Our Team
Management Team
TWAGIRAYEZU Gratien, PhD
Dr. Gratien Twagirayezo is a dedicated environmental engineer, researcher, and academic specialist focusing on sustainable environmental solutions. He earned his PhD from the Chinese Academy of Sciences, specializing in water and wastewater treatment, environmental pollution control, waste management, soil remediation, and innovative technologies for environmental protection.
Through his academic and professional work, Dr. Twagirayezo contributes to developing effective and sustainable approaches to major environmental challenges. His research demonstrates strong expertise in pollution removal, resource recovery, and environmentally friendly treatment technologies. He is recognized for his commitment to scientific innovation, environmental sustainability, and practical solutions that support cleaner water, effective waste management, and healthier communities.
Deputy Managing Director
IHIMBAZWE Michee, MBA
Ihimbazwe Michee is an academic researcher and author whose work focuses on service system optimization, project quality supervision, and client experience enhancement. He earned his degree from Lanzhou Jiaotong University in Lanzhou, China, following earlier studies at Guizhou Minzu University. His published research includes studies on international students’ satisfaction with China’s e-payment systems from a Belt and Road Initiative perspective.
In his role as Deputy Managing Director, Michee coordinates professional teams, oversees service implementation, and ensures strict compliance with academic ethics and industry standards. His operational oversight guarantees that every service project is executed seamlessly, supporting sustainable, high-quality brand development and a reassuring client experience.
Editor's Team
IRUMVA Olivier, PhD
Dr. Irumva Olivier is an environmental engineer and researcher specializing in environmental sustainability, pollution management, waste management, water resources, and sustainable development. He holds a Master’s degree in Environmental Engineering from Guizhou Minzu University in China and has pursued Doctoral research at the University of Nebraska–Lincoln in the USA. His research directly addresses critical environmental challenges, including plastic and electronic waste, water and sanitation, contaminants, climate variability, and environmental health.
In addition to his research contributions, Dr. Irumva oversees daily editing operations, quality inspection, team training, and manuscript risk control at TI Nexus Support Center. He is dedicated to advancing sustainable solutions through interdisciplinary research, engineering innovation, and high-quality academic services.
Mohamed Aboueldahab, PhD
Dr. Mohamed Aboueldahab is a researcher at the Institute of Geochemistry, Chinese Academy of Sciences. His primary work focuses on understanding the mechanisms of photosynthesis through the application of stable isotopes, geochemical approaches, and biological techniques.
His broad research interests encompass algae and plant physiology, carbon cycling, and the intricate interactions between inorganic carbon and photosynthetic systems. As part of the Editor’s Team, Dr. Aboueldahab applies his deep technical and scientific expertise to ensure rigorous standards and quality in manuscript reviews and academic evaluations.
Theogene Hakuzweyezu, PhD
Dr. Theogene Hakuzweyezu is a civil, structural, and geotechnical engineer based at Shenzhen University in Shenzhen, China. He possesses a strong passion for advancing research aimed at extending the service life of concrete infrastructure through the exploration and application of innovative admixtures that improve resilience against harsh environmental conditions and structural challenges.
His primary areas of focus include the development of sustainable cement-based materials and admixtures, multiscale characterization techniques, anti-corrosion additives, concrete durability enhancement, and Carbon Capture, Utilization, and Storage (CCUS) technologies. As an editor, Dr. Hakuzweyezu leverages his specialized engineering background to ensure technical precision and high standards across all structural and material science submissions.
Phillipe Bakunzibake, PhD
Dr. Phillipe Bakunzibake is an academic researcher and specialist based at Lanzhou Jiaotong University in Lanzhou, China. He has been extensively involved in research related to water resources, environmental pollution, waste management, and environmental engineering.
His academic contributions include significant research on rainfall intensity and hydrological design, alongside studies examining plastic waste management and broader environmental challenges. As a core member of the Editor’s Team, Dr. Bakunzibake brings robust analytical expertise to manuscript reviews, supporting authors in refining their methodology and strengthening academic impact.
Service Team
Hongqin Ji
Hongqin Ji serves as the Customer Service Manager at TI Nexus Support Center, leading a dedicated team of 10 professional academic service specialists. The team is thoroughly versed in the entire academic research lifecycle and international journal publication processes.
In her role, Hongqin oversees one-on-one client demand communication, personalized service scheme customization, real-time project progress tracking, and team resource coordination guidance. Adhering to efficient, patient, rigorous, and professional service principles, she ensures every client’s unique academic needs are accurately met and seamlessly connected with editing, consulting, and training teams.