Browsing Faculty of Natural and Agricultural Sciences by Author "4a5ac86b-11cd-45ed-867d-f686110f5b03"
Now showing items 1-16 of 16
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A bimodal pollination system enhances reproductive potential of translocated populations of an endangered grassland succulent
Jansen, Peter G.; Siebert, Stefan J.; Siebert, Frances; Van den Berg, Johnnie; Jordaan, Anine (AOSIS, 2019)A major concern during the translocation of higher plant species is related to habitat suitability and the availability of pollination services. Should these not meet the requirements of the plant, then successful reproduction ... -
Colloidal synthesis of monodispersed ZnS and CdS nanocrystals from novel zinc and cadmium complexes
Onwudiwe, Damian C.; Mohammed, Aliyu D.; Strydom, Christien A.; Young, Desmond A.; Jordaan, Anine (Elsevier, 2014)Monodispersed spherical and hexagonal shaped ZnS and CdS nanocrystals respectively, have been synthesized using novel heteroleptic complexes of xanthate (S2CObu) and dithiocarbamate (S2CNMePh). The nanocrystals were prepared ... -
The family Lohmanniidae (Acari, Oribatida) II: two new Oribatid mites, Meristacarus perikopesis sp. n. from Costa Rica and Torpacarus eidikoterai sp. n. from Kenya
Fernandez, Nestor; Theron, Pieter; Jordaan, Anine; Leiva, Sergio (Pensoft, 2018)Two very particular new species of the family Lohmanniidae were studied and described using optical and Scanning Electron Microscopy (SEM). Meristacarus perikopesis sp. n. displays complex cuticular microsculpture with ... -
Growth of soil algae and cyanobacteria on gold mine tailings material
Seiderer, Tanya; Venter, Arthurita; Van Wyk, Fanus; Levanets, Anatoliy; Jordaan, Anine (ASSAf, 2017)The goal of revegetation of gold mine tailings storage facilities is to reduce aeolian pollution, nutrient leaching and erosion caused by exposure to wind and water. The establishment of biological soil crusts may prove ... -
Laser-assisted synthesis, and structural and thermal properties of ZnS nanoparticles stabilised in polyvinylpyrrolidone
Onwudiwe, Damian C.; Krüger, Tjaart P.J.; Jordaan, Anine; Strydom, Christien A. (Elsevier, 2014)Zinc sulphide (ZnS) nanoparticles have been synthesised by a green approach involving laser irradiation of an aqueous solution of zinc acetate (Znac2) and sodium sulphide (Na2S·9H2O) or thioacetamide (TAA) in polyvinylpyrrolidone ... -
Modified HEPES one-pot synthetic strategy for gold nanostars
Mulder, Danielle Wingrove; Phiri, Masauso Moses; Jordaan, Anine; Vorster, Barend Christiaan (RSC, 2019)Gold nanostars are being used more regularly in the biosensing field. Despite their useful attributes, there is still a need to optimize aspects of the synthesis and stability. The seedless, synthetic method comprising ... -
Pollen morphology and folding of Prototulbaghia Vosa (Amaryllidaceae), South Africa
Struwig, Madeleen; Siebert, Stefan John; Jordaan, Anine; Andriessen, Melissa (Taylor & Francis, 2016)Prototulbaghia is a genus within the Tulbaghieae in subfamily Allioideae (Amaryllidaceae) and comprises two species restricted to the northeastern escarpment of South Africa. The pollen morphology of these species is studied ... -
Revision of the family Carabodidae (Acari: Oribatida) V (Fifth part). Redescription of Congocepheus latilamellatus Mahunka 1984, with complementary studies of C. ornatus, Mahunka 1983. Descriptions of Tanzaniacepheus gen. nov. and Zimbabwecepheus gen. nov.
