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Die adsorpsie van atrasien deur verskillende kleiminerale en die invloed daarvan op die mobiliteit van atrasien
(Potchefstroom University for Christian Higher Education, 1993)
Atrazine (2-chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine)is a pre-emergence herbicide used mainly on maize. The influence of various clay minerals, i.e. illite-vermiculite mixtures, montmorillonite, kaolinite, ...
Kwantifisering van urinêre organiese materiaal by die identifisering van aangebore metaboliese siekte-toestande
(Potchefstroom University for Christian Higher Education, 1993)
Inherited metabolic diseases are the cause of 25 - 35% of infant deaths in industrialized countries. In order to facilitate the treatment and genetic counselling of these diseases, early diagnosis is imperative. The high ...
Alkeenmetatese met behulp van 'n reniumkatalisator
(Potchefstroom University for Christian Higher Education, 1996)
From literature t is well known that the 3% Re2O7/SiO2.Al2O3-catalyst system is very effective as a metathesis catalyst system for normal alkenes. The addition of a cocatalyst to this system not only makes the system ...
The stratigraphy and sedimentology of the Black Reef Quartzite Formation, Transvaal Sequence, in the area of Carletonville and West Rand Goldfields
(Potchefstroom University for Christian Higher Education, 1996)
In the study area the Black Reef Quartzite Formation lies unconformably at the base of the early Proterozoic Transvaal Sequence of South Africa. The Formation comprises a succession of interbedded siliceous quartzites and ...
Studies on the metabolism of ochratoxin A
(Potchefstroom University for Christian Higher Education, 1999)
The ochratoxins, metabolites of certain Aspergillus and Penicillium species are the first group
of mycotoxins discovered subsequent to the epoch-making discovery of the aflatoxins.
Ochratoxin A (OTA) is a very important ...
The synthesis of 4–methyl–3–thiosemicarbazide (MTSC) using N,N–diisopropylethylamine as base
(Potchefstroom University for Christian Higher Education, 1999)
4-Methyl-3-thiosemicarbazide (MTSC) is an intermediate for the synthesis of
5-t-butyl-2-methylamino-1,3,4-thiadiazole (BTDA), the precursor of
tebuthiuron, a broad-spectrum herbicide.
The current production process for ...
Malaria vector control and occurrence, levels and dynamics of DDT in breast milk in certain rural areas of KwaZulu
(Potchefstroom University for Christian Higher Education, 1990)
The WHO considers DDT as safe to man and environment when applied intra-domiciliary for malaria control. Research into the possible health effects under prevailing conditions, taking social customs into account, have, ...
'n Ondersoek na semantiese nette in probleemoplossing vir die skoolvak Wiskunde
(1998)
The problem-centred approach in the instruction of Mathematics has gained much ground
in the last few years. Different points of view exist on how this approach ought to be
implemented in schools. Many researchers place ...
Character in the novel Mntanami, Mntanami, by C.L.S. Nyembezi
(Potchefstroom University for Christian Higher Education, 1997)
Different methods for the representation of character were studied in this min-dissertation.
These were especially applied to the representation of character in the novel Mntanami,
Mntanamil by the author CLS Nyembezi. ...
Waste disposal or discharge : a harmonised regulatory framework towards sustainable use
(Potchefstroom University for Christian Higher Education, 1999)
The discharge of waste into a water resource and its disposal on land can easily cause pollution, especially of the water resource. However, it has long been accepted that these activities also form an integral part of a ...