• Blue-green water resource availability dynamics in the upper Awash basin, central Ethiopia: implications for agricultural water scarcity assessment 

  Hirpa, Birtukan Abebe; Adane, Girma Berhe; Roh, Minwoo; Song, Cholho; Nedaw, Dessie; Asrat, Asfawossen; Lee, Woo-Kyun (Informa UK Limited, trading as Taylor & Francis Group, 2023-08)

  Quantifying and characterizing the spatial distribution of freshwater availability and water scarcity plays an indispensable role in managing water resources in a basin. This study aimed at quantifying green and blue water ...
• Effects of fragmentation on production at Peak mine Midlands, Zimbabwe 

  Ngoroyemoto, Tapiwa Frank Kwachara; Ashley, Ruvimbo Sabao; Rahul, Verma; Tsidzinye, Tafadzwa; Nyamagudza, Tatenda; Suglo, Raymond (Dr. Jyoti Garg, 2023-08)

  Over the years, the cost of production at Peak Mine Midlands, Zimbabwe, has been high due to oversized rock fragments. This led to increased mining costs far above what was planned by the mine. Initial investigations showed ...
• Recovering phosphorus as struvite from anaerobic digestate of pig manure with ferrochrome slag as a magnesium source 

  Moyo, L.B.; Simate, G.S.; Mamvura, T.A.; Danha, Gwiranai (Elsevier Ltd, 2023-04)

  The circular economy initiative has driven the agriculture and agro-based industry to beneficiate from waste,thus closing the material loop towards enhancing economic and environmental performance. In this study, the aim ...
• Establishment of a hydrometallurgical scheme for the recovery of Copper, Nickel, and Cobalt from Smelter Slag and Its economic evaluation 

  Godirilwe, Labone Lorraine; Haga, Kazutoshi; Altansukh, Batnasan; Jeon, Sanghee; Danha, Gwiranai; Shibayama, Atsushi (MDPI, Basel, Switzerland, 2023-07)

  In pursuit of carbon neutrality, the demand for metals that are necessary for the development of clean energy technologies is rapidly increasing. Metallurgical waste, such as slag, presents a promising secondary source of ...
• Green, blue and economic water productivity: a water footprint perspective from the Upper Awash Basin, Central Ethiopia 

  Hirpa, Birtukan Abebe; Adane, Girma Berhe; Asrat, Asfawossen; Nedaw, Dessie (IWA Publishing, 2023-02)

  The rise in global freshwater consumption, inefficient water use and population growth are the main drivers of water scarcity and food insecurity. This study analyzed the green, blue and economic water productivity (GWP, ...
• Projected changes in meteorological drought over East Africa inferred from bias‑adjusted CMIP6 models 

  Ayugi, Brian; Shilenje, Zablon Weku; Babaousmail, Hassen; Sian, Kenny Lim Kam; Mumo, Richard; Dike, Victor Nnamdi; Iyakaremye, Vedaste; Chehbouni, Abdelghani; Ongoma, Victor (Springer Nature, 2022-04-09)

  The ongoing global warming has caused unprecedented changes in the climate system, leading to an increase in the intensity and frequency of weather and climate extremes. This study uses the sixth phase of Coupled Model ...
• A validated liquid–liquid extraction method for the quantitative analysis of ethanol in the different types of home-brewed alcoholic beverages of Botswana using gas chromatography flame ionization detector 

  Tsenang, Mmaabo; Pheko, Tshepo; Mokgadi, Janes; Phokedi, Gothatamang Norma (The Tunisian Chemical Society and Springer Nature, 2022-10-25)

  Home-made alcohol-related deaths are a significant public health issue which is often overlooked. To date, approxi-mately 30 people have died following the consumption of home brewed alcoholic beverages in Botswana. The ...
• Application of attainable region technique to optimize copper slag’s desired size class 

  Gabasiane, Tlotlo, Solomon; Danha, Gwiranai; Mamvura, Tirivaviri; Mashifana, Tebogo; Sibanda, Vusumuzi (MDPI, Basel, Switzerland, 2022-12-23)

  Copper slag is a hard material produced from smelting copper-bearing ores. Over the years, research has prioritized utilizing slag as a secondary source of base metals. This paper focuses on the grinding/milling of copper ...
• Undergraduate students’ motivation towards the use of electronic resources at Federal College of Education (Technical) Gombe, Nigeria 

  Liman, Yakubu, Attahiru; Rasegojwa, Maleshane, Gladys; Muhammad, Jika Saidu (Credence Press Limited, 2022-03-09)

  The purpose of this study is to examine undergraduate students’ motivation towards the use of electronic resources at Federal College of Education (Technical), Gombe. The objectives of the study include: to determine the ...
• Analysis and optimization of auto-correlation based frequency offset estimation 

  Ngebani, I.M.; Chuma, Joseph Monamati; Masupe, S. (South Africa Institute of Electrical Engineers, 2015-09)

  In this letter, a general auto-correlation based frequency offset estimation (FOE) algorithm is analyzed. An approximate closed-form expression for the Mean Square Error (MSE) of the FOE is obtained, and it is proved that, ...
• A surface photovoltage study of surface defects on Co-doped TiO2 thin films deposited by spray pyrolysis 

