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Urban and regional planner receives prestigious Stals prize

22 May 2020 | Story Leonie Bolleurs | Photo Supplied

Prof Das Steyn — Prof Das Steÿn was announced as the recipient of the prestigious Stals Prize this week (19 May 2020), awarded by the Suid-Afrikaanse Akademie vir Wetenskap en Kuns.

Prof Das Steÿn, former Head and currently a research fellow in the Department of Urban and Regional Planning at the University of the Free State (UFS), has been named the recipient of the prestigious Stals Prize this week (19 May 2020), awarded by the Suid-Afrikaanse Akademie vir Wetenskap en Kuns (South African Academy for Science and Arts).

The current Head of the Department, Prof Maléne Campbell, together with two academics from the North-West University, Profs Juanée Cilliers (Head of the Urban and Regional Planning group) and Ewert Kleynhans (School of Economic Sciences), nominated Prof Steyn for the award.

A lifetime’s work

The Stals Prize for Urban and Regional Planning was awarded to Prof Steÿn, based on his numerous publications in Afrikaans, the important role he played in the planning profession in South Africa, his major contribution to the planning of literature, as well as the academic development of urban and regional planning. The award recognises Prof Steÿn for a lifetime's work in the field of urban and regional planning – including his appointment as a lecturer (1980-2009) and also for his time as editor of the journal Stads-en Streekbeplanning / Town and Regional Planning / Meralo ya Ditoropo le Mabatowa (2000-2019).

“As editor of the journal for Urban and Regional Planning, Prof Steÿn set a very high standard. So much so that this UFS journal was listed earlier this year on the international SciELO (Scientific Electronic Library Online), a Norwegian database. As an academic, his research and theoretical knowledge of normative planning are also highly regarded,” says Prof Campbell.

Motivating Prof Steÿn’s nomination for the Stals Prize, Prof Campbell states that as editor, he has sought to highlight issues in the South African planning industry through well-founded headlines. “The journal also grew from a small local journal to a journal that is being read every month in more than 60 countries on the free access platform,” she adds.

In addition to this journal, Prof Steÿn has also published in other journals and written books that have appeared bilingually in South Africa. Then there is also a work that has appeared in Dutch in the Netherlands with his contribution in Afrikaans.

He applied a combination of the urbanistic concept with Christian philosophy in his work and published some articles on the topic.

Distinction between thought and action

Prof Steÿn says that in urbanistics, a distinction is made between the framework of thought and action. It is a matter of answering the ‘what?’, ‘how?’, and ‘why?’ questions.

He believes urbanistics is particularly useful in public participation to bring the various role players in planning together. It makes it possible to distinguish between the considerable number of factors that complicate matters. South Africa, with its unique situation regarding planning, may be able to make good use of this concept.

As example, he uses the matter of providing basic services such as electricity to a community. “At the first level of infrastructure, the problem of providing electricity is easy to solve: x people use y units, implying that z units must be provided. This solves the ‘what?’ part of the problem. The ‘how?’ question in the superstructure is also relatively easy to answer. Different engineers may have different solutions about the appropriate design of the distribution network and how it should link to the greater whole. Still, in the end, the most effective design will be sufficient.”

“The major crisis is in the ‘why?’ question. At the ideological level, basic services mean different things to different people. Basic services to the Marxist are a right that every person must receive free of charge, while the capitalist considers it a commodity that every human being should pay for to receive.”

“This simple example shows that there is a definite difference in viewpoints about the mere provision of electricity and that these attitudes of people will, as a matter of course, influence the planning process itself,” he explains.

Recognising outstanding work

The Suid-Afrikaanse Akademie vir Wetenskap en Kuns awards the Stals Prize for, among others, high-quality publications or a series of high-quality publications (preferably in Afrikaans) whereby extraordinary contributions are made to the practice of science.

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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