https://vital.seals.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 Investigating a new wealth tax in South Africa: Lessons from international experience https://vital.seals.ac.za/vital/access/manager/Repository/vital:29536 Wed 27 Sep 2023 13:10:54 SAST ]]> Think Piece on Amanzi for Food. Working with Critical Realism to Inform a Situated Learning Framework for Climate Change Education https://vital.seals.ac.za/vital/access/manager/Repository/vital:68309 Wed 24 Apr 2024 16:20:07 SAST ]]> Towards transformative social learning on the path to 1.5 degrees https://vital.seals.ac.za/vital/access/manager/Repository/vital:43832 Wed 24 Apr 2024 13:36:11 SAST ]]> Think Piece: Pioneers as relational subjects? Probing relationality as phenomenon shaping collective learning and change agency formation https://vital.seals.ac.za/vital/access/manager/Repository/vital:43874 Wed 24 Apr 2024 13:35:38 SAST ]]> Exploring learning networks for homestead food gardening and smallholder farming https://vital.seals.ac.za/vital/access/manager/Repository/vital:43873 Wed 24 Apr 2024 13:34:35 SAST ]]> Novel nano-dyad of homoleptic sandwich-type phthalocyanines with nitrogen doped graphene quantum dots for nonlinear optics https://vital.seals.ac.za/vital/access/manager/Repository/vital:50086 Wed 20 Apr 2022 13:28:53 SAST ]]> The investigation of in vitro dark cytotoxicity and photodynamic therapy effect of a 2, 6-dibromo-3, 5-distyryl BODIPY dye encapsulated in Pluronic® F-127 micelles https://vital.seals.ac.za/vital/access/manager/Repository/vital:44704 Wed 15 May 2024 10:36:36 SAST ]]> Photophysicochemical properties and photodynamic therapy activity of highly water-soluble Zn (II) phthalocyanines https://vital.seals.ac.za/vital/access/manager/Repository/vital:50203 Wed 15 May 2024 10:36:00 SAST ]]> Photodynamic therapy activity of zinc phthalocyanine linked to folic acid and magnetic nanoparticles https://vital.seals.ac.za/vital/access/manager/Repository/vital:50195 Wed 15 May 2024 10:35:22 SAST ]]> Effects of Pluronic F127 micelles as delivering agents on the vitro dark toxicity and photodynamic therapy activity of carboxy and pyrene substituted porphyrins https://vital.seals.ac.za/vital/access/manager/Repository/vital:50196 Wed 15 May 2024 10:34:40 SAST ]]> Effect of number of positive charges on the photophysical and photodynamic therapy activities of quarternary benzothiazole substituted zinc phthalocyanine https://vital.seals.ac.za/vital/access/manager/Repository/vital:44700 Wed 15 May 2024 10:34:09 SAST ]]> A gold–chitosan composite with low symmetry zinc phthalocyanine for enhanced singlet oxygen generation and improved photodynamic therapy activity https://vital.seals.ac.za/vital/access/manager/Repository/vital:50087 Wed 15 May 2024 10:33:09 SAST ]]> Photophysicochemical behaviour and antimicrobial properties of monocarboxy Mg (II) and Al (III) phthalocyanine-magnetite conjugates https://vital.seals.ac.za/vital/access/manager/Repository/vital:44734 Wed 10 Aug 2022 06:57:14 SAST ]]> Incorporation of metal free and Ga 5, 10, 15, 20-tetrakis (4-bromophenyl) porphyrin into Pluronic F127-folic acid micelles https://vital.seals.ac.za/vital/access/manager/Repository/vital:50073 Wed 10 Aug 2022 05:39:17 SAST ]]> The socialisation and leader identity development of school leaders in Southern African countries https://vital.seals.ac.za/vital/access/manager/Repository/vital:55696 Wed 08 May 2024 19:47:54 SAST ]]> 'We pledge to improve