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Browsing Research Articles by Title

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  • Network capacity enhancement in HetNets using incentivized offloading mechanism 
    Basutli, Bokamoso; Chuma, Joseph; Lambotharan, Sangarapillai (IEEE, 2018-08)
    This paper investigates distributed algorithms for joint power allocation and user association in heterogeneous networks. We propose auction-based algorithms for offloading macrocell users (MUs) from the macrocell base ...
  • Neuronal firing and DNA dynamics in a neural network 
    Etémé, Armand Sylvin; Tabi, Conrad Bertrand; Ateba, Jean Felix Beyala; Ekobena, Henri Paul Fouda; Mohamadou, Alidou; Kofane, Timoléon Crepin (IOP Publishing Ltd, 2018-12-18)
    We study the mutual effects of neuronal electrical activity and DNA dynamics in a network of electrically coupled neurons with nearest neighbors communication. For that we develop by means of the coupling function method, ...
  • A new Lindley-Burr XII power series distribution: model, properties and applications 
    Makubate, Boikanyo; Gabanakgosi, Morongwa; Chipepa, Fastel; Oluyede, Broderick (Elsevier, 2021-06)
    A new generalized class of distributions called the Lindley-Burr XII Power Series (LBXIIPS) distribution is proposed and explored. This new class of distributions contain some special cases such as Lindley-Burr XII Poisson ...
  • The new paradox of dual modality X-Ray diamond sorting 
    Modise, Ernest Gomolemo; Zungeru, Adamu Murtala; Chuma, Joseph; Prabaharan, S.R.S.; Mtengi, Bokani; Ude, Albert Uchenna; Nedev, Zhivko (IEEE, 2021-06)
    Modern-day diamond sorting is achieved through the application of X-ray lumi- nescence (XRL) and X-ray transmission (XRT) techniques. Sorting with XRL is limited to the class range of 1.25 mm to 32 mm because of self-absorption ...
  • A novel moderately thermophilic type Ib methanotroph isolated from an alkaline thermal spring in the Ethiopian Rift Valley 
    Islam, Tajul; Gessesse, Amare; Garcia-Moyano, Antonio; Murrel, Colin; Øvreås, Lise (Multidisciplinary Digital Publishing Institute, 2020-02-13)
    Aerobic moderately thermophilic and thermophilic methane-oxidizing bacteria make a substantial contribution in the control of global warming through biological reduction of methane emissions and have a unique capability ...
  • Optical properties of bimetallic (SrO-K2O) nanofillers 
    Ayeleru, Olusola Olaitan; Dlova, Sisanda; Ntuli, Freeman; Kupolati, Williams Kehinde; Olubambi, Peter Apata (Elsevier B.V., 2019-04)
    In this study, bimetallic nanofiller capable of usage as reinforcement was synthesized from expanded polystyrene (EPS). Bimetallic materials consist of two different metals. The bimetallic nanofiller consisting of SrO and ...
  • Optimal control of the spread of meningitis: in the presence of behaviour change of the society and information dependent vaccination 
    Workineh, Yetwale Hailu; Kassa, Semu Mitiku (SCIK Publishing Corporation, 2021-04-05)
    A mathematical model of meningococcal meningitis with incidence dependent self-protection measure and vaccination is formulated and analysed. The vaccination considered is assumed to be given to everyone and is information ...
  • Optimal control strategy for TB-HIV/AIDS co-infection model in the presence of behaviour modification 
    Awoke, Temesgen Debas; Kassa, Semu Mitiku (MDPI AG, 2018-05-01)
    A mathematical model for a transmission of TB-HIV/AIDS co-infection that incorporates prevalence dependent behaviour change in the population and treatment for the infected (and infectious) class is formulated and analyzed. ...
  • Optimisation of using a blend of plant based natural and synthetic coagulants for water treatment: (Moringa Oleifera-Cactus Opuntia-alum blend) 
    Gandiwa, Bruce I.; Moyo, Langa Bright; Ncube, Sokesimbone; Mamvura, Tirivaviri Augustine; Mguni, Liberty Lungisani; Hlabangana, Nkosikhona (Elsevier B.V., 2020-10)
    The research presents a comparative study on the effectiveness of blending plant based natural coagulants (Cactus Opuntia and Moringa Oleifera extracts) and a synthetic coagulant (aluminium sulphate or alum) in treatment ...
  • Optimizing yield and quality of bio-oil: a comparative study of Acacia tortilis and Pine dust 
    Charis, Gratitude; Danha, Gwiranai; Muzenda, Edison (MDPI (Basel, Switzerland), 2020-05)
    We collected pine dust and Acacia tortilis samples from Zimbabwe and Botswana, respectively. We then pyrolyzed them in a bench-scale plant under varying conditions. This investigation aimed to determine an optimum ...
