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Now showing items 127-146 of 231

Lateral crashworthiness response of bombyx mori fibre/glass–fibre/epoxy hybrid composite cylindrical tubes-experimental

Ude, Albert Uchenna; Azhari, Che Husna (AIMS Press, 2019-12)

Experimental studies were undertaken to investigate the effect of reinforced fibre hybridization on the crushing characteristics of quasi-static laterally compressed cylindrical composite tubes. Woven glass fibre (GF) and ...
Lead pollution of shooting range soils

Sehube, Nicholas; Kelebemang, Rosemary; Totolo, Otlogetswe; Laetsang, Masego; Kamwi, Obed; Dinake, Pogisego (South African Chemical Institute (SACI), 2017)

A total of eight military shooting ranges were used for this study. Soil samples were collected at each of the eight shooting ranges at the berm, target line, 50 and 100 m from berm. In all of the shooting ranges investigated ...
Link between migration status and occupational health and safety of Filipino migrant workers in South Korea

Amit, Lito M.; Ultra Jr, Venecio U.; Song, Young Woong (Philippine Journal of Science, 2020-06)

With its offer of competitive compensation and attractive employment permit system (EPS), South Korea has recently experienced an influx of migrant workers. There has been a concomitant rise in the concerns about the health ...
Long-range memory effects in a magnetized Hindmarsh-Rose neural network

Etémé, Armand Sylvin; Tabi, Conrad Bertrand; Mohamadou, Alidou; Kofané, Timoléon Crepin (Elsevier, 2020-01-28)

We consider a model network of diffusively coupled Hindmarsh-Rose neurons to study both analytically and numerically, long-range memory effects on the modulational instability phenomenon, chaotic, synchronous and chimera ...
LoRa network planning and deployment: a terrestrial navigation application

Kolobe, Lone; Lebekwe, Caspar K.; Sigweni, Boyce (IEEE, 2021-09-20)

Long Range (LoRa) is a popular low power wide area network (LPWAN) technology which operates in the Industrial, Scientiﬁc and Medical (ISM) frequency band transmitting information over ranges in excess of 20 km and 5 km ...
Loss-tolerant prepare and measure quantum key distribution protocol

Mafu, Mhlambululi; Sekga, Comfort; Senekane, Makhamisa (Elsevier B.V. on behalf of African Institute of Mathematical Sciences, 2021-11-07)

We propose a modified version of the Bennett–Brassard 1984 quantum key distribution protocol intended to tolerate losses, certain forms of noise, and the so-called photon number splitting attack. These are the issues ...
Magnetic field effect on a fractionalized blood flow model in the presence of magnetic particles and thermal radiations

Tabi, Conrad Bertrand; Ndjawa, Pavel A. Y.; Motsumi, Teko Ganakgomo; Bansi, Kamdem C. D.; Kofané, Timoléon Crepin (Elsevier, 2019-11-28)

The presence of magnetic particles is considered in a magneto-hydrodynamic blood flow through a circular cylinder. The fluid inside the tube is acted by an oscillating pressure gradient and an external constant magnetic ...
Manufacture of fly ash based coagulants for use in water treatment

Maila, Goitseone Baby; Ntuli, Freeman; Lekgoba, Tumeletso (: The Mattingley Publishing Co., Inc, 2020-01)

Fly ash was explored as a raw material for the production of three fly ash-based coagulants being raw, calcined and calcined– sodium hydroxide complex coagulants. Calcined fly ash and calcined fly ash – sodium hydroxide ...
Masamu program, a US-Africa partnership

Jenda, Overtoun; Lungu, Edward (American Mathematical Society, 2021-02)

The primary goal of the Masamu (note that “masamu” means mathematics in Southern Africa) Program is to enhance research in the mathematical sciences and related areas within the Southern Africa Mathematical ...
A Mathematical model of contact tracing during the 2014–2016 West African Ebola outbreak

Burton, Danielle; Lenhart, Suzanne; Edholm, Christina; Levy, Benjamin; Washington, Michael; Greening, Bradford Jr.; White, Jane; Lungu, Edward; Chimbola, Obias; Kgosimore, Moatlhodi; Chirove, Faraimunashe; Ronoh, Marilyn; Machingauta, Helen (MDPI AG, 2021-03-12)

