Author:Erasmus, C; Jacobs, A; Lombard, GE; Van Zyl, PJ; Reddy, JS; Nkomo, N; Timme, EMDate:Jan 2007Development of fermentation process for EPA production: The effect of fungal growth conditions on morphology and EPA production. Fungal pellets in submerged culture vary in size, texture and shape: from ellipsoidal ball shape to a biconcave ...Read more
Author:Durrheim, RJ; Cooper, GRJDate:Jul 1998Measurements of the geomagnetic field can be used to help determine the structure of the Earth, since rocks often contain magnetic minerals. Measurements of the strength of the Earth's gravitational field can also be used, since the more dense ...Read more
Author:Combrinck, ML; Dala, LN; Lipatov, IDate:Jul 2015This paper presents an Eulerian derivation of the noninertial Navier-Stokes equations for compressible flow in constant, pure rotation. The method that is presented is an extension of work done by Kageyama & Hyodo where the momentum equation ...Read more
Author:Combrinck, MA; Dala, LNDate:Sep 2014The paper presents an Eulerian derivation of the non-inertial Navier-Stokes equations as an alternative to the Lagrangian fluid parcel approach. This work expands on the work of Kageyama and Hyodo [1] who derived the incompressible momentum ...Read more
Author:Funke, Nicola S; Jacobs-Mata, Inga M; Nortje, Karen; Claassen, Marius; Steyn, MaronelDate:Oct 2010The interconnectedness of biodiversity and sustainable livelihoods for many societies around the world is constructed by the complexities of vulnerability and resilience. Society is faced by a plethora of challenges that include poverty ...Read more
Author:Steyn, DJ; Toerien, DF; Visser, JHDate:Jan 1976Algal bioassays indicated that the waters of Roodeplaat dam are severely eutrophied since algal growth potentials (AGP) of up to 200 mg/l and batch culture algal growth rate of up to 2,2 d were registered with selemastrm capricornutum as test ...Read more
Author:Matthews, MW; Bernard, StewartDate:May 2015Satellite remote sensing can make a significant contribution to monitoring water quality in South African standing water bodies. Eutrophication, defined as enrichment by nutrients, and toxin-producing cyanobacteria (blue-green algae) blooms ...Read more
Author:Oberholster, Paul J; Madlala, Tebogo E; Blettler, MCM; Amsler, ML; Eberle, EG; Botha, ADate:Mar 2018The eutrophication of waterways has become an endemic global problem. Nutrient enrichment from agriculture activities and waste water treatment plants are major drivers, but it remains unclear how lowland sandy rivers respond to eutrophication. ...Read more
Author:Steyn, DJ; Toerien, DF; Visser, JHDate:Apr 1976The purpose of this study was to determine the present eutrophication levels of the Vaal dam, to determine how it might be affected by increased discharged of secondary treated sewage effluentsRead more
Author:De Koker, EDate:Jul 2003Large numbers of South African mineworkers incur noise-induced hearing loss (NIHL), which is recognized as a compensable disease by COIDA (Compensation for
Occupational Injuries and Diseases, 1993 (Act 130 of 1993)). The prevalence of NIHL ...Read more
Author:Bredenkamp, IE; Kritzinger, E; Herselman, Martha EDate:Nov 2022As a developing country, South Africa (SA) seems to lack a balance between trust consumers place in organizations with whom they share their personal information to obtain goods and services and the degree to which that consumer confidence ...Read more
Author:Herselman, Martha E; Botha, Adèle; Maremi, Keneilwe JDate:Jul 2019The purpose of this paper is to evaluate a specific mobile technology rural schools project known as ICT4E in South Africa to determine if it complies to be regarded as an innovative educational ecosystem. The criteria that were used were ...Read more
Author:Hlela, S; Coetzee, S; Cooper, Antony KDate:Sep 2016Spatial data infrastructure (SDI) facilitates the collection and sharing of geographic information developed by different organisations. As a result, SDI initiatives are occurring in different countries. Various government departments are ...Read more
Author:Abu-Mahfouz, Adnan MI; Hancke, GPDate:Sep 2013Most of the proposed localisation algorithms studied the problem of location discovery in a non-adversarial environment. Although these types of algorithm are vulnerable to several types of security attack, less work has been done to implement ...Read more
Author:Herselman, Martha E; Botha, AdèleDate:Sep 2015In this paper, we describe the iterative evaluation of an artifact developed through the application of Design Science Research (DSR) methodology in a resource constrained environment. In the DSR process the aspect of evaluation is often done ...Read more
Author:Greeff, M; Coetzee, L; Alberts, R; Easton, HDate:Nov 2008Access to information empowers people when making decisions in their every day life. In South Africa, one of the most prominent problems that persons with disabilities face, is access to disability-related information. The South African ...Read more
Author:Semelane, Maphumzane S; Nwulu, N; Kambule, N; Tazvinga, HDate:Aug 2021The global energy transition may have unintended consequences for businesses that provide services to the coal sector. Businesses operating in coal regions like Steve Tshwete Local Municipality (STLM) might be left stranded due to the coal ...Read more
Author:Dzivhani, Mulalo; Soganile, N; Bembe, MncedisiDate:Sep 2016Long Term Evolution Advanced (LTE-Advanced) networks enables the use of new and wider radio frequency spectrum and other new technologies that facilitates high data rates and lower latency. Furthermore, LTE-Advanced adopt the use of small ...Read more