Author:Roberts, DE; Du Plessis, A; Botha, LRDate:2009The average ablation depth per pulse of silver foil by 130 fs laser pulses has been measured in vacuum over a range of three orders of magnitude of pulse fluence up to 900 J cm_2. In addition, double pulses with separations up to 3.4 ns have ...Read more
Author:Roberts, DE; Du Plessis, A; Botha, LRDate:2009The average ablation depth per pulse of silver foil by 130 fs laser pulses has been measured in vacuum over a range of three orders of magnitude of pulse fluence up to 900 J cm-2. In addition, double pulses with separations up to 3.4 ns have ...Read more
Author:Du Plessis, A; Strydom, CA; Uys, H; Botha, L; Roberts, T; Dlamini, THDate:Sep 2010Femtosecond laser control of chemical reactions is made possible through the use of pulse-shaping techniques coupled to a learning algorithm feedback loop – teaching the laser pulse to control the chemical reaction. This can result in ...Read more
Author:Du Plessis, A; Strydom, CA; Uys, H; Botha, L; Roberts, T; Dlamini, THDate:31 Aug 2010Femtosecond laser control of chemical reactions is made possible through the use of pulse-shaping techniques coupled to a learning algorithm feedback loop – teaching the laser pulse to control the chemical reaction. This can result in ...Read more
Author:Du Plessis, A; Strydom, CA; Uys, H; Hendriks, A; Botha, GN; Botha, LRDate:Jul 2011Results from experiments aimed at bimolecular chemical reaction control of CO and H2 at room temperature and pressure, without any catalyst, using shaped femtosecond laser pulses are presented. A stable reaction product (CO2) was measured ...Read more
Author:Mthunzi-Kufa, Patience; Dholakia, K; Gunn-Moore, FDate:Aug 2011Owing to their self renewal and pluripotency properties, stem cells can efficiently advance current therapies in tissue regeneration and/or engineering. Under appropriate culture conditions in vitro, pluripotent stem cells can be primed to ...Read more
Author:Ombinda-Lemboumba, Saturnin; du Plessis, A; Botha, LR; Rohwer, EG; Steenkanp, CMDate:01 Sep 2010Phthalocyanines are new class of photosensitiser used for photodynamic therapy. These drugs are used to treat small and superficial tumours. In recent years, a particular attention has been given to phthalocyanine in order to search suitable ...Read more
Author:Van Zyl, PJDate:Apr 2006The presentation is based on the new challenges facing an age old technology of fermentation. These challenges were presented at the SASM Conference, the conclusion been that the future of fermentation is only limited by our imagination. ...Read more
Author:Mnkeni, PNS; Austin, LMDate:Jan 2009Ecological sanitation is a system that, unlike the traditional waterborne sewerage and pit toilet systems, regards human excreta as a resource to be recycled rather than as a waste. There is, however, little or no information on the fertiliser ...Read more
Author:Rashamuse, K; Sanyika, W; Ronneburg, T; Brady, DDate:Jan 2012A feruloyl esterase encoding gene (designated fae6), derived from a leachate metagenomic library, was cloned and the nucleotide sequence of the insert DNA determined. Translational analysis revealed that fae6 consists of a 515 amino acid ...Read more
Author:Nel, M; Theron, BertusDate:Jun 2010This article discusses the determination of uncertainty contributions when performing a power responsivity calibration for a fibre optic power meter.Read more
Author:Fon, RC; Ndjiongue, AR; Ouahada, K; Abu Mahfouz, Adnan MIDate:Jun 2023The exponential increase in the demand for a fast and reliable wireless mobile network motivates the need for researchers to engage more actively in visible light communication (VLC) technology. This increase happens in parallel with the ...Read more
Author:Botha, Anton F; Roux, JADate:Nov 2008South Africa has over 4 million indigenous goats (Boer, Savannah and Nguni/Mbusi breeds), many of which have two coats of fibre, namely a cashmere like fine down and a coarse guard hair. These goats are primarily kept for their meat, milk and ...Read more
Author:Botha, Anton F; Roux, JADate:Nov 2008South Africa has over 4 million indigenous goats (Boer, Savannah and Nguni/Mbusi breeds), many of which have two coats of fibre, namely a cashmere-like fine down and a coarse guard hair. These goats are primarily kept for their meat, milk and ...Read more