journal of Alloys and Compounds, and Materials Chemistry and Physics. Her scholarly output has received 335 citations, achieving a Scopus h-index of 10, reflecting sustained research impact and scientific excellence suitable for the Research Excellence Award.

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Featured Publications

Ayesha Tasawar | Hydrometallurgical | Excellence in Research Award

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Mrs. Ayesha Tasawar | Hydrometallurgical | Excellence in Research Award

Scientific Assistant at Institute of Process Metallurgy and Metal Recycling (IME), RWTH Aachen University | Germany

Mrs. Ayesha Tasawar is an emerging researcher in process metallurgy and sustainable materials engineering, with a strong focus on lithium-ion battery recycling and resource recovery. Her research addresses key challenges in circular economy technologies, particularly the hydrometallurgical processing of lithium iron phosphate (LFP) blackmass. She is the lead author of peer-reviewed journal articles in Resources, Conservation and Recycling and Metals, demonstrating original contributions to efficient lithium recovery through oxidative roasting and organic-acid-enabled leaching. Her work combines scientific rigor with industrial relevance, offering environmentally responsible solutions for advanced battery recycling. Scopus profile, 2 publications, emerging citation record, and emerging h-index.

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Bilal Ahmad | Computational Metallurgy | Research Excellence Award

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Mr. Bilal Ahmad | Computational Metallurgy | Research Excellence Award

University of Johannesburg | South Africa

Mr. Bilal Ahmad demonstrates emerging excellence in data science and artificial intelligence, with scholarly focus on machine learning and deep learning applications for complex, real-world problems. Research contributions emphasize predictive analytics and intelligent modeling, including peer-reviewed work on epidemic outbreak analysis using advanced computational techniques. The research reflects methodological soundness, interdisciplinary relevance, and alignment with current global challenges in data-driven systems. According to the Scopus profile, the researcher has 1 indexed publication, 2 total citations, and an h-index of 1, indicating early academic visibility and growing research impact. These contributions highlight strong potential for continued advancement and research excellence.

Citation Metrics ( Google Scholar )

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Featured Publications


Exploration of Epidemic Outbreaks Using Machine and Deep Learning Techniques
– Advances in Cybersecurity, Cybercrimes, and Smart Emerging Technologies, 2023

Qian Li | Minerals Engineering | Pioneer Researcher Award

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Prof. Qian Li | Minerals Engineering | Pioneer Researcher Award

Professor at University of South China | China

Prof. Qian Li, a distinguished scholar in biohydrometallurgy at the University of South China, has made exceptional contributions to understanding microbial processes in mineral engineering, particularly uranium bioleaching and residue stabilization. His research integrates microbiological mechanisms with mineral system engineering to address challenges in uranium extraction and environmental remediation. He has directed numerous national and provincial research projects focused on the behavior of iron/sulfur-oxidizing bacterial consortia, in-situ passivation of uranium residues, and eco-friendly leaching technologies. Prof. Li’s innovative studies on biogenic coatings, microbial oxidation, and nanobubble-assisted leaching have introduced new approaches to sustainable metal recovery and waste control. His extensive publication record exceeds 80 research articles in reputed journals including Journal of Hazardous Materials, Frontiers in Microbiology, and Journal of Cleaner Production, showcasing his interdisciplinary expertise and technical leadership. As documented in his Scopus profile, he has accumulated over 4,651 citations, 289 indexed documents, and an h-index of 39, underscoring his scientific impact and recognition within the international minerals engineering community. Through his pioneering work on microbial-mineral interactions, Prof. Li continues to advance the field toward cleaner and more efficient resource utilization, establishing himself as a leading figure in metallurgical and environmental biotechnology.

