Browsing Faculty of Natural Sciences by Title
Now showing items 698-717 of 2567
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An electrochemically active green synthesized polycrystalline NiO/MgO catalyst: Use in photo-catalytic applications
(Elsevier, 2018)For many years, research scientists have aided communities in their tremendous efforts towards environmental remediation. Due to their high physical and chemical stability, metal oxide nanoparticles (NPs) have been used as ... -
Electrochemically reduced graphene oxide pencil-graphite in situ plated bismuth-film electrode for the determination of trace metals by anodic stripping voltammetry
(ESG, 2014)An electrochemical platform was developed based on a pencil-graphite electrode (PGE) modified with electrochemically reduced graphene oxide (ERGO) sheets and in conjunction with an in situ plated bismuth-film (ERGO-PG-BiE). ... -
Electrochemiluminescence at 3D Printed Titanium Electrodes
(Frontiers Media SA, 2021)The fabrication and electrochemical properties of a 3D printed titanium electrode array are described. The array comprises 25 round cylinders (0.015 cm radius, 0.3 cm high) that are evenly separated on a 0.48 × 0.48 cm ... -
Electrodeposited CuO thin film for wide linear range photoelectrochemical glucose sensing
(Elsevier, 2022)Cupric oxide (CuO) has been used as a non-enzymatic glucose sensor for decades. However, there is a paucity of publications on bare CuO based photo electrochemical (PEC) glucose detection. In this study, a photo active ... -
Electronics of anion hot injection-synthesized te-functionalized kesterite nanomaterial
(MDPI, 2021)Metal chalcogenides such as copper zinc tin sulfide (CZTS) have been intensively studied as potential photovoltaic cell materials, but their viability have been marred by crystal defects and low open circuit potential (Voc) ... -
Eliminating micro-porous layer from gas diffusion electrode for use in high temperature polymer electrolyte membrane fuel cell
(Elsevier, 2017)In this work, we report a simple strategy to improve the performance of high temperature polymer electrolyte membrane fuel cell (HT-PEMFC) by eliminating the micro-porous layer (MPL) from its gas diffusion electrodes ... -
Ellagic acid controls cell proliferation and induces apoptosis in breast cancer cells via inhibition of cyclin-dependent kinase 6
(Multidisciplinary Digital Publishing Institute (MDPI), 2020)Cyclin-Dependent Kinase 6 (CDK6) plays an important role in cancer progression, and thus, it is considered as an attractive drug target in anticancer therapeutics. This study presents an evaluation of dietary phytochemicals, ... -
ELUCID. VIII. simulating the coma galaxy cluster to calibrate model and understand feedback
(Institute of Physics, 2024)We conducted an investigation of the Coma cluster of galaxies by running a series of constrained hydrodynamic simulations with GIZMO-SIMBA and GADGET-3 based on initial conditions reconstructed from the SDSS survey volume ... -
Emerging evidence implicating a role for neurexins in neurodegenerative and neuropsychiatric disorders
(The Royal Society, 2021)Synaptopathies are brain disorders characterized by dysfunctional synapses, which are specialized junctions between neurons that are essential for the transmission of information. Synaptic dysfunction can occur due to ... -
Emerging forms of social action in urban domestic water supply in South Africa and Zimbabwe
(Canadian Center of Science and Education, 2013)This paper compares and contrasts emerging forms of social action in urban domestic water supply in South Africa and Zimbabwe. Both countries represent transitional societies that are facing challenges of providing clean ... -
Emotion and stress recognition related sensors and machine learning technologies
(MPDI, 2021)Intelligent sociotechnical systems are gaining momentum in today’s informationrich society, where different technologies are used to collect data from such systems and mine this data to make useful insights about our ... -
Empowerment of rural farmers through information sharing using inexpensive technologies
(ACM, 2011)This paper discusses how to empower rural farmers to do business by means of inexpensive mobile technologies. In particular, the aim is to take advantage of the inexpensive features of low-end mobile phones to access market ... -
Enabling unsupervised discovery in astronomical images through self-supervised representations
(Oxford University Press, 2024)Unsupervised learning, a branch of machine learning that can operate on unlabelled data, has proven to be a powerful tool for data exploration and discovery in astronomy. As large surveys and new telescopes drive a rapid ... -
Endocrine contribution to the sexual dysfunction in patients with advanced chronic kidney disease and the role of hyperprolactinemia
(John Wiley and Sons Inc, 2021)In this study, we investigated the prevalence of sexual dysfunction among males with advanced chronic kidney disease and the effect of treating hyperprolactinemia among these patients. In this prospective study, patients ... -
Energy-momentum tensor and helicity for gauge fields coupled to a pseudoscalar inflaton
(University of the Western Cape, 2019)We study the energy-momentum tensor and helicity of gauge fields coupled through $g \phi F \tilde{F}/4$ to a pseudo-scalar field $\phi$ driving inflation. Under the assumption of a constant time derivative of the background ... -
Engaging ICTs as a “Tool” for eHealth prioritization on human development and poverty reduction in the African region
(Institute of Electrical and Electronics Engineers (IEEE) Inc., 2011)The association connecting information and communication technologies (ICTs) and well-being or poverty remains vague and research today has resulted to divergent conclusions. This paper defines ICTs as “tools” that facilitate ... -
Engineering pyruvate decarboxylase-mediated ethanol production in the thermophilic host Geobacillus thermoglucosidasius
(Springer Verlag, 2013)This study reports the expression, purification, and kinetic characterization of a pyruvate decarboxylase (PDC) from Gluconobacter oxydans . Kinetic analyses showed the enzyme to have high affinity for pyruvate (120 μM at ... -
Enhanced anti-bacterial activity of biogenic silver nanoparticles synthesized from terminalia mantaly extracts
(Dove Press, 2019)The global increase in outbreaks and mortality rates associated with multidrug- resistant (MDR) bacteria is a major health concern and calls for alternative treatments. Natural-derived products have shown potential in ... -
Enhanced drug loading capacity of polypyrrole nanowire network for confrolled drug release
(Elsevier, 2013)For a conducting polymer (CP) based drug release system, drug loading is often accomplished by a doping process, in which drug is incorporated into polymer as dopant. Therefore, the drug loading capacity is relatively low ... -
Enhanced efficiency and stability of sky blue perovskite light-emitting diodes via introducing lead acetate
(Multidisciplinary Digital Publishing Institute (MDPI), 2024)All-inorganic metal halide perovskite is promising for highly efficient and thermally stable perovskite light-emitting diodes (PeLEDs). However, there is still great room for improvement in the film quality, including low ...