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30 November 2021 | Story Leonie Bolleurs | Photo Supplied
Prof Johan Meyer, Senior Professor in the Department of Mathematics and Applied Mathematics, says he is looking forward to learning from others in the field during this collaboration.

What do trees, black holes, earthquakes, and time structures have in common? 

The answer to this question is that these, in one way or the other, form the focus of some of the abstracts delivered during the Annual Congress of the South African Mathematical Society. The society has as its main objective the advancement of mathematics in South Africa. 

The Department of Mathematics and Applied Mathematics at the University of the Free State (UFS), in conjunction with the South African Mathematical Society (SAMS 2021), is hosting the 64th Annual Congress of the society this week (29 November to 1 December 2021).

Prof Johan Meyer, Senior Professor in the department, says the congress, which is being conducted online, is focusing on all aspects of mathematics research, including history and teaching.

Learning from others in the field

The congress, which aims to share the latest research results in mathematics, will be attended by staff and students from universities across South Africa as well as abroad. “Anyone from the public is, of course, welcome to attend or even share their results if they are also involved in mathematics research,” adds Prof Meyer. 

He says that he is looking forward to learning from others in the field during this collaboration. 

The congress will include discussions on more than 120 abstracts, covering category theory, algebra, topology, logic; functional analysis and operator theory; finite groups and combinatorial structures; graph theory and combinatorics; lie symmetries and nonlinear differential equations; and applied and numerical mathematics.

Array of interesting topics presented

“It is important in many areas of science and engineering to predict and to simulate rare, random events, the occurrence of which may have negative or even catastrophic consequences. Examples include internet server overflows, mechanical breakdowns, floods, and financial crashes. Rare events can also have a positive effect, triggering for example chemical reactions or driving genetic evolution via random mutations.” Prof Hugo Touchette from Stellenbosch University will be shedding some light on this interesting topic in his presentation on Predicting and simulating rare events.

Prof Jeandrew Brink, Associate Professor in the Department of Mathematics and Applied Mathematics at the UFS, is presenting a plenary session on the topic Determining the geometry of strong field space-times in spite of tacitly assuming the answer during every measurement. In South Africa, state-of-the art pulsar timing data from the MeerKAT telescope will make a considerable contribution to conducting GR orbital tests. Prof Brink comments on how pulsar timing tests differ from tests using gravitational wave detectors, as well as what we can learn from the framework already employed to perform pulsar timing measurements.

News Archive

Researchers focus on parrots, poultry and phage therapy
2014-10-10

Photo: en.wikipedia

Veterinary biotechnology focuses on microbial and molecular biological approaches to veterinary illnesses. The group working on veterinary biotechnology research at the University of the Free State (UFS) consists of two academic staff members, Prof Rob Bragg and Dr Charlotte Boucher, two post-doctoral fellows, Drs Chris Theron and Arina Hitzeroth, five PhD and three honours students.

The group has three research focus areas.

Dr Boucher says, “Our main focus area is infectious coryza in poultry, caused by the bacterium Avibacterium paragalliarum. The aim is the control of the disease, mainly through improvement of vaccines, understanding the immune response and improved biosecurity. A key objective is improving methods for serotyping; studying of selected surface antigens and investigating the influence recently discovered bacteriophages might have on virulence. We have co-operative projects with research groups in China, India and Israel.

“The second focus area is an expression system co-developed with the National Institute for Agronomic Research (INRA), France. The flagship project is the expression of the coat protein gene of the beak and feather disease virus, a disease affecting parrots, currently threatening the endangered Cape parrot. This system has led to the development of serological tests, currently under patenting. The application of this system has been extended to human-related diseases, with two interdisciplinary projects underway, co-working with Profs Muriel Meiring and Felicity Burt. Prof Meiring is working on diseases causing bleeding disorders, such as blood-clotting impairment, while Prof Burt is working on viral infections causing haemorrhagic (bleeding) disorders.

“We are also researching disease control in a post-antibiotic era, investigating the potential of phage-therapy by targeting and destroying pathogenic islands within a host, with reduced side-effects on the host itself.

“We have smaller projects, including an interdisciplinary project with Zoology, looking at the protein profile of amphibian (frog) secretions with the focus on antimicrobial activity, as these secretions assist with protecting amphibian skin against infections.”  


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