Browsing Faculty of Natural Sciences by Title
Now showing items 1399-1418 of 2571
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Match injury incidence during the Super Rugby tournament is high: a prospective cohort study over five seasons involving 93 641 player-hours
(BMJ Publishing Group, 2018)OBJECTIVES: To determine the incidence and nature of injuries in the Super Rugby tournament over a 5-year period. METHODS: 482 male professional rugby union players from six South African teams participating in the ... -
Materials for hydrogen-based energy storage - past, recent progress and future outlook
(Elsevier, 2020)Globally, the accelerating use of renewable energy sources, enabled by increased efficiencies and reduced costs, and driven by the need to mitigate the effects of climate change, has significantly increased research in ... -
Materials, components, assembly and performance of flexible polymer electrolyte membrane fuel cell: A review
(Elsevier, 2023)With emerging demand of potable and wearable electronic devices, reliable and flexible energy suppliers are inevitable. Polymer electrolyte membrane fuel cells (PEMFCs) attract great attention due to high energy density and ... -
Maternal and Neonatal Group B Streptococcus colonisation in a cohort of Libyan women
(2021-01-18)Background: Group B streptococcus (GBS) may be vertically transmitted from mother to infant during labour and cause life threatening neonatal sepsis. The objective of this study was to determine the risk and prevalence ... -
Maternal mental health and infant neurodevelopment at 6 months in a low-income South African cohort
(Infant Mental Health Journal, 2022)Maternal mental health disorders and the adverse consequences for infant neurodevelopment have received substantial research attention in high-income countries over the past five decades. In Africa, where relatively little ... -
Maternal mortality in Burkina Faso: a method from population census 2006
(Tehran University of Medical Sciences, 2013)Background: Estimating maternal mortality level is constantly challenging researchers and planners both in rich and poor countries. In developing countries, particularly in Burkina Faso where the registration system is not ... -
Mathematical analysis and numerical simulation of a tumor-host model with chemotherapy application
(Communications in Mathematical Biology and Neuroscience, 2018)In this paper, a system of non-linear quasi-parabolic partial differential system, modeling the chemotherapy application of spatial tumor-host interaction is considered. At some certain parameters, we derive the steady ... -
Mathematical analysis and numerical simulation of a tumor-host model with chemotherapy application
(Tianjin Polytechnic University, 2018)In this paper, a system of non-linear quasi-parabolic partial differential system, modeling the chemotherapy application of spatial tumor-host interaction is considered. At some certain parameters, we derive the steady state ... -
Mathematical analysis of TB model with vaccination and saturated incidence rate
(Hindawi, 2020)The model system of ordinary differential equations considers two classes of latently infected individuals, with different risk of becoming infectious. The system has positive solutions. By constructing a Lyapunov function, ... -
Mathematical modeling and impact analysis of the use of COVID alert SA app
(AIMS Press, 2022)The human life-threatening novel Severe Acute Respiratory Syndrome Corona-virus-2 (SARS-CoV-2) has lasted for over a year escalating and posing simultaneous anxiety day-by-day globally since its first report in the late ... -
Mathematical study of transmission dynamics of SARS-CoV-2 with waning immunity
(AIMS Press, 2022)The aim of this work is to provide a new mathematical model that studies transmission dynamics of Coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The model ... -
Maths4Stats: Opleiding vir onderwysers
(AOSIS, 2013)Maths4Stats: Educating teachers. The inadequate nature of the education infrastructure in South Africa has led to poor academic performance at public schools. Problems within schools such as under-qualified teachers and ... -
Matrimony relations and business in a fishing migrant community (periphery of Pointe-Noire, Congo-Brazzaville)
(l'Association des amis de la Revue de Géographie de Lyon, 2013)This paper examines the entrepreneurial activities of female migrants in the informal artisanal fishing sector along the coastal line of Congo-Brazzaville. It shows the extent to which these women have achieved an insertion ... -
Matter bispectrum in cubic Galileon cosmologies
(IOP Science, 2013)In this paper we obtain the bispectrum of dark matter density perturbations in the frame of covariant cubic Galileon theories. This result is obtained by means of a semi- analytic approach to second-order perturbations ... -
Maximum sprite streamer luminosity near the stratopause
(AGU Advances, 2019)Sprites are composed of numerous streamers which exhibit transient luminosities in the upper middle atmosphere above thunderclouds after initiation by an intense positive lightning discharge, often followed by lightning ... -
Measurement and analysis of nuclear γ-ray production cross sections in proton interactions with Mg, Si, and Fe nuclei abundant in astrophysical sites over the incident energy range E = 30–66 MeV
(American Physical Society, 2020)The modeling of nuclear γ -ray line emission induced by highly accelerated particles in astrophysical sites (e.g., solar flares, the gas and dust in the inner galaxy) and the comparison with observed emissions from these ... -
Measurement of the evolving galaxy luminosity and mass function using clustering-based redshift inference
(Monthly Notices of the Royal Astronomical Society, 2023)We develop a framework for using clustering-based redshift inference (cluster-z ) to measure the evolving galaxy luminosity function (GLF) and galaxy stellar mass function (GSMF) using Wide-field Infrared Survey Explorer ... -
Measurements of one-point statistics in 21-cm intensity maps via foreground avoidance strategy
(Oxford University Press, 2022)Measurements of the one-point probability distribution function and higher-order moments (variance, skewness, and kurtosis) of the high-redshift 21-cm fluctuations are among the most directstatistical probes of the ... -
Measurements of the angular momentum–mass relations in the Simba simulation
(New Astronomy, 2023)We present measurements of the specific angular momentum content (𝑗) of galaxies drawn from the Simba cosmological hydrodynamic simulations. These relations are broadly consistent with a variety of empirical measurements. ... -
Measuring lensing ratios with future cosmological surveys
(American Physical Society, 2020)The ratio between the CMB lensing/galaxy counts and the galaxy shear/galaxy counts cross-correlations combines the information from different cosmological probes to infer cosmographic measurements that are less dependent ...