Author:Malcolm, HGDate:1984This paper deals with the diatoms flora of the Hog's Back region of the Amatola Mountains in the Eastern Cape Province, South Africa. These mountains form part of the Great winterberg Range which constitutes a portion of the escarpment of the ...Read more
Author:Joshnson, CTDate:1983A description for the flora is given. The anther is characterized by a prominent oil gland at the tip of the connective. The structure of the seed coat of the fertile and sterile seed differs. Most of the integumental tissue is destroyed ...Read more
Author:Sevenster, PGDate:1963The influence of moisture on the course of the oxidation or spontaneous heating of coal has been widely discussed in the literature but few authors have been drawn definite conclusions regarding the nature and extent of such an influence.Read more
Author:La Grange, CCDate:1944This report described work done at the Institute to ascertain whether South African coals could be used in the preparation of carbonaceous zeolites. The object of the present investigation was to determine whether South African coal would ...Read more
Author:Giffen, MHDate:1966The diatom flora of the marine littoral of South African coatal river estuaries is very superficially known. In a previous contribution (Giffen 1963) the author dealt with the diatoms of the Eastern Cape Province estuaries namely the Gulu ...Read more
Author:Pelders, Jodi L; Nelson, GDate:Mar 2019Fatigue is a significant concern in the mining industry as it is a causal or contributing factor in many incidents and accidents. Fatigue can be caused by work- and non-work-related factors. There is a lack of information about associations ...Read more
Author:Pelders, Jodi L; Nelson, GDate:Jun 2019Mine workers in South Africa face challenges relating to poor health and safety, including fatigue risks, and poor socioeconomic and living conditions. Fatigue results in impaired mental and physical performance. The aim of this study was to ...Read more
Author:Rubin, N; Roos, T; Wilson, F; De Villiers, J; Perumal, SDate:May 2012Modelling, Identification, Simulation and Synthesis are well known components of the System Engineering Process. Ally these with the Target Aligned (TA) heliostat architecture and the universally acknowledged merits of using closed loop ...Read more
Author:Dala, LDate:Aug 2014The aviation industry’s interest towards cavity control methods rose accordingly due to the acoustic attenuation potential of such methods. However cost effective control devices which are also efficient over a wide range aircraft operations ...Read more
Author:Nkosi, SS; Lafane, S; Masina, Bathusile N; Ndwandwe, OMDate:Dec 2016The magnetic properties of paramagnetic/weakly ferromagnetic films are strongly affected by the proximity to materials that undergo a metal to insulator phase transition. Here, we show that under the deposition conditions associated with ...Read more
Author:Deksissa, T; Ashton, PJ; Vanrolleghem, PADate:Mar 2003Using a simple conceptual dynamic river water quality model, the effects of different basin-wide water quality management options on downstream water quality improvements in a semi-arid river, the Crocodile River (South Africa) were investigated. ...Read more
Author:Litvin, Ihar; King, Gary RDate:Aug 2018We propose the technique for a controllable manipulation of the transverse intensity distribution of an output beam by the temporal adjustment of a transverse gain profile in a laser amplifier. It was created by an independent manipulation ...Read more
Author:Dudley, Angela L; Schulze, C; Roux, FS; Duparré, M; Forbes, ADate:Jun 2013In this work we present a mechanism for generating superpositions of non-canonical, higherorder Bessel beams, which are characterized by the anisotropy of the optical vortex on the propagation axis, known as the morphology parameter. We ...Read more
Author:Aderibigbe, BA; Sadiku, ER; Jayaramudu, J; Ray, SSDate:Oct 2014The potential of gum acacia containing hydrogels as controlled dual-drug delivery systems for antiprotozoal agents was investigated. 4-Aminoquinoline analog and curcumin were selected as model drugs because they exhibit antiprotozoal activity. ...Read more
Author:Van Schoor, Michael; Nienaber, WC; Marais-Werner, ADate:Jun 2017A controlled three-dimensional ground penetrating radar monitoring study over simulated clandestine graves was conducted near Pretoria, South Africa, in which the detectability of graves as a function of post-burial interval was assessed, as ...Read more
Author:Mamushiane, Lusani; Mwangama, J; Lysko, Albert ADate:Mar 2021Software Defined Networking (SDN) has emerged as a promising solution to revolutionize network deployment, operations and economic growth. This paradigm aims to address management and configuration complexities in legacy networks so as to ...Read more
Author:Sithole, Bishop B; Doucette, M; Fiolet, RDate:Jun 2015Troubleshooting of scale deposits and defects in paper samples showed that the problem was caused by barium sulphate and calcium sulphate scales. However, it was ascertained that barium sulphate was more of a concern than calcium sulphate as ...Read more
Author:Dudley, Angela L; Vasilyeu, R; Belyi, V; Khilo, N; Ropot, P; Forbes, ADate:Sep 2011In this work we investigate the structure of nondiffracting speckle fields, both experimentally and theoretically. We are able to produce very good agreement between the experimentally recorded and theoretically calculated fields by using ...Read more