  • Orbital controls on eastern African hydroclimate in the Pleistocene 
    Lupien, Rachel L; Russell, James M; Pearson, Emma J; Castañeda, Isla S; Asrat, Asfawossen; Foerster, Verena; Lamb, Henry F; Roberts, Helen M; Schäbitz, Frank; Trauth, Martin H; Beck, Catherine C; Feibel, Craig S; Cohen, Andrew S (Springer Nature Limited, 2022-02-24)
    Understanding eastern African paleoclimate is critical for contextualizing early human evolution, adaptation, and dispersal, yet Pleistocene climate of this region and its governing mechanisms remain poorly understood due ...
  • An overview of plastic waste generation and management in food packaging industries 
    Ncube, Lindani Koketso; Ude, Albert Uchenna; Ogunmuyiwa, Enoch Nfise; Zulkifli, Rozli; Beas, Isaac Nongwe (MDPI (Basel.Switzerland), 2021-02-12)
    Over the years, the world was not paying strict attention to the impact of rapid growth in plastic use. This has led to unprecedented amounts of mixed types of plastic waste entering the environment unmanaged. Packaging ...
  • Performance evaluation of waste stabilisation ponds 
    Gopolang, Obenne Pearl; Letshwenyo, Moatlhodi Wise (Scientific Research Publishing Inc., 2018-11)
    Waste stabilisation pond system has been used more especially in developing countries for sewage treatment. The objective of this study was to investigate the hydraulic and performance efficiency of Palapye waste stabilisation ...
  • Phosphorus removal from secondary wastewater effluent using copper smelter slag 
    Letshwenyo, Moatlhodi Wise; Sima, Thandie Veronicah (Elsevier B.V., 2020-06)
    This study investigated the use of copper smelter slag for the removal of phosphorus from secondary wastewater effluent through batch tests. The media was physically and chemically characterized and showed presence of Fe2O3 ...
  • A phytolith supported biosphere-hydrosphere predictive model for southern Ethiopia: insights into paleoenvironmental changes and human landscape preferences since the last glacial maximum 
    Fischer, Markus L.; Bachofer, Felix; Yost, Chad L.; Bludau, Ines J. E.; Schepers, Christian; Foerster, Verena; Lamb, Henry; Schäbitz, Frank; Asrat, Asfawossen; Trauth, Martin H.; Junginger, Annett (MDPI, 2021-10-08)
    During the past 25 ka, southern Ethiopia has undergone tremendous climatic changes, from dry and relatively cold during the Last Glacial Maximum (LGM, 25–18 ka) to the African Humid Period (AHP, 15–5 ka), and back to ...
  • Plant-made HIV vaccines and potential candidates 
    Tremouillaux-Guiller, Jocelyne; Moustafa, Khaled; Hefferon, Kathleen; Gaobotse, Goabaone; Makhzoum, Abdullah (Current Opinion in Biotechnology, 2020-02)
    Millions of people around the world suffer from heavy social and health burdens related to HIV/AIDS and its associated opportunistic infections. To reduce these burdens, preventive and therapeutic vaccines are required. ...
  • Pollution risk from Pb towards vegetation growing in and around shooting ranges – a review 
    Dinake, Pogisego; Mokgosi, Serwalo Mercy; Kelebemang, Rosemary; Kereeditse, Tsotlhe Trinity; Motswetla, Obakeng (Taylor and Francis Group, 2021-05-05)
    Commissioned and de-commissioned shooting ranges continue to pose an environmental and human health risk due to the accumulation of toxic Pb emanating from spent munitions. The phytotoxic effects of Pb accumulation in ...
  • Pollution status of shooting range soils from Cd, Cu, Mn, Ni and Zn found in ammunition 
    Dinake, Pogisego; Maphane, Onneetse; Sebogisi, Karabo; Kamwi, Obed (Taylor and Francis Group, 2018-09-18)
    Evaluation of concentration of heavy metals found in shooting range soil is important in assessing the pollution risk posed to biota. Soil samples from five shooting ranges found in Botswana were used in this study. All ...
  • The potency of monoethanolamine in biogas purification and upgrading 
    Maile, Olivia Ireen; Tesfagiorgis, Habtom; Muzenda, Edison (Institution of Chemical Engineers ,Published by Elsevier, 2017-12)
    Biogas has been exploited as one of the alternative sources of renewable energy having the potential to replace fossil fuels. It contains impurities when raw, as it consists of 50e70% methane (CH4), 30e50% carbon dioxide ...
  • Potential for treating sewage wastewater using sewage sludge biochar 
    Manyuchi, Musaida Mercy; Mbohwa, Charles; Muzenda, Edison (Covenant Journal of Physical and Life Sciences, 2018-03)
    In this study, activated biochar from municipal sewage sludge was used for the treatment of sewage water. The sewage physicochemical parameters were measured before and after bio filtration with biochar applying the principle ...

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