Latest News Archive
Please select Category, Year, and then Month to display items
06 November 2020
|
Story Rulanzen Martin
|
Photo Supplied
Dr Tronél Hellberg, UFS alumna, completed her PhD in Music from the OSM in 2018.
The COVID-19 pandemic and subsequent lockdown has posed many challenges. Not only has it distrupted our normal way of life it but has created a ‘new normal.’ Even in these trying times, alumni from the University of the Free State (UFS) have adjusted to the new normal by going above and beyond to make it as normal as possible.
One of these is Dr Tronél Hellberg, an alumna from the
Odeion School of Music at the UFS, who has supported Grade 12 learners by presenting free online prescribed music theory classes. The classes are beneficial for learners following the CAPS or IEB curriculum. “I trust the online videos will assist learners and teachers to get through this challenging Grade 12 year,” says Dr Hellberg. She has
recorded more than 38 live videos on her
G-Sential Theory of Music Facebook page.
The recordings are accessible to Grade 12 learners and their teachers at no cost. Dr Hellberg established the
G-Sential Theory of Music in 2007 and has since published 20 theory of music books.
Apart from assisting in teaching, one of her main objectives is to reach less fortunate learners who do not have access to music teachers. “Grade 12 music literacy requires an accumulative understanding of theory of music,” she says. With her initiative she also aims to “fill any gaps” to solidify knowledge and information which might still be unclear.
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