https://cris.library.msu.ac.zw//handle/11408/886 2026-04-05T16:34:58Z 2026-04-05T16:34:58Z Mudyiwa, Farai Ngwarati, Tendai Talent Maregedze, Lawrance Mavesere, Fungai Murove, Douglas https://cris.library.msu.ac.zw//handle/11408/6849 2025-10-14T08:51:17Z 2024-01-01T00:00:00Z

Title: Sustainable school furniture manufacturing: a case of a basic workshop innovation in Zimbabwe Authors: Mudyiwa, Farai; Ngwarati, Tendai Talent; Maregedze, Lawrance; Mavesere, Fungai; Murove, Douglas Abstract: Designing and developing furniture and equipment in educational institutions is essential for creating optimal learning environments that meet students' ergonomic, functional, and educational needs. Implementing import substitution industrialization in schools, universities, colleges, growth points, and resettlement areas can revitalize Zimbabwe's economy, aiding its transition to a middle-income status. This can be achieved by establishing mechanical workshops in these areas to produce basic school furniture. Collaborations between these workshops and educational institutions can lead to cost-effective production, reducing reliance on imports from major cities and towns. Such partnerships also promote innovation and business incubation through knowledge and technology exchange, supporting the implementation of Education 5.0 across all centers, colleges, and universities. This study employs a participatory approach, involving students and staff in workshops to design and develop innovative, sustainable furniture. The experimental methodology includes collaborative brainstorming sessions, prototyping, and feedback loops conducted within an educational setting to assess the practicality and functionality of various designs. The participatory workshop approach serves as a model for future initiatives in educational product design and manufacturing. Import substitution industrialization, particularly at universities, colleges, growth points, and resettlement areas, offers a promising pathway to elevate Zimbabwe's economic status. By establishing mechanical workshops and fostering collaborations between startups and educational institutions, local manufacturing of essential goods like school furniture can be stimulated. This approach not only reduces reliance on imports but also promotes innovation, technology transfer, and the adoption of industry 5.0 principles, ultimately contributing to a more self-sufficient and prosperous Zimbabwe.

2024-01-01T00:00:00Z Mudyiwa, Farai Ngwarati, Tendai Talent Maregedze, Lawrance Mavesere, Fungai Murove, Douglas Chiwororo, Abgail Maregedze, Laurence https://cris.library.msu.ac.zw//handle/11408/6847 2025-10-12T09:20:14Z 2024-01-01T00:00:00Z

Title: An assessment of Zimbabwe’s response level to coronavirus pandemic: a case of Harare Metropolitan Province Authors: Chiwororo, Abgail; Maregedze, Laurence Abstract: imbabwe’s coronavirus infections and deaths rates surged to a record high from March 2020 to July 2020,[1] with the end of July growth rate being an exponential growth of not less than a hundred infections per day while many people were infected and succumbed to coronavirus pandemic on the second wave,[2] leaving the Zimbabwean populace wondering whether there was any meaningful response to the coronavirus pandemic. As of the March 19, 2021, Zimbabwe’s total number of coronavirus-infected people, death, and recoveries were 36,662, 1510, and 34,257, respectively.[3] The respondents were government directorate, local government directorate, hospital doctors, hospital and polyclinics nurses, other health workers, council workers, university staff, NGOs in the province, and residents. A convergent mixed method (quantitative and qualitative) with descriptive thematic analysis was used in this research with a total of 678 questionnaire responses, 42 interviews, and 10 observations. Questionnaires had an overall response rate of 89.7%, while all the intended interviews and observations were done.

2024-01-01T00:00:00Z Chiwororo, Abgail Maregedze, Laurence Tambaoga,Victor Safer, Khadidja Matupire, Terence Ndiyamba, David Maregedze,Laurence Madzudzo, Erasmus https://cris.library.msu.ac.zw//handle/11408/6846 2025-10-12T08:31:56Z 2025-01-01T00:00:00Z

Title: A numerical simulation on improving biogas combustion in the blast furnace Authors: Tambaoga,Victor; Safer, Khadidja; Matupire, Terence; Ndiyamba, David; Maregedze,Laurence; Madzudzo, Erasmus Abstract: In order to preserve non-renewable resources and lessen the environmental impact of combustion systems in terms of pollutant emissions, it is necessary to think about increasing energy efficiency and switching to alternative fuels for industrial combustion furnaces. However, their low calorific value in comparison to conventional natural gas may make their use problematic. This research paper considers oxygen enhanced combustion and oxidizer preheating as a way of improving the heating value of biogas which can be used as a substitute for natural gas in blast furnaces. Using Ansys Fluent, natural gas combustion is simulated, and biogas combustion is simulated with oxygen enhancement and oxidizer preheating. The results obtained show that the heat value of biogas increases with oxygen enhancement and oxidizer preheating.

2025-01-01T00:00:00Z Tambaoga,Victor Safer, Khadidja Matupire, Terence Ndiyamba, David Maregedze,Laurence Madzudzo, Erasmus L. Maregedze K. Chiteka R. Masike T. Kanyowa https://cris.library.msu.ac.zw//handle/11408/6523 2025-03-04T14:28:07Z 2024-12-11T00:00:00Z

Title: Ball mill energy efficiency optimization: A lifter face angle optimization approach Authors: L. Maregedze; K. Chiteka; R. Masike; T. Kanyowa Abstract: On average, approximately 40% of the total energy consumed by grinding comminution industries is attributed to industrial ball mills, underscoring the urgent necessity to address this energy consumption challenge. This study investigates the influence of lifter face angle variations on the performance of ball mills in comminution processes. Through a combination of Discrete Element Method (DEM) simulations and experimental design, the study explores the effects of lifter face angle on energy efficiency, wear rates, and comminution effectiveness. Findings reveal that smaller lifter face angles result in increased scattering of ore particles within the mill, while larger angles lead to reduced wear and improved grindability of materials. The optimal lifter face angle is identified as approximately 24.8°, falling within the typical range used by industrial ball mill accessories manufacturers. An overall energy saving of 5.89% is achieved by using the optimum ball mill lifter face angle of 24.8°. Recommendations for future research include further exploration of optimal parameters, experimental validation of findings, and the development of advanced modelling techniques. By implementing these recommendations, the study aims to contribute to enhanced efficiency, durability, and sustainability in ball mill operations.

2024-12-11T00:00:00Z L. Maregedze K. Chiteka R. Masike T. Kanyowa