Yu-Xin Miao | Environmental Science | Best Researcher Award

Published on by Applied Scientist

Assoc. Prof. Dr. Yu-Xin Miao | Environmental Science | Best Researcher Award

Teacher at Shenyang Normal University | China

Dr. Yu-Xin Miao, born in 1984, is an accomplished Associate Professor and a Supervisor of Master’s candidates, currently affiliated with Shenyang Normal University. With a Ph.D. from the State Key Laboratory of Fine Chemicals, Dalian University of Technology, he has made significant strides in the field of energy and environmental catalysis. Dr. Miao is an integral member of the Liaoning Innovation Team for “Energy and Environment Catalysis” and is recognized through prestigious programs such as the “Millions of Talents Project” in Liaoning Province and the Shenyang High-level Talent Support Plan. His role as a manager in Shenyang Science and Technology and a member of the Chinese Chemical Society reflects his leadership in academic and professional communities. His primary research focuses on the catalytic treatment of atmospheric pollutants, utilizing nanomaterials and heterogeneous catalysis techniques. With over 30 peer-reviewed publications in leading journals like Chinese Journal of Catalysis, Chemical Communications, and New Journal of Chemistry, as well as three patents to his name, Dr. Miao has demonstrated a strong track record of innovation. His contributions to over ten national and provincial research projects mark him as a rising authority in environmental chemistry and applied catalysis.

Professional Profile

Scopus | ORCID 

Education

Dr. Yu-Xin Miao received his doctoral degree in 2016 from the State Key Laboratory of Fine Chemicals at the prestigious Dalian University of Technology. His doctoral training placed strong emphasis on advanced research methodologies in chemical engineering, particularly in fine chemical synthesis and environmental catalysis. The rigorous academic environment and exposure to cutting-edge laboratory techniques enabled him to specialize in catalytic processes related to atmospheric pollutant mitigation. Prior to his Ph.D., he likely pursued foundational studies in chemistry or chemical engineering that prepared him for the competitive research landscape at the graduate level. His educational pathway reflects a deep commitment to scientific excellence and multidisciplinary integration, aligning physical chemistry with environmental applications. Dr. Miao’s academic background has laid a solid foundation for his subsequent research in nanomaterials, heterogeneous catalysis, and environmental remediation technologies. Furthermore, his education has empowered him with a comprehensive understanding of both theoretical and experimental aspects of chemical science, which he now leverages to supervise graduate students and lead funded research projects. His ability to translate complex scientific theory into applicable technologies for pollution control highlights the depth and utility of his academic training.

Professional Experience

Dr. Yu-Xin Miao currently serves as an Associate Professor at Shenyang Normal University, where he also supervises Master’s candidates. His professional journey is distinguished by his active role in several high-impact research and innovation programs. As a key member of the Liaoning Innovation Team for “Energy and Environment Catalysis,” he contributes to addressing critical environmental challenges through scientific and technological solutions. In addition to his academic duties, he plays a managerial role in Shenyang’s science and technology sector, bridging the gap between scientific research and practical implementation. He has led over ten research projects funded by prestigious institutions such as the National Natural Science Foundation of China and the Liaoning Provincial Natural Science Foundation. These include both general and youth projects, demonstrating his cross-generational leadership. Dr. Miao’s professional expertise lies in developing and applying catalytic technologies for air pollutant treatment, with a focus on utilizing nanomaterials in heterogeneous catalytic systems. His work has earned him multiple awards and recognition in regional and institutional talent support plans, confirming his position as a valuable asset in both academic and industrial contexts. His dual role as a researcher and academic mentor ensures the translation of research excellence to educational enrichment.

Research Interest

Dr. Yu-Xin Miao’s research interests are firmly rooted in environmental chemistry, with a primary focus on the catalytic treatment of atmospheric pollutants. He is particularly interested in the design and application of advanced nanomaterials for heterogeneous catalysis, aiming to address pressing issues related to air quality and environmental sustainability. His work involves the development of efficient catalysts capable of breaking down harmful gases and pollutants through advanced oxidation and reduction processes. Dr. Miao’s research combines fundamental studies in surface chemistry and reaction mechanisms with practical applications in pollution control technologies. He is also exploring novel catalytic pathways that enhance the selectivity and activity of materials under environmentally relevant conditions. By integrating material science with environmental engineering, his research contributes to the broader goals of green chemistry and sustainable development. His ongoing projects are aimed at developing cost-effective and scalable solutions for industrial and urban air purification. This includes collaborations with academic institutions, governmental agencies, and industry partners. Dr. Miao’s interdisciplinary research agenda reflects a strong commitment to scientific innovation that directly benefits ecological health and human well-being, positioning him as a leading figure in the field of catalytic environmental remediation.

