Browsing Faculty of Natural Sciences by Title
Now showing items 1321-1340 of 2567
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K-CLASH: spatially resolving star-forming galaxies in field and cluster environments at z ≈ 0.2–0.6
(Oxford University Press, 2020)We present the KMOS-CLASH (K-CLASH) survey, a K-band Multi-Object Spectrograph (KMOS) survey, of the spatially resolved gas properties and kinematics of 191 (pre-dominantly blue) H α-detected galaxies at 0.2 ≲ z ≲ 0.6 in ... -
K-CLASH: Strangulation and ram pressure stripping in galaxy cluster members at 0.3 < z < 0.6
(Oxford University Press, 2020-06-26)Galaxy clusters have long been theorized to quench the star formation of their members. This study uses integral-field unit observations from the K-band MultiObject Spectrograph (KMOS) – Cluster Lensing And Supernova ... -
K21 compound, a potent antifungal agent: Implications for the treatment of fluconazole-resistant HIV-associated Candida species
(Frontiers, 2019-05-24)Background/objectives: With mucocutaneous candidiasis being highly prevalent in HIV patients, the emergence of fluconazole-resistant Candida species forms a major challenge in treating and eradicating these infections. The ... -
Kaoss: turbulent, but disc-like kinematics in dust-obscured star-forming galaxies at z ∼ 1.3–2.6
(Oxford University Press, 2024)We present spatially resolved kinematics of 27 ALMA-identified dust-obscured star-forming galaxies (DSFGs) at z ∼ 1.3–2.6, as traced by Hα emission using VLT/KMOS near-infrared integral field spectroscopy from the ‘KMOS-ALMA ... -
The Karl G. Jansky Very Large Array Sky Survey (VLASS). Science Case and Survey Design
(The Astronomical Society of the Pacific, 2020)The Very Large Array Sky Survey (VLASS) is a synoptic, all-sky radio sky survey with a unique combination of high angular resolution (≈2 5), sensitivity (a 1σ goal of 70 μJy/beam in the coadded data), full linear ... -
Keep the flow: Citizen science as agonistic learning
(Ubiquity Press, 2023)This paper addresses the transformative and emancipatory potential of citizen science not only concerning its role in groundwater management, but also regarding its contribution to enhanced and sustainable well-being. ... -
Kelp forests: forests of a different kind
(Botanical Society of South Africa, 2011)The United Nations (UN) Food and Agriculture Organization (FAO) defines a forest as being 'more than 0.5 ha with trees higher than 5 m and a canopy cover of more than 10%, or trees able to reach these thresholds in situ', ... -
KernTune: Self-tuning Linux kernel performance using support vector machines
(Association for Computing Machinery, 2007)Self-tuning has been an elusive goal for operating systems and is becoming a pressing issue for modern operating systems. Well-trained system administrators are able to tune an operating system to achieve better system ... -
Kiara: an open source SIP system to support Deaf telephony
(Telkom, 2008)This paper describes Kiara, an open source SIPbased communication system that provides the building blocks to enable Deaf relay services. We have implemented a prototype that provides real-time text, voice and video to a ... -
The kinematic dipole in galaxy redshift surveys
(IOP Publishing, 2018)In the concordance model of the Universe, the matter distribution { as observed in galaxy number counts or the intensity of line emission (such as the 21cm line of neutral hydrogen) - should have a kinematic dipole due ... -
KPD 0629–0016, a slowly pulsating hot subdwarf star
(Oxford University Press, 2007)The results of nine CCD photometric observing runs on KPD 0629–0016 are presented. During six of the runs measurements were obtained alternately through B and V filters. Four periodicities, for which there is good agreement ... -
La migration ouvrière dans le secteur agricole sud-africain
(Cité nationale de l'histoire de l'immigration, 2013)En Afrique du Sud, le système de production agricole, concentré dans les mains des fermiers blancs, repose toujours sur l’utilisation des migrations des ouvriers agricoles. Si la fin de l’apartheid a permis la création ... -
A label-free gold nanoparticles-based optical aptasensor for the detection of retinol binding protein 4
(MDPI, 2022)Retinol-binding protein 4 (RBP4) has been implicated in insulin resistance in rodents and humans with obesity and T2DM, making it a potential biomarker for the early diagnosis of T2DM. However, diagnostic tools for ... -
Laboratory study on the mobility of major species in fly ash–brine co-disposal systems: up-flow percolation test
(Springer Verlag, 2013)Apart from the generation of fly ash, brine (hyper-saline wastewater) is also a waste material generated in South African power stations as a result of water re-use. These waste materials contain major species such as Al, ... -
A lack of evolution in the very bright end of the galaxy luminosity function from z 8 to 10
(Oxford University Press, 2020)ABSTRACT We utilize deep near-infrared survey data from the UltraVISTA fourth data release (DR4) and the VIDEO survey, in combination with overlapping optical and Spitzer data, to search for bright star-forming galaxies ... -
Landsat-8 and sentinel-2 based prediction of forest plantation c stock using spatially varying coefficient Bayesian hierarchical models
(MDPI, 2022)This study sought to establish the performance of Spatially Varying Coefficient (SVC) Bayesian Hierarchical models using Landsat-8, and Sentinel-2 derived auxiliary information in predicting plantation forest carbon (C) ... -
Landsat-8 and sentinel-2 based prediction of forest plantation c stock using spatially varying coefficient bayesian hierarchical models
(Remote Sensing, 2022)This study sought to establish the performance of Spatially Varying Coefficient (SVC) Bayesian Hierarchical models using Landsat-8, and Sentinel-2 derived auxiliary information in predicting plantation forest carbon (C) ... -
Landuse and landcover change assessment in the Upper Runde sub-catchment, Zimbabwe and possible impacts on reservoir sedimentation
(Physics and Chemistry of the Earth, 2022)This work assesses land cover changes on the Upper Runde sub-catchment, Zimbabwe, and associated effects on sedimentation rates and risks. The model was implemented using the common Geographic Information Systems tools. ... -
Lanthanum modified Fe3N/carbon foam as highly efficient electrode for zinc-air batteries
(Journal of Alloys and Compounds, 2023)Efficient electrocatalysts for the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) are of great importance for large-scale application of rechargeable zinc-air batteries. Iron-nitrogen-carbon materials ... -
Large Scale Screening of Southern African Plant Extracts for the Green Synthesis of Gold Nanoparticles Using Microtitre-Plate Method
(Molecules, 2016-11)The preparation of gold nanoparticles (AuNPs) involves a variety of chemical and physical methods. These methods use toxic and environmentally harmful chemicals. Consequently, the synthesis of AuNPs using green chemistry ...