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13 May 2022 | Story Alicia Pienaar
Prof Vetrik
Prof Tomas Vetrik.

The Dean of the Faculty of Natural and Agricultural Sciences, Prof Danie Vermeulen, has the pleasure of inviting you to the inaugural lecture of Prof Tomas Vetrik. 

Topic: Extremal graph theory 

Event Details:
Date: 19 May 2022
Time: 17:30
Venue: Equitas Auditorium, UFS Bloemfontein Campus

RSVP:  Ms Marinda Venter on +27 51 401 2691 or email: VenterSM@ufs.ac.za  on or before Tuesday 17 May 2022.

Light refreshments will be served after the inaugural lecture. 


More about the speaker:

Tomas Vetrik received two scholarships from foreign countries during his PhD study. He spent one semester of his PhD study at the Vienna University of Technology in Austria, and two semesters at the Technion – Israel Institute of Technology. He was the only postgraduate student from Slovakia to receive a scholarship from the Israeli government in 2006. Tomas Vetrik joined the University of the Free State in 2014, after his postdoctoral research at the University of KwaZulu-Natal and working at the UniversityPretoria. His research area is graph theory. He is mainly focusing on the degree-diameter problem, graph indices, and metric dimension of graphs. He is an NRF-rated researcher and has produced about 75 research papers (approximately 25 of them as a single author).

Three PhD students and three MSc students have completed their studies under his supervision. He has presented seminar talks at 24 universities from 15 different countries. Please take note of our COVID-19 health and safety protocols (https://www.ufs.ac.za/return-to-campus ) when visiting the UFS campuses.


Please take note of our COVID-19 health and safety protocols (https://www.ufs.ac.za/return-to-campus ) when visiting the UFS campuses. 

News Archive

When entrepreneurship meets industrial innovation
2014-12-13

Johan Eksteen (Photo: Supplied)

Internationally acclaimed Argicon Pelleting is a worldwide supplier of pelleting machinery and equipment as well as agri-processing factories. The company was established in 1993 by André and Johan Eksteen, UFS 2004 MBA graduate. After taking over sole ownership, the company grew from a one-man business to an internationally respected specialist in the design and manufacturing of pelleting solutions for the agricultural industry.

A common practice in industrial procedures, pelleting involves processing material into small dry pellets. This is used globally by manufacturers of animal feed or recycling facilities that specialise in processing materials for reuse. This process, however, can only be successfully accomplished with specialised equipment, namely a pelletizer. With fifteen years’ experience in agriculture, and international exposure in countries such as Uganda, Australia, Singapore and New Caledonia, this was not a tall order for Johan.

Agricon focuses on consistently developing innovative ways to add value to its offering. The business has successfully installed pelleting equipment for a range of products, including tobacco dust, rooibos tea, human sludge waste, organic fertilizers and vermi-compost. In addition to the manufacturing of machines and equipment, the company also provides training and on-site installation for clients, as well as support following a sale or the provision of spare parts. The company also provides advice on new product developments and business opportunities for clients within the sector.

Apart from doubling its sales between 2013 and 2014, the company gained great recognition within the industry. Johan was awarded the University of the Free State Business School’s Entrepreneur award in 2013 and he is the first-prize winner of the ILO Free State EnterPRIZE Job Creation Challenge for 2014. He is currently one of 15 finalists countrywide in the Entrepreneur of the Year competition sponsored by Business Partners and Sanlam. Johan is the mentor and stand-in manager for Almenta, a skills development company (winner of the ILO Best Social Entrepreneur for Skills Development award) and Equus Groom School (winner of the ILO Social Entrepreneur in Youth Development award).

Johan was also announced as the winner of the SA entrepreneur of the year for small businesses.

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