Research Skills

Dr. Yu-Xin Miao possesses a comprehensive skill set in chemical engineering and environmental catalysis, particularly in the synthesis, characterization, and application of nanomaterials. He is adept at employing a range of analytical techniques such as X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS) to elucidate the structure and performance of catalytic materials. His proficiency in reaction engineering allows him to design and operate catalytic reactors for real-world applications in atmospheric pollution control. Dr. Miao is also skilled in kinetic modeling and mechanistic analysis, which he uses to optimize catalytic processes and understand reaction pathways. His experience includes managing large-scale research projects, securing competitive grants, and collaborating across interdisciplinary teams. Additionally, he is an effective academic mentor, guiding graduate students through the design and execution of experimental studies. His research is supported by a solid foundation in environmental science, materials chemistry, and surface catalysis, making him highly versatile in addressing multifaceted environmental challenges. Dr. Miao’s ability to integrate theoretical knowledge with practical applications enhances the relevance and impact of his work, and his technical and project management skills continue to drive forward cutting-edge research in catalytic environmental technologies.

Awards and Honors

Dr. Yu-Xin Miao has been the recipient of multiple awards and honors in recognition of his academic excellence and innovative research. He was selected for the “Millions of Talents Project” under the million people support plan by Liaoning Province, an initiative designed to cultivate and support top-tier scientific professionals. He has also been honored under the Shenyang High-level Talent Support Plan and the Outstanding Talent Support Plan of Shenyang Normal University, which further highlights his exceptional contributions to scientific research and academic leadership. These distinctions underscore his status as a key contributor to environmental catalysis research in northeastern China. In addition to these honors, Dr. Miao has led over ten major research projects funded by national and provincial science foundations, a testament to the trust and recognition bestowed upon him by leading research bodies. His successful track record of securing competitive funding and his consistent publication output in reputable journals also reflect his academic prestige. Furthermore, with three patents granted under his name, Dr. Miao’s innovations have extended beyond academic theory into practical applications, earning him both professional respect and societal impact. These accolades collectively affirm his role as a leading researcher in environmental chemistry.

Publications Top Notes

Title: Facile hydrothermal synthesis of hydroxyapatite nanosheets as highly “active” supports for stabilizing silver nanoparticles in toluene oxidation
Year: 2025

Title: Unlocking new frontiers in ultrasmall-sized metal nanoclusters for boosting electrochemical energy conversions
Year: 2025

Title: Highly dispersed silver nanoparticles supported on a hydroxyapatite catalyst with different morphologies for CO oxidation
Year: 2022

Title: Preparation of MgAl LDH with various morphologies and catalytic hydrogenation performance of Pt/LDH catalysts
Year: 2021

Conclusion

In conclusion, Dr. Yu-Xin Miao exemplifies academic excellence, scientific innovation, and impactful leadership in the realm of environmental catalysis. With a strong educational foundation and a Ph.D. from the State Key Laboratory of Fine Chemicals at Dalian University of Technology, he has cultivated a career dedicated to addressing critical environmental issues through advanced catalytic technologies. His extensive research on the treatment of atmospheric pollutants, combined with his expertise in nanomaterials and heterogeneous catalysis, places him at the forefront of sustainable chemical engineering. Dr. Miao’s contributions are not only evident in his over 30 peer-reviewed publications and three patents but also in his leadership roles in multiple provincial and national talent initiatives. As an Associate Professor and a mentor to graduate students, he is shaping the next generation of environmental scientists while continuing to lead high-impact research projects. His blend of academic, managerial, and technical skills enables him to bridge the gap between theory and application, contributing both to scientific advancement and societal benefit. Recognized through numerous awards and leadership positions, Dr. Miao’s career is a testament to sustained excellence and commitment in research, innovation, and education in environmental science and technology.

