astronomy

Tebello Nyokong

Tebello Nyokong is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Tebello Nyokong rather than just read about it. In short: Tebello Nyokong (born 20 October 1951) is a South African chemist and distinguished professor at Rhodes University. She is currently researching photo-dynamic therapy, an alternative cancer treatment method to chemotherapy.

Key takeaways

Tebello Nyokong belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Tebello Nyokong to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Tebello Nyokong from memory before moving on to harder problems.

Reference excerpt

Tebello Nyokong (born 20 October 1951) is a South African chemist and distinguished professor at Rhodes University. She is currently researching photo-dynamic therapy, an alternative cancer treatment method to chemotherapy. In 2007, she was one of the top three publishing scientists in South Africa.

Early life and education

Tebello Nyokong was born in Maseru, Lesotho on 20 October 1951 but spent most of her youth in South Africa. Nyokong came from a poor background facing challenging circumstances. After being sent to live with her grandparents in the mountains of Lesotho she partitioned her childhood caring for sheep and going to school. Nyokong says that she would spend one day at school and then one day with the sheep as someone had to care for them. She published an open letter that she wrote nominally aimed at her 18-year-old self. It reflected that despite the hardships she would face her hard work would allow her to excel in mathematics and science, proving that material poverty does not equate to intellectual poverty. She reminded her self to trust her independent mind and not be swayed by peers or societal expectations and that her determination and love for science would guide her to not only a fulfilling career but also a family and that she would contribute to society. Two years before her matric year she changed from art studies to the sciences, developing an interest in chemistry. She received her Cambridge Overseas School Certificate in 1972. Nyokong obtained her bachelor's degree in both chemistry and biology from the National University of Lesotho in 1977 followed by a Master's degree in Chemistry in 1981 from McMaster University in Ontario, Canada. In 1987, she received her Ph.D. in chemistry from the University of Western Ontario. After earning her PhD, she received a Fulbright fellowship to continue her post-doctoral studies at the University of Notre Dame in the United States.

Career

After finishing her Fulbright fellowship in the United States, Nyokong briefly returned to Lesotho to take a position at the University of Lesotho before taking a position as a lecturer at Rhodes University in 1992. The National Research Foundation gave her a high rating and helped Nyokong obtain a research laboratory at the university. Soon, she moved from lecturer to professor, and then distinguished professor. She is known for her research in nanotechnology, as well as her work on photo-dynamic therapy. Her pioneering research in the latter is paving the way for a safer cancer detection and treatment, without the debilitating side effects of chemotherapy. Nyokong’s research group is involved in the development of multifunctional nanodrugs for diagnostics and therapy by chemically linking metallic, magnetic, or semiconductor nanoparticles to photoactive phthalocyanine photosensitizers. These nanoparticles are designed to accumulate at target sites due to the enhanced permeability and retention (EPR) effect. Nanoparticles can be modified with various functional groups to act as photosensitizers or carriers, creating an all-in-one therapeutic tool. This tool can absorb a broad spectrum of light and convert it to phototoxic species within tumor cells, leading to targeted destruction requiring low light intensity and drug doses. Nyokong noted an exciting scientific challenge facing her field was developing better hybrid materials that act as photocatalysts, which could offer therapeutic value and resistance to microorganisms while also not acting as pollutants. In 2014 she was a professor at Rhodes University in Grahamstown. She was the subject for a photographic portrait for Adrian Steirn's 21 icons which imagined her returned to her childhood role as a shepherd but now the shepherd is an adult and she is wearing her chemist's white coat. Copies of the picture were sold for charity. In 2021, Nyokong co-wrote an article in Nature Materials highlighting obstacles facing researchers in Africa. She and her colleagues wrote that while the government funded university salaries and basic maintenance, international partners were needed to bring more resources to fund research itself. They also noted that collaborative efforts foster a more integrated scientific community and that more effort is needed to bridge the gap between academic research and marketable products, known as the innovation chasm.

Awards and recognition Nyokong is a recipient of South Africa's Order of Mapungubwe, South Africa's highest honour. She received the L'Oréal-UNESCO For Women in Science Award representing Africa and the Arab States in 2009, the South African Chemical Institute Gold Medal in 2012, and was named one of the Top 10 Most Influential Women in Science and Technology in Africa by IT News Africa. In 2013 she was awarded the National Research Foundation's Lifetime Achievement Award. In 2016 she received the African Union Kwame Nkrumah Award for Scientific Excellence at the Continental level in the Basic Science, Technology and Innovation category and in 2017 the Black Science, Technology & Engineering Professionals (BSTEP) Excellence Award.

References

External links

Tebello Nyokong Rhodes researcher profile

Worked examples

Example 1 — a first encounter with Tebello Nyokong

Start with the simplest possible case. Write down what Tebello Nyokong claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Tebello Nyokong before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Tebello Nyokong ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Tebello Nyokong

In research: Tebello Nyokong appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Tebello Nyokong in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Tebello Nyokong is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1951 births, 21st-century South African women scientists, Academic staff of Rhodes University, so understanding it makes those chapters shorter.
In everyday life: Look for Tebello Nyokong outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Tebello Nyokong in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Tebello Nyokong means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Tebello Nyokong out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Tebello Nyokong in simple terms?

Why does Tebello Nyokong matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Tebello Nyokong?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Tebello Nyokong.