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02 October 2019 | Story Ruan Bruwer | Photo Hannes Naudé
Pakiso Mthembu and Prof Prakash Naidoo
Pakiso Mthembu (right) receives the trophy as the University of the Free State Senior Sportsman of the Year from Prof Prakash Naidoo, Vice-Rector: Operations. Khanyisa Chawane (Senior Sportswoman of the Year) and Sne Mdletshe (Junior Sportswoman of the Year) was unable to attend the awards function.

Pakiso Mthembu was recognised for his performances in cross-country and Khanyisa Chawane for her feats on the netball court at the KovsieSport Awards function on Tuesday night.

The two were honoured as the University of the Free State’s Senior Sportsman and Sportswoman of the Year for 2019. Achievements between 1 October 2018 and 30 September 2019 were taken into consideration.

Mthembu was South Africa’s second-best senior male athlete at the IAAF World Cross Country Championships in Denmark earlier this year. He also came second in the senior men’s 10 km category of the South African Cross Country Championships and won a bronze medal at the University Sport South Africa Championships in the 10 000 m. It was the seventh consecutive year and ninth time in the last ten years that the men’s winner came from the athletics code.

Chawane has played in 14 of the last 17 tests for the Proteas. She was a member of the World Cup team in July, where they finished fourth – their best performance in 24 years. She also represented the SA Fast5 team and was named as the player of the tournament in the 2018 Varsity Netball competition.

The Junior Sportswoman of the Year award went to another netballer, Sne Mdletshe. She was the co-captain of the SA U20 team for the Africa Union Sport Council Region 5 games in Botswana, which was won by the team. At the National Championship, she was named the best centre-court player. There was no winner in the Junior Sportsman of Year category this year.

News Archive

Prof Tredoux turns theories regarding the formation of metals on its head
2013-09-17

 

Prof Marian Tredoux
17 September 2013

The latest research conducted by Prof Marian Tredoux of the Department of Geology, in collaboration with her research assistant Bianca Kennedy and their colleagues in Germany, placed established theories regarding how minerals of the platinum-group of elements are formed, under close scrutiny.

The article on this research of which Prof Tredoux is a co-author – ‘Noble metal nanoclusters and nanoparticles precede mineral formation in magmatic sulphide melts’ – was published in Nature Communications on 6 September 2013. It is an online journal for research of the highest quality in the fields of biological, physical and chemical sciences.

This study found that atoms of platinum and arsenic create nanoclusters, long before the mineral sperrylite can crystallise. Thus, the platinum does not occur as a primary sulphur compound. The research was conducted at the Steinmann Institute of the University of Bonn, Germany, as well as here in Bloemfontein.

Monetary support from Inkaba yeAfrica – a German-South African multidisciplinary and intercultural Earth Science collaborative of the National Research Foundation (NRF) – made this research possible. Studies are now also being conducted on other metals in the precious metal group, specifically palladium, rhodium and ruthenium.

The discovery of the nanoclusters and the combination with arsenic can have far-reaching consequences for the platinum mine industry, if it can be utilised to recover a greater amount of platinum ore and therefore less wastage ending up in mine dumps. This will signify optimal mining of a scarce and valuable metal, one of South Africa’s most important export products.

For Prof Tredoux, the research results also prove thoughts she already had some twenty years ago around the forming of platinum minerals. “Researchers laughed in my face, but the evidence had to wait for the development of technology to prove it.” Young researchers were very excited at recent congresses about the findings, since the new models can bring new insights.

“Chemistry researchers have been talking about platinum element clusters in watery environments for quite a while, but it was thought that these would not appear in magmas (molten rock) due to the high temperatures (>1 000 degrees celsius).”

Prof Tredoux has already delivered lectures at congresses in Scotland, Hungary, Sweden and Italy on this research.

Read the article at: http://www.nature.com/ncomms/2013/130906/ncomms3405/full/ncomms3405.html

 

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