 

Sara Migliorini | Innovation Impact | Best Researcher Award

Published on by Applied Scientist

Dr. Sara Migliorini | Innovation Impact | Best Researcher Award

Assistant Professor From University of Verona, Italy

Sara Migliorini is an accomplished academic and researcher specializing in data management, artificial intelligence (AI), and blockchain technology. Since 2019, she has served as an Assistant Professor in the Department of Computer Science at the University of Verona. Her expertise lies in processing and analyzing large datasets for predictive modeling and developing recommendation systems, with a strong focus on the tourism and agrifood sectors. Migliorini is also deeply involved in exploring the potential of blockchain technology in information systems and IoT devices. She has significantly contributed to numerous scientific projects, serving as both a team member and principal investigator. Notably, she leads the PNRR iNEST Spoke 7 smart-agrifood project, focusing on data traceability through blockchain integration and analysis. Her prolific academic output includes 31 scientific articles published in international journals, 50 conference papers, and three monograph chapters. Beyond her research, Migliorini plays a vital role in coordinating and directing research grants at the University of Verona. Her dedication to technological innovation and practical application of advanced data analysis techniques makes her a prominent figure in the fields of AI, data science, and blockchain, driving impactful research with practical industry relevance.

Professional Profiles

 Education 

Sara Migliorini holds a distinguished academic background in computer science, underpinned by her specialized expertise in data management, artificial intelligence, and blockchain technology. She completed her Ph.D. in Computer Science from a reputed institution, where her research focused on large-scale data processing and predictive modeling. During her doctoral studies, she honed her skills in data analytics, machine learning, and recommendation systems, laying the foundation for her future academic and professional pursuits. Prior to her doctoral degree, Migliorini earned her Master’s and Bachelor’s degrees in Computer Science, both with honors, demonstrating her exceptional academic performance and analytical abilities. Throughout her academic journey, she actively participated in collaborative research projects, contributing to publications and conferences. Her strong educational foundation has equipped her with the technical proficiency and theoretical knowledge essential for her research endeavors. Her continuous engagement with advanced technological fields, particularly in the domains of data integration, AI, and blockchain, reflects her commitment to lifelong learning and innovation. This academic trajectory has not only shaped her expertise but also positioned her as a leading figure in computer science research, inspiring her students and peers with her technical depth and scholarly contributions.

 Professional Experience 

Sara Migliorini has built an extensive professional career characterized by her expertise in data science, artificial intelligence, and blockchain applications. Since 2019, she has been an Assistant Professor at the Department of Computer Science at the University of Verona. In this role, she has been actively engaged in both teaching and research, mentoring students while leading and contributing to various scientific projects. Her research portfolio spans predictive data analysis, recommendation systems, and AI-driven solutions tailored to the tourism and agrifood sectors. Additionally, Migliorini has played a key role in exploring blockchain’s potential for enhancing data traceability in IoT and information systems.

Beyond her teaching responsibilities, she has collaborated on numerous scientific grants, often serving as the principal investigator. She has successfully coordinated over ten research grants at the University of Verona, overseeing projects related to data integration and AI applications. Currently, she leads the PNRR iNEST Spoke 7 smart-agrifood project, where she spearheads blockchain-based data traceability initiatives. Her professional career is marked by a commitment to technological advancement and applied research, making her a prominent figure in the field of computer science. Her expertise continues to drive innovation, bridging the gap between academic research and real-world technological applications.

 Research Interest 

Sara Migliorini’s research interests revolve around data science, artificial intelligence, and blockchain technology, with a strong focus on their practical applications in various industries. Her primary area of expertise lies in the management, processing, and analysis of large datasets for predictive modeling and the development of recommendation systems. She is particularly interested in applying AI-driven analytics to the tourism and agrifood sectors, where data insights can enhance decision-making and operational efficiency.

Migliorini is also deeply involved in blockchain technology, specifically investigating its integration into information systems and IoT devices. Her work in this area focuses on enhancing data traceability, security, and reliability, which are crucial for applications in agrifood supply chains and smart systems. She is particularly intrigued by the convergence of AI and blockchain, exploring how these technologies can be combined to create transparent, secure, and efficient data ecosystems.

Her ongoing research in the PNRR iNEST Spoke 7 smart-agrifood project exemplifies her commitment to applying blockchain technology for large-scale data traceability. With a forward-thinking approach, she continues to explore emerging technologies, contributing to innovative solutions that address real-world challenges through advanced data analysis and secure technology frameworks.

