https://commons.ru.ac.za/vital/access/manager/Index en-us 5 Reproductive and feeding biology of the Natal mountain catfish, Amphilius natalensis (Siluriformes: Amphiliidae) https://commons.ru.ac.za/vital/access/manager/Repository/vital:35823 Wed 31 Jul 2024 11:24:28 SAST ]]> The effects of economic incentives in controlling pollution in the South African leather industry: die uitwerking van ekonomiese insentiewe op die beheer van besoedeling in die Suid-Afrikaanse leerbedryf https://commons.ru.ac.za/vital/access/manager/Repository/vital:38197 Wed 08 May 2024 19:22:02 SAST ]]> Troubled waters in south-western New Georgia, Solomon Islands: Is codification of the commons a viable avenue for resource use regularisation https://commons.ru.ac.za/vital/access/manager/Repository/vital:73732 Wed 03 Jul 2024 10:45:09 SAST ]]> A description of gametogenesis in the panga Pterogymnus laniarius (Pisces: Sparidae) with comments on changes in maturity patterns over the past two decades https://commons.ru.ac.za/vital/access/manager/Repository/vital:74571 Tue 30 Jul 2024 11:04:30 SAST ]]> Management education and training https://commons.ru.ac.za/vital/access/manager/Repository/vital:54490 Tue 14 May 2024 10:23:45 SAST ]]> A model for the analysis of small group interaction–and beyond?: https://commons.ru.ac.za/vital/access/manager/Repository/vital:37711 Tue 14 May 2024 10:06:10 SAST ]]> Photosensitization reactions of neodymium, dysprosium and lutetium diphthalocyanine https://commons.ru.ac.za/vital/access/manager/Repository/vital:57084 Thu 29 Sep 2022 22:30:33 SAST ]]> First-row transition metal phthalocyanines as catalysts for water electrolysis https://commons.ru.ac.za/vital/access/manager/Repository/vital:57081 Thu 29 Sep 2022 22:21:11 SAST ]]> Use of cobalt (II) phthalocyanine to improve the sensitivity and stability of glassy carbon electrodes for the detection of cresols, chlorophenols and phenol https://commons.ru.ac.za/vital/access/manager/Repository/vital:57076 Mn(II)Pc > Fe(II)Pc > Ni(II)Pc > Cu(II)Pc > H2Pc > Zn(II)Pc > GCE. When [Co(II)TSPc]4− (TSPc=tetrasulfo Pc) was added to aqueous solutions containing the cresols and phenols, an enhancement of the oxidation currents was also observed.]]> Thu 29 Sep 2022 19:52:36 SAST ]]> Metallophthalocyanine catalysed electroreduction of nitrate and nitrite ions in alkaline media https://commons.ru.ac.za/vital/access/manager/Repository/vital:57073 5 μg ml−1) are determined by adsorptive cathodic stripping voltammetry (AdCSV) on a mercury film glassy carbon electrode, using catechol, 4-methylcatechol, 4-t-butylcatechol and resorcinol as complexing ligands. Complexes of lead, copper and bismuth with resorcinol showed the largest increase in current with increase in metal concentration, whereas complexes of these metals with 4-t-butylcatechol showed the lowest current response. Cadmium showed a different behaviour from the other three metals in that the highest current response was observed with 4-methylcatechol. The four metals could be determined simultaneously in the presence of resorcinol, although considerable interference was observed between bismuth and copper.]]> Thu 29 Sep 2022 19:45:39 SAST ]]> Catalytic behavior of osmium (II), rhodium (III) and ruthenium (II) Phthalocyanines towards the electrooxidation of cysteine on glassy carbon electrodes https://commons.ru.ac.za/vital/access/manager/Repository/vital:57072 Thu 29 Sep 2022 19:40:58 SAST ]]> Book Review: 1001 activities in environmental education https://commons.ru.ac.za/vital/access/manager/Repository/vital:73490 Thu 20 Jun 2024 08:41:18 SAST ]]> Reflecting on socially transformative environmental literacy for Lesotho https://commons.ru.ac.za/vital/access/manager/Repository/vital:73498 Thu 20 Jun 2024 08:31:45 SAST ]]> Substituted catechols as complexing agents for the determination of bismuth, lead, copper and cadmium by adsorptive stripping voltammetry https://commons.ru.ac.za/vital/access/manager/Repository/vital:57074 5 μg ml−1) are determined by adsorptive cathodic stripping voltammetry (AdCSV) on a mercury film glassy carbon electrode, using catechol, 4-methylcatechol, 4-t-butylcatechol and resorcinol as complexing ligands. Complexes of lead, copper and bismuth with resorcinol showed the largest increase in current with increase in metal concentration, whereas complexes of these metals with 4-t-butylcatechol showed the lowest current response. Cadmium showed a different behaviour from the other three metals in that the highest current response was observed with 4-methylcatechol. The four metals could be determined simultaneously in the presence of resorcinol, although considerable interference was observed between bismuth and copper.]]> Thu 16 May 2024 05:11:04 SAST ]]> Voltammetric behavior of cysteine and metallothionein on cobalt (II) tetrasulfonated phthalocyanine modified glassy carbon electrodes https://commons.ru.ac.za/vital/access/manager/Repository/vital:57077 Thu 16 May 2024 05:11:03 SAST ]]> A description of gametogenesis in the panga Pterogymnus laniarius (Pisces: Sparidae) with comments on changes in maturity patterns over the past two decades https://commons.ru.ac.za/vital/access/manager/Repository/vital:35452 Thu 11 Aug 2022 06:39:06 SAST ]]> On the life history of the lesser gurnard (Scorpaeniformes: Triglidae) inhabiting the Agulhas Bank, South Africa https://commons.ru.ac.za/vital/access/manager/Repository/vital:35782 Mon 13 May 2024 15:06:57 SAST ]]> The timing and duration of the Karoo igneous event, southern Gondwana https://commons.ru.ac.za/vital/access/manager/Repository/vital:38857 Mon 13 May 2024 12:53:23 SAST ]]> The petrology and significance of a stratiform mafic segregation pegmatite in a Karoo-aged dolerite sheet https://commons.ru.ac.za/vital/access/manager/Repository/vital:38858 Mon 13 May 2024 12:31:15 SAST ]]> Petrology and geochemistry of peridotite xenoliths from the Letlhakane kimberlites, Botswana https://commons.ru.ac.za/vital/access/manager/Repository/vital:38876 Mon 13 May 2024 12:30:50 SAST ]]> New placoderm fishes from the Late Devonian of South Africa https://commons.ru.ac.za/vital/access/manager/Repository/vital:30108 Mon 13 May 2024 11:33:55 SAST ]]> Towards sustainable conversation: Developing environmental education processes https://commons.ru.ac.za/vital/access/manager/Repository/vital:68492 Mon 02 Oct 2023 14:23:56 SAST ]]> The study of the interactions of cobalt (II) tetrasulfophthalocyanine with cysteine and histidine https://commons.ru.ac.za/vital/access/manager/Repository/vital:57087 Fri 30 Sep 2022 06:09:09 SAST ]]> Ecology and genetics of hybrid zones in the southern African Pycnonotus bulbul species complex https://commons.ru.ac.za/vital/access/manager/Repository/vital:74675 Fri 02 Aug 2024 15:38:30 SAST ]]> Variation in foraging activity of Acanthochitona garnoti (Mollusca: Polyplacophora) from different habitats https://commons.ru.ac.za/vital/access/manager/Repository/vital:74663 Fri 02 Aug 2024 11:44:34 SAST ]]>