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Satbayev University, Kazakhstan.
Darkhan Yeseyuly Erezhep is a Kazakh scientist, engineer, and academic leader currently serving as the Head of the Department of Standardization, Certification, and Metrology at KazNITU named after K. I. Satpayev, Kazakhstan. With over 10 years of academic and industrial experience, his expertise spans thermal physics, metrology, quality management, and energy systems. A double PhD holder, Dr. Erezhep is an award-winning educator and a leading voice in advancing Kazakhstan’s technical education and research infrastructure.
Dr. Darkhan Yerezhep is a distinguished scholar with dual Ph.D. degrees in Engineering—one in Thermal Physics and Theoretical Heat Engineering from ITMO University, Russia (2020), and another in Technical Physics awarded by the Ministry of Education and Science of Kazakhstan (2021). He holds a Master’s degree in Refrigeration and Cryogenic Engineering (2017) and a Bachelor’s degree in Standardization and Metrology (2015), both from ITMO University. Additionally, he pursued a second higher education in Financial Management, reflecting his interdisciplinary expertise. Dr. Yerezhep has also earned multiple professional certifications in standardization, scientific mentoring, and quality systems from leading institutions in Kazakhstan and Russia, further demonstrating his commitment to academic excellence and applied research.
Dr. Darkhan Yerezhep currently serves as the Head of Department at KazNITU in Almaty (2023–present), where he has led significant advancements including the development of Master’s and Ph.D. programs, fostering international collaborations, and increasing the department’s research funding tenfold. He also holds roles as Associate Professor and Researcher at KazNITU and the Physicotechnical Institute, and previously served as a Senior Lecturer at Al-Farabi Kazakh National University. His earlier career includes work as a Researcher and Design Engineer at ITMO University and Roselectromotor in St. Petersburg. Dr. Yerezhep has extensive teaching and research experience in cryogenics, metrology, quality systems, and technical regulation.
Thermal physics and thermoelectric systems
Cryogenic engineering
Standardization and metrology
Quality assurance in industrial systems
Energy system efficiency and low-temperature processes
Passionate about integrating SDG goals, inclusive education, and scientific commercialization in engineering research.
🏅 Best University Teacher (2024) – Kazakhstan Ministry of Education
🎓 State Scientific Scholarship for Talented Young Scientists (2024–2025)
Led department to 2nd place in Atameken National Ranking (2024)
Recipient of state and institutional recognition for leadership in education and science.
🧪 1. Multiple Phase Transitions in Ethanol Thin Films Obtained by Physical Vapor Deposition
Journal: Applied Surface Science
DOI: 10.1016/J.APSUSC.2024.162259
WOSUID: WOS:001402656800001
Co-authors: Aldiyarov A., Sokolov D., Korshikov E., Nurmukan A., Tasmukhanova A., Ramos M.A.
This article explores complex phase behaviors in ethanol thin films created via physical vapor deposition, highlighting unique thermodynamic transitions.
💧 2. Geoinformation and Analytical Support for the Development of Promising Aquifers for Pasture Water Supply in Southern Kazakhstan
Journal: Water
Date: April 2025
DOI: 10.3390/w17091297
Co-authors: Tazhiyev S., Murtazin Y., Sotnikov E., Rakhimova V., Adenova D., Abdizhalel M., Yerezhep D.
This study presents a GIS-based approach to assessing groundwater potential for sustainable livestock support in arid Kazakh regions.
🚀 3. Optimizing Combustion Characteristics of Ammonium Perchlorate Composites with Nickel-Enhanced Carboxymethyl Cellulose
Journal: Aerospace
Date: March 2025
DOI: 10.3390/aerospace12040270
Co-authors: Nurguzhin M., Janikeyev M., Omarbayev M., Yermakhanova A., Meiirbekov M., Zhumakhanov M., Lesbayev A., Yerezhep D., Atamanov M., Tulepov M.
The work investigates improvements in the combustion efficiency of AP-based propellants through the use of nickel-modified additives.
❄️ 4. Криогенная установка для FTIR-спектроскопического исследования поведения углеводородных соединений при атмосферном давлении
Journal: Bulletin of Toraighyrov University. Energetics series
Date: March 28, 2025
DOI: 10.48081/NJKI9829
Co-authors: Кенбай А. А., Алдияров А. У., Ережеп Д. Е.