Profile : Scopus | ORCID | Google Scholar

Featured Publications

Li, S., Xiao, L., Sun, J., Li, Q., Li, G., Cui, Z., Li, T., & Zhou, X. (2025). Biogenic jarosite coating as an innovative passivator for acidic uranium residue stabilization using Acidithiobacillus ferrooxidans. Journal of Hazardous Materials, 471, 140229. DOI: 10.1016/j.jhazmat.2025.140229

Xiao, L., Li, S., Liu, X., Sun, J., Li, G., Cui, Z., Li, T., & Li, Q. (2024). Linked variations of bioleaching performance, extracellular polymeric substances (EPS) and passivation layer in the uranium bacterial-leaching system. Journal of Radioanalytical and Nuclear Chemistry, 334, 637–651. DOI: 10.1007/s10967-024-09851-6

Li, Q., Liu, X., Ma, J., Sun, J., Li, G., Cui, Z., & Li, T. (2023). Bidirectional effects of sulfur-oxidizer Acidithiobacillus thiooxidans in uranium bioleaching systems with or without sulfur by mixed acidophilic bacteria. Journal of Radioanalytical and Nuclear Chemistry, 332, 1787–1794. DOI: 10.1007/s10967-023-08841-4

Sun, J., Ma, J., Li, Q., Li, G., Shi, W., Yang, Y., Hu, P., & Guo, Z. (2022). Role of Fe/S ratios in the enhancement of uranium bioleaching from a complex uranium ore by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans consortium. Journal of Central South University, 29(12), 3858–3869. DOI: 10.1007/s11771-022-5216-1

Yang, Y., Li, Q., Li, G., Ma, J., Sun, J., Liu, X., Cui, Z., & Li, T. (2022). Depth-induced deviation of column bioleaching for uranium embedded in granite porphyry by defined mixed acidophilic bacteria. Journal of Radioanalytical and Nuclear Chemistry, 331, 3681–3692. DOI: 10.1007/s10967-022-08418-7

Chen, Z., Li, Q., Yang, Y., Sun, J., Li, G., Liu, X., Shu, S., Li, X., & Liao, H. (2022). Uranium removal from a radioactive contaminated soil by defined bioleaching bacteria. Journal of Radioanalytical and Nuclear Chemistry, 331, 439–449. DOI: 10.1007/s10967-021-08077-0

Abid Hussain | Shape Memory Alloys | Best Researcher Award

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Dr. Abid Hussain | Shape Memory Alloys | Best Researcher Award

Lab Engineer at University of Engineering and Technology, Peshawar | Pakistan

Dr. Abid Hussain is a mechanical and materials engineer recognized for his multidisciplinary research in advanced alloys, renewable energy technologies, and computational modeling. His studies focus on the development and enhancement of TiNiPdCu-based shape memory alloys produced via powder metallurgy, targeting high-temperature applications in energy and aerospace systems. He has also explored solar-driven water purification, Stirling engine design, and absorption cooling systems that integrate sustainable energy sources. Dr. Hussain’s research extends into computational fluid dynamics and structural analysis, emphasizing the mechanical performance of engineered systems under diverse environmental and seismic conditions. His publication record reflects a strong commitment to materials innovation, energy efficiency, and environmental sustainability. With 69 citations, 9 indexed documents, and an h-index of 5 in Scopus, Dr. Hussain continues to contribute impactful knowledge that advances metallurgical and mechanical engineering frontiers globally.

Profile : Scopus | ORCID | Google Scholar

Featured Publications

Manzoor, F., Wei, L., Hussain, A., Asif, M., & Shah, S. I. A. (2019). Patient satisfaction with health care services: An application of physician’s behavior as a moderator. International Journal of Environmental Research and Public Health, 16(18), 3318. Cited by 649 documents.

Klein Tank, A. M. G., Peterson, T. C., Quadir, D. A., Dorji, S., Zou, X., Tang, H., … Hussain, A. (2006). Changes in daily temperature and precipitation extremes in central and south Asia. Journal of Geophysical Research: Atmospheres, 111(D16). Cited by 630 documents.

Qing, M., Asif, M., Hussain, A., & Jameel, A. (2020). Exploring the impact of ethical leadership on job satisfaction and organizational commitment in public sector organizations: The mediating role of psychological empowerment. Review of Managerial Science, 14(6), 1405–1432. Cited by 515 documents.

Cheema, M. A., Malik, M. A., Hussain, A., Shah, S. H., & Basra, S. M. A. (2001). Effects of time and rate of nitrogen and phosphorus application on the growth and the seed and oil yields of canola (Brassica napus L.). Journal of Agronomy and Crop Science, 186(2), 103–110. Cited by 308 documents.

Hassan, F., Jamil, F., Hussain, A., Ali, H. M., Janjua, M. M., Khushnood, S., & … (2022). Recent advancements in latent heat phase change materials and their applications for thermal energy storage and buildings: A state of the art review. Sustainable Energy Technologies and Assessments, 49, 101646. Cited by 306 documents.