the health of our entire community' https://vital.seals.ac.za/vital/access/manager/Repository/vital:55699 Wed 08 May 2024 19:45:20 SAST ]]> The photophysicochemical behavior of symmetric and asymmetric zinc phthalocyanines, surface assembled onto gold nanotriangles https://vital.seals.ac.za/vital/access/manager/Repository/vital:50079 Wed 08 May 2024 15:06:26 SAST ]]> Synthesis and photophysical properties of BODIPY-decorated graphene quantum dot–phthalocyanine conjugates https://vital.seals.ac.za/vital/access/manager/Repository/vital:50088 Wed 08 May 2024 15:04:46 SAST ]]> Pyridone substituted phthalocyanines: Photophysico-chemical properties and TD-DFT calculations https://vital.seals.ac.za/vital/access/manager/Repository/vital:44735 Wed 08 May 2024 15:04:12 SAST ]]> Porphyrin dimers with a bridging chiral amide-bonded benzo-moiety https://vital.seals.ac.za/vital/access/manager/Repository/vital:50090 Wed 08 May 2024 15:03:38 SAST ]]> Photophysical properties of a novel styryl-BODIPY with a fused crown ether moiety https://vital.seals.ac.za/vital/access/manager/Repository/vital:44736 Wed 08 May 2024 15:03:07 SAST ]]> Photophysical and strong optical limiting properties of ball-type phthalocyanines dimers and their monomeric analogues https://vital.seals.ac.za/vital/access/manager/Repository/vital:44711 Wed 08 May 2024 15:02:33 SAST ]]> Optical limiting properties of 3, 5-dipyrenylvinyleneBODIPY dyes at 532 nm https://vital.seals.ac.za/vital/access/manager/Repository/vital:50567 Wed 08 May 2024 15:02:05 SAST ]]> Enhanced nonlinear optical response of benzothiazole substituted ball-type phthalocyanines in the presence of metallic nanoparticles https://vital.seals.ac.za/vital/access/manager/Repository/vital:44727 Wed 08 May 2024 15:01:39 SAST ]]> Electrospun 3, 5-dithienylvinyleneBODIPY embedded polystyrene nanofibers for the photocatalytic degradation of azo dyes in industrial wastewaters https://vital.seals.ac.za/vital/access/manager/Repository/vital:44686 Wed 08 May 2024 14:56:39 SAST ]]> Core-modified rubyrins with phenanthrene-fused pyrrole rings https://vital.seals.ac.za/vital/access/manager/Repository/vital:50209 Wed 08 May 2024 14:56:10 SAST ]]> Effects of the carboxylic acid substituents on the photophysical and nonlinear optical properties of asymmetrical Zn (II) phthalocyanines–quantum dots conjugates https://vital.seals.ac.za/vital/access/manager/Repository/vital:44684 Tue 24 May 2022 15:26:37 SAST ]]> Electrocatalytic activity of a push-pull phthalocyanine in the presence of reduced and amino functionalized graphene quantum dots towards the electrooxidation of hydrazine https://vital.seals.ac.za/vital/access/manager/Repository/vital:50092 Tue 18 Jul 2023 22:13:00 SAST ]]> Physicochemical properties of water soluble unsymmetrical phthalocyanine-folic acid conjugates https://vital.seals.ac.za/vital/access/manager/Repository/vital:50071 Tue 18 Jul 2023 21:31:00 SAST ]]> Quantitation of zolpidem in biological fluids by electro-driven microextraction combined with HPLC-UV analysis https://vital.seals.ac.za/vital/access/manager/Repository/vital:44266 75 within 15 minutes. The effect of carbon nanotubes (as solid nano-sorbents) on the membrane performance and EME efficiency was evaluated. The method was linear over the range of 10-1000 ng/mL for zolpidem (R2 >0.9991) with repeatability (%RSD) between 0.3 % and 7.3 % (n = 3). The limits of detection and quantitation were 3 and 10 ng/mL, respectively. The sensitivity of HPLC-UV for the determination of zolpidem was enhanced by electromembrane extraction. Finally, the method was employed for the quantitation of zolpidem in biological samples with relative recoveries in the range of 60-79 %.]]