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20 December 2020
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Story Thabo Kessah
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Photo Thabo Kessah
Mbuyiselwa Moloi with student volunteers, Keamogetswe Mooketsi (presenter), Tshumelo Phaladi (producer), and Siphamandla Shabangu (SRC member – Social Justice and Universal Access).
The month of October 2020 marked the first anniversary of the Qwaqwa Campus online student radio, Q-Lit. “It has been a rocky road of sleepless nights, tears, and a lot of challenges. However, we have grown from strength to strength. We have made dreams of ordinary students possible. We have influenced change and inspired students to tap into their talents and potential,” said an elated station manager, Mbuyiselwa Moloi.
The station came in handy during the worst lockdown period of the COVID-19 pandemic when it bridged the communication gap between students and the university to integrate teaching and learning into the programming to ensure that no student was left behind. “With all of the regulations and online learning, Q-Lit had to be reinvented. While it was not an easy journey, we have grown more than ever before. Our August 2020 report shows that we have pulled in more than 1 600 listeners, even amid the learning, unlearning, and relearning processes. It was during this month that we also ran a series highlighting strategic offices led by women on campus as part of our Women’s Month celebration,” Mbuyiselwa revealed.
Looking to the future, the station hopes to obtain a full broadcasting licence from the regulatory body, the Independent Communication Authority of South Africa (ICASA), soon.
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