The 2014–2016 West African outbreak of Ebola Virus Disease (EVD) was the largest and most deadly to date. Contact tracing, following up those who may have been infected through contact with an infected individual to prevent ...
Metallo-Drugs as promising antibacterial agents and their modes of action

Nareetsile, Florence; Matshwele, James T.P; Odisitse, Sebusi (Sami Publishing Company, 2022-05)

Antibiotic resistance has been a growing worldwide public health issue. The World Health Organization (WHO) has stated that the search for new antibiotics is slow, while antibiotic resistance is growing. WHO has also ...
Meteorological influence on eLoran accuracy

Lebekwe, Caspar K.; Zungeru, Adamu Murtala; Astin, Ivan (IEEE, 2021-12-14)

Stringent accuracy requirements need to be met for eLoran deployment in marine navigation and harbour entrance and approach. A good accuracy model is therefore required to predict the positioning accuracy at the user’s ...
Methanol synthesis chemistry and process engineering aspects: a review with consequence to Botswana chemical industries

Balopi, Babusi; Agachi, Paul Serban; Danha, Gwiranai (Elsevier B.V., 2019)

In a highly competitive world of commercial production of methanol, it is critical to understand and get methanol (CH3OH) synthesis chemistry and process engineering aspects of methanol production correctly. Methanol ...
Microbial and chemical diversity of traditional non-cereal based alcoholic beverages of Sub-Saharan Africa

Motlhanka, Koketso; Zhou, Nerve; Lebani, Kebaneilwe (MDPI, 2018-05-01)

Fermentation remains an important food preparation technique of health, cultural and economic importance throughout the world. In Sub-Saharan Africa, traditional alcoholic fermentation of cereal and non-cereal based ...
Mineralogy and geochemistry of the Ngaoundaba Crater Lake sediments, northern Cameroon: implications for provenance and trace metals status

Bessa, Armel Zacharie Ekoa; Armstrong-Altrin, John S; Fuh, Gentry Calistus; Bineli-Betsi, Thierry Olivier; Kelepile, Tebogo; Ndjigui, Paul-Desire (Springer Link, 2021-03-18)

This study was conducted on the Ngaoundaba Crater Lake sediments to infer provenance, weathering conditions, organic matter accumulation, and trace metal concentrations. Ngaoundaba Lake sediments were collected using a ...
Mixed layer sub-tropical clayey soil-AMD percolation: analysis of permeation limits and breakthrough patterns

Agbenyeku, Emmanuel Emem; Muzenda, Edison (Elsevier B.V., 2019)

The increasing population growth, depletion of natural recourses from mining and similar activities, and consequent insistent climate change have triggered diverse environmental challenges. It is well known that acid mine ...
Modeling a sustainable, self-energized Pine Dust Pyrolysis system with staged condensation for optimal recovery of bio-Oil

Charis, Gratitude; Danha, Gwiranai; Muzenda, Edison; Nhubu, Trust (Frontiers Media, 2021-02-04)

This simulation study explores sustainable improvements that could be made to a pine dust pyrolysis system to eliminate total dependence on external electrical energy supply and improve the yield of high-quality dry bio-oil. ...
Modeling the effects of information-dependent vaccination behavior on meningitis transmission

Buonomo, Bruno; d'Onofrio, Alberto; Kassa, Semu Mitiku; Workineh, Yetwale Hailu (Wiley, 2021-08-21)

We propose a mathematical model to investigate the effects of information–dependent vaccination behavior on meningitis transmission. The information is represented by means of information index as early proposed by d'Onofrio ...
Modelling Covid-19 mitigation and control strategies in the presence of migration and vaccination: the case of South Africa

Kassa, Semu Mityiku; Njagarah, John Boscoh Hatson; Terefe, Yibeltal Adane (African Mathematical Union and Springer-Verlag GmbH Deutschland, ein Teil von Springer Natu, 2021-05-14)

The novel coronavirus disease has ravaged many health systems around the world and has brought many economies to their knees. In the absence of an approved curing medicine or approved vaccine to date, the major control of ...
Multi-parametric approach for multilevel multi-leader-multi-follower games using equivalent reformulations

Zewde, Addis Belete; Kassa, Semu Mityiku (SCIK Publishing Corporation, 2021)

Multilevel multi-leader multi-follower games address compromises among multiple interacting decision agents within a hierarchical system in which multiple followers are involved at each lower-level unit and more than one ...

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