Natural and Agricultural Sciences
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The production of 3-hydroxy fatty acids by the yeast Dipodascopsis uninucleata and its implications
(University of the Free State, 1999-11)English: In 1991, a novel eicosanoid namely 3-hydroxy-5, 8, 11, 14-eicosatetraenoic acid (3-HETE) was uncovered in the yeast Dipodascopsis uninucleata by van Dyk and co-workers. Strikingly, the production of this compound ... -
Mitochondrial sequences reveal a clear separation between Angolan and South African giraffe along a cryptic rift valley
(BioMed Central, 2014)Background: The current taxonomy of the African giraffe (Giraffa camelopardalis) is primarily based on pelage pattern and geographic distribution, and nine subspecies are currently recognized. Although genetic studies ... -
Interpretation of zircon coronae textures from metapelitic granulites of the Ivrea–Verbano Zone, northern Italy: two-stage decomposition of Fe–Ti oxides
(European Geosciences Union, 2017)In this study, we report the occurrence of zircon coronae textures in metapelitic granulites of the Ivrea–Verbano Zone. Unusual zircon textures are spatially associated with Fe–Ti oxides and occur as (1) vermicular-shaped ... -
Mechanisms of strain accommodation in plastically-deformed zircon under simple shear deformation conditions during amphibolite-facies metamorphism
(Elsevier, 2017)This study documents the strain accommodation mechanisms in zircon under amphibolite facies metamorphic conditions in simple shear. Microstructural data from undeformed, fractured and crystal-plastically deformed zircon ... -
The effect of crystal-plastic deformation on isotope and trace element distribution in zircon: Combined BSE, CL, EBSD, FEG-EMPA and NanoSIMS study
(Elsevier, 2016)Plastically-deformed zircon grains from granulite-facies (Ivrea-Verbano Zone, Southern Alps, Italy) and amphibolite-facies (Tauern Window, Eastern Alps, Austria) shear zones have been investigated. The main focus was on ... -
Changes in microbial ecology during poultry production
(University of the Free State, 2000-03)Microorganisms, especially pathogens, play an important role in the deterioration of poultry meat and its products causing spoilage or food poisoning. The meat renders an ideal medium for the growth and progression of ... -
Relationship of corticoid, thyroid and metabolic profiles with fertility of beef females on sourveld and mixed sweetveld
(University of the Free State, 2000-09)English: During the 1981/82 season, first-calf Bonsmara cows on the sourveld (lower plane of natural pasture) supplemented with an NPN lick in winter (sourveld +N), and sourveld not supplemented with an NPN lick in winter ... -
Studies on stalk borers of maize and sorghum in Lesotho
(University of the Free State, 1998-11)English: Investigations on various aspects of stalk borers of maize and sorghum were conducted in Lesotho during the 1995/96, 1996/97 and 1997/98 growing seasons. Aspects investigated were their distribution and relative ... -
Determining the canning quality of small seeded white beans (Phaseolus vulgaris L.)
(University of the Free State, 1999-05)English: It is important to the producers, processors and consumers in south Africa to have dry bean cultivars with acceptable canning quality. Therefore, dry bean breeders needs sui table screening methods to evaluate ... -
Water quality of the Modder River
(University of the Free State, 1998-11)English: The Modder River is a relatively small river which drains an area of 7 960 km² , in the central region of the Free State Province, South Africa and has a mean annual runoff of 184 x 10⁶ m³ . Botshabelo is a city ... -
Genetic improvement of beef cattle in a tropical environment with special reference to the Gudali and Wakwa breeds in Cameroon
(University of the Free State, 1999-11)English:In an attempt to genetically Improve Gudali beef cattle JO Cameroon, two selection experiments were conducted between 1968 and 1988 at the Animal Production and Research Stations of Wakwa, Ngaoundere. The one ... -
Blood parasites of Free State and Lesotho reptiles
(University of the Free State, 2003-07)English: The study of blood parasites of reptiles is a relatively new and unexplored field of research in South Africa. The Free State province and the Lesotho highlands provide a range of reptiles in which their ... -
Assessing genetic diversity and identification of Microcystis aeruginosa strains through AFLP and peRRFLP analyses.
(University of the Free State, 2003-12)English: There are 150 cyanobacterial genera and approximately 2 000 species known in the world. More than 40 of these have toxin producing strains. Cyanobacteria, commonly known as blue-green algae, are often present ... -
Genetic diversity analysis of linseed (linum usitatissimum L.) in different environments
(University of the Free State, 2002-11)English: The study was carried out to assess the genetic diversity of 60 linseed accessions mainly collected from Ethiopia in different environments using morphological and amplified fragment length polymorphism (AFLP) ... -
The utilisation of used and other fats by fungi
(University of the Free State, 2000-09)English: In 1997, Jeffery and co-workers discovered that when Mucor circinelloides t. circinelloides CBS 108.16 was cultivated on 30g/1 sunflower oil and 10g/1 sodium acetate, an improved utilisation of the oil, doubling ... -
Mucoralean fungi present in soil from arid regions in South Africa
(University of the Free State, 1999-11)English: The aim of the first part of the study was to investigate the ecological niche of mucoralean fungi in arid soil, with specific reference to the position these fungi occupy in the biogeochemical cycle of nitrogen. ... -
Analysis of a post-closure safety assessment methodology for radioactive waste disposal systems in South Africa
(University of the Free State, 2000-02)English: Radioactive waste in South Africa is generated through the nuclear fuel cycle and the application of radioactive materials in industry, science and medicine. The radioactive waste is presently disposed at Vaalputs ... -
The development and evaluation of hydrogeochemical prediction techniques for South African coalmines
(University of the Free State, 2003-05)Abstract not available -
Biokatalitiese komponente in sade van enkele spesies uit die families Fabaceae en Caryophyllaceae
(University of the Free State, 2002-11)English: In the south of Germany it was observed that species of the families Fabaceae and Caryophyllaceae survived an unknown environmental catastrophy while this was not the case with plant species from other families ... -
The structure and synthesis of trimeric and related dimeric Proteracacinidins from Acacia heteroensis.
(University of the Free State, 2002-07)English: The presence of 4', 7,8-trihydroxyl substituted flavanoids in plant material is limited to Acacia galpinii and Acacia caffra in Southern Africa. The existence of pyrogallol-type A-ring oligomers in these trees was ...
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