Fernandez, Nestor; Jordaan, Anine; Leiva, Sergio (Magnolia Press, 2017)Redescription of Congocepheus latilamellatus, with complementary studies of Congocepheus ornatus. Congocepheus latilamellatus is a senior synonym of C. ornatus. Two new genera, Tanzaniacepheus and Zimbabwecepheus are ... -
Revision of the family Carabodidae (Acari: Oribatida) XV. Costacarabodes turrialbai gen. nov., sp. nov. and Tuberocepheus kompsosis sp. nov from Costa Rica
Fernandez, Nestor; Theron, Pieter; Jordaan, Anine; Leiva, Sergio (Taylor & Francis, 2018)Costacarabodes turrialbai gen. nov., sp. nov. and Tuberocepheus kompsosis sp. nov. from Costa Rica are described using optical and scanning electron microscopy. Costacarabodes turrialbai gen. nov., sp. nov. is a new genus ... -
Revision of the family Carabodidae (Acari: Oribatida) XVI. Synkrotima tsalakpmenoi sp. nov. from Zimbabwe and Kenya, and Congocepheus thailandae sp. nov. from Thailand, including a complementary study of Cavaecarabodes hauseri (Mahunka 1989)
Fernandez, Nestor; Theron, Pieter; Jordaan, Anine; Leiva, Sergio (Magnolia Press, 2018)Synkrotima tsalakpmenoi sp. nov. is described from material collected in Zimbabwe and Kenya. This species presents the following characteristics: notogastral integument formed by longitudinally aligned cuticular cords; ... -
Revision of the family Carabodidae (Acari: Oribatida) XVII. Redescription of Diplobodes africanus Mahunka, 1987 from Kenia. Description of Diplobodes thailande sp. nov. from Thailand and Rwandabodes kayoveae gen. nov., sp. nov. from Rwanda
Fernandez, Nestor; Theron, Pieter; Jordaan, Anine; Lena, Sergio (Magnolia Press, 2019)Diplobodes africanus Mahunka, 1987, is redescribed by using Scanning Electron Microscopy (SEM) in order to complement optical microscopy. Diplobodes thailande sp. nov. from Thailand is described. For both species we include ... -
Sublethal effects of ionic and nanogold on the nematode Caenorhabditis elegans
Bosch, Suanne; Botha, Tarryn Lee; Jordaan, Anine; Maboeta, Mark; Wepener, Victor (Hindawi, 2018)Te nematode Caenorhabditis elegans is used as an ecotoxicological model species in both aqueous medium and solid substrates. It is easy and of low cost to maintain in the laboratory and it produces hundreds of ofspring ... -
Synthesis and characterisation of silver nanoparticles using leaf extract of Artemisia afra and their in vitro antimicrobial and antioxidant activities
Elemike, Elias E.; Onwudiwe, Damian C.; Jordaan, Anine; Ekennia, Anthony C. (IET, 2018)In this study, the conversion of silver ions into ∼30.74 nm sized silver nanoparticles (AgNPs) was achieved in 30 min at a reaction temperature of 80–90°C in aqueous leaf extract of Artemisia afra. The synthesised AgNPs ... -
Synthesis, characterization, and catalytic application of mononuclear and dendritic cationic CuI iminopyridine-ligated complexes in aryl iodide hydroxylation
Mketo, Nomvano; Jordaan, Johan H.L.; Jordaan, Anine; Swarts, Andrew J.; Mapolie, Selwyn F. (Wiley, 2016)A series of mononuclear (C1–C4) and dendritic G1 (DC1–DC4) and G2 (DC5–DC8) cationic CuI iminopyridine complexes of the general formula [Cu{(R-C5H3N)CH=N(nPr)-κ2- N,N}2][BF4] (C1: R = 6-Me; C2: R = H; C3: R = 6-Br; C4: ... -
Tolerance and growth kinetics of bacteria isolated from gold and gemstone mining sites in response to heavy metal concentrations
Oladipo, Oluwatosin Gbemisola; Ezeokoli, Obinna Tobechukwu; Maboeta, Mark Steve; Bezuidenhout, Jacobus Johannes; Tiedt, Louwrens R.; Jordaan, Anine; Bezuidenhout, Cornelius Carlos (Elsevier, 2018)Response and growth kinetics of microbes in contaminated medium are useful indices for the screening and selection of tolerant species for eco-friendly bio-augmentative remediation of polluted environments. In this study, ... -
Ultrastructural comparison of Hepatozoon ixoxo and Hepatozoon theileri (Adeleorina: Hepatozoidae), parasitising South African Anurans
Conradie, Roxanne; Cook, Courtney A.; Du Preez, Louis H.; Jordaan, Anine; Netherlands, Edward C. (Wiley, 2017)To date, only two haemogregarine parasite species have been described from South African anurans: Hepatozoon ixoxo, infecting toads of the genus Scler- ophrys (syn. Amietophrynus); and Hepatozoon theileri, parasitising ...