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Prof Peter Rosseel delivers guest lecture during UFS visit

13 August 2024 | Story Anthony Mthembu | Photo Sibahle Dayimani and Amandla Kulu

The Business School at the University of the Free State (UFS) hosted Prof Peter Rosseel, Managing Director of Management Consulting and Research – a spin-off of the Catholic University of Leuven in Belgium – for a guest lecture during his visit to the UFS Faculty of Economic and Management Sciences (EMS).

The guest lecture took place on 19 July 2024 in the Business School Auditorium and was attended by academics from the UFS.

Reflecting on the lecture

The lecture presented by Prof Rosseel focused on how combining strategy, strategy implementation, culture transformation, leadership, and learning successfully leads to sustainable growth, creates engagement, and delivers tangible results. Throughout the lecture, Prof Rosseel spoke about how experts tend to make bad leaders and therefore stop change from happening within an organisation. In fact, he highlighted that, “Experts stop change from happening within the workplace because experts, by definition, look through the eyes of their expertise, but you cannot reduce the world to different forms of expertise, as it is holistic.” As such, he argued that to change an organisation, one must see things from the point of view of others.

Furthermore, Prof Rosseel delved deeper into the hierarchical operating model within organisations. He indicated that the above model should be one community within organisations; however, unfortunately it is not. This is because organisations are made up of several departments such as finance and human resources. As such, he regards these departments to be silos that could prove to be detrimental to organisations, as each silo can create its own culture as opposed to an organisational culture. These are some of the points he discussed throughout the lecture.

After the lecture concluded, the audience had the opportunity to engage with Prof Rosseel on his viewpoints. In fact, Lyle Markham, Academic Head of Department and Lecturer in Industrial Psychology at the UFS, was one of the audience members and described the lecture as insightful.

News Archive

Nanotechnology breakthrough at UFS

2010-08-19

Ph.D students, Chantel Swart and Ntsoaki Leeuw

Scientists at the University of the Free State (UFS) made an important breakthrough in the use of nanotechnology in medical and biological research. The UFS team’s research has been accepted for publication by the internationally accredited Canadian Journal of Microbiology.

The UFS study dissected yeast cells exposed to over-used cooking oil by peeling microscopically thin layers off the yeast cells through the use of nanotechnology.

The yeast cells were enlarged thousands of times to study what was going on inside the cells, whilst at the same time establishing the chemical elements the cells are composed of. This was done by making microscopically small surgical incisions into the cell walls.

This groundbreaking research opens up a host of new uses for nanotechnology, as it was the first study ever in which biological cells were surgically manipulated and at the same time elemental analysis performed through nanotechnology. According to Prof. Lodewyk Kock, head of the Division Lipid Biotechnology at the UFS, the study has far reaching implications for biological and medical research.

The research was the result of collaboration between the Department of Microbial, Biochemical and Food Biotechnology, the Department of Physics (under the leadership of Prof. Hendrik Swart) and the Centre for Microscopy (under the leadership of Prof.Pieter van Wyk).

Two Ph.D. students, Chantel Swart and Ntsoaki Leeuw, overseen by professors Kock and Van Wyk, managed to successfully prepare yeast that was exposed to over-used cooking oil (used for deep frying of food) for this first ever method of nanotechnological research.

According to Prof. Kock, a single yeast cell is approximately 5 micrometres long. “A micrometre is one millionth of a metre – in laymen’s terms, even less than the diameter of a single hair – and completely invisible to the human eye.”

Through the use of nanotechnology, the chemical composition of the surface of the yeast cells could be established by making a surgical incision into the surface. The cells could be peeled off in layers of approximately three (3) nanometres at a time to establish the effect of the oil on the yeast cell’s composition. A nanometre is one thousandth of a micrometre.

Each cell was enlarged by between 40 000 and 50 000 times. This was done by using the Department of Physics’ PHI700 Scanning Auger Nanoprobe linked to a Scanning Electron Microscope and Argon-etching. Under the guidance of Prof. Swart, Mss. Swart en Leeuw could dissect the surfaces of yeast cells exposed to over-used cooking oil.

The study noted wart like outgrowths - some only a few nanometres in diameter – on the cell surfaces. Research concluded that these outgrowths were caused by the oil. The exposure to the oil also drastically hampered the growth of the yeast cells. (See figure 1)

Researchers worldwide have warned about the over-usage of cooking oil for deep frying of food, as it can be linked to the cause of diseases like cancer. The over-usage of cooking oil in the preparation of food is therefore strictly regulated by laws worldwide.

The UFS-research doesn’t only show that over-used cooking oil is harmful to micro-organisms like yeast, but also suggests how nanotechnology can be used in biological and medical research on, amongst others, cancer cells.

Figure 1. Yeast cells exposed to over-used cooking oil. Wart like protuberances/ outgrowths (WP) is clearly visible on the surfaces of the elongated yeast cells. With the use of nanotechnology, it is possible to peel off the warts – some with a diameter of only a few nanometres – in layers only a few nanometres thick. At the same time, the 3D-structure of the warts as well as its chemical composition can be established.

Media Release
Issued by: Mangaliso Radebe
Assistant Director: Media Liaison
Tel: 051 401 2828
Cell: 078 460 3320
E-mail: radebemt@ufs.ac.za
18 August 2010

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