Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
26 October 2018 Photo Gallo Images
Kovsie Netball star selected to the national team
Kovsie Netball Team player Khanyisa Chawana has been selected to the National Spar Proteas Netball team.

Kovsie Netball Team centre and wing attack player Khanyisa Chawane’s glorious netball career has taken to greater heights after her recent selection into the national netball team.

The 22 year-old student final year Bachelor of Science (Geography and Agrometeorology) student hailed her selection as a new challenge in her sporting career.

Chawana has this week been in  Australia for the Fast 5 netball series where they will be playing against Jamaica, Malawi, Australia, New Zealand and England on this coming Sunday and Monday.
A Fast 5 is a quick-paced netball game where contesting nations will select five players per side.

Testing her prowess with the best

Chawana has so far been capped three times in the Spar Proteas national netball team; those were for the Quad Series matches which the South African Spar Proteas played against Australia, New Zealand and England. The games were held in Australia last month.

“I was nervous at first, but I wanted to go out there and wanted to prove myself that I worked hard to be here,” she said adding that their opponents were playing a different game with speed and high intensity.

“After those games, I felt like I needed to prepare myself more so that I could handle the intensity as I was playing with ladies who have been capped many times and were more experienced,” she said.

Kovsie netball coach “inspired me to be the best”

Asked who has been a source of her inspiration in her netball career, Chawana spared no moment in attributing her rise to Kovsie Netball Team coach Burta De Kock.

She explained that from her late high school days when she was playing at provincial games in Limpopo, De Kock scouted her abilities and has been keeping an eye on her since then.

“When I was doing Grade 12, she approached me and said, ‘One day you will play in the National Netball Team.”

“When I first got the news of my selection, I exclaimed and said; Wow! Words do really come true, my coach Burta saw in me what I could not see and she prepared me for the best.”

She described her coach as a kind of a manager who individually nurtures the abilities of each and every single player for the best, “I am so grateful to her.”

Chawana blew off family blows

Last year, Chawana was dealt a devastating blow when her family home in Bushbuckridge, Mpumalanga was razed to the ground by fire, thereby losing all her possessions. Her father, Russel, also had to spend three weeks in the intensive care unit of a local hospital for smoke inhalation treatment.

“Having gone through all this, but for me, nothing picks me up more than a prayer. I felt that all this might have happened for a reason and it always aspired that something better will come up,” she said.

During the Varsity Cup National Netball Tournament finals played which the Kovsie Netball Team played against the University of Pretoria here, Chawana came out as the best player in the Premier League, National Championship and the Varsity Netball in the same year.

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
 

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