Title translation: Cryogenic Setup for FTIR Spectroscopic Study of Hydrocarbon Compounds at Atmospheric Pressure
The article describes a cryogenic system designed for FTIR spectroscopy to analyze hydrocarbon behavior under atmospheric conditions.
University of Massachusetts Lowell, United States.
Florence Nkemamaka Acha is a dedicated researcher in polymer engineering, with expertise in biomaterials, nanotechnology, and composites. Currently pursuing a Ph.D. in Plastics Engineering at the University of Massachusetts, Lowell, she has an impressive academic track record and multiple research publications. Florence has significant teaching, research, and industrial experience, complemented by numerous leadership and volunteer roles. She has received several prestigious awards for her academic excellence and leadership contributions.
Florence Nkemamaka Acha is currently pursuing a Ph.D. in Plastics Engineering at the University of Massachusetts, Lowell, where she is working under the supervision of Prof. Joey Mead on developing PFAS-free superhydrophobic coatings for textile applications. She holds a Master of Engineering in Plastics Engineering with honors from the same institution, with an impressive GPA of 3.917/4.0, and is expected to complete her degree in February 2025. Florence earned her Bachelor of Engineering in Polymer and Textile Engineering with first-class honors from the Federal University of Technology, Owerri, Nigeria, in 2019, achieving a stellar GPA of 4.67/5.0. Her undergraduate thesis focused on evaluating the physical and end-use properties of alkyd paints using local materials as extenders. Prior to her university studies, she completed her secondary education at Elaihor Grammar School, Egweaholor-Isi, Edo State, Nigeria, in 2013.
Florence Nkemamaka Acha has built a strong foundation in academic research and teaching through her roles at the University of Massachusetts, Lowell. She has been a Research Assistant since May 2023, working on innovative projects in plastics engineering, and served as a Graduate Teaching Assistant from August 2023 to August 2024, assisting in the delivery of key engineering courses.
In addition to her academic roles, Florence gained valuable industry experience during her production internship at Obino Industrial Company Limited in Nigeria. She also worked as a Research Assistant at Igwe Isaac Laboratory from 2019 to 2023 and as a Business Development Officer at Jimcol Resources Nig. Ltd., where she developed her business and technical expertise. This diverse experience equips her with both technical and leadership skills essential for addressing complex engineering challenges.
Florence’s research focuses on:
Polymer Engineering
Polymer Science
Composites
Biomaterials
Material Science
Polymer Chemistry
Nanotechnology
Best Graduating Student Award, Polymer and Textile Engineering, FUTO (2019)
IBE MIT Alumni Award for Best Graduating Student, Polymer and Textile Engineering, FUTO (2019)
Educational Support Award, HillCity Foundation, Nigeria (2016-2019)
Delta State Bursary Scholarship, Delta State Bursary and Scholarship Board (2015-2019)
Award of Excellence for Service and Leadership, Holiness Campus Fellowship, FUTO (2019)
Scheff T.; Acha, F.; Diaz Armas N.; Mead J.L.; Zhang, J. (2024). Tuning Wetting Properties Through Surface Geometry in the Cassie-Baxter State. Biomimetics, 2025, 10, 20.
Isaac O. Igwe, Florence N. Acha, et al. (2021). Utilization of Granite Quarry Dust Extender in Formulating Anti-Corrosive Paints for the Protection of Steel. Australian Journal of Science and Technology, 5(3), 631-637.
Book Chapter: Florence N. Acha (2024). Cleaning of Paints. In: Isaac O. Igwe (ed.). The Science and Technology of Paints. Submitted for publication.
Isaac O. Igwe, Florence N. Acha, Christian O. Anyaegbu, et al. (2020). Formulation of Anti-Corrosive Alkyd Paints Based on Umuahia Clay Extender. SSRG International Journal of Polymer and Textile Engineering, 7(2), 25-30.
Ifeoluwa Sarah Fesojaye, Favour Dada, Florence N. Acha (2023). Innovative Applications of Nanomaterials in Semiconductor Manufacturing: Advancing Efficiency and Performance for Next-Generation Technologies.