Faculty of Science: Recent submissions
Now showing items 1-20 of 3447
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Seasonal and Agricultural Response of Acidobacteria Present in Two Fynbos Rhizosphere Soils
(MDPI, 2020-07-10)The Acidobacteria is one of the most abundant phyla in most soil types. Fynbos plants are endemic to South Africa, and these soils provide the ideal habitat for Acidobacteria, because of its low pH and oligotrophic properties. ... -
A wide class of Combinatorial matrices related with Reciprocal Pascal and Super Catalan matrices
(2019)Abstract. In this paper, we present a number of combinatorial matrices that are generalizations or variants of the super Catalan matrix and the reciprocal Pascal matrix. We present explicit formul for LUdecompositions of ... -
A note on exact solutions of the logistic map
(AIP Publishing, 2020-03)The logistic map, whose iterations lead to period doubling and chaos as the control parameter, is increased and has three cases of the control parameter where exact solutions are known. In this paper, we show that general ... -
Enzymatic Hydrolysis of Softwood Derived Paper Sludge by an In Vitro Recombinant Cellulase Cocktail for the Production of Fermentable Sugars
(2020)Abstract: Paper sludge is an attractive biomass feedstock for bioconversion to ethanol due to its low cost and the lack of pretreatment required for its bioprocessing. This study assessed the use of a recombinant cellulase ... -
In vitro analysis of the combinatory effects of novel aminonaphthoquinone derivatives and curcumin on breast cancer progression
(International Institute of Anticancer Research, 2020-01)Background/aim: We previously reported the potential of aminonaphthoquinone derivatives as therapeutic agents against breast and other oestrogen-responsive tumours when combined with curcumin. This study aimed at screening ... -
A handbook for the standardised sampling of plant functional traits in disturbance-prone ecosystems, with a focus on open ecosystems
(CSIRO PUBLISHING, 2020-11)Abstract. Plant functional traits provide a valuable tool to improve our understanding of ecological processes at a range of scales. Previous handbooks on plant functional traits have highlighted the importance of ... -
Big Baby, Little Mother: Tsetse Flies Are Exceptions to the Juvenile Small Size Principle
(2020-11)While across the animal kingdom offspring are born smaller than their parents, notable exceptions exist. Several dipteran species belonging to the Hippoboscoidea superfamily can produce offspring larger than themselves. ... -
Dissolved iron in the North Atlantic Ocean and Labrador Sea along the GEOVIDE section (GEOTRACES section GA01)
(2020-02-21)Dissolved Fe (DFe) samples from the GEOVIDE voyage (GEOTRACES GA01, May–June 2014) in the North Atlantic Ocean were analysed using a SeaFAST-picoTM coupled to an Element XR HR-ICP-MS and provided interesting insights on ... -
Convergent patterns of tissue-level distribution of elements in different tropical woody nickel hyperaccumulator species from Borneo Island
(2020-11-13)Abstract The Malaysian state of Sabah on the Island of Borneo has recently emerged as a global hotspot of nickel hyperaccumulator plants. This study focuses on the tissue-level distribution of nickel and other physiologically ... -
The influence of host dispersal on the gene flow and genetic diversity of generalist and specialist ectoparasites
(2020-06)The dispersal and subsequent gene flow within parasite species is the result of a complex interaction between parasite life history, host life history and abiotic environmental factors. To gain more insights into the drivers ... -
Investigations into the cytotoxic mechanism of action for the garlic compound ajoene and its derivatives in breast cancer cells
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: Breast cancer continues to place a severe burden on women globally. There has been a growing interest in natural compounds for cancer prevention, with several phytochemicals possessing anti-cancer ... -
Structure-activity and mechanistic investigations into the cytotoxicity of flavonols in cancer cells
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: Flavonols belong to a group of polyphenolic compounds that are found in medicinal and edible plants. They have a broad range of medicinal properties including anti-cancer properties, being able to ... -
Fruit detection in an orchard using deep learning approaches
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: Over the last few years, we have witnessed rapid advancement in technology in different fields: communication, transport security, finance, and medicine. Agriculture is no exception. Today, agriculture ... -
The Impact of peptide flanking residues on predicting peptide-MHC-II binding interactions using convolutional Neural Networks
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: Major histocompatibility complex class II (MHC-II) is one of three classes of MHC molecules and is located on the surface of professional antigen presenting cells. MHC-II molecules present antigenic ... -
Radiation shielding design for sealed radioactive gamma-ray and neutron sources: measurements and modeling
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: Adequacy of the radiation shielding implemented for sealed radioactive sources used at the University was evaluated and improved. Three different setups were investi- gated; 1. neutron activation drum, ... -
Investigating the geometry of dithiadiazolyl rings
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: In this study, the internal geometry of 1,2,3,5-dithiadiazolyl (DTDA) rings, and how it is affected by charge and dimerisation, was investigated through the synthesis of compounds, spectroscopic titrations, ... -
Quantum computing on cloud-based processors
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: The noisy intermediate-scale quantum (NISQ) era refers to the current technological epoch permeated with quantum processors that are big enough (50-100 qubits) to be no longer trivially simulatable with ... -
Interpolating countour lines with radial basis functions
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: With the growing demand for digital elevation models (DEMs) in science and visualisation, there exists a need to generate these models cheaply and efficiently. While current methods such as remote sensing ... -
Image analysis and theory of spatially confined cytoskeletal filaments
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: An existing self-consistent approach to calculating density was used to model linear as well as branched polymer networks within a selection of confining re- gions with hard-boundaries. Density and ... -
Polymer-coated magnetic nanoparticles and polymer nanoparticles for the treatment of Mycobacterium tuberculosis (Mtb)
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: Tuberculosis (TB) can be classified as a neglected disease where an estimated one fourth of the world’s population could be infected with Mycobacterium tuberculosis (Mtb) in the form of latent TB. ...