  Wafula, Henry; Juma, Albert; Sakwa, Thomas; Musembi, Robinson; Simiyu, Justus (2016-07-22)

  Surface photovoltage (SPV) spectroscopy is a powerful tool for studying electronic defects on semiconductor surfaces, at interfaces, and in bulk for a wide range of materials. Undoped and Cobalt-doped TiO 2 (CTO) thin films ...
• Hydrogeochemical evaluation of groundwater quality in Dukwi wellfield in Botswana 

  Diphofu, Abijah; Yendaw, Jerome A.; Suglo, Raymond S. (International Journal of Innovation Creativity and Change (herein referred to as ‘IJICC’), 2022)

  There has been a decline in groundwater quality in most wellfields in Botswana. This study evaluated the groundwater quality in Dukwi Wellfield for drinking and irrigation purposes and characterised the dominant hydrochemical ...
• A concealed based approach for secure transmission in advanced metering infrastructure 

  Kebotogetse, Otisitswe; Samikannu, Ravi; Yahya, Abid (Institute of Electrical and Electronics Engineers (IEEE), 2022-08-17)

  The smart grid has an important subsystem known as the Advanced Metering Infrastructure (AMI), responsible for measuring customer consumption of electricity. The AMI subsystem has smart meters as one of the components and ...
• Terrestrial free space optical communication systems availability based on meteorological visibility data for South Africa 

  Kolawole, Olabamidele O.; Afullo, Thomas J.O.; Mosalaosi, Modisa (South African Institute of Electrical Engineers (SAIEE Africa Research Journal), 2022-03)

  In spite of the numerous advantages of employing free space optical (FSO) communication systems as viable complementary platforms for next-generation networks, the presence of atmospheric disturbances such as fog and ...
• Image compression techniques in wireless sensor networks: a survey and comparison 

  Lungisani, Bose A.; Lebekwe, Caspar K.; Zungeru, Adamu Murtala; Yahya, Abid (Institute of Electrical and Electronics Engineers (IEEE), 2022-08-10)

  There is continuous intensive research on image compression techniques in wireless sensor networks (WSNs) in the literature. Some of the image compression techniques in WSNs that exist in the literature include discrete ...
• Fuzzy logic control for solar PV fed modular multilevel inverter towards marine water pumping applications 

  Stonier, Albert Alexander; Murugesan, Srinivasan; Samikannu, Ravi; Krishnamoorthy, Vinoth; Subburaj, Senthil Kumar; Chinnaraj, Gnanavel; Mani, Geetha (Institute of Electrical and Electronics Engineers (IEEE), 2021-06-28)

  This paper presents the design and implementation of Modular Multilevel Inverter (MMI) to control the Induction Motor (IM) drive using intelligent techniques towards marine water pumping applications. The proposed inverter ...
• Power quality improvement in solar fed cascaded multilevel inverter with output voltage regulation techniques 

  Stonier, Albert Alexander; Murugesan, Srinivasan; Samikannu, Ravi; Venkatachary, Sampath Kumar; Kumar, Senthil S.; Arumugam, Prakash (Institute of Electrical and Electronics Engineers (IEEE), 2020-09-29)

  The presence of harmonics in solar Photo Voltaic (PV) energy conversion system results in deterioration of power quality. To address such issue, this paper aims to investigate the elimination of harmonics in a solar fed ...
• Investigation on impact of magnetic field on the corona discharge activity in Punga oil using fluorescent fiber and UHF sensor techniques 

  Murugesan, Srinivasan; Amalanathan, Arputhasamy Joseph; Sarathi, Ramanujam; Srinivasan, Balaji; Samikannu, Ravi (Institute of Electrical and Electronics Engineers (IEEE), 2021-09-16)

  This paper reports the experimental investigation of the corona discharge activity of punga oil under the influence of a local magnetic field and different voltage profiles (AC and DC voltages) using fluorescent fiber ...
• Generation and composition of municipal solid waste: case study, extension 7, Palapye, Botswana 

  Letshwenyo, Moatlhodi Wise; Kgetseyamore, Dirang (Springer Nature Limited, 2020-09-10)

  The rapid population growth and industrialisation has contributed to the production of large quantities of solid wastes that should be managed properly. This study was conducted to investigate the generation and composition ...
• Carbonate-silicate inclusions in garnet as evidence for a carbonate-bearing source for fluids in leucocratic granitoids associated with granulites of the Southern Marginal Zone, Limpopo Complex, South Africa 

  Safonov, O.G.; Mityaev, A.S.; Yapaskurt, V.O.; Belyanin, G.A.; Elburg, M.; Rajesh, H.M.; Golunova, M.A.; Shcherbakov, V.D.; Butvina, V.G.; van Reenen, D.D.; Smit, C.A. (Elsevier B.V., 2020-01)

  We present a study of carbonate-bearing polyphase inclusions in garnets from leucocratic granitoids intruding metapelitic granulites of the Southern Marginal Zone (SMZ) of the Neoarchean Limpopo high-grade complex, South ...

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