Raghukumar Bommenahalli | Mechanical Metallurgy | Best Researcher Award

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Raghukumar Bommenahalli | Mechanical Metallurgy | Best Researcher Award

Prinicipal Engineer at DEKRA Certification, Inc. | United States

Mr. Raghukumar Bommenahalli is a seasoned mechanical engineer with over two decades of industrial experience specializing in zero-emission transportation and energy infrastructure. Currently serving as Principal Engineer at DEKRA Certification Inc., he leads the Vehicle Innovation Grid Lab (ViGIL) and ADAS Data Collection Program, advancing California’s clean transportation initiatives through rigorous EV and EVSE testing, standards compliance, and interoperability validation. Prior to this, he was Program Manager for Codes and Standards at Nikola Motor Corporation, where he guided regulatory compliance and standards development for battery-electric and fuel-cell electric vehicles, including cybersecurity frameworks and ADAS integration for heavy-duty trucks. His earlier role at Cummins Inc. as Codes and Standards Compliance Leader saw him authoring 40+ validation plans across UL, CSA, IEC, and EN standards while pioneering hydrogen fuel cell and BEV compliance programs. Raghukumar has also contributed to major engineering projects in roles with TAAL Technologies, Creative Synergies Group, Toyo Denki Power Systems, and Cummins Generator Technologies. He is actively involved in global standards development as a voting member on multiple SAE task forces and as Co-Chair of the CharIN NACI Task Force. With a strong academic foundation that includes an Executive Master’s in Engineering Management from St. Cloud State University, a Master’s in Machine Design, and a Bachelor’s in Mechanical Engineering from Visvesvaraya Technological University, he complements his technical expertise with certifications such as PMP, DFSS, and internal auditing. In addition to his leadership in compliance, testing, and certification, he contributes as a peer reviewer for leading journals, organizes technical conferences, and holds a registered design patent in EV charging efficiency.

Pofile: Scopus | ORCID

Featured Publication

Bommenahalli, R. (2025). Effect of nickel on the mechanical properties of spray-formed Al-15Si-2Cu alloy at elevated temperatures. Journal of Alloys and Compounds.

Bommenahalli, R. (2025). Computing device for enhancing charging efficiency in electric vehicle [Patent]. UK Intellectual Property Office.

Bommenahalli, R. (2025). Fuel cell Class 8 trucks: Pioneering the path to sustainable heavy transportation. Website article.

Bommenahalli, R. (2025). Navigating the future: Innovations reshaping the EV charging landscape. International Business Times.

Zhe Wang | Metallurgical Engineering | Best Researcher Award

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Prof. Dr. Zhe Wang | Metallurgical Engineering | Best Researcher Award

Professor at University of Science and Technology Beijing, China

Zhe Wang is a professor at the University of Science and Technology Beijing. His academic journey, marked by extensive research in metallurgical engineering, began with a Ph.D. from the University of Wollongong, Australia. Since 2016, he has been a dedicated contributor to advancing recycling technologies for critical metals. With a focus on innovative solutions to supply security risks and environmental challenges, Dr. Wang’s work has significantly impacted industrial practices. His methods, such as supergravity-enhanced separation and matte smelting for lithium-ion batteries, are transformative, earning recognition from prestigious organizations. A prolific author and inventor, he holds multiple patents and has published over 43 SCI-indexed papers. His leadership extends to editorial roles and professional committees, fostering collaboration in the metallurgical community.

Professional Profiles📖

Scopus

Education 🎓

Dr. Wang’s educational foundation is deeply rooted in metallurgical engineering. He earned his doctoral degree (2012-2015) from the University of Wollongong, where he delved into innovative recycling methods for metal resources. His Ph.D. thesis focused on the molten separation of metals and related electrochemical processes. Prior to that, he pursued foundational studies in materials science, developing a profound understanding of alloy behaviors and high-temperature reactions. His academic pursuits emphasized practical applications, paving the way for his later industrial collaborations. This strong theoretical grounding underpins his current research, as he continues to educate future leaders in metallurgy at the University of Science and Technology Beijing.

