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17 October 2023 | Story Nonsindiso Qwabe | Photo Nonsindiso Qwabe
Mokitlane Manyarela
Mokitlane Manyarela reflects on his 41-year journey with the UFS Qwaqwa Campus

He has seen the many changing faces of the Qwaqwa Campus, and four decades later, Mokitlane Manyarela says he would not have it any other way.

Fondly known on campus as ‘Ntate Manyarela’, he has been with the campus for 41 years, having started on 1 January 1982 at the ripe age of 18 years. Manyarela recently received a long-service award for 36 years of service, dating back to when the campus moved to its current location from where it started at Lere la Tshepe in 1982.

He recalls arriving at the campus offices in town in 1982 seeking employment, as there were no “buildings or campus” back then.

“I started working as a general worker because there was nothing else to do. All the university’s content would come from Turfloop in those days. As time went by, I worked in the reprographic section, printing exam papers. That was my first official job until the campus moved in 1988 to where we’re now located. All the buildings that are now filling this campus were constructed right in front of my eyes,” he said.

He went on to work for various departments on the campus, such as procurement, cashiers, and finance. In 2007, he joined the transport department, and that is where he is still working as an assistant officer. “What’s made me stay this long is not getting into fights with anyone and always following instructions given to me. I’ve worked under many different bosses, and I believe that none of them have anything negative to say about me. Therefore, I can say I’ve never had a reason to leave because everything I’ve done, I have done wholeheartedly.”

Manyarela said the university also afforded his wife and children the opportunity to obtain their degrees, which is something he considers a huge achievement. “All that I have has been achieved at this institution. It’s been a wonderful journey. I have no complaints, and I am content. I’ve reached my old age here. I don’t know any other job or work environment; this place has become like home to me, and I’m prepared to still give my all to this university, even though old age is now catching up with me.”

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Discovery in Scorpius constellation may signify clean energy for Earth
2017-01-23

 Description: Discovery in Scorpius constellation may signify clean energy for Earth Tags: Discovery in Scorpius constellation may signify clean energy for Earth

Earlier this year, a group of international astronomers
announced the discovery of an exotic binary star system,
AR Scorpii. The system is in the Scorpius constellation.
Photos: Supplied

See article on Nature’s website 

In future, stargazers and astronomers will look at the Scorpius constellation near the Milky Way with new eyes. Earlier this year, a group of international astronomers announced the discovery of an exotic binary star system, AR Scorpii. The system is in the Scorpius constellation.

Prof Pieter Meintjes, researcher in the Department of Physics at the University of the Free State (UFS), worked with four colleagues on what he describes as a “wonderful discovery”. This sensational discovery, which could lead to the production of cleaner energy on Earth, will be published in the research journal, Nature, early in 2017.

Model developed to interpret new set of measurements
The exotic binary star which was discovered consists of a red dwarf and a white dwarf revolving around each other every 3,5 hours. The binary system showed very prominent pulsations of 117 and 118 seconds respectively. The pulsations can be explained by a bundle radiation produced by the white dwarf star.

“These new observations have shown that the radiation is strongly polarised, a sign that we are dealing with synchrotron radiation here. Synchrotron radiation is produced by electrons accelerated to extremely high energy levels in the magnetic field of the white dwarf star,” says Prof Meintjes.

He developed a theoretical model to interpret a new set of measurements that was taken by the 1,9 m telescope and the 10 m SALT telescope at the South African Astronomical Observatory (SAA0).

Totally unique phenomenon could contribute to energy production on Earth
“I further indicated that the interaction between the magnetic fields of the white dwarf star and the red dwarf star induces secondary processes that specifically describe the behaviour of the radiation in the radio band and infrared band accurately. AR Sco is the first white-red dwarf binary system of which all the pulsated radiation could be explained by the synchrotron process, which is totally unique,” says Prof Meintjes.

According to Prof Meintjes, the value of the model lies in the fact that the processes which produce the radiation in AR Sco, can also be applied to produce energy on Earth.

 

Plasma reactors are based on roughly the same processes which apply in AR Sco, and with refining, it could be utilised to generate electricity in future. This will be much cleaner than nuclear energy.

 

The model developed by Prof Meintjes explains all the radiation in the system – from radio waves to X-rays – in terms of electrons accelerated to extremely high energy levels by electric fields in the system, which then produce synchrotron radiation over a very wide band of the electromagnetic spectrum.

Prof Meintjes is currently working on a follow-up article examining the evolution of the AR Sco, in other words, the origin of such a unique system and the final state towards which it is evolving. “My vision for the immediate future is therefore to develop a model for the evolution of the source concerned,” he says.

 

 

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