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31 October 2021 | Story Prof Francis Petersen

The University of the Free State (UFS) calls on all higher education institutions, business, the private and public sector, and the South African community to confirm their commitment towards climate change and to contribute to climate change interventions.

“The UFS is committed to contributing meaningfully through research, innovation, policy advice, activism, and the operational management of the university to a fairer, cleaner, and healthier world, and urges world leaders to make bold decisions on how to reduce greenhouse gas emissions at the upcoming Climate Change Conference of the Parties (COP26) meeting in Glasgow,” says Prof Francis Petersen, Rector and Vice-Chancellor.

The UFS supports the United Nations’ (UN) Sustainable Development Goals (SDGs), and in particular Goal 13, which calls for urgent action to combat climate change and its impact and is committed to underpinning it in the institution’s strategy and operations.

According to Prof Petersen, the university is developing a response to positively impact society and is using the SDGs as basis for this response. “This will incorporate our operations in terms of green and sustainable campuses, as well as the Academic Project in terms of quality research, engaged scholarship, and strategic partnerships with government, communities, and different sectors of the economy. A response to the SDGs is a significant step towards our commitment to play a role in climate change,” says Prof Petersen.

News Archive

Heart-valve studies receive international recognition
2017-07-11

 Description: Heart-valve studies  Tags: Heart-valve studies  

Prof Francis Smit, Head of the Department of
Cardiothoracic Surgery at the UFS, and Manager of the
Robert WM Frater Cardiovascular Research Centre, with
Kyle Davis, Mechanical Engineer at the centre.

Photo: Rulanzen Martin

Three heart-valve studies which have been developed at the Robert WM Frater Cardiovascular Research Centre at the School of Medicine at the University of the Free State (UFS) were recently presented in Monte Carlo at the conference of the prestigious global Heart Valve Society (HVS).

These studies are all headed by Prof Francis Smit, Head of the Department of Cardiothoracic Surgery at the UFS, and Manager of the Robert WM Frater Cardiovascular Research Centre.
Prof Smit says the HVS is a combination of the former heart-valve societies of Europe and the US. “Studies on heart-valve disease, heart-valve-related products and operations, as well as the design and development of new valves were presented. There are both clinical and development divisions.

He says the study in which the hemodynamics of their redesigned mechanical poppet valve was compared to a commercial bi-leaflet mechanical heart valve, was named as the best poster presentation in the experimental valve development and numerical flow dynamics division. The study, which was presented by Kyle Davis, mechanical engineer at the centre, competed against some of the best heart-valve research units in the world.

The redesigned valve, based on the 1960s Cape Town poppet valve, has the potential to provide a low-cost solution for mechanical heart-valve replacement. It is possible to produce the titanium ring with 3-D printers and is, together with the silicon poppet valve, extremely inexpensive compared to current mechanical valve-manufacturing processes.
The advantages of this valve over current mechanical valves is that, due to the effective and laminar flow characteristics, as well as the simple locking mechanisms, there is a reduced chance of valve thrombosis, and the need for anti-clotting drugs is therefore limited.

It was also confirmed that the new valve more than meets the published FDA (Federal Drug Agency) requirements, which determine the minimum standards of valves for human use in the US.

The redesigned valve also has a very low platelet activation impact, which is responsible for platelet thrombosis and leads to valve thrombosis or strokes. This valve is another heart-valve project by the centre, which is also in the process of evaluating a tri-leaflet polyurethane valve developed by them.


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