Latest News Archive

Please select Category, Year, and then Month to display items

Student Geography conference inspires next generation of geographers

06 November 2023 | Story MBALI MABOEA | Photo SUPPLIED

The Department of Geography on the UFS Qwaqwa Campus recently played host to the Society of South African Geographers Conference (SSAG 2023), which gathered more than 100 students over three days.

Fostering academic growth, collaboration, and inspiration among students and researchers in the field of geography, the Department of Geography on the UFS Qwaqwa Campus recently played host to the Society of South African Geographers Conference (SSAG 2023), which gathered more than 100 students over three days.

Following a five-year hiatus, the three-day conference comprised student proposal presentations in different fields: human geography, environment geography, geoinformatics, and physical geography, divided into breakaway sessions over two days. Furthermore, day three of the annual conference included an excursion to the Basotho Cultural Village and Clarens.

The three-day annual student conference focused on different themes presented by two main speakers. The topic of the first keynote speaker, Dr Mahlomola Daemane, General Manager of the SANParks Arid Research Unit, focused on the contemporary conservation, transition, and relevance of science in policy and decision making.

The second keynote speaker was Dr Felicia Akinyemi, a Marie Sklodowska-Curie Research Fellow affiliated with the Institute of Geography at the University of Bern in Switzerland. Her work focuses on the intersection of geoinformatics, global change, and sustainability. Dr Akinyemi focused her talk on the integrative geospatial methods and metrics for sustainable land use. She introduced different techniques and metrics and gave students insight in early-career African research.

Speaking about the success of the conference, Nthebohiseng Sekhele, Geography Lecturer on the Qwaqwa Campus and chair of the organising committee, said, “The local organising committee was also very impressed with the quality of presentations from our postgraduate students in Geography, as well as the robust discussions that happened during the parallel sessions in the two days of the conference. We had a positive response of physical and online participation from many universities across South Africa. We are pleased that we have achieved our goal with this conference, which is to inspire the next generation of geographers.”

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

Back

Economic and Management Sciences

Education

Health Sciences

The Humanities

Law

Natural and Agricultural Sciences

Theology and Religion

Open Distance Learning

Business School

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept