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09 May 2018 Photo Varsity Sports
Maryke Coetzee is the new captain of the Crinums netball team
Maryke Coetzee is the new captain of the Crinums netball team.

Despite being a very young team the Free State Crinums are packed with Kovsie players, who will start the Brutal Fruit Netball Premier League as one of the strongest contenders and will hopefully be crowned the country’s best netball province.

The five-week long competition starts on Friday (11 May) in Johannesburg. The Crinums is a de facto Kovsie team with all 15 squad members currently doing a course at the university. Eleven of them were in action for the Kovsies in the Varsity Netball competition in 2017. They have only lost four players from last year which, along with the defending champs, the Jaguars, is the fewest by any team. They also boast experience in every position. The four newcomers in the squad are Sikholiwe Mdletshe, Jana Scholtz, Rykie Venter and Marétha van Heerden. Mdletshe and Venter have played for the Kovsies before. 

After winning the trophy for three years in a row, the Crinums were unable to defend it in 2017 when they finished fifth. It was, however, with a team that was officially the youngest, with an average age of 21 years and five months. This year it has increased to 21 years and six months. 

The team is coached by Kovsie netball coach, Burta de Kock, and skippered by goalkeeper Maryke Coetzee. She and Tanya Mostert (goal defender) will participate in their fifth Premier league.

The Crinums start with two matches against teams they haven’t lost to before. On Friday night they tackle the Sunbirds from Mpumalanga and a day later the Baobabs from Limpopo.

The Crinums squad: Alicia Puren, Ané Retief, Gertriana Retief, Jana Scholtz, Khanyisa Chawane, Khomotso Mamburu, Lefébre Rademan, Luscha Pienaar, Marétha van Heerden, Marna Claassens, Maryke Coetzee, Meagan Roux, Rykie Venter, Sikholiwe Mdletshe, Tanya Mostert.

News Archive

Fight against Ebola virus requires more research
2014-10-22

 

Dr Abdon Atangana
Photo: Ifa Tshishonge
Dr Abdon Atangana, a postdoctoral researcher in the Institute for Groundwater Studies at the University of the Free State (UFS), wrote an article related to the Ebola virus: Modelling the Ebola haemorrhagic fever with the beta-derivative: Deathly infection disease in West African countries.

“The filoviruses belong to a virus family named filoviridae. This virus can cause unembellished haemorrhagic fever in humans and nonhuman monkeys. In literature, only two members of this virus family have been mentioned, namely the Marburg virus and the Ebola virus. However, so far only five species of the Ebola virus have been identified, including:  Ivory Coast, Sudan, Zaire, Reston and Bundibugyo.

“Among these families, the Ebola virus is the only member of the Zaire Ebola virus species and also the most dangerous, being responsible for the largest number of outbreaks.

“Ebola is an unusual, but fatal virus that causes bleeding inside and outside the body. As the virus spreads through the body, it damages the immune system and organs. Ultimately, it causes the blood-clotting levels in cells to drop. This leads to severe, uncontrollable bleeding.

Since all physical problems can be modelled via mathematical equation, Dr Atangana aimed in his research (the paper was published in BioMed Research International with impact factor 2.701) to analyse the spread of this deadly disease using mathematical equations. We shall propose a model underpinning the spread of this disease in a given Sub-Saharan African country,” he said.

The mathematical equations are used to predict the future behaviour of the disease, especially the spread of the disease among the targeted population. These mathematical equations are called differential equation and are only using the concept of rate of change over time.

However, there is several definitions for derivative, and the choice of the derivative used for such a model is very important, because the more accurate the model, the better results will be obtained.  The classical derivative describes the change of rate, but it is an approximation of the real velocity of the object under study. The beta derivative is the modification of the classical derivative that takes into account the time scale and also has a new parameter that can be considered as the fractional order.  

“I have used the beta derivative to model the spread of the fatal disease called Ebola, which has killed many people in the West African countries, including Nigeria, Sierra Leone, Guinea and Liberia, since December 2013,” he said.

The constructed mathematical equations were called Atangana’s Beta Ebola System of Equations (ABESE). “We did the investigation of the stable endemic points and presented the Eigen-Values using the Jacobian method. The homotopy decomposition method was used to solve the resulted system of equations. The convergence of the method was presented and some numerical simulations were done for different values of beta.

“The simulations showed that our model is more realistic for all betas less than 0.5.  The model revealed that, if there were no recovery precaution for a given population in a West African country, the entire population of that country would all die in a very short period of time, even if the total number of the infected population is very small.  In simple terms, the prediction revealed a fast spread of the virus among the targeted population. These results can be used to educate and inform people about the rapid spread of the deadly disease,” he said.

The spread of Ebola among people only occurs through direct contact with the blood or body fluids of a person after symptoms have developed. Body fluid that may contain the Ebola virus includes saliva, mucus, vomit, faeces, sweat, tears, breast milk, urine and semen. Entry points include the nose, mouth, eyes, open wounds, cuts and abrasions. Note should be taken that contact with objects contaminated by the virus, particularly needles and syringes, may also transmit the infection.

“Based on the predictions in this paper, we are calling on more research regarding this disease; in particular, we are calling on researchers to pay attention to finding an efficient cure or more effective prevention, to reduce the risk of contamination,” Dr Atangana said.


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