Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
24 March 2021 | Story Ruan Bruwer | Photo Netball South Africa
Defender Refiloe Nketsa is one of four Kovsies chosen for the South African U21 netball team.

With no less than four Kovsies in the South African Under 21 netball team, the near future for this sport at the University of the Free State (UFS) is certainly on the bright side.

Chanel Vrey, Refiloe Nketsa, Rolene Streutker, and Boitumelo Mahloko will be in action for the Baby Proteas, as the team is known, in a challenge series. The team will battle the President’s XII (a South African A team) and Uganda from 25 March in Cape Town. 

They all played for the Free State senior side last year. Vrey and Streutker also played for the Baby Proteas against international competition in 2019.

Mahloko – a former Kovsie – and Nketsa have also represented South Africa at junior level in the past. They were team members in the national U16 team in 2017, and a year later Mahloko made the U20 team and Nketsa the SA U18 team.

Khanyisa Chawane will also be in action in the series, playing for the Proteas, while former Kovsie captain Alicia Puren has been chosen for the President’s XII.

Meanwhile, two hockey players, Saré Laubscher and Zimkhitha Weston, have been picked for the South African U21 women’s hockey team. They would have participated in the African qualifying tournament in Ghana at the end of March. This tournament has, however, been postponed to January 2022. 

This is the third consecutive year that Laubscher has made the team. Weston, a former Kovsie, played for South Africa at the 2018 Youth Olympic Games in Argentina.

The African Hockey Qualifier serves as qualification for the Junior World Cup, which is scheduled for December in Potchefstroom. South Africa has already qualified as hosts for the Junior World Cup, but the African crown is up for grabs in Ghana. 

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

 

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept