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30 December 2019 | Story Thabo Kessah | Photo Thabo Kessah
Gavin Dollman
Gavin Dollman is involved in virtual prospecting for fossils using a drone.

Gavin Dollman is one of the young researchers selected for the international research programme funded through the US-SA Higher Education Network. This prestigious programme is aimed at giving PhD candidates and their supervisors the opportunity to regularly travel to the USA and spend time at participating US universities where their co-promoters will be based.

“The University Staff Doctoral Programme (USDP) has allowed me to bring my idea of collaborative science to fruition. It’s an exciting opportunity,” Dollman said.

Dollman added that his PhD studies would focus on the machine and deep learning for prospecting for palaeontology. He is studying with the Appalachian State University. Other participating universities are Montana and Colorado State.

He has also had the privilege to work alongside a team of Geologists and Paleontologists from the universities of Birmingham, Zurich and Oxford in a project under the auspices of the University of the Witwatersrand’s Evolution Studies Institute (ESI) on a site in rural Eastern Cape.

“My role within this massive project is to perform a detailed survey of the sites and the surrounding area for later analysis. I used a drone known as the DJI Phantom 3 Pro with which I took hundreds of pictures that were later put together to create a detailed map,” he said.

“The maps allowed for virtual prospecting by the team and will in the long term serve as the basis for a predictive fossil model for the area.”

Dollman is a lecturer in the Department of Computer Science and Informatics on the Qwaqwa Campus.

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UFS researchers discover the many uses of the cactus pear
2015-02-17

UFS researchers discover the many uses of the cactus pear

For many South Africans, the dry, arid areas in many parts of the country became synonymous with cactus pear growing at random in the natural veld. For some the fruit of a cactus pear, if chilled really well, is a delicious snack on a hot summer’s day. But few actually know that these cacti can be money growing wild in the veld.

For the past 15 years, scientists  at the University of the Free State (UFS) have been looking into the benefits and many uses of the cactus pear. This project  has grown steadily in vision and dimension, and today the UFS is recognised as a world-leading institution in the world conducting multi-disciplinary research on spineless cactus pear.

Dr Maryna de Wit, from the Department of Microbial, Biochemical and Food Biotechnology, together with Prof Wijnand Swart from the Department of Plant Sciences and Prof HO de Waal from the Department of Animal, Wildlife and Grassland Sciences, determined the nutritional and, more importantly, the commercial and viable uses of the cactus pear.

The aspect of human consumption is now giving the cactus pear the status of ‘superfood’.

Dr De Wit and her team have successfully made various products using either the cactus pear fruit, the cladode (also referred to as the leaf) and the mucilage (the sticky liquid  in the cladode).

Some of these products are:

  • flour for baking carrot cake, biscuits and health breads
  • jam, fruit juice and canned fruit
  • sweets – marshmallows and Turkish delight
  • stir-fry, salads and other cooked dishes.

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