> Tue 14 May 2024 11:52:00 SAST ]]> The use of experimental design for the development and validation of an HPLC-ECD method for the quantitation of efavirenz https://vital.seals.ac.za/vital/access/manager/Repository/vital:44006 Tue 14 May 2024 10:59:25 SAST ]]> Low symmetric metallophthalocyanine modified electrode via click chemistry for simultaneous detection of heavy metals https://vital.seals.ac.za/vital/access/manager/Repository/vital:44709 Tue 12 Oct 2021 10:30:44 SAST ]]> Optical nonlinearity of pentadecylphenoxyl substituted sandwich–type metallophthalocyanines in the presence of Ag–CdSeTe/ZnTeSe nanocrystals: Effects of conjugation and central metals https://vital.seals.ac.za/vital/access/manager/Repository/vital:44708 Tue 12 Oct 2021 10:18:27 SAST ]]> Conjugation of isoniazid to a zinc phthalocyanine via hydrazone linkage for pH-dependent liposomal controlled release https://vital.seals.ac.za/vital/access/manager/Repository/vital:45517 Tue 07 May 2024 15:46:08 SAST ]]> Satisfaction with family life in South Africa: The role of socioeconomic status https://vital.seals.ac.za/vital/access/manager/Repository/vital:69151 Tue 07 May 2024 08:54:19 SAST ]]> Evaluation of the photophysicochemical properties and photodynamic therapy activity of nanoconjugates of zinc phthalocyanine linked to glutathione capped Au and Au3Ag1 nanoparticles https://vital.seals.ac.za/vital/access/manager/Repository/vital:50563 Tue 03 May 2022 10:22:28 SAST ]]> Urban street names: An opportunity to examine biocultural relationships? https://vital.seals.ac.za/vital/access/manager/Repository/vital:43817 Thu 22 Jul 2021 16:41:50 SAST ]]> Think Piece. Intersectional Resonance and the Multiplicity of Being in a Polarised World https://vital.seals.ac.za/vital/access/manager/Repository/vital:68301 Thu 16 May 2024 05:30:01 SAST ]]> A peaceful revenge: Achieving structural and agential transformation in a South African context using cognitive justice and emancipatory social learning https://vital.seals.ac.za/vital/access/manager/Repository/vital:68717 Thu 16 May 2024 05:21:52 SAST ]]> The effect of the cobalt and manganese central metal ions on the nonlinear optical properties of tetra (4-propargyloxyphenoxy) phthalocyanines https://vital.seals.ac.za/vital/access/manager/Repository/vital:50083 CoTPrOPhOPc > Mn(OAc)TPrOPhOPc. The values βeff (×10−5 m MW−1) using 532 nm Nd:YAG (560 nm monochromatic Ekspla) laser sources were 23.5 > 14.3 > 9.20 (14.4). The second-order nonlinear coefficient obtained using density functional theory calculations, the theoretical hyper-Rayleigh scattering (βHRS, ×10−28 esu), showed the decreasing trend for H2TPrOPhOPc (2.28) > CoTPrOPhOPc (2.10) > Mn(OAc)TPrOPhOPc (1.86). The 4-(propargyloxy)phenoxy substituents enhanced the optical limiting properties of the synthesized phthalocyanines.]]