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06 May 2025 | Story Leonie Bolleurs | Photo Supplied
Tembisa Leeuw
Dr Tembisa Leeuw – awarded her PhD at the UFS – focused her research on protecting the rights of children in conflict with the law and bridging the gap between policy and practice in child and youth care centres.

When Dr Tembisa Leeuw was in Grade 9, four of her classmates were convicted of serious offences, including assault with intent to cause harm and murder. This incident sparked a deep curiosity about the juvenile justice system and how it treats young offenders. She found herself asking difficult questions: Were her peers detained separately from adults? Were they placed in facilities designed specifically for children?

Despite the crimes her classmates committed, Dr Leeuw believed they still needed care and protection. The experience led her to reflect on society’s responsibilities towards young offenders, the difficulties they face in the justice system, and whether the laws meant to protect them are being properly applied. “This formative experience instilled in me a commitment to advocate for the rights of vulnerable children and to ensure that the juvenile justice system upholds principles of care, protection, and rehabilitation,” she says.

Now a human rights officer at the South African Human Rights Commission based in Mpumalanga, Dr Leeuw was recently awarded a Doctor of Philosophy degree at the University of the Free State’s (UFS) autumn graduation ceremony. Her dissertation is titled Protecting the rights of children in conflict with the law in South Africa: The law versus the practice.

Her supervisor, Prof John Mubangizi – Research Professor in the Free State Centre for Human Rights – said it was an absolute privilege to supervise such a brilliant, dedicated, and hard-working student. “Her intellectual curiosity, resolute determination, and unwavering commitment to excellence have been quite inspiring. I have no doubt that she will continue to make a profound impact wherever she goes and whatever she does henceforth.”


Safeguarding the rights and well-being of children

It is well known that a large share of crimes, particularly violent ones, are committed by young people. In South Africa, children are frequently charged with serious offences, such as robbery, rape, assault, and murder. These realities highlight the need for stronger systems that protect the rights and well-being of young people in conflict with the law.

In her research, Dr Leeuw looked at why children in child and youth care centres often face human rights violations, despite the Constitution guaranteeing every child the right to be safe from harm, neglect, and abuse. 

Her findings revealed troubling gaps between what the law says and what happens in practice. According to Dr Leeuw, the Constitution states that children should only be detained as a last resort and for the shortest time possible. UNICEF also emphasises that children must be kept separate from adults in detention and treated in ways that reflect their age and developmental needs, including their right to education. “However, no country has yet built a fully separate juvenile justice system that ensures that children are treated differently from adults,” she says.

Dr Leeuw also found that children in these facilities are often denied access to education. As a result, when they return to their communities, they are often without the skills or qualifications needed to find work. “It is important that these children receive training that enables them to support themselves,” she explains.


Contributing to a humane and equitable society

Dr Leeuw believes that protecting the rights of children in conflict with the law is important to creating a more just and humane society. “Research shows worrying conditions in child and youth care centres (CYCCs) – overcrowding, poor health care, limited education. Many children report violence, intimidation, and neglect, all of which go against the idea of rehabilitation,” she says.

These environments can deepen trauma and increase the chances of reoffending. “The conditions inside detention centres have a serious impact on children's ability to rehabilitate and move forward in life.”

South Africa has made progress in drafting laws to protect children’s rights, but putting those laws into action is still a challenge. “With the right changes and a more caring approach, the justice system can better meet the needs of children,” Dr Leeuw says. She points to several areas where improvements could be made to help policy makers and human rights workers reform juvenile justice.

She notes that although international agreements promote rehabilitation and support, many CYCCs still focus on punishment. “Children often feel abandoned in these spaces. We need to move away from punitive systems and create pathways for healing and reintegration.”

Government departments, such as social development, education, and health, must work together to provide support that meets children's full range of needs. “Current laws must be updated to meet international standards, and programmes are needed to help guide children away from the justice system in the first place,” she adds.

Dr Leeuw also highlights the key role played by child and youth care workers (CYCWs). Their training and regular oversight are important in making sure children’s rights are respected. “Regular monitoring and open reporting are needed to hold facilities accountable,” she says.

She further stresses the need for greater access to mental health support, education, and skills development. This would help children return to school and integrate into society more easily. She also recommends maintaining strong family ties during rehabilitation, including virtual visits for families who live far away. Addressing overcrowding and offering different forms of intervention can also improve care and reduce reoffending.

“Teaching children about their rights and helping them develop a sense of responsibility is just as important. Programmes that promote personal growth and rehabilitation should be part of their daily lives,” she says.


Aligning with international human rights standards

Dr Leeuw’s study closely aligns with international human rights guidelines on juvenile justice. These include the United Nations Convention on the Rights of the Child (UNCRC) and other global frameworks that call for dignity, fairness, and restorative justice in how children are treated. Her work highlights the need to address the root causes of children's behaviour and calls for tailored responses, such as alternatives to incarceration, fair sentencing, and stronger legal protection.

The study also highlights the importance of prevention. Involving communities, improving access to education, and introducing early support systems can help reduce the number of children who come into contact with the justice system. She believes that juvenile justice systems must ultimately uphold the dignity and fair treatment of children, as outlined in both international frameworks and the South African Constitution.

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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