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The effect of planting density on the wood quality of South African-grown Eucalyptus grandis
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: F.S. MalanThis paper presents the results of a wood property and sawn board quality study performed on disc samples and sawlogs taken from a 23-year-old Eucalyptus grandis Nelder 1a spacing trial at J.D.M. Keet plantation near Tzaneen. Ten trees from each... -
Variation in Wood Properties of Eucalyptus nitens in a Provenance Trial on the Eastern Transvaal Highveld in South Africa
Item type: Journal Article • Journal: South African Forestry Journal • Authors: R.C. Purnell --- D.R. de Wet Forestry Research Centre,Eucalyptus nitens is one of the four important cold-tolerant eucalypts grown for mining timber and pulpwood on the eastern Transvaal highveld in South Africa. In 1983 an active genetic improvement programme was initiated to improve growth rate, stem form and... -
Alternative method for the identification of critical nodes leading to voltage instability in a power system
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Isaiah G. Adebayo --- Department of Electrical Engineering, South Africa Adisa A. Jimoh --- Department of Electrical Engineering, South Africa Adedayo A. Yusuff --- Department of Electrical and Mining Engineering, South Africa Yanxia Sun --- Department of Electrical and Electronic Engineering Science, South AfricaThe introduction of new operation enhancement technologies plus increasing application of power electronics, coupled with the continuous increase in load demand, has increased the risk of power networks to voltage instability and susceptibility to voltage collapse. This frequent occurrence of... -
Future of the IUCN Endangered white steenbras Lithognathus lithognathus (Sparidae) – a tale of two estuaries
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AK Whitfield --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa MKS Smith --- Rhodes University, South AfricaThis review draws on a long history of ichthyological and fisheries research to examine the changing stock status of the estuary-dependent white steenbras Lithognathus lithognathus in the South African Swartkops and Knysna estuaries. The available evidence points to a major...