Work Experience💼

Dr. Wang‘s professional career spans over a decade of impactful contributions to metallurgical research and education. From his initial role as an Associate Research Fellow at the University of Wollongong, he transitioned to teaching and research positions at the University of Science and Technology Beijing. Serving as a Lecturer (2016–2018), Associate Professor (2018–2024), and now as Professor, he has led numerous projects funded by national foundations and industry partners. His work bridges academia and industry, driving innovation in metal recycling technologies. His hands-on approach to research has resulted in industrial implementations with significant cost and efficiency benefits.

Research Focus

Dr. Wang specializes in high-value recycling of critical metal resources, tackling challenges in supply chain security and sustainability. His pioneering approaches, including supergravity-assisted separation and electrochemical methods, emphasize efficiency and scalability. His focus extends to recycling low-melting-point metals, refining titanium and zirconium through stable electrolytes, and developing smelting processes for precious metals. His research integrates theoretical insights and practical applications, bridging the gap between laboratory innovation and industrial utility.

Awards & Honors

Dr. Wang‘s achievements have been celebrated with numerous awards. Among these, the First Prize in the China Nonferrous Metals Industry Technological Invention Award (2022) stands out for his advancements in molten salt electrorefining. His contributions to supergravity-enhanced technologies have also been supported by the National Natural Science Foundation of China. As a recognized leader, he serves on editorial boards and professional committees, further solidifying his reputation as a thought leader in the field. His work’s industrial impact has earned accolades from organizations such as Baosteel and Shougang Group.

Conclusion✅

Dr. Zhe Wang exemplifies the qualities of a deserving candidate for the Best Researcher Award. His pioneering work in high-value recycling of critical metals, combined with a track record of impactful publications, patents, and industrial applications, underscores his significant contributions to science and industry. Addressing minor areas for improvement, such as increasing global collaboration and interdisciplinary engagement, could further elevate his already stellar profile. Dr. Wang’s innovative research and dedication make him a strong contender for this prestigious recognition.

📚Publications to Noted

 

Extraction and recovery of rare earth elements from NdFeB waste using bismuth reinforced by supergravity

Authors: Z. Wang, Zhenxiang Zhang, Long Meng, Chunjiang Li, Zhancheng GuCitations: 0

Year: 2024

Sustainable recycling of pure aluminum from waste chips under supergravity-enhanced separation: A cleaning process

Authors: Bolin Sun, Lei Guo, Z. Wang, Xi Lan, Zhancheng Guo

Year: 2024

Preparation of SiC/Al composite material by supergravity infiltration method and its properties

Authors: Yuan Li, Z. Wang, Zhancheng Guo

Citations: 6

Year: 2024

Grade-preserving recycling of highly polluted Al-Mg-Si alloys scrap: Continuous filtration under supergravity-induced

Authors: Bolin Sun, Xi Lan, Z. Wang, Ningjie Sun, Zhancheng Guo

Citations: 1

Year: 2024

Weak Electrostatic Force on K+ in Gel Polymer Electrolyte Realizes High Ion Transference Number for Quasi Solid-State Potassium Ion Batteries

Authors: Huize Yang, Wei Wang, Zheng Huang, Shufeng Yang, Shuqiang Jiao

Citations: 12

Year: 2024

The fundamental research on suspended dross in hot dip Al–Zn galvanising process

Authors: Rensheng Chu, Z. Wang, Ningjie Sun, Chengliang Xu, Zhancheng Guo

Year: 2024

CFD simulation and water model experiments with overflow-type supergravity reactor set up for continuously removing inclusions from aluminum melt

Authors: Z. Wang, Qilong Wei, Meng Hu, Zhancheng GuoCitations: 0

Year: 2024

Effect of Al2O3/SiO2 mass ratio and CaO content on viscosity and structure of slag for pyrometallurgical processing of spent automotive catalysts

Authors: Z. Wang, Qilong Wei, Chengbin Shi, Zhancheng Guo

Citations: 5

Year: 2024

Insight into compositional dependence of thermophysical properties and structure of Al2O3-SiO2-CaF2-CaO-Li2O melts

Authors: Xiuxiu Wan, Z. Wang, Jian Yang, Chengbin Shi

Citations: 5

Year: 2024

Review—Preparation of Hafnium Metal by Electrolysis

Authors: Ranran Wei, Zheng Huang, Tianwei Wei, Z. Wang, Shuqiang Jiao

Citations: 2

Year: 2024