 Research Skills 

Sara Migliorini possesses a robust skill set in data science, artificial intelligence, and blockchain technology. She is highly proficient in data processing, predictive analytics, and the development of recommendation systems, making her a key contributor to advanced data-driven projects. Her expertise includes applying machine learning algorithms and AI models to extract insights from large datasets, particularly for predictive and prescriptive analytics in the tourism and agrifood sectors.

In addition to her data analysis capabilities, Migliorini is skilled in blockchain technology, with expertise in integrating it into information systems and IoT platforms. She specializes in designing and implementing blockchain-based solutions for data traceability, ensuring transparency and security in data management. Her technical skills also extend to programming languages such as Python and R, as well as data visualization tools, enabling her to develop and present complex data models effectively.

Her proficiency in grant writing, project management, and team coordination has allowed her to lead multiple research grants successfully. With strong analytical skills, a problem-solving mindset, and a forward-looking approach to technology, Migliorini continues to expand her skill set, making significant contributions to the fields of AI, data science, and blockchain innovation.

 Awards and Honors

Sara Migliorini’s outstanding contributions to data science, artificial intelligence, and blockchain technology have earned her numerous awards and honors. As a leading researcher in the field, she has been recognized for her innovative work on data processing and predictive analytics. She has received prestigious research grants and funding from the University of Verona, where she serves as the scientific director for multiple projects. Her role in coordinating and leading over ten research grants highlights her expertise and dedication to advancing technology-driven solutions.

In addition to her grant leadership, Migliorini’s impactful research has been acknowledged through various accolades in academic conferences and symposiums. Her scientific publications, including 31 journal articles, 50 conference papers, and three monograph chapters, have garnered significant recognition, cementing her reputation in the academic community.

Her involvement in the PNRR iNEST Spoke 7 smart-agrifood project, where she leads the blockchain data traceability research, has further enhanced her standing as an influential figure in the field. Migliorini’s commitment to research excellence, combined with her innovative contributions, continues to earn her well-deserved honors, positioning her as a prominent and respected academic in data science and emerging technologies.

Conclusion 

Sara Migliorini is a distinguished academic and researcher whose expertise in data science, artificial intelligence, and blockchain technology has made a significant impact in both academia and industry. As an Assistant Professor at the University of Verona, she has demonstrated exceptional leadership by spearheading multiple scientific projects, mentoring students, and publishing extensively. Her contributions to data processing, predictive analytics, and blockchain traceability highlight her ability to apply advanced technologies to solve real-world problems, particularly in the tourism and agrifood sectors.

Her innovative research skills, coupled with her proficiency in AI, data science, and blockchain applications, have earned her recognition in the academic community. Through her work on the PNRR iNEST Spoke 7 smart-agrifood project, she continues to drive technological advancements, promoting transparency and efficiency in data management.

Migliorini’s dedication to technological innovation, academic excellence, and real-world application of cutting-edge research makes her a leading figure in her field. Her continued efforts to bridge the gap between theoretical research and practical solutions solidify her reputation as a visionary academic, committed to advancing technology for the benefit of society.

 Publications Top Notes

  1. Enhancing Business Process Models with Ethical Considerations

    • Authors: B. Amico, Beatrice; C.K. Combi, Carlo K.; A. Dalla Vecchia, Anna; B. Oliboni, Barbara; E. Quintarelli, Elisa

  2. Augmentation Techniques for Balancing Spatial Datasets in Machine and Deep Learning Applications

    • Authors: A. Belussi, Alberto; D. Garofolo, Diego; S. Migliorini, Sara

  3. A Generic Machine Learning Model for Spatial Query Optimization based on Spatial Embeddings

    • Authors: A. Belussi, Alberto; S. Migliorini, Sara; A. Eldawy, Ahmed

    • Year: 2024

    • Citations: 2

  4. A Survey on Data Availability in Layer 2 Blockchain Rollups: Open Challenges and Future Improvements

    • Authors: M.B. Saif, Muhammad Bin; S. Migliorini, Sara; F. Spoto, Fausto

    • Year: Not specified

    • Citations: 3

  5. Promoting Sustainable Tourism by Recommending Sequences of Attractions with Deep Reinforcement Learning

    • Authors: A. Dalla Vecchia, Anna; S. Migliorini, Sara; E. Quintarelli, Elisa; M. Gambini, Mauro; A. Belussi, Alberto

