The Nelson Mandela African Institution of Science and Technology: Recent submissions
Now showing items 81-100 of 2431
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Insights into antioxidant dosage determination for improving biodiesel oxidation stability: a comprehensive review
(Tylor & Francis Online, 2024-10-10)Concerns about energy security and environmental sustainability have increased the preference for renewable energy sources. Biodiesel, a renewable alternative to conventional diesel, has gained interest as a potential ... -
Design and performance analysis of portable solar powered cooler for vaccine storage
(SCI, 2024-10-31)The efficacy of vaccine storage is significantly impacted by temperature fluc- tuations within the cooler, often exacerbated by using phase change materials in existing cooler designs for remote areas. These materials ... -
Modeling and optimization of calcined bentonite replacement in the mechanical and durability properties of mortar
(Elsevier, 2024-11)Currently, pozzolanic materials are mostly recommended to improve the properties of cement composite materials and reduce environmental pollution, challenging the world owing to ordinary Portland cement (OPC) production. ... -
Modeling and Optimization of Sisal Fiber Degradation Treatment by Calcined Bentonite for Cement Composite Materials
(Tylor & Francis Online, 2024-10-06)The treatment of sisal fiber by pozzolanic materials like kaolin and silica-fume has been explored; however, no study has modeled and optimized the effect of sisal fiber degradation treatment using calcined bentonite. ... -
Uncovering socioeconomic insights of solar dryers for sustainable agricultural product preservation: A systematic review
(Cellpress, 2024-11-27)This review explores solar dryers' use for agricultural products, focusing on their socioeconomic benefits in the community. Despite significant technical advancements in solar dryers, there is a notable lack of documentation ... -
Solvothermal liquefaction of orange peels into biocrude: An experimental investigation of biocrude yield and energy compositional dependency on process variables
(Elsevier, 2024-01)The efficient valorization of biomass for energy-derived biocrudes is essential for effective waste management. However, the production of biocrudes with high energy and reduced oxygen contents during the liquefaction ... -
Optimization of solvothermal liquefaction of water hyacinth over PTFE-acid mediated kaolin catalyst for enhanced biocrude production
(Elsevier, 2024-03-01)The invasive nature of water hyacinth and the need for renewable energy sources have necessitated this research. Catalyst development through enhanced pore structure and process parameters optimization are requirements for ... -
Optimized Tilted Solar Radiation in Equator Region: Case Study of Seven Climatic Zones in Tanzania
(Shahrood University of Technology, 2024-04-05)This study delves into the ongoing discourse surrounding the optimal tilt angles for solar panels to maximize solar PV power generation. Focused on seven equatorial regions in Tanzania; Dodoma, Dar es Salaam, Kilimanjaro, ... -
Optimal design and analysis of a grid-connected hybrid renewable energy system using HOMER Pro: A case study of Tumbatu Island, Zanzibar
(SCI, 2024-04-04)This study addresses the pressing issue of quality electricity access in remote regions, with a specific focus on Tumbatu Island in Tanzania. Most studies on quality improvement concentrate on low-voltage distribution lines ... -
Design of a Cooling System Integrated with Ultraviolet Light for Preservation of Fruits and Vegetables at Variable Tropical Weather Conditions: A Case Study of Arusha, Tanzania
(AJOL, 2023-09-30)Post-harvest losses of fruits and vegetables pose significant challenges, especially in tropical climates. This study introduces the development and performance evaluation of a solar-powered evaporative cooling storage ... -
Comprehensive Analysis of Fuel Properties of Adansonia digitata Methyl Ester with the Influence of Nanoparticle Additives Extracted from an Agricultural Waste
(Springer Nature Link, 2022-02-06)Purpose This paper reports the results of experimental investigations on the influence of the addition of silica nanoparticles extracted from rice husk (an agricultural waste) on the major physicochemical properties of ... -
Electrosorption of paraquat pesticide on activated carbon modified by aluminium oxide (Al2O3) with capacitive deionization
(Elsevier, 2024-03-01)Composite electrode materials for removing paraquat from contaminated water were synthesized by loading aluminium oxide (Al2O3) onto activated carbon (AC) via co-precipitation method. The composite properties were investigated ... -
Solvothermal liquefaction of orange peels into biocrude: An experimental investigation of biocrude yield and energy compositional dependency on process variables
(Elsevier, 2024-01)The efficient valorization of biomass for energy-derived biocrudes is essential for effective waste management. However, the production of biocrudes with high energy and reduced oxygen contents during the liquefaction ... -
Potential of Canna indica in Constructed Wetlands for Wastewater Treatment: A Review
(MDPI, 2022-08-11)This article reviews investigations in which Canna indica was utilized in constructed wetlands (CW) for wastewater treatment of a variety types. It is strongly urged that ornamental flowering plants be used in CWs as ... -
The effect of Helichrysum shrub encroachment on orchids in a tropical, montane grassland ecosystem, Tanzania
(CSIRO PUBLISHING, 2024-11-08)Context Although shrub encroachment is a common phenomenon in grasslands, which often suppress co-existing herbaceous plants, little is known about how encroaching native shrubs affect endemic and threatened orchid ... -
Sustainable Energy Solutions in Sub-Saharan Africa: Integrating Indigenous Knowledge and Climate Resilience for Lower Carbon Emissions
(Global Academic Journal of Economics and Business, 2024-10)Promoting sustainable energy solutions in sub-Saharan countries is crucial for addressing energy poverty, reducing carbon emissions, and fostering long-term environmental and economic sustainability. This study explored ... -
Macroeconomic Implications of Oil Price Fluctuations: A Simultaneous Equation Analysis of Russia's Economic Performance and Policy Responses
(Global Academic Journal of Economics and Business, 2024-06)This study uses a simultaneous equation model (SEM) to examine the relationship between oil price fluctuations and Russia's macroeconomic performance. It uses a comprehensive set of variables, including GDP growth, investment, ... -
Energy stability and decarbonization in developing countries: Random Forest approach for forecasting of crude oil trade flows and macro indicators
(Frontiers in Environmental Science, 2022-11)The paper observes the dependence of the main macroeconomic indicators in developing countries from the change in world prices for crude oil. We analyzed a system of simultaneous equations, which makes it possible to ... -
Oil price factors : forecasting on the base of modified auto-regressive integrated moving average model
(International Journal of Energy Economics and Policy (IJEEP), 2018-11)The paper proposes modification of auto-regressive integrated moving average model for finding the parameters of estimation and forecasts using exponential smoothing. The study use data Brent crude oil price and gas prices ... -
Application of sustainability indicators for the evaluation and selection of robust organic-rich wastewater treatment technology for resource recovery
(AIMS Press, 2024-10-29)A comparative study was conducted to compare the performance of waste stabilization ponds (WSPs) with an upflow operation type advanced facultative pond integrated with constructed wetland (AFP-CW) technologies. Our aim ...
