Sample size was calculated using World Health Organisation (WHO) sample size calculator and using data from an earlier study.14,15 which reported the prevalence of bacterial contamination at 45% on dental burs. Absolute precision was kept at 20% and confidence interval (CI) at 95 %.
During collection, the burs were handled using sterile technique to prevent any contamination.
All the burs of test groups and positive control group were then used for access opening in permanent teeth and after the procedure the burs that were contaminated from bacteria, blood, saliva, tooth and tissue debris were carried using sterile technique to the sterilisation department except positive control group burs where different cleaning methods were used prior to steam autoclave.
Primed (Hays-treated) 'Texoka' buffalograss burs were fed in the first experiment.
Wet sample weights were determined, and buffalograss burs and caryopses, and legume seeds were recovered from the digesta using a dilution and settling method similar to that described by Ocumpaugh et al.
Another BURS official, Ms Lorato Selemogwe cautioned against tax evasion, saying it was a serious offence that attracted serious penalties.
She stated that BURS had a mandate to perform tax assessments and collections of funds for the benefit of the country, while the community had the responsibility to file tax returns and keep all the records, adding that all goods coming into the country must be declared.
He added that BURS management had instituted a debt management strategy to recover the debt.
He said the Ministry of Finance and Economic Development had agreed on arrangement where BURS would forward request for debt write-offs in accordance with the provisions of the tax statutes.
Furthermore, he noted that when he joined BURS as the chairperson, the organisation collection stood at P15.8 billion and at his departure the collection stood at P42 billion and rising at the same time.
'It is also worth noting that when Dr Nyamadzabo assumed chairmanship of the BURS board, BURS had rudimentary infrastructure in terms of residential and office accommodation as well as ICT across the country.
'In this regard, BURS annually located a significant proportion of its budget to training.
Mr Morris noted that the investment in training complemented by other tax administration reforms that BURS had embarked on had resulted in success for the revenue services.