    • Year: 2024

    • Citations: 3

  6. A Learning-Based Framework for Spatial Join Processing: Estimation, Optimization, and Tuning

    • Authors: T. Vu, Tin; A. Belussi, Alberto; S. Migliorini, Sara; A. Eldawy, Ahmed

    • Year: 2024

    • Citations: 2

  7. Efficient and Secure Distributed Data Storage and Retrieval Using Interplanetary File System and Blockchain

    • Authors: M.B. Saif, Muhammad Bin; S. Migliorini, Sara; F. Spoto, Fausto

    • Year: 2024

    • Citations: 6

  8. Blockchain-Based Multirole Authentication and Authorization in Smart Contracts with a Hierarchical Factory Pattern

    • Authors: M.B. Saif, Muhammad Bin; S. Migliorini, Sara; F. Spoto, Fausto

Shedrack Mgeni | Energy Sustainability | Applied Research Award

Published on by Applied Scientist

Mr. Shedrack Mgeni | Energy Sustainability | Applied Research Award

Mkwawa University, Tanzania

Shedrack Thomas Mgeni is a dedicated and accomplished Senior Teacher of Chemistry and Biology with over 17 years of teaching experience. He is passionate about bioenergy research, with a particular focus on bioethanol production from fruit wastes as an alternative energy source. Mgeni holds a Master of Science (Biology) with Education from the University of Dar es Salaam, Tanzania, earned in 2024. His Master’s research, under the supervision of Dr. Lewis Atugonza Mtashobya, Dr. Jovine Kamuhabwa Emmanuel, and Dr. Herieth Rhodes Mero, explored bioethanol production from fruit wastes. He also holds a Bachelor of Science in Chemistry and Biology with Education from Sokoine University of Agriculture (2015) and a Diploma in Secondary Science Education from Morogoro Teacher’s College (2010). Currently, Mgeni teaches at Miyuji Secondary School, Dodoma, where he also serves as the Academic Master and Sports & Games Master. He is widely published in biofuels research and is recognized for his innovative work on circular economy and renewable energy solutions. His dedication to advancing sustainable energy and promoting environmental conservation earned him the University of Dar es Salaam’s Distinguished Innovator of the Year award in 2024.

Professional Profiles

Education

Shedrack Thomas Mgeni has an extensive academic background, showcasing his dedication to science and education. He began his educational journey at Lugoda Primary School in Tanzania (1994–2000), followed by secondary education at Kibao Secondary School (2001–2004) and Kidugala Lutheran Seminary (2005–2007). In 2010, he earned a Diploma in Secondary Science Education (Chemistry and Biology) from Morogoro Teachers College. Building on this foundation, he obtained a Bachelor of Science (Chemistry & Biology) with Education from Sokoine University of Agriculture in 2015. In 2024, he completed his Master of Science (Biology) with Education at the University of Dar es Salaam. His postgraduate research focused on bioethanol production from fruit wastes as a renewable energy source. His diverse educational background reflects his strong foundation in both teaching and scientific research, equipping him with expertise in education, bioenergy, and sustainability.

Professional Experience

Shedrack Thomas Mgeni has an extensive teaching career spanning over 17 years, coupled with leadership roles and research experience. He began as a teacher at Matola Secondary School (2007–2010) in Njombe, where he taught Chemistry and Biology. He later became Head of the Chemistry and Biology departments (2010–2011), overseeing curriculum development and departmental activities. Mgeni also worked as a part-time teacher at St. Gertrude Secondary School in Njombe (2010–2011). His teaching practice (T.P) experiences include Bihawana High School (2013), Morogoro Teachers College (2014), and Mbeya Day High Secondary School (2015). From 2011 to 2015, he taught at Mabatini Secondary School, before moving to Kifanya Secondary School (2016–2021). In 2021, he joined Miyuji Secondary School in Dodoma, where he currently teaches Chemistry and Biology. Since 2022, he has served as the Academic Master, overseeing academic activities, and in 2024, he took on the role of Sports & Games Master, organizing sports events and fostering students’ extracurricular growth.

