Browsing Faculty of Science by Title

Now showing items 1-20 of 1575

  • 11th Marion Relief Team members 

    Albertyn, Chris (Stellenbosch : Antarctic Legacy Project, 2011-10-05)
    Video footage of M11 and M12 team members during take over. Left to right: W. Thiele (M11, Mechanic), C.J Grobler (M11, Meteorologist) and Barry Jackson (M12, Mechanic).

  • 11β-Hydroxyandrostenedione returns to the steroid arena : biosynthesis, metabolism and function 

    Bloem, Liezl M.; Storbeck, Karl-Heinz; Schloms, Lindie; Swart, Amanda C. (MDPI, 2013-10)
    The biological significance of 11β-hydroxyandrostenedione (11OHA4) has eluded researchers for the past six decades. It is now known that 11OHA4 is biosynthesized in the androgen arm of the adrenal steroidogenesis pathway ...

  • 27th Gough Expedition 

    Bonnet, Casper (Stellenbosch : Antarctic Legacy Project, 2011-10-05)
    Photographic slideshow of the 27th Gough Expedition.

  • 33rd Marion Island Expedition 

    Rowswell, Dudley (Stellenbosch : Antarctic Legacy Project, 1976)
    Dudley Rowswell's film of his year on Marion Island as a member of the 33rd expedition.

  • 3D numerical techniques for determining the foot of a continental slope 

    Pantland, Nicolette Ariana (Stellenbosch : Stellenbosch University, 2004-12)
    ENGLISH ABSTRACT: The United Nations Convention on the Law of the Sea (UNCLOS) provides an opportunity for qualifying coastal signatory states to claim extended maritime estate. The opportunity to claim rests on the ...

  • 3D position estimation of sports players through multi-view tracking 

    Vos, Robert (Robbie) (Stellenbosch : University of Stellenbosch, 2010-12)
    ENGLISH ABSTRACT: Extracting data from video streams and using the data to better understand the observed world allows many systems to automatically perform tasks that ordinarily needed to be completed by humans. One ...

  • A 3D Virtual Environment Development Platform for ASD Therapy Tools 

    Chamberlain, Morne Edward (Stellenbosch : University of Stellenbosch, 2009-12)
    ENGLISH ABSTRACT: The aim of this thesis is to develop a generic 3D virtual environment development platform for autism spectrum disorder (ASD) therapy tools. The potential of using computerised therapy tools for ASD ...

  • A fully dissociated compound of plant origin for inflammatory gene repression 

    De Bosscher, Karolien; Van den Berghe, Wim; Beck, Ilse M. E.; Van Molle, Wim; Hennuyer, Nathalie; Hapgood, Janet; Liber, Claude; Staels, Bart; Louw, Ann; Haegeman, Guy (PNAS, 2005-11)
    The identification of selective glucocorticoid receptor (GR) modifiers, which separate transactivation and transrepression properties, represents an important research goal for steroid pharmacology. Although the gene-activating ...

  • AB diblock copolymers via RAFT-mediated miniemulsion polymerization 

    Bailly, Nathalie (Stellenbosch : Stellenbosch University, 2008-12)
    The Reversible addition fragmentation chain transfer (RAFT) technique is a robust and versatile technique that enables the synthesis of polymers of controlled molecular weight and polydispersity. The application of the ...

  • An Ab Initio density functional study of the structure and stability of transition metal ozone complexes 

    Venter, Gerhard (Gerhard Abraham) (Stellenbosch : Stellenbosch University, 2002-12)
    ENGLISH ABSTRACT: A thorough search through the literature as well as through the Cambridge Crystallographic Structural Database resulted in no examples of a neutral ozone acting as ligand in a complex with any metal. ...

  • The ability of terrestrial Oligochaeta to survive in ultramafic soils and the assessment of toxicity at different levels of organisation 

    Maleri, Rudolf A. (Stellenbosch : University of Stellenbosch, 2006-12)
    Metals are natural elements of the earth crust usually present at low concentrations in all soils. Although many metals such as cobalt, copper, iron and zinc are essential to living organisms, at elevated concentrations ...

  • Abrogation of glucocorticoid receptor dimerization correlates with dissociated glucocorticoid behavior of compound A 

    Robertson, Steven; Allie-Reid, Fatima; Vanden Berghe, Wim; Visser, Koch; Binder, Anke; Africander, Donita; Vismer, Michael; De Bosscher, Karolien; Hapgood, Janet; Haegeman, Guy; Louw, Ann (HighWire Press, 2010-03)
    Compound A (CpdA), a dissociated glucocorticoid receptor modulator, decreases corticosteroid-binding globulin (CBG), adrenocorticotropic hormone (ACTH), and luteneinizing hormone levels in rats. Whether this is due to ...

  • Accident at sea in which Petty Officer Bold drowned 

    Albertyn, Chris (Stellenbosch : Antarctic Legacy Project, 2011-10-05)
    Film footage of the accident at sea in which Petty Officer Bold lost his life. The men were transporting goods to be offloaded on the Marion Island coast and the boats capsized.

  • Acclimation effects on thermal tolerance in ameronothrid mites at sub-Antarctic Marion Island 

    Deere, Jacques Andries (Stellenbosch : Stellenbosch University, 2005-12)
    ENGLISH ABSTRACT: Evidence for widespread ecological impacts due to rapid climate change is on the increase, with further warming predicted over the next century. This increase in warming has lead to organisms adjusting ...

  • Accurate camera position determination by means of moiré pattern analysis 

    Zuurmond, Gideon Joubert (Stellenbosch : Stellenbosch University, 2015-03)
    ENGLISH ABSTRACT : We introduce a method for determining the position of a camera with accuracy beyond that which is obtainable through conventional methods, using a single image of a specially constructed calibration ...

  • Acolein in wine : bacterial origin and analytical detection 

    Bauer, Rolene (Stellenbosch : University of Stellenbosch, 2010-03)
    ENGLISH ABSTRACT: Wine quality is compromised by the presence of 3-hydroxypropionaldehyde (3-HPA) due to spontaneous conversion into acrolein under wine making conditions. Acrolein is highly toxic and is presence has ...

  • Acute simulated hypoxia and ischemia in cultured C2C12 myotubes : decreased phosphatidylinositol 3-kinase (PI3K)/Akt activity and its consequences for cell survival 

    Thomas, Mark Peter (Stellenbosch : Stellenbosch University, 2008-12)
    Cells are equipped with an array of adaptive mechanisms to contest the undesirable effects of ischemia and the associated hypoxia. Indeed, many studies have suggested that there is an increase in the PI3K/Akt pathway ...

  • Adamantane copolymers 

    Coetzee, Liezel (Stellenbosch : Stellenbosch University, 2001-12)
    ENGLISH ABSTRACT: This study concerns the incorporation of adamantane containing monomers 3-(1-adamantyl)-1-propene and 1-(1-adamantyl)-4-vinylbenzene into ethene, propene and higher a-olefins using different catalytic ...

  • An adaptive feature-based tracking system 

    Pretorius, Eugene (Stellenbosch : University of Stellenbosch, 2008-03)
    In this paper, tracking tools are developed based on object features to robustly track the object using particle filtering. Automatic on-line initialisation techniques use motion detection and dynamic background modelling ...

  • Adaptive occupancy grid mapping with measurement and pose uncertainty 

    Joubert, Daniek (Stellenbosch : Stellenbosch University, 2012-12)
    ENGLISH ABSTRACT: In this thesis we consider the problem of building a dense and consistent map of a mobile robot’s environment that is updated as the robot moves. Such maps are vital for safe and collision-free ...