> Thu 11 Aug 2022 12:39:51 SAST ]]> Photophysics and NLO properties of Ga (III) and In (III) phthalocyaninates bearing diethyleneglycol chains https://vital.seals.ac.za/vital/access/manager/Repository/vital:50556 Thu 11 Aug 2022 12:39:00 SAST ]]> Optimizing phthalocyanine based dye-sensitized solar cells: The role of reduced graphene oxide https://vital.seals.ac.za/vital/access/manager/Repository/vital:44695 Thu 11 Aug 2022 12:37:38 SAST ]]> Effect of nature of nanoparticles on the photophysicochemical properties of asymmetrically substituted Zn phthalocyanines https://vital.seals.ac.za/vital/access/manager/Repository/vital:50206 Thu 11 Aug 2022 12:36:41 SAST ]]> The green economy learning assessment South Africa: Lessons for higher education, skills and work-based learning https://vital.seals.ac.za/vital/access/manager/Repository/vital:43872 Thu 09 May 2024 06:25:54 SAST ]]> The status and distribution of a newly identified endemic galaxiid in the eastern Cape Fold Ecoregion, of South Africa https://vital.seals.ac.za/vital/access/manager/Repository/vital:72250 Thu 02 May 2024 09:21:29 SAST ]]> Photophysical studies of graphene quantum dots-Pyrene-derivatized porphyrins conjugates when encapsulated within Pluronic F127 micelles https://vital.seals.ac.za/vital/access/manager/Repository/vital:44714 Sat 04 Dec 2021 12:22:30 SAST ]]> Photo-induced resonance energy transfer and nonlinear optical response in ball-type phthalocyanine conjugated to semiconductor and graphene quantum dots https://vital.seals.ac.za/vital/access/manager/Repository/vital:44713 Sat 04 Dec 2021 12:21:58 SAST ]]> One-pot synthesis of graphene quantum dots–phthalocyanines supramolecular hybrid and the investigation of their photophysical properties https://vital.seals.ac.za/vital/access/manager/Repository/vital:44725 Sat 04 Dec 2021 12:21:07 SAST ]]> In-situ synthesis of gold nanoparticles on graphene quantum dots-phthalocyanine nanoplatforms: First description of the photophysical and surface enhanced Raman scattering behaviour https://vital.seals.ac.za/vital/access/manager/Repository/vital:44682 Sat 04 Dec 2021 12:20:21 SAST ]]> In-situ synthesis of gold nanoparticles on graphene quantum dots-phthalocyanine nanoplatforms: First description of the photophysical and surface enhanced Raman scattering behaviour https://vital.seals.ac.za/vital/access/manager/Repository/vital:44730 Sat 04 Dec 2021 12:19:30 SAST ]]> Effect of doping vs covalent linking of a low symmetry zinc phthalocyanine to silica nanoparticles on singlet oxygen production https://vital.seals.ac.za/vital/access/manager/Repository/vital:44705 Mon 11 Oct 2021 14:03:32 SAST ]]> Wood preservation with gold hydroxyapatite system https://vital.seals.ac.za/vital/access/manager/Repository/vital:44702 Mon 11 Oct 2021 13:25:19 SAST ]]> Improved Photophysical and Photochemical Properties of Thiopheneethoxy Substituted Metallophthalocyanines on Immobilization onto Gold‐speckled Silica Nanoparticles https://vital.seals.ac.za/vital/access/manager/Repository/vital:44688 Mon 11 Oct 2021 11:06:34 SAST ]]> Synthesis, photophysicochemical and photodynamic antimicrobial chemotherapy studies of indium pyridyl phthalocyanines: Charge versus bridging atom https://vital.seals.ac.za/vital/access/manager/Repository/vital:44683 Mon 11 Oct 2021 10:40:35 SAST ]]> Click chemistry electrode modification using 4-ethynylbenzyl substituted cobalt phthalocyanine for applications in electrocatalysis https://vital.seals.ac.za/vital/access/manager/Repository/vital:44681 Mon 11 Oct 2021 09:32:46 SAST ]]> Singlet oxygen generating properties of different sizes of charged Graphene quantum dot Nanoconjugates with a positively charged Phthalocyanine https://vital.seals.ac.za/vital/access/manager/Repository/vital:44680 Mon 11 Oct 2021 09:23:21 SAST ]]> Influence of land cover, proximity to streams and household