Research Interests

Shedrack Thomas Mgeni’s primary research interests lie in bioenergy generation, particularly bioethanol production from fruit wastes. His work focuses on exploring renewable energy sources and promoting circular economy practices. Through his research, Mgeni aims to develop sustainable bioenergy alternatives to fossil fuels, contributing to cleaner energy solutions and reducing environmental pollution. His recent studies involve using fruit waste juice enhanced with fermentable sugars, such as sorghum and millet, to increase bioethanol yields. Additionally, he is interested in converting bioethanol into value-added products, promoting waste recycling, and contributing to environmental conservation. Mgeni is committed to advancing biofuel technology and promoting sustainable practices, which aligns with global efforts toward cleaner and greener energy sources. His research directly contributes to renewable energy innovation and circular economy advancement.

Research Skills

Shedrack Thomas Mgeni possesses a diverse set of research skills, particularly in bioenergy production and sustainable waste management. His expertise includes bioethanol production processes, fermentation techniques, and bio-waste recycling. He is proficient in laboratory experimentation, biofuel yield optimization, and the application of sorghum and millet as fermentable sugar enhancers. Mgeni has extensive skills in experimental design, data analysis, and scientific documentation, demonstrated by his publications in peer-reviewed journals. His technical skills extend to biofuel characterization, evaluating the efficiency and quality of bioethanol produced from fruit wastes. Additionally, Mgeni is adept at academic writing, having co-authored multiple journal articles and review papers. His skills in presenting research findings at conferences, such as the University of Dar es Salaam Research and Innovation Week, showcase his ability to effectively communicate scientific results.

Awards and Honors

Shedrack Thomas Mgeni is recognized for his outstanding contributions to bioenergy research and innovation. In 2024, he was awarded the First Winner for Best Innovator of the Year during the 9th University of Dar es Salaam Research and Innovation Week at Mkwawa University College of Education. His award-winning project, titled Preparation of Value-Added Products Using Bioethanol Produced from Fruit Wastes, highlighted his innovative approach to renewable energy production. Additionally, Mgeni received the First Winner for Best Innovator of the Year award at the 9th University of Dar es Salaam Research and Innovation Week held from June 5th to 7th, 2024, for the same project. These prestigious awards underscore his significant contributions to sustainable energy research and his impact on promoting environmentally friendly technologies. His recognition as a distinguished innovator showcases his dedication to advancing bioenergy solutions.

Conclusion

Shedrack Thomas Mgeni is a highly accomplished educator and researcher with a strong commitment to advancing sustainable energy solutions. His expertise in bioethanol production from fruit wastes, coupled with his dedication to promoting circular economy practices, highlights his impactful contributions to renewable energy research. With over 17 years of teaching experience, Mgeni plays a vital role in shaping the academic and extracurricular development of students at Miyuji Secondary School. His numerous publications in biofuels research reflect his scholarly excellence and scientific impact. Through his innovative projects, Mgeni has demonstrated a keen ability to develop practical solutions to environmental challenges. His recognition as the Best Innovator of the Year underscores his influence in bioenergy innovation. Mgeni’s ongoing work in biofuel generation and his passion for education position him as a key advocate for cleaner energy and sustainable practices, driving positive change in both academia and society.

 Publications Top Notes

  1. Title: Bioethanol production from fruit wastes juice using millet and sorghum as additional fermentable sugar

    • Authors: Shedrack Thomas Mgeni, Lewis Atugonza Mtashobya, Jovine Kamuhabwa Emmanuel

    • Year: 2025

  2. Title: Potential Contributions of Banana Fruits and Residues to Multiple Applications: An Overview

    • Authors: Jovine Kamuhabwa Emmanuel, Lewis Atugonza Mtashobya, Shedrack Thomas Mgeni

    • Year: 2025

  3. Title: Bioethanol production from pineapple fruit waste juice using bakery yeast

    • Authors: Shedrack Thomas Mgeni, Lewis Atugonza Mtashobya, Jovine Kamuhabwa Emmanuel

    • Year: 2024

  4. Title: The prospect of fruit wastes in bioethanol production: A review

    • Authors: Shedrack Thomas Mgeni, Herieth Rhodes Mero, Lewis Atugonza Mtashobya, Jovine Kamuhabwa Emmanuel

    • Year: 2024