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26 January 2019
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The executive management of the University of the Free State (UFS) has noted with concern the disconcerting effects of the current political and economic crisis and instability in Zimbabwe – specifically with regard to the effect it has on its students from Zimbabwe.
“As part of a coordinated support effort driven by the UFS Office for International Affairs we have invited Zimbabwean students to communicate their individual challenges regarding finance, travel, and special examinations to us.
We have received various reports about problems with delayed visas and have appealed to the Department of Home Affairs to consider concessions for our affected Zimbabwean students,” says Mr Cornelius Hagenmeier, Director of the university’s Office for International Affairs.
Arrangements are being made on a case-by-case basis for students who were unable to register before the closing date. Students who have reported travel challenges are also being contacted individually to consider possible support.
“As an institution committed to the furtherance of social justice – not only on our campuses, but also in the wider Southern African region – the UFS wants to encourage our affected students not to abandon their all-important education plans in the light of the turmoil and obstacles they are currently facing. As a university community, our heartfelt sympathy goes to our Zimbabwean students and their families during these trying times,” says Prof Francis Petersen, UFS Rector and Vice-Chancellor.
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Telephone: +27 51 401 2584 | +27 83 645 2454
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Prof Tredoux turns theories regarding the formation of metals on its head
2013-09-17
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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