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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

Research contributes to improving quality of life for cancer patients
2016-11-21

Description: Inorganic Chemistry supervisors  Tags: Inorganic Chemistry supervisors

Inorganic Chemistry supervisors in the Radiopharmacy
Laboratory during the preparation of a typical complex
mixture to see how fast it reacts. Here are, from the left,
front: Dr Marietjie Schutte-Smith, Dr Alice Brink
(both scholars from the UFS Prestige
Scholar Programme), and Dr Truidie Venter (all three
are Thuthuka-funded researchers).
Back: Prof André Roodt and Dr Johan Venter.
Photo: Supplied

Imagine that you have been diagnosed with bone cancer and only have six months to live. You are in a wheelchair because the pain in your legs is so immense that you can’t walk anymore – similar to a mechanism eating your bones from the inside.

You are lucky though, since you could be injected with a drug to control the pain so effective that you will be able to get out of the wheelchair within a day-and-a-half and be able to walk again. Real-life incidents like these provide intense job satisfaction to Prof André Roodt, Head of Inorganic Chemistry at the University of the Free State (UFS). The research, which is conducted by the Inorganic Group at the UFS, contributes greatly to the availability of pain therapy that does not involve drugs, but improves the quality of life for cancer patients.

The research conducted by the Inorganic Group under the leadership of Prof Roodt, plays a major role in the clever design of model medicines to better detect and treat cancer.

The Department of Chemistry is one of approximately 10 institutions worldwide that conducts research on chemical mechanisms to identify and control cancer. “The fact that we are able to cooperate with the Departments of Nuclear Medicine and Medical Physics at the UFS, the Animal Research Centre, and other collaborators in South Africa and abroad, but especially the methodology we utilise to conduct research (studying the chemical manner in which drugs are absorbed in cancer as well as the time involved), enhances the possibility of making a contribution to cancer research,” says Prof Roodt.

Technique to detect cancer spots on bone
According to the professor, there are various ways of detecting cancer in the body. Cancer can, inter alia, be identified by analysing blood, X-rays (external) or through an internal technique where the patient is injected with a radioactive isotope.

Prof Roodt explains: “The doctor suspects that the patient has bone cancer and injects the person with a drug consisting of an isotope (only emits X-rays and does no damage to tissue) that is connected to a phosphonate (similar to those used for osteoporosis). Once the drug is injected, the isotope (Technetium-99m) moves to the spot on the bone where the cancer is located. The gamma rays in the isotope illuminate the area and the doctor can see exactly where treatment should be applied. The Technetium-99m has the same intensity gamma rays as normal X-rays and therefore operates the same as an internal X-ray supply.” With this technique, the doctor can see where the cancer spots are within a few hours.

The same technique can be used to identify inactive parts of the brain in Alzheimer patients, as well as areas of the heart where there is no blood supply or where the heart muscle is dead.

Therapeutic irradiation of cancer
For the treatment of pain connected with cancer, the isotope Rhenium-186 is injected. Similar to the manner in which the Technetium-99m phosphonate compound is ingested into the body, the Rhenium-186 phosphonate travels to the cancer spots. Patients thus receive therapeutic irradiation – a technique known as palliative therapy, which is excellent for treating pain. A dosage of this therapy usually lasts for about two months.

The therapy is, however, patient specific. The dosages should correspond with the occurrence and size of cancer spots in the patient’s body. First, the location of the cancer will be determined by means of a technetium scan. After that, the size of the area where the cancer occurs has to be determined. The dosage for addressing total pain distribution will be calculated according to these results.

Technique to detect cancer spots on soft tissue
Another technique to detect cancer as spots on bone or in soft tissue and organs throughout the body is by utilising a different type of irradiation, a so-called PET isotope. The Fluor-18 isotope is currently used widely, and in Pretoria a machine called a cyclotron was produced by Dr Gerdus Kemp, who is a former PhD graduate from the Inorganic Research Group. The F-18 is then hidden within a glucose molecule and a patient will be injected with the drug after being tranquillised and after the metabolism has been lowered considerably. The glucose, which is the ‘food' that cancer needs to grow, will then travel directly to the cancer area and the specific area where the cancer is located will thus be traced and ‘illuminated’ by the Fluor-18, which emits its own 'X-rays'.

In the late 80s, Prof Roodt did his own postdoctoral study on this research in the US. He started collaborating with the Department of Nuclear Medicine at the UFS in the early 90s, when he initiated testing for this research.

Through their research of more than 15 years, the Inorganic Group in the Department of Chemistry has made a major contribution to cancer research. Research on mechanisms for the detection of cancer, by designing new clever chemical agents, and the chemical ways in which these agents are taken up in the body, especially contributes to the development in terms of cancer therapy and imaging, and has been used by a number of hospitals in South Africa.

The future holds great promise
Prof Roodt and his team are already working on a bilateral study between the UFS and Kenya. It involves the linking of radio isotopes, as mentioned above, to known natural products (such as rooibos tea), which possess anti-cancer qualities.

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