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How we proved a Rembrandt painting owned by the University of Pretoria was a fake

How we proved a Rembrandt painting owned by the University of Pretoria was a fake

THE paintings of Dutch master Rembrandt van Rijn are displayed in prestigious art galleries in capital cities around the world. GERARD DE KAMPER, Chief Curator Collections, lecturer, PhD candidate, University of Pretoria ISABELLE MCGINN, Lecturer and conservator, University of Pretoria One – a small oil painting on a wood panel depicting the profile of an old man in a hat and cloak – made its way to South Africa in the late 1950s. It was part of an extensive collection belonging to a Dutch businessman, JA van Tilburg, who emigrated to the country. In 1976 the work was donated to…
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We’re a step closer to figuring out why mosquitoes bite some people and not others

We’re a step closer to figuring out why mosquitoes bite some people and not others

MOSQUITOES contribute to the transmission of life-threatening diseases that include Zika, dengue, chikungunya, Rift Valley fever and malaria. Of these, malaria carries the most risk accounting for 229 million cases and more than 400,000 deaths in 2019. Africa accounted for 67% (274 000) of all malaria deaths worldwide. MADELIEN WOODING, Chromatographic Officer and Researcher, University of Pretoria YVETTE NAUDÉ, Manager: Chromatography Mass Spectrometry, University of Pretoria Malaria is caused by parasites that are transmitted to people through the bites of infected female Anopheles mosquitoes. Vector control strategies such as indoor residual spraying and long-lasting insecticidal net programmes have played a…
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Malaria control needs longer lasting repellents. We’re a step closer to finding one

Malaria control needs longer lasting repellents. We’re a step closer to finding one

MALARIA is one of the leading causes of illness and death around the world. The disease is primarily caused by the bite of mosquitoes carrying a parasite. In 2019, around 229 million malaria cases were reported with an estimated number of 409,000 deaths. Most of the reported cases occurred in sub-Saharan Africa. Children younger than five years and pregnant women are most prone to malaria. ANTÓNIO BENJAMIM MAPOSSA, Postdoctoral fellow in Chemical Engineering, University of Pretoria To prevent malaria, the World Health Organisation (WHO) recommends spraying insecticides indoors and using bed nets treated with long-lasting insecticide. These interventions have one…
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