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Browsing Chemistry by Issue Date
Now showing items 1-20 of 843
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(University of Pretoria, 1991)Please read the abstract in the dissertation.
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(University of Pretoria, 1993)A method has been developed that uses uranium hexafluoride as the internal standard to quantitatively determine trace impurities in the uranium hexafluoride using relative response factors. A computer program was written ...
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Quantitative and kinetic studies of solid CACO3, Ca(OH)2 and CaO utilizing vibrational spectroscopy (University of Pretoria, 2000)The decomposition of CaCO3 has been studied extensively for many decades. This reaction is the backbone of lime industry. The desired product of the decomposition of CaCO3 is CaO (lime), which is the integral part of many ...
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(Springer, 2000-04)Intumescent flame retardants form a foamed-char barrier layer when exposed to a flame. Conventional systems are based on the acid catalysed dehydration of carbonifics such as dipentaerythritol. Metal oxides also have utility ...
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(University of Pretoria, 2001)Terthienyl (HTTTH) forms part of the family of conjugated 5-membered heterocycles and although many novel conversions of thiophenes and their derivatives have been recorded, the coordination chemistry of terthienyl has ...
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(De Gruyter, 2002-12)Please read abstract in the article.
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(University of Pretoria, 2003)A novel chromatographic method was devised that makes use of the superb group separation power of normal phase supercritical fluid chromatography (SFC) combined with a fast second separation by a resistively heated gas ...
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(University of Pretoria, 2003)Please read the abstract (Summary) in the 00front part of this document
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(University of Pretoria, 2003)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2004)Please read the abstract in the section 00front of this document.
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(University of Pretoria, 2005-08-15)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2005-09-06)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2005-09-09)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2005-09-30)Ultramarine pigments are aluminosilicate-based and contain sulphur-based chromophores. Several samples from two batches of fine fly ash, a predominantly aluminosilicate waste product of coal combustion, were used successfully ...
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(University of Pretoria, 2005-11-30)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2005-11-30)Please read the abstract in the front section of this document
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(University of Pretoria, 2006)The stability constants for the ligand 1-hydroxyl-3-aminopropilydene diphosphonic acid (APD) or Pamidronate with metal ions CdII, PbII and ZnII were established in this work by sampled direct current polarography (DCTAST). ...
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(University of Pretoria, 2006-01-24)The enantioanalysis of compounds of biological importance with a chiral moiety is very important because each enantiomer is a marker for a different disease. Accordingly, very reliable methods of enantioanalysis should be ...
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(University of Pretoria, 2006-01-24)This study focused on the pH dependant mobility of 15 trace elements in river sediments in South Africa. These river sediments originated from the Blesbokspruit (near Witbank in the Mpumalanga Province), the Crocodile River ...
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(University of Pretoria, 2006-02-13)Analog and digital structures can be written into thin surface layers of semiconductors by using focused ion beams of submicron dimensions. By inducing the phase transition from the crystalline (c) to the amorphous state ...
Now showing items 1-20 of 843