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04 August 2020 | Story Dr Nitha Ramnath

Apart from its devastating impact on people’s lives and livelihoods, the COVID-19 pandemic has also affected the nature and quality of our democracies – democracy read in its widest sense here as collective and individual self-determination. Formal, institutional democracy has beencurtailed through the imposition of states of emergency or disaster and the logistical difficulties associated with social distancing. Extra-institutional democratic work, such as protest and social-movement activity, has suffered from prohibitions imposed by law and through state suppression related to ‘lockdown’. The nature (and perhaps democratic quality) of public conversation has changed – for better or worse – from increasing reliance on ‘science’ and ‘scientists’ to justify public choices. The crisis has brought to the fore already existing characteristics of our democracies, such as the prevalence and power of special-interest bargaining, the extreme inequality of our societies, and chauvinist nationalisms that force us to ask whether we have ever had democracy at all. What will be the long-term effects of these impacts of the crisis on our democracies? What will democracy look like post-COVID? What does the crisis teach us about what our democracies have always been?

Join us for a discussion of these and other democracy-related issues in these troubled times by a panel of four hailing from Colombia, India, South Africa, and the USA.

Date: Thursday, 13 August
Time: 14:00-16:00 (South African Standard Time – GMT +2)

 

Please RSVP to Mamello Serasengwe at serasengwemsm@ufs.ac.za no later than 12 August 2020 upon which you will receive a Skype for Business meeting invite and link to access the webinar

Panel

Prof Natalia Angel Cabo (University of Los Andes, Bogota, Colombia)

Dr Quaraysha Ismail-Sooliman (University of Pretoria, Pretoria, South Africa)

Dr Usha Ramanathan  Independent Law Researcher  (Delhi, India)

Prof Katie Young (Boston College, Boston, USA) 

Moderator

Prof Danie Brand (Free State Centre for Human Rights, University of the Free State, Bloemfontein, South Africa)   




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

 

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