Browsing Faculty of Natural Sciences by Title
Now showing items 1478-1497 of 2571
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MIGHTEE: Total intensity radio continuum imaging and the COSMOS/XMM-LSS Early Science fields
(University of the Western Cape, 2022)MIGHTEE is a galaxy evolution survey using simultaneous radio continuum, spectropolarimetry, and spectral line observations from the South African MeerKAT telescope. When complete, the survey will image ∼20 deg2 over the ... -
Mind the gap: Science and engineering education at the secondary–tertiary interface
(Academy of Science of South Africa, 2013)In the South African higher education sector, there is increasing concern about the poor retention and throughput rates of undergraduate students. There is also concern that the participation rates in higher education, ... -
Mining mini-halos with MeerKAT I. Calibration and imaging
(Oxford University Press, 2023)Radio mini-halos are clouds of diffuse, low-surface brightness synchrotron emission that surround the Brightest Cluster Galaxy (BCG) in massive cool-core galaxy clusters. In this paper, we use third generation calibration ... -
Mining the Herschel-Astrophysical Terahertz Large Area Survey: submillimetre-selected blazars in equatorial fields
(Oxford University Press, 2013)The Herschel-Astrophysical Terahertz Large Area Survey (H-ATLAS) provides an unprecedented opportunity to search for blazars at sub-mm wavelengths. We cross-matched the Faint Images of the Radio Sky at Twenty-cm (FIRST) ... -
Mixed-halide perovskites solar cells through PbICl and PbCl2 precursor films by sequential chemical vapor deposition
(Elsevier, 2021)Mixed halide perovskites with chlorine (Cl) content have received significant interest due to better charge transport properties and longer diffusion length compared to pure iodine-based perovskites. The superior properties ... -
A mixed-methods study exploring women’s perceptions of terminology surrounding fertility and menstrual regulation in Côte d’Ivoire and Nigeria
(BMC, 2021)Women use various terms when discussing the management of their fertility and menstrual irregularities and may interpret the experience of ending a possible pregnancy in nuanced ways, especially when their pregnancy status ... -
Mn nanoparticles encapsulated within mesoporous helical n-doped carbon nanotubes as highly active air cathode for zinc–air batterie
(Wiley Online Library, 2019)The practical application of clean energy conversion and storage technologies, such as fuel cells and metal–air batteries, have been significantly impeded by the high cost and scarcity of precious metal catalysts used for ... -
Mobile Communication Tools for a South African Deaf patient in a pharmacy context
(IIMC International Information Management Corporation, 2012)This paper presents a case for iterative community-based co-design to facilitate the emergence of an innovative mobile system to address a potentially life-threatening scenario for Deaf people in South Africa. For Deaf ... -
A mobile Deaf-to-hearing communication aid for medical diagnosis
(Telkom, 2010)This paper describes how a deaf to hearing communication aid built for a mobile phone can be used to provide semi-synchronous communication between a Deaf person and a hearing person who cannot sign. Deaf people with access ... -
A mobile platform traffic generator for network performance evaluation
(Telkom, 2013)This work in progress paper presents an overview of the development of an efficient and accurate mobile traffic generator based on an open source computer-based traffic generator software. A high performance mobile traffic ... -
A mobile survey for collecting data from deaf people who use sign language for communication
(Institute of Electrical and Electronics Engineers Inc, 2021)Hearing researchers and practitioners might have encountered challenges in collecting data from Deaf people who mainly rely on sign language for communication. This could be due to language barriers and the non-user-friendly ... -
Mobile vertical handover between infrastructure and ad hoc Wi-Fi networks
(Telkom, 2011)This paper addresses mobility management issues in an environment with both wireless LAN and wireless mesh networks. We first examine wireless mesh network client side transparency within mesh mobility management protocols ... -
Mobile video comparison to help Deaf people make informed choices: a South African case study with provincial data
(IIMC International Information Management Corporation, 2018)Deaf people use sign language to communicate and use mobile video calling to communicate with one another. Mobile video utilises much more bandwidth than text and voice communication modes, resulting in higher expenditure ... -
A Mobile-Health Information Access System
(Telkom, 2013)Patients using the Mobile-Health Information System can send SMS requests to a Frequently Asked Questions (FAQ) web server with the expectation of receiving an appropriate feedback on issues that relate to their health. ... -
A model for control of HIV/AIDS with parental care
(World Scientific Publishing, 2013)In this study we investigate the HIV/AIDS epidemic in a population which experiences a significant flow of immigrants. We derive and analyze a mathematical model that describes the dynamics of HIV infection among the ... -
Model of compact star with ordinary and darkmatter
(Springer Nature, 2020)We study compact stars formed by dark and ordinary matter, with attributes of both neutron star matter and quark star matter. We assume an equation of state for dark matter which is consistent with the rotational ... -
A model of HIV/AIDS population dynamics including ARV treatment and pre-exposure prophylaxis
(SpringerOpen, 2018)Antiretroviral treatment (ART) and oral pre-exposure prophylaxis (PrEP) have recently been used efficiently in management of HIV infection. Pre-exposure prophylaxis consists in the use of an antiretroviral medication to ... -
A model of malaria population dynamics with migrants
(Mathematical Biosciences and Engineering, 2021-08)We present a compartmental model in ordinary differential equations of malaria disease transmission, accommodating the effect of indoor residual spraying on the vector population. The model allows for influx of infected ... -
A model of population dynamics of TB in a prison system and application to South Africa
(BioMed Central, 2017)BACKGROUND: Tuberculosis (TB) continues to spread in South African prisons in particular, as prisons are over-capacitated and have poor ventilation. The awaiting trial detainees are not screened on admission and are at ... -
Model-independent constraints on dark energy and modified gravity with the SKA
(Proceedings of Science, 2014)Employing a nonparametric approach of the principal component analysis (PCA), we forecast the future constraint on the equation of state w(z) of dark energy, and on the effective Newton constant m(k; z), which parameterise ...