Author:Segobola, J; Adriaenssens, E; Tsekoa, Tsepo L; Rashamuse, Konanani; Cowan, DDate:Jan 2018The Kogelberg Biosphere Reserve in the Cape Floral Kingdom in South Africa is known for its unique plant biodiversity. The potential presence of unique microbial and viral biodiversity associated with this unique plant biodiversity led us to ...Read more
Author:Hutchinson, KA; Swart, S; Ansorge, IJ; Goni, GJDate:Oct 2013Hydrographic data from three research cruises, occupying the GoodHope line in the Atlantic sector of the Southern Ocean, are used to identify and quantify Expendable Bathythermograph (XBT) temperature biases. A set of 148 collocated XBT and ...Read more
Author:Thwala, Melusi; Klaine, S; Musee, NDate:Apr 2021Silver nanoparticles (AgNPs) are favoured antibacterial agents in nano-enabled products and can be released into water resources where they potentially elicit adverse effects. Herein, interactions of 10 and 40 nm AgNPs (10-AgNPs and 40-AgNPs) ...Read more
Author:O'Kennedy, Maretha M; Crampton, BG; Lorito, M; Chakauya, E; Breese, WA; Burger, JT; Botha, FCDate:May 2011Sclerospora graminicola is an Oomycete (heterotrophic Stramenopiles), fungal-like obligate phytopathogen, the causal agent of downy mildew in pearl millet (Pennisetum glaucum [L.] R. Br.), and a major constraint in the production of this ...Read more
Author:Meyers, A; Chakauya, E; Shepard, E; Tanzer, FL; Lynch, A; Williamson, A; Rybicki, EPDate:23 Jun 2008Human immunodeficiency virus type 1 (HIV-1) has infected more than 40 million people worldwide, mainly in sub-Saharan Africa. The high prevalence of HIV-1 subtype C in southern Africa necessitates the development of cheap, effective vaccines. ...Read more
Author:Du Plessis, WP; Odendaal, JW; Joubert, JDate:Sep 2009An extended and rigorous analysis of retrodirective cross-eye jamming in a radar system scenario is presented. This analysis removes the approximations that limit the validity of other analyses of cross-eye jamming. These results imply that ...Read more
Author:Magubane, Z; Tarwireyi, P; Abu-Mahfouz, Adnan MI; Adigun, MDate:Nov 2021The Internet of Things is a network of devices that sense and communicate the sensed data over the internet without human intervention. These devices are resource constrained, perform poor in a complex network. Routing becomes a significant ...Read more
Author:Nahman, AntonDate:2010Extended producer responsibility (EPR) is a policy concept aimed at extending producers’ responsibility for their products to the post-consumer stage of their products’ life cycle. One of the outcomes of an effective EPR programme is to move ...Read more
Author:Duvenhage, B; Bouatouch, K; Kourie, DGDate:May 2011Backward polygon beam tracing methods, that is beam tracing from the light source (L), are well suited to gather path coherency from specular (S) scattering surfaces. These methods are useful for modelling and efficiently simulating caustics ...Read more
Author:Bogaers, Alfred EJ; Kok, S; Reddy, BD; Franz, TDate:Jan 2015In this paper we introduce the idea of combining artificial compressibility (AC) with quasi-Newton (QN) methods to solve strongly coupled, fully/quasi-enclosed fluid-structure interaction (FSI) problems. Partitioned, incompressible, FSI based ...Read more
Author:Taljaard, Susan; Van Niekerk, Lara; Joubert, WRDate:Nov 2009Estuaries are dynamic transition zones acting as filters and transformers of nutrients passing from catchments to the sea. The authors propose an extension to an existing southern hemisphere model on nutrient dynamics in estuaries to include ...Read more
Author:Knoesen, D; Arendse, C; Halindintwali, S; Muller, TDate:Jan 2008One of the prime components of a hot-wire (Cat) Chemical Vapor Deposition system is the filament used to pyro-catalytically crack the gases like silane. Burnt out tantalum filaments were studied to determine the possible improvement of lifetime ...Read more
Author:Peart, RDate:Jan 2001This article reviews the external factors that influence environmental performance of companies in South Africa, drawing on international and local literature. After considering factors within the natural, social, economic and institutional ...Read more
Author:Berger, E; Crampton, Michael C; Nxumalo, NP; Louw, MEDate:Aug 2011Through modification of the flagellin type III secretion pathway of Bacillus halodurans heterologous peptides could be secreted into the medium as flagellin fusion monomers. The stability of the secreted monomers was significantly enhanced ...Read more
Author:Maepa, CE; Jayaramudu, J; Okonkwo, O; Ray, SS; Sadiku, ER; Ramontja, JDate:Apr 2015This article reports on the extraction and characterization of novel natural cellulose fibers obtained from the maize (tassel) plant. Cellulose was extracted from the agricultural residue (waste biomaterial) of maize tassel. The maize tassel ...Read more
Author:Abraham, E; Deepa, B; Pothan, LA; Jacob, M; Thomas, S; Cvelbar, U; Anandjiwala, RDate:Jun 2011The objective of this work was to develop a simple process to obtain an aqueous stable colloid suspension of cellulose nano fibrils from various lignocellulosic fibres. For the preliminary analysis we have studied three different fibres: ...Read more
Author:Malaka, MS; Naidoo, Kersch; Kabuba, JDate:Apr 2017Siphonochilus aethiopicus is an indigenous South African plant also known as African ginger. It has often been used for its medicinal properties to treat various ailments such as flu, colds, and so forth. The research aim of this study was ...Read more
Author:Bode, ML; Buddoo, SR; Minnaar, SH; Du Plessis, CADate:Aug 2008The successful extraction and isolation of the hydrolysed tetraether lipid calditoglycerocaldarchaeol (GDNT) from Sulfolobus etallicus, a key thermophilic bioleaching archaeon, is described. The archaeal biomasswas recovered directly from a ...Read more
Author:Das, Sonali; Hunter, LawranceDate:Feb 2015The objectives of this study are to develop an understanding of fabric quality related issues and research gaps relevant to apparel manufacturing and merchandising within the South African context. The specific focus is on fabric objective ...Read more
Author:Chelopo, MP; Kalombo, Lonji; Wesley-Smith, J; Grobler, A; Hayeshi, RDate:Mar 2017The combination of polymeric nanoparticles (NPs) as a core and lipid vesicles as a shell has emerged to be a robust and promising drug delivery strategy. This study explores the development of a novel combined delivery system where poly d,l, ...Read more