Browsing by Title
Now showing items 22858-22877 of 35770
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Multi-mycotoxin exposure of children (0-24 months) in rural maize-subsistence farming areas of the Eastern Cape Province, South Africa
(Wageningen Academic Publishers, 2020)In South Africa, child malnutrition is highly prevalent among children from in rural areas mostly at risk. In the Eastern Cape (EC) Province, maize is commonly used as complementary and weaning food. Previous studies ... -
Multi-mycotoxin exposure of children (0-24 months) in rural maize-subsistence farming areas of the Eastern Cape Province, South Africa.
(Wageningen Academic Publishers, 2020)In South Africa, child malnutrition is highly prevalent among children from in rural areas mostly at risk. In the Eastern Cape (EC) Province, maize is commonly used as complementary and weaning food. Previous studies ... -
Multi-objective genetic algorithms for computing fast fourier transforms over wireless sensor networks
(North-West University (South Africa), 2017)Wireless sensor networks (WSNs) consist of sensor nodes which are geographically distributed with the capacity to communicate and re-organize themselves within the network. Each sensor node possesses wireless communication ... -
A multi-period stochastic programming approach to integrated asset and liability management of investment products with guarantees
(North-West University, 2009)In recent years investment products have become more complex by providing investors with various guarantees and bonus options. This increase in complexity has provided an impetus for the investigation into integrated asset ... -
Multi-point aerodynamic optimisation of sailplane horizontal tailplanes
(North-West University (South Africa) , Potchefstroom Campus, 2015)A new horizontal tailplane for a high performance sailplane was developed through multi-point aerodynamic optimisation. This was achieved through the use of logged flight data, from which the operating spectrum of the ... -
Multi-quadrant performance simulation for subsonic axial flow compressors
(North-West University, 2007)The emergence of closed-loop Brayton cycle power plants, such as the PBMR, resulted in the need to simulate start-up transients for industrial multi-stage axial flow compressors operating at subsonic conditions. This implies ... -
Multi-scale model of a valve-regulated lead-acid battery with electromotive force characterization to investigate irreversible sulphation
(North-West University (South Africa) , Potchefstroom Campus, 2016)Valve-regulated lead-acid (VRLA) batteries are commonly used for energy storage because they are inexpensive and easy to use. Combined with an immobile electrolyte, a VRLA battery has almost no risk of an acid spill. The ... -
Multi-scale study of massive star forming region NGC 6334I/F
(North-West University (South Africa), 2023)This thesis reports an observational multi-scale study of the high-mass star-forming region NGC6334I=F on scales ranging from 10 000 AU down to 1 AU. In 2015, NGC6334I-MM1B started a period of high accretion analogous ... -
Multi-species assessment of South African coal mine reclamation soils for ecosystem recovery
(North-West University (South Africa)North-West University, 2020)At present, there is no comprehensive soil quality assessment practice for the coal mining industry in South Africa. Studies have shown that belowground soil biota are crucial to soil ecosystem functioning and are sensitive ... -
Multi-targeted directed ligands for Alzheimer’s disease: design of novel lead coumarin conjugates
(Taylor & Francis, 2018)Alzheimer’s Disease (AD) is a neurodegenerative disease characterized by central nervous system insults with progressive cognitive (memory, attention) and non-cognitive (anxiety, depression) impairments. Pathophysiological ... -
Multi-TeV emission from the Vela pulsar
(IOP Publishing, 2018)Pulsed emission from the Vela pulsar at energies above 3 TeV has recently been detected by the High Energy Stereoscopic System (H.E.S.S.) Collaboration. We present a model for the broadband spectrum of Vela from infrared ... -
A multi-wavelength approach to solar energetic particle transport using remote sensing and in-situ observations
(North-West University (South Africa), 2022)Space weather (SWx) studies and the development of SWx prediction models have gained significant momentum in the last few years. Large SWx events have the potential to incapacitate technological infrastructure, both on ... -
Multi-wavelength modeling of globular clusters: the millisecond pulsar scenario
(IOP Publishing, 2013)The potentially large number of millisecond pulsars (MSPs) in globular cluster (GC) cores makes these parent objects ideal laboratories for studying the collective properties of an ensemble of MSPs. Such a population is ... -
Multi-wavelength observations of flaring blazars with ATOM and Fermi-LAT
(Sissa Medialab, 2017)The Automatic Telescope for Optical Monitoring is a 75cm optical telescope located at the H.E.S.S. site in Namibia. Since 2005, it monitors around 250 gamma-ray emitting AGN and has observed numerous blazar flares in several ... -
Multi-wavelength observations of H 2356-309
(EDP Sciences, 2010)Aims. The properties of the broad-band emission from the high-frequency peaked BL Lac H 2356–309 (z = 0.165) are investigated. Methods. Very high energy (VHE; E > 100 GeV) observations of H 2356–309 were performed with ... -
A multi-wavelength study of a sample of galaxy clusters
(North-West University, 2012)In this dissertation we aim to perform a multi-wavelength analysis of galaxy clusters. We discuss various methods for clustering in order to determine physical parameters of galaxy clusters required for this type of study. ... -
Multi-wavelength study of flaring activity in BL Lac object S5 0716+714 during the 2015 outburst
(American Astronomical Society, 2015)We present a detailed investigation of the flaring activity observed from a BL Lac object, S5 0716+714 , during its brightest ever optical state in the second half of 2015 January. Observed almost simultaneously in the ... -
Multi-wavelength Study of Radio Galaxies in MeerKAT fields
(North-West University (South Africa), 2023-10)Active galaxies are distinct sub-types of galaxies; their centres, known as Active Galactic Nuclei (AGN), are the brightest and most persistently luminous objects in the cosmos and the AGN core is where the vast majority ... -
A multi-wavelength study on the low-mass stellar populations of the southern high-mass star-forming regions RCW 34 and NGC 2626
(North-West University, 2019)The physical processes of how stars form is well understood and documented. However, the finer details of how high-mass stars (M > 8 Mꙩ) form is not yet fully known. High-mass stars are usually associated with class II ... -
Multi-wavelength variability signatures of relativistic shocks in blazar jets
(IOP Publishing, 2019)Mildly relativistic shocks that are embedded in colliding magnetohydrodynamic flows are prime sites for relativistic particle acceleration and the production of strongly variable, polarized multi-wavelength emission from ...
