Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 1487-1506 of 4827
-
Electrochemical determination of serotonin in urine samples based on metal oxide nanoparticles/MWCNT on modified glassy carbon electrode
(Elsevier, 2017)The electrochemical response of serotonin on the modified electrode based on multiwalled-carbon-nanotube (MWCNT) doped respectively with nickel, zinc and iron oxide nanoparticles coating on glassy carbon electrode (GCE) ... -
Electrochemical investigation of substituted aniline, melamine and formaldehydebBased terpolymers as effective corrosion inhibitors for mild steel in 1M hydrochloric acid solution
(ESG, 2014)Three Terpolymers TERP-1, TERP-2 and TERP-3 were synthesized using melamine, formaldehyde and substituted aniline and their inhibitive action on corrosion of mid steel in 1M HCl was studied using electrochemical impedance ... -
Electrochemical response of nitrite and nitric oxide on graphene oxide nanoparticles doped with Prussian blue (PB) and Fe2O3 nanoparticles
(Royal Soc Chemistry, 2015)Electrocatalytic behaviour of graphene oxide (GO), iron(III) oxide (Fe2O3) and Prussian blue (PB) nanoparticles and their nanocomposite towards nitrite (NO2−) and nitric oxide (NO) oxidation in neutral and acidic media ... -
An electrochemical study of carbon dioxide electroreduction on gold-based nanoparticle catalysts
(Elsevier, 2014)We report here on an electrochemical study of carbon dioxide electroreduction (CO2ER) employing electrochemical impedance spectroscopy (EIS) and a rotating ring-disk electrode (RRDE) on different gold based catalysts, ... -
Electrochemical Study of Pyrene on Glassy Carbon Electrode Modified with Metal-Oxide Nanoparticles and Graphene Oxide/Multi-Walled Carbon Nanotubes Nanoplatform
(Trans Tech Publications, 2016)This work describes and compares the electron transport and electrocatalytic properties of chemically synthesised cobalt oxide (Co3O4) and nickel oxide (NiO) nanoparticles grafted onto graphene oxide (GO)/acid treated ... -
Electrochemical, theoretical, and surface morphological studies of corrosion inhibition effect of green naphthyridine derivatives on mild steel in hydrochloric acid
(American Chemical Society, 2016)The corrosion inhibition efficiencies of three novel naphthyridines namely, 5-amino-9-hydroxy-2-phenylchromeno[4,3,2-de][1,6]naphthyridine-4-carbonitrile (N-1), 5-amino-9-hydroxy-2-(p-tolyl)chromeno[4,3,2-de][1,6]naphthy ... -
Electrochemical, thermodynamic and quantum chemical studies of synthesized benzimidazole derivatives as corrosion inhibitors for N80 steel in hydrochloric acid
(Elsevier, 2016)The inhibitive action of synthesized benzimidazole derivatives, namely: 2-(1-(morpholinomethyl)-1H-benzo[d]imidazol-2-yl)phenol (MBP), 2-(1-((piperazine-1-yl)methyl)-1H-benzo[d]imidazol-2-yl)phenol (PzMBP) and 2-(1-((pip ... -
Electron anisotropies in the inner heliosphere
(Elsevier, 2008)A three-dimensional numerical model is used to study the propagation and modulation of a few MeV Jovian and galactic electrons in the inner heliosphere. The main aim of the work is to compute the three-dimensional electron ... -
Electrospun sulfonated poly(ether ketone) nanofibers as proton conductive reinforcement for durable Nafion composite membranes
(Elsevier, 2017)We show that the combination of direct membrane deposition with proton conductive nanofiber reinforcement yields highly durable and high power density fuel cells. Sulfonated poly(ether ketone) (SPEK) was directly electrospun ... -
Electrostatic triple root structures: connections to supersolitons, double layers, and acoustic speed solitons in nonthermal plasmas with negative and positive dust
(AIP, 2017)Large-amplitude dust-acoustic solitons and double layers in a dusty plasma model comprised of nonthermal Cairns electrons and ions, and cold, negative and positive dust grains had earlier been investigated, before newer ... -
Electrowinning of iron from spent leaching solutions using novel anion exchange membranes
(MDPI, 2019)In the Pyror process, electrowinning (EW) is used to recover acid and iron from spent leaching solutions (SLS), where a porous Terylene membrane acts as a separator between the cathode and anode. In this study, a novel ... -
Elthusa nierstraszi nom. n., the replacement name for Elthusa parva (Nierstrasz, 1915), a junior secondary homonym of Elthusa parva (Richardson, 1910) (Isopoda, Cymothoidae)
(Pensoft, 2016)The recent transfer of Elthusa parva (Richardson, 1910) from Ceratothoa created a homonymy with Elthusa parva (Nierstrasz, 1915). Elthusa parva (Richardson, 1910) has priority and Elthusa nierstraszi nom. n. is proposed ... -
Elthusa winstoni sp. n. (Isopoda, Cymothoidae), a new fish parasitic isopod from Hawaii
(Pensoft, 2017)The new cymothoid species, Elthusa winstoni sp. n., a branchial parasite of fishes from the family Acanthuridae Bonaparte, 1835 in Hawaii, is described and figured. The female adults can be distinguished by the strongly ... -
Elucidating the antimicrobial mechanisms of colistin sulfate on Mycobacterium tuberculosis using metabolomics
(Elsevier, 2018)Considering the disadvantageous of first line anti-tuberculosis (TB) drugs, including poor patient adherence, drug side effects, the long treatment duration and rapidly increasing microbe resistance, alternative treatment ... -
Elucidation of the structural and molecular properties of typical South African coals
(ACS, 2013)Advanced analytical techniques were performed on four South African coals, three noncoking and one coking, containing different maceral contributions (vitrinite contents ranging between 24 and 66 vol %, m.m.f.b.). ... -
Email security awareness: a practical assessment of employee behaviour
(Springer, 2007)Email communication is growing as a main method for individuals and organizations to communicate. Sadly, this is also an emerging means of conducting crime in the cyber world, e.g. identity theft, virus attacks etc. ... -
Embracing evolutionary change to advance impact assessment (IA)
(Taylor & Francis, 2019)Impact assessment (IA) originated as, and continues to be, an instrument that contributes towards sustainable development. In response to the considerable sustainability challenges facing our planet this article argues for ... -
The emergence of soft approaches
(ORSSA, 2019) -
Emissions management and health exposure: should all power stations be treated equal?
(Springer, 2017)At the centre of all air quality regulation stands the right of humans to an environment that is not harmful to health and well-being. In many developing countries, including South Africa, coal-fired power station emissions ...