Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
14 February 2018 Photo Varsity Cup
Shimlas make it two out of three
Menzi Nhlabathi, flank of the Shimlas, celebrates his try against Wits.

The Shimlas are back in the top half of the Varsity Cup log thanks to a second win in three matches.

They recorded a 44-24 victory over Wits at Shimla Park on Monday night, a team who have been in red-hot form with wins over the Ikeys and Tuks in the first two rounds.

Wits had the upper hand shortly before half time when they led by 12-5, but four tries within 15 minutes, two of them seven pointers, took the wind out of their sails and turned a 5-12 deficit into a 35-12 lead for the Shimlas.

From there the Blue Train never looked back, although Wits closed the gap to 24-35 towards the end, but at that stage the win was already sealed. Flyhalf Nakkie Naudé scored nearly half (20 points) of his team’s total which included two tries.

Next up for the Shimlas is a clash with the Ikeys in Cape Town on Monday.

Vishuis and U-20 also on the winning side

Meanwhile the Shimlas U-20 team won their opening fixture against their counterparts of the North-West University. The Shimlas Young Guns under new head coach, Wian du Preez, were victorious by 47-37. They will be in action again on 26 February 2018 when they face the Young Guns of the Central University of the Free State (CUT) at Shimla Park.

Vishuis, who represents the University of the Free State in the competition for hostels, opened the defence of their title with a 42-0 thumping of the Lions of CUT.

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