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UFS student attends COP27 Simulation Model in Egypt

26 September 2022 | Story Anthony Mthembu | Photo Supplied

Letsatsi Lekhooa, a UFS student who was selected to be part of the COP27 Simulation Model.

Nearly 150 students from across the world will gather in Egypt for the COP27 Simulation Model from 9 September to mid- October 2022. Among them will be Letsatsi Lekhooa, a Master of Science student specialising in Climate Change from the University of the Free State (UFS).

Lekhooa was one of 150 students from a pool of more than 1 800 applicants across the world who were selected to be part of this prestigious initiative. “This opportunity is appealing, because as young people we need to work hard to not only ensure that we break through walls, but to also represent our university well everywhere we go,” Lekhooa indicated.

The COP27 Simulation Model

The COP27 Simulation Model, which is organised by the British University in Egypt along with the United Nations Development Programme (UNDP), is a worldwide climate conference led by and targeted at the youth. The conference is important for several reasons, such as encouraging conversations around climate action among the youth. As it stands, the initiative is split into two categories, which include the hybrid capacity-building programme that started in September, and the COP27 Mock Conference set to begin in October. Lekhooa is currently engaged in the online capacity-building programme, which he describes as a learning curve. “Every day I learn something new, and I enjoy it because the process is assisting me in learning more about this climate change issue,” Lekhooa expressed.

The benefits of attending the COP27 Mock Conference

Although the first leg of the COP27 Simulation Model is online, Lekhooa will get the opportunity to travel to Egypt and physically be part of the COP27 Mock Conference on the campus of the British University in Egypt. As such, he hopes to take away as much as possible from the experience. “I hope to learn about the ways in which I can better communicate this climate change issue, not only in my home country of Lesotho, but generally in Southern Africa,” said Lekhooa. Furthermore, through his interactions with international scholars, he hopes to create and encourage a collaborative spirit to battle climate change.

The experience does not only serve as a learning curve for Lekhooa, but it is also one of the key steps that will allow him to reach a life goal. “I would like to be an international consultant in bodies such as the Intergovernmental Panel on Climate Change (IPCC), and the United Nations Framework Convention on Climate Change (UNFCCC), as they play a key role in making decisions on climate change,” Lekhooa highlighted.

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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