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12 December 2019 | Story Rulanzen Martin | Photo Johan Roux
Dionne
Dr Dionne van Reenen received her PhD during the December Graduation Ceremonies at the UFS

Very seldom in modern history do we try to critically think about how our bodies and even more those of women are presented in modern popular culture. Through her PhD research project, Dionne van Reenen attempts to critically analyse ideological formations of the body in performance and its discursive distribution in the consumption of contemporary popular media, adding to existing literature and research on the topic.

Her dissertation is titled Performing the Erotic: (Re)presenting the Body in Popular Culture.

Van Reenen, a senior researcher at the Unit for Institutional Change and Social Justice at the University of the Free State (UFS), received her PhD qualification specialising in English on Wednesday 11 December 2019 during the final ceremony of the December Graduation.

Van Reenen has extensive experience in all areas of education. Her work at the Unit for Institutional Change and Social Justice is interdisciplinary, involving both everyday and institutional politics. She also holds a Master’s degree in Philosophy, which she obtained in 2013 from the UFS. In 2016, she chaired the UFS Language Policy Review Committee and established the Gender and Sexual Equity Office, which formulated the Sexual Harassment, Misconduct, and Violence Policy at the UFS. 

Changing of social constructs in media consumption

“My study focuses on performative framings of social constructs of gender, race, and class (along with size, age, and ability) in the ordering processes of society,” she says.  These performative framings in are in turn sustained by the (re)presentation of eroticised bodies in popular visual media in the 21st century. “These framings and orderings are critiqued as nothing new, but simply entertainment product that is trading in ideologies and stereotypes that have long been in sociocultural circulation, and they affect how people think, speak and act.” 

The study also shows that the dynamics of ‘virtuality’ and ‘visuality’ in the digital age are altering traditional demarcations of space, place, time, and community, and have paved the way for formations of global cultures that are, at the same time, informative, expedient, empowering, homogenising, prescriptive, and imperialising.

Whilst the #MeToo movement focused more on gender-based violence, gender inequality, and sexual violence, which are big social issues and do not exist in isolation, Van Reenen used her critical philosophical training to understand how, in the current era, the dominant discourse on representations of the body, particularly marginalised bodies, has been constructed at the popular level. 

With every PhD research dissertation the candidate’s main aim is to add new knowledge to a discipline. For Van Reenen, it is important that her research can contribute to a change in social and cultural constructs by re-imagining the (re)presentations of the body in popular media.

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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