Author:Cowling, RM; Le Maitre, David C; McKenzie, B; Prys-Jones, RP; Van Wilgen, BWDate:1987This volume comprises invited review and research papers dealing with the effects of disturbance on the dynamics of fynbos biome communities. Since fire is the most important disturbance factor in the biome, most contributions concentrate ...Read more
Author:Mkhwanazi, M; Landman, WA; Engelbrecht, FA; Olivier, CDate:Sep 2015The study assesses the impacts of anthropogenic forcing on seasonal streamflows over northeastern South Africa by using both dynamically and statistically downscaled multi-decadal climate change projections. The statistical model approach is ...Read more
Author:Cooper, Antony K; Eloff, C; Schmitz, PMUDate:Aug 2010This position paper was drafted shortly after the first meeting of the Committee for Spatial Information (CSI), because it was obvious from that first meeting that most of the members of the CSI had little knowledge of spatial data infrastructures ...Read more
Author:Bonapace, ACDate:1971The drag coefficient of a solitary particle when moving relative to a fluid, when rising or falling vertically in a stationary fluid, is a well-known function of the particle Reynolds number.Read more
Author:Heim, FC; Van Doornum, GAWDate:1973A ford Trader diesel engine was operated on the dual fuel system, using diesel oil and methane. A considerable reduction in smoke generation and power loss could be obtained under operation at high altitude by replacing approximately 25% of ...Read more
Author:Heim, FO; Clark, DDate:1977In view of the desire to conserve oil products, it was decided to attempt to use ethyl alcohol in the place of petrol in a duel-fuel operated diesel engine. Apart from the change of fuel, test conditions have been as described in Report No. ...Read more
Author:Van Rensburg, NJJDate:Dec 1972The use of titanium tetrachloride and antimony oxide as flame-retarding agents for cotton was investigated.Read more
Author:Silver, HMDate:May 1974A method of dyeing cotton with the monochlorotriazine of reactive dyes from a charged perchloroethylene solution is described.Read more
Author:Silver, HMDate:Jun 1974Methods of dyeing cotton with the acryloylamide and trichloropyrimidine classes of reactive dyes from a charged perchloroethylene solution are described.Read more
Author:Silver, HMDate:Jun 1974Methods of dyeing cotton with the acryloylamide and trichloropyrimidine classes of reactive dyes from a charged perchloroethylene solution are described.Read more
Author:Brandt, JPMDate:Sep 1977The suitability of certain reactive disperse dyes and acid dyes for dyeing Nylon 66 from an aqueous charged perchloroethylene system was investigated.Read more
Author:Roesstorff, L; Swanepoel, OADate:Jul 1970A charge consisting of a mixture of an anionic surfactant, an alkylolamide and water is described which can be used for the emulsification of a large number of wool dyestuffs in perchlorethylene medium.Read more
Author:Ferrar, AADate:1989This document contains the proceedings of a workshop which was convened to debate the ecological flow requirements of South African rivers. Topics which are discussed include the influence of weirs and impoundments, the quantity requirements ...Read more
Author:Gandar, MVDate:Nov 1983An annotated checklist is given of 60 species of Acridoidea which were found on the Nylsvley Nature Reserve. The density of a species may change greatly over small distances, altering the population species composition. Vegetation structure ...Read more
Author:O'Keeffe, JHDate:1986Ecological research on South African rivers has progressed in a number of phases. Until 1950 work was mainly taxonomic and descriptive, an essential prerequisite for more detailed studies. The realisation that South African rivers, a vital ...Read more
Author:Wehmeyer, ASDate:Aug 1986Transporting fresh material, with as little deterioration as possible from the field to the laboratory is always a problem. This is especially the case with soft fruits which are easily bruised and leaves which quickly lose moisture. Fruits ...Read more
Author:Grindley, JRDate:Dec 1982This report provides historical information on Eerste River, catchment, abiotic and biotic characteristics. The Eerste River rises on Dwarsberg 60 km east of Cape Town as the head of Jonkershoek. The river catchment covers the eastern part ...Read more
Author:Galuszynski, SDate:Jul 1984A new method, allowing to stimulate the yarn assembly in a woven fabric for measuring yarn to yarn frictional force, is described.Read more