Author:Landman, WA; Engelbrecht, F; Park, R; Bopape, Mary-Jane M; Lötter, DDate:01 Sep 2010Daily weather forecasts are skilful and are initial-value problems, while at the seasonal time scale, slowly varying surface forcing, for example from the tropical Pacific Ocean, can induce atmospheric anomalies that are sufficiently long-lasting ...Read more
Author:Landman, WA; Engelbrecht, FA; McGregor, JL; van der Merwe, JHDate:Oct 2014Three aspects of seasonal forecast modelling when using an atmospheric general circulation model (AGCM) are presented in this paper. The first aspect deals with the verification of simulations created by forcing the AGCM at its lower boundary ...Read more
Author:Tyson, PD; Kruger, FJ; Louw, CWDate:Apr 1988This report is a review of available information on the dispersion climatology, the degree of atmospheric pollution and the various impacts of that pollution on man and environment in the Eastern Transvaal Highveld (ETH) and adjacent regions. ...Read more
Author:Olbrich, K; Skoroszewski, R; Van Tienhoven, MDate:Mar 1996This paper aims to address and integrate the three main components of the air pollution problem in South Africa: assessment and measurement of air quality, evaluation of the effects of poor air quality, and management of air quality.Read more
Author:Sivakumar, V; Delmas, RDate:Sep 2009In the present context of global changes, atmospheric and climatic research should be more organized in the framework of international collaborations and research networks. In this paper, researchers provide details about the instrument to ...Read more
Author:Edholm, JM; Swart, S; Plessis, Marcel D; Nicholson, Sarah-AnneDate:Aug 2022Atmospheric rivers (ARs) dominate moisture transport globally; however, it is unknown what impact ARs have on surface ocean buoyancy. This study explores the surface buoyancy gained by ARs using high-resolution surface observations from a ...Read more
Author:Sithole, Happy M; Ngoepe, PE; Wright, KDate:Oct 2003Interatomic potential parameters have been derived at simulated temperatures of 0 K and 300 K to model pyrite FeS2. The predicted pyrite structures are within 1% of those determined experimentally, while the calculated bulk modulus is within ...Read more
Author:Ngoepe, PE; Ntoahae, PS; Mangwejane, SS; Sithole, Happy M; Parker, SC; Wright, KV; De Leeuw, NHDate:Sep 2005The authors present the results of atomistic simulations using derived interatomic potentials for the pyrite-structured metal chalcogenides FeS2, PtSb2 and PtAs2. Structural and elastic constants were calculated and compared with experimental ...Read more
Author:Mkhonto, D; Ngoepe, PE; Cooper, TG; de Leeuw, NHDate:Apr 2006Apatite coexist in mineral ore deposits with other calcium-bearing minerals such as calcium phosphate, calcium carbonate, calcium fluorite. Apatite need to be separated from these by flotation process. Surfactant molecules with long hydrophobic ...Read more
Author:Ramotsoela, DT; Hancke, GP; Abu-Mahfouz, Adnan MIDate:Apr 2019The threat to critical water system infrastructure has increased in recent years as is evident from the increasing number of reported attacks against these systems. Preventative security mechanisms are often not enough to keep attackers out ...Read more
Author:Turpie, DWFDate:Feb 1978The length characteristics of wool tops which had been produced from thirty different wools from a range of breeds were measured on the Almeter and compared with results obtained by the single fibre length method.Read more
Author:Candy, LP; Lasenby, JDate:2011Several applications require the tracking of attitude and position of a body based on velocity data. It is tempting to use direction cosine matrices (DCM), for example, to track attitude based on angular velocity data, and to integrate the ...Read more
Author:Van Zyl, JE; Labuschagne, FJJDate:Jul 2008When a country, province or municipality wants to have a integrated public transport system in place, all modes of transport should work together with the aim of moving passengers effectively and hassle free to and from their destinations. ...Read more
Author:Shingange, Katekani; Swart, HC; Mhlongo, Gugu HDate:Apr 2018Herein, we present ZnO rose-like hierarchical nanostructures employed as support to Au nanoparticles to produce Au functionalized three dimensional (3D) ZnO hierarchical nanostructures (Au/ZnO) for NO2 detection using a microwave-assisted ...Read more
Author:Linganiso, EC; Mwakikunga, Bonex W; Mhlanga, SD; Coville, NJDate:Nov 2014Nickel sulphide (NiS) nanostructures decorated with gold (Au) nanoparticles (NPs) were synthesized via a microwave-assisted hydrothermal technique. Binary phase NiS (a and ß) crystalline nanostructures, bare, and decorated with Au NPs were ...Read more
Author:Bidwell, NJ; Winschiers-Theophilus, HDate:Oct 2012There are mismatches between indigenous knowledge (IK) and the media, representations and abstractions used to gather and depict IK in an increasing number of projects in Africa. We describe new studies that continue our efforts to digitally ...Read more
Author:Leinonen, T; Aucamp, FN; Sari, ERDate:Sep 2006In this paper, authors describe the idea of Audio Wiki – community information system that can be used with mobile phone. Authors also present the design and development of MobilED server empowering the Audio Wiki. The MobilED server makes ...Read more
Author:Spottiswoode, SMDate:Jun 1997The annual reports of 1993 and 1994 and the final project report, marked DRAFT and
dated April 1996, were used as a measure of the work done under GAP017. The
reports were assessed on their own merit and according to the GAP017 project
proposal ...Read more
Author:Govender, Devashen; Moodley, Jayandren; Balmahoon, ReevanaDate:Oct 2021In today’s era, enormous amounts of data are generated and the means to visualize this data is becoming a challenge. Data visualization is an important support tool that allows one to make informed decisions. This paper attempts to provide a ...Read more