Author:Shillinglaw, SN; Pieterse, AJHDate:1977A dense algal population is of primary importance in sewage maturation ponds for the removal of plant nutrients, especially ammonia and orthophosphate. In the Republic of South Africa and in South West Africa sudden algal population declines ...Read more
Author:Van Rensburg, NJJDate:Jun 1974All cotton, polyester and cotton/polyester blended fabrics containing 80, 60 and 40 percent cotton were treated with trisphosphate or titanium tetrachloride/antimony oxide.Read more
Author:Scott, WEDate:15 Nov 1979As a result of potential toxin production the blue-green alga microcystis aeruginosa is a serious problem in eutrophic impoundments in South Africa. This study reports on growth characteristics of M. aeruginosa in the laboratory and is ...Read more
Author:Snedden, Glen C; Dunn, Dwain I; Von Backström, TW; Ingram, GDate:Jan 2010This study examines the results of a CFD and rotating experiment, comparing an annular and a generic end wall design for a model turbine rotor in a 1½ stage turbine at the CSIR, in an attempt to draw some conclusions regarding the proper ...Read more
Author:Braby, L; Backeberg, Björn C; Ansorge, I; Roberts, MJ; Krug, Marjolaine J; Reason, CJCDate:Aug 2016Analyzing eddy characteristics from a global data set of automatically tracked eddies for the Agulhas Current in combination with surface drifters as well as geostrophic currents from satellite altimeters, it is shown that eddies from the ...Read morecb
Author:Davis-Reddy, Claire LDate:Oct 2017The body of work on historical climate trends has been steadily increasing during the last decade. Global mean annual temperatures have increased by 0.85°C since 1880 and are projected to increase by 0.3 to 2.5 °C by 2050, relative to the ...Read more
Author:Naidoo, Darryl; Ait-Ameur, K; Litvin, I; Fromager, M; Forbes, ADate:May 2012The mode inside a laser cavity may be understood as the interference of two counter-propagating waves, referred to as the forward and backward waves, respectively. We outline a simple experimental procedure, which does not require any additional ...Read more
Author:Krug, Marjolaine J; Cipollini, P; Dufois, FDate:Jun 2014The Agulhas Current is a challenging region for satellite remote sensing observations. Strong evaporation rates above the current core and the Retroflection reduce the number of cloud-free observations from Infra-Red sensors, while microwave ...Read more
Author:Davel, M; Barnard, EDate:Nov 2005In this paper the authors describe a new approach to rewrite rule extraction and analysis, using Minimal Representation Graphs. This approach provides a mechanism for obtaining the smallest possible rule set – within a context-dependent rewrite ...Read more
Author:Wokadala, OC; Ray, Suprakas S; Naushad Emmambux, MNDate:Sep 2012The occurrence of amylose–lipid complexes was determined in maize and teff starch biphasic pastes i.e. peak viscosity pastes at short and prolonged pasting times. Maize and teff starches were pasted for 11.5 and 130 min with or without added ...Read more
Author:Abia, ALK; Ubomba-Jaswa, Eunice; Momba, MNBDate:Aug 2016In most developing countries, especially in Southern Africa, little is known about the presence of diarrhoeagenic Escherichia coli (DEC) pathotypes in riverbed sediments. The present study sought to investigate the presence of DEC virulence ...Read more
Author:Kunstman, FH; Hamersma, JCDate:1955The chemical behavior of germanium has been studied extensively but its present economic value results from its physical properties.Read more
Author:Kunstmann, FH; Harris, JFDate:1966Apart from the major constituents of the ash of a coal, every coal contains a great number of trace elements. In many cases the suitability of a coal for certain purposes depends on the concentration of these trace elements in the coal. The ...Read more
Author:Cook, APDate:Oct 1998The review output of the project comprised three main sections, literature, gas incidents and accidents, and technical interviews with mine personnel. Literature covered combustible gas emissions in mining operations in South Africa and ...Read more
Author:Robertson, Lain, L; Bernard, S; Smith, Marie EDate:Jan 2021Harmful algal blooms (HABs) occur in virtually all coastal regions of the world as well as many lakes, and are typically associated with a rapid proliferation of phytoplankton cells, but even low cell numbers of high toxic species may cause ...Read more
Author:Bernard, Stewart; Pitcher, G; Evers-King, H; Robertson, L; Matthews, M; Rabagliati, A; Balt, CDate:2014The Benguela, as a highly productive upwelling system, suffers from the occurrence of a variety of harmful algal blooms, most of which are associated with elevated biomass; a feature common to the shelf environment of upwelling systems. Most ...Read more
Author:Krug, Marjolaine J; Swart, S; Hermes, JDate:Jun 2018Off the east coast of South Africa, robotic ocean gliders deployed in the Agulhas Current capture new data that help us better understand how energy dissipates in the ocean.Read more
Author:Swart, S; Zietsman, JJ; Coetsee, JC; Goslett, Daniel G; Hoek, A; Needham, D; Monteiro, Pedro MSDate:Dec 2016South Africa’s small pelagic fishery is an important component of the country’s commercial fisheries sector, second in value only to the demersal trawl fishery. Management of this sector relies on frequent hydro-acoustic surveys, which provide ...Read more
Author:Swart, S; Monteiro, Pedro MS; Zietsman, H; Goslett, Daniel G; Coetzee, JDate:Oct 2015South Africa’s exclusive economic zone (EEZ) covers over 1.5 million km2 and comprises the remote waters around the Prince Edward Islands in the Southern Ocean. The benefits of an EEZ come with the responsibility of managing its resources, ...Read more