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30 June 2021 | Story Dr Nitha Ramnath
Dr Charlene Marais, Prof Vladimir Azov and Prof Ulrich Hennecke
The Department of Chemistry at the University of the Free State (UFS) held a successful online International Symposium on Organic Chemistry on 15 June 2021. The symposium brought together scientists from several South African and foreign universities and created a virtual platform for a long-awaited discussion stalled by the COVID-19 pandemic. About 20 participants from universities in South Africa, Belgium, and Germany presented their lectures during the symposium. In addition, this symposium was directed at the postgraduate students in the Department of Chemistry at the UFS, allowing them to present their results to an international audience and to foster their engagement in scientific research.

For more than a year, the COVID-19 pandemic has prevented the common personal communication avenues for the researchers: face-to-face (F2F) conferences, symposia, and workshops. To bridge this gap, Prof Vladimir Azov and Dr Charlene Marais from the Department of Chemistry organised the online meeting for the researchers from the UFS and several other local and foreign universities, all working in the field of organic chemistry.

Online material from the International Symposium on Organic Chemistry is available at here

Collaborative project between the UFS and VUB towards the development of gel-based drug release systems

The symposium also served as a long-awaited inception meeting for the collaborative project between the Organic Chemistry group at the UFS and the Organic Chemistry (ORGC) group at the Vrije Universiteit Brussel (VUB). This project is jointly funded by the National Research Foundation (NRF) and FWO (Research Foundation – Flanders); it is aimed at the development of new peptide-based materials with properties controllable by precisely tuned interactions of unnatural amino acids included in the peptide sequence. Such peptides can, for example, be used as smart materials for precisely controllable drug release. The South African team members, directed by Prof Vladimir Azov, will specialise in the development of the new amino acid building blocks, whereas the VUB team, headed by Prof Ulrich Hennecke, will focus on peptide preparation and studies on their properties.

This kick-off meeting was initially planned as a F2F event in June 2020 but was delayed due to the COVID-19 travelling restrictions and finally migrated to a virtual space. This provided an opportunity to present the project proposals and to discuss the initial results in a much broader circle than would have been possible within the common F2F meeting framework.

News Archive

UFS study shows playing time in Super Rugby matches decreasing
2016-12-19

Description: Super Rugby playing time Tags: Super Rugby playing time 

The study by Riaan Schoeman, (left), Prof Robert Schall,
and Prof Derik Coetzee from the University of the Free State
on variables in Super Rugby can provide coaches with
insight on how to approach the game.
Photo: Anja Aucamp

It is better for Super Rugby teams not to have the ball, which also leads to reduced overall playing time in matches.

This observation is from a study by the University of the Free State on the difference between winning and losing teams. Statistics between 2011 and 2015 show that Super Rugby winning teams kick more and their defence is better.

These statistics were applied by Riaan Schoeman, lecturer in Exercise and Sport Sciences, Prof Derik Coetzee, Head of Department: Exercise and Sport Sciences, and Prof Robert Schall, Department of Mathematics and Actuarial Sciences. The purpose of the study, Changes in match variables for winning and losing teams in Super Rugby from 2011 to 2015, was to observe changes. Data on 30 games (four from each team) per season, supplied by the Cheetahs via Verusco TryMaker Pro, were used.

About two minutes less action
“We found that the playing time has decreased. This is the time the ball is in play during 80 minutes,” says Schoeman. In 2011, the average playing time was 34.12 minutes and in 2015 it was 31.95.

“The winning team has less possession of the ball and doesn’t want it. They play more conservatively. They dominate with kicks and then they play,” says Prof Coetzee, who was the conditioning coach for the Springboks in 2007 when they won the World Cup.

Lineouts also more about kicking
As a result, the number of line-outs also increased (from 0.31 per minute in 2011 to 0.34 in 2015) and the winning teams are better in this regard.

“The winning team has less possession of the ball
and doesn’t want it. They play a more conservative
game. They dominate with kicks and then they play.”

Schoeman believes that rule changes could also have contributed to reduced playing time, since something like scrum work nowadays causes more problems. “When a scrum falls, the time thereafter is not playing time.”

According to Prof Coetzee, rucks and mauls have also increased, (rucks from 2.08 per minute in 2011 to 2.16 in 2015 and mauls from 0.07 per minute in 2011 to 0.10 in 2015). “The teams that win, dominate these areas,” he says.

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