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19 March 2021 | Story Cobus van Jaarsveld

As students are returning to campus, Cobus van Jaarsveld, Assistant Director: Threat Detection, Investigations and Liaison at Protection Services, believes it is important that they ‘know’ and practise safety at the UFS:

1) Know the number of your Department of Protection Services:

• Bloemfontein Campus: +27 51 401 2911(also in cases of GBV)
• Qwaqwa Campus: +27 58 718 5032 / 5029 / 5033
• South Campus: +27 51 505 1298

Protection Services staff are the experts on campus safety, and they are able to point out the safest routes on and around campus, especially after dark. They can also assist with any safety concerns you may have.

As a student, you are smart; use your senses:
o Never let a stranger in your room or apartment
o Never walk alone after dark.

2) Know how to use alcohol

Although drinking and driving is a big NO, there are some other cardinal facts about drinking that you need to take note of:

• Never consume a drink provided by a stranger
• Never leave a drink unattended
• Never drink too much too quickly
• Always leave a party with a buddy

3) Know the basics of personal finance

You will be bombarded with offers from credit card companies, clothing stores, etc. Know how to budget. If you do not know how to budget, please contact the Student Counselling and Development office to assist you. This skill will not only make your life easier at varsity, but also once you start earning an income.

Be aware of fraud. If something looks too good to be true, it often is.

Watch your wallet. Theft or robbery is a possibility.

4) Know how to be safe on the internet

You are spending a lot of time on the internet. Unfortunately, criminals are also spending time in cyberspace with the aim of taking advantage of unsuspecting people like you. This may include cyberstalking, which may lead to emotional or physical harm, or it may result in them taking your information or money through phishing scams. Do not become a victim and ensure that you
- never use the same password twice;
- never use unsecured Wi-Fi to access private accounts;
- always use passwords that are difficult to guess;
- never reveal important information such as your banking login details to strangers calling on the phone; and
- never mention your location online.

5) Know basic self-defence

Avoid being the victim of any form of harassment or assault. Learning basic self-defence techniques will help you to protect yourself from physical attacks.

Protection Services offer self-defence classes from time to time. Make use of the opportunity and equip yourself with these self-defence techniques. Also buy yourself pepper spray, which can give you time to escape.

“Lastly, be aware of your surroundings. Walk with a purpose, without headphones, and always pay attention,” says Van Jaarsveld.



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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