topographical location on flooding impact in informal settlements in the Eastern Cape, South Africa https://vital.seals.ac.za/vital/access/manager/Repository/vital:43799 Mon 08 Aug 2022 09:12:14 SAST ]]> Traditional, indigenous, or leafy?: A definition, typology, and way forward for African vegetables https://vital.seals.ac.za/vital/access/manager/Repository/vital:43189 Mon 08 Aug 2022 06:38:38 SAST ]]> The production and commercialization of palm wine from Hyphaene coriacea and Phoenix reclinata in Zitundo area, southern Mozambique https://vital.seals.ac.za/vital/access/manager/Repository/vital:43190 Mon 08 Aug 2022 06:35:38 SAST ]]> The potential use of natural resources in urban informal settlements as substitutes for financial capital during flooding emergencies https://vital.seals.ac.za/vital/access/manager/Repository/vital:43191 Mon 08 Aug 2022 06:33:43 SAST ]]> Temporal dynamics and motivations for urban community food gardens in medium-sized towns of the Eastern Cape, South Africa https://vital.seals.ac.za/vital/access/manager/Repository/vital:43178 Mon 08 Aug 2022 06:32:15 SAST ]]> Special section on urbanisation and ecosystem services in sub-Saharan Africa: Current status and scenarios https://vital.seals.ac.za/vital/access/manager/Repository/vital:43910 Mon 08 Aug 2022 06:29:45 SAST ]]> Reproductive phenology of two Mimusops species in relation to climate, tree diameter and canopy position in Benin (West Africa) https://vital.seals.ac.za/vital/access/manager/Repository/vital:43354 Mon 08 Aug 2022 06:27:56 SAST ]]> Price determination of non-timber forest products in different areas of South Africa https://vital.seals.ac.za/vital/access/manager/Repository/vital:43192 Mon 08 Aug 2022 06:25:27 SAST ]]> Nontimber forest products as ecological and biocultural keystone species https://vital.seals.ac.za/vital/access/manager/Repository/vital:43359 Mon 08 Aug 2022 06:24:01 SAST ]]> More than just fields: Reframing deagrarianisation in landscapes and livelihoods https://vital.seals.ac.za/vital/access/manager/Repository/vital:43353 Mon 08 Aug 2022 06:20:52 SAST ]]> Mechanisms and indicators for assessing the impact of biofuel feedstock production on ecosystem services https://vital.seals.ac.za/vital/access/manager/Repository/vital:43727 Mon 08 Aug 2022 06:19:08 SAST ]]> Informal urban fuelwood markets in South Africa in the context of socio-economic change https://vital.seals.ac.za/vital/access/manager/Repository/vital:43179 Mon 08 Aug 2022 06:17:53 SAST ]]> Household food insecurity along an agro-ecological gradient influences children’s nutritional status in South Africa https://vital.seals.ac.za/vital/access/manager/Repository/vital:43193 Mon 08 Aug 2022 05:52:29 SAST ]]> Cropland abandonment in South African smallholder communal lands: Land cover change (1950–2010) and farmer perceptions of contributing factors https://vital.seals.ac.za/vital/access/manager/Repository/vital:43351 Mon 08 Aug 2022 05:46:20 SAST ]]> Writing groups as transformative spaces https://vital.seals.ac.za/vital/access/manager/Repository/vital:44576 Mon 06 May 2024 15:40:44 SAST ]]> Postgraduate writing groups as spaces of agency development https://vital.seals.ac.za/vital/access/manager/Repository/vital:44578 Mon 06 May 2024 15:39:22 SAST ]]> The distribution and abundance of the stem-galling fly, Cecidochares connexa (Macquart)(Diptera: Tephritidae), a biological control agent of Chromolaena odorata (L.)