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13 December 2019 | Story Leonie Bolleurs | Photo Supplied
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David Shikoyeni received a master’s degree in Town and Regional Planning during the UFS December Graduation Ceremonies. He was inspired to study at the UFS after he experienced the competency of UFS graduates he worked with.

Amid hardship and difficulty, David Shikoyeni received his master’s degree in Town and Regional Planning. It was awarded to him at the December Graduation Ceremony of the Faculty of Natural and Agricultural Sciences on the Bloemfontein Campus of the University of the Free State (UFS) on 11 December 2019. 

Shikoyeni, who completed his undergraduate studies at the Namibia University of Science and Technology, had the opportunity to work with several town planners who graduated from the UFS. He was inspired by their competence, which motivated him to apply for his postgraduate studies at the UFS Department of Urban and Regional Planning.

At the time (2013) when he applied for an Honours Degree in Town and Regional Planning, Shikoyeni was working for the Walvis Bay Municipality in Namibia.

Persisting and the will to overcome

He describes the start of his UFS journey: “After a 26-hour bus ride, I arrived at the UFS for the first contact session of my honours studies. It was expensive, since I did not secure any study loans or bursaries and I had to stay in a hotel for the duration of the block classes.”

He continues: “And studying was boring since I did not study for a while. The pressure of school, work, and family life was too much to handle.”

Shikoyeni, however, believed in himself and knew that he had a goal to achieve. Seeing what he was capable of, Shikoyeni persisted and proceeded to a master’s in Town and Regional Planning. 

The impact of mining on small towns

In addition to his recent qualification, Shikoyeni believes that the UFS has equipped him with research skills. For his master’s dissertation he researched the topic: The impact of mining on the land use and planning of a small town: the case of Karibib, Erongo Region, Namibia.

Shikoyeni explains: “Mining has both positive and negative effects on land use as well as on the development of most of the small towns.”

The study was conducted in Karibib due to the town’s rich mineral resources. The area is dominated by mining activities, including gold, lithium, and marble. Development is largely dependent on the mining staff and the mines’ land use demand. As a result of consistency of the gold price and the newly opened lithium mine, the population in the area is still increasing. 

Shikoyeni found that although there are employment opportunities in Karibib, people are faced with challenges regarding property values, employment opportunities, economic growth, unaffordable housing, an increase in informal housing, and pressure on existing services.

Contributors to Shikoyeni’s study indicate that mining regions are undergoing land-use change processes that are different from what might have been expected in the absence of high-quality mineral deposits and, as such, they should be managed differently. Knowing how to do this requires a general understanding of land-use change processes that occur in these regions. 

“To prevent another ghost town, Karibib must be attractive to investors. It needs industries to generate income, transport services, trade, educational facilities, and health services. 

Shikoyeni states that most of these requirements are provided partially or entirely by local providers. “This is the role that diversification plays. Local authorities should not prescribe but encourage investors to take up such activities. They should promote all attempts to ‘go local’.

“If the government, be it at local or regional level, cannot encourage the growth of a tax-paying population, it has failed in its purpose,” Shikoyeni concludes.

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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