(Asteraceae), in Ghana https://vital.seals.ac.za/vital/access/manager/Repository/vital:70334 Fri 26 Apr 2024 11:03:15 SAST ]]> Prospects for biological control of cactus weeds in Namibia https://vital.seals.ac.za/vital/access/manager/Repository/vital:71460 Fri 26 Apr 2024 11:02:45 SAST ]]> Evaluating the efficacy of Hypogeococcus sp. as a biological control agent of the cactaceous weed Cereus jamacaru in South Africa https://vital.seals.ac.za/vital/access/manager/Repository/vital:72051 Fri 26 Apr 2024 11:02:06 SAST ]]> Morphological, genetic and biological characterisation of a novel alphabaculovirus isolated from Cryptophlebia peltastica (Lepidoptera: Tortricidae) https://vital.seals.ac.za/vital/access/manager/Repository/vital:71635 Fri 26 Apr 2024 10:00:39 SAST ]]> Integrating chemical control with sterile insect releases in an integrated pest management programme for Thaumatotibia leucotreta https://vital.seals.ac.za/vital/access/manager/Repository/vital:72092 Fri 26 Apr 2024 09:59:52 SAST ]]> Evidence for a new regime shift between floating and submerged invasive plant dominance in South Africa https://vital.seals.ac.za/vital/access/manager/Repository/vital:72114 Fri 26 Apr 2024 09:59:00 SAST ]]> Development of a Postharvest Cold Treatment for Cryptophlebia peltastica (Lepidoptera: Tortricidae) for Export of Litchis From South Africa https://vital.seals.ac.za/vital/access/manager/Repository/vital:72089 Fri 26 Apr 2024 09:57:37 SAST ]]> The Primary Demonstration of Exciton Coupling Effects on Optical Limiting Properties of Blue Double-Decker Lanthanide Phthalocyanine Salts https://vital.seals.ac.za/vital/access/manager/Repository/vital:50213 Fri 22 Apr 2022 13:26:50 SAST ]]> Glycosylated zinc phthalocyanine-gold nanoparticle conjugates for photodynamic therapy https://vital.seals.ac.za/vital/access/manager/Repository/vital:50205 Fri 22 Apr 2022 12:20:45 SAST ]]> Rethinking urban green infrastructure and ecosystem services from the perspective of sub-Saharan African cities https://vital.seals.ac.za/vital/access/manager/Repository/vital:69403 Fri 10 May 2024 14:48:44 SAST ]]> How important is green infrastructure in small and medium-sized towns? Lessons from South Africa https://vital.seals.ac.za/vital/access/manager/Repository/vital:69400 Fri 10 May 2024 14:46:56 SAST ]]> Social-ecological systems as complex adaptive systems https://vital.seals.ac.za/vital/access/manager/Repository/vital:71346 Fri 10 May 2024 14:37:50 SAST ]]> Relational values about nature in protected area research https://vital.seals.ac.za/vital/access/manager/Repository/vital:71345 Fri 10 May 2024 14:37:03 SAST ]]> HIV/AIDS and other household shocks as catalysts of local commercialization of non-timber forest products in Southern Africa https://vital.seals.ac.za/vital/access/manager/Repository/vital:69385 Fri 10 May 2024 07:46:46 SAST ]]> Introduction to the special issue: applied critical realism in the social sciences https://vital.seals.ac.za/vital/access/manager/Repository/vital:68724 Fri 06 Oct 2023 12:59:55 SAST ]]> Exploring the potential of developmental work research and change laboratory to support sustainability transformations: a case study of organic agriculture in Zimbabwe https://vital.seals.ac.za/vital/access/manager/Repository/vital:68723 Fri 06 Oct 2023 12:56:49 SAST ]]> Revolutionary trends at the National Arts Festival 2017 (an overview) https://vital.seals.ac.za/vital/access/manager/Repository/vital:49235 Fri 01 Apr 2022 11:06:01 SAST ]]>