Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 246 for “"Oxidised"”.
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An evaluation of sulfidisation in the flotation recovery of heavily oxidised sulfide minerals : with particular reference to oxidised Merensky ores
Includes bibiographical references (p. 165-180).
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Phosphate stabilisation of partly oxidised, polyminerallic mine wastes
… and attenuate metals released from partly oxidised, polyminerallic mine waste (obtained from the Montalbion Silver mine, north Queensland) under laboratory conditions. Sulphide-rich materials comprising the waste at the abandoned Montalbion silver mine have undergone extensive oxidation …
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The influence of oxidised low density lipoproteins on platelet activation
… mechanisms underpinning platelet activation by oxidised LDL (oxLDL). OxLDL but not native LDL (nLDL) induced a modest degree of aggregation, which was ADP dependent. However, oxLDL was able to induce shape change, one of the earliest stages of platelet activation, independently of secondary …
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Studies on the composition of thermally oxidised Fischer-Tropsch waxes
A composition of thermally oxidised Fischer-Tropsch hard wax was proposed based on a study ofthe oxidation products of model compounds, n-Cl6, n-C24 and n-C32. The model compound oxidation yielded isomers of alcohols and ketones with carbon numbers ranging from 2 to the same carbon number as that …
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The role of collectors in the flotation of partially oxidised copper ores
… on the froth flotation performance of partially oxidised and oxidised copper sulphide ores were investigated in this study. More specifically, the role of the functional groups of the collectors, their dosages and the effect of collector mixtures and their dosages were investigated. Batch …
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Ammonia leaching as a pre-treatment for the processing of oxidised PGM ores
… technologies for the treatment of low grade oxidised PGM ores. The exposure of the ore to the atmosphere leads to the formation of an oxidation layer (consisting of base metal oxides) which inhibits the flotation process that requires a clean mineral surface to be effective. Previous studies …
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Investigating iPSC-Derived Macrophage Stimulation with Oxidised Low-Density Lipoprotein as an Effective In Vitro Model of Foam Cells in Atherosclerosis
… quantities of the modified lipoproteins, such as oxidised low-density lipoproteins (oxLDLs), which are then metabolised to release cholesterol and cholesterol esters for use or recycling. Chronic uptake of modified particles eventually reduces the ability of macrophages and VSMCs to effectively …
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The condensation of vapours of binary immiscible liquids
… eutectic mixtures on 25.4 mm diameter oxidised copper and gold plated horizontal tubes. Data are also presented for the condensation of pure steam, toluene and trichloroethylene on the oxidised copper tube and the film heat transfer coefficients obtained agree to within ± 20% of the …
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Safety of n-3 PUFAs during pregnancy and effects on the metabolic phenotype of the offspring
… of the children. In addition, supplementing oxidised fish oil to rats during pregnancy led to greater newborn mortality. As supplements are often oxidised, there is a need to determine the safe dose of oxidised fish oil during pregnancy. The central hypothesis in this thesis is that n-3 PUFAs …
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The bacterial synthesis and characterisation of polyhydroxyalkanoates using waste plastics as carbon sources for novel applications
… use. This study has considered the novel use of oxidised and non-oxidised wax substrates derived from waste polyethylene (PE) as a carbon source for wild-type bacteria. In addition, industrial waste polypropylene (PP) and polystyrene (PS) were used as potential carbon sources. The bacterial …
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Extraction of titania from ilmenite
… at high temperatures. Ilmenite is first oxidised with air, the oxidised ilmenite is then treated with chlorine,' and finally the ferric chloride an.d oxygen produced by the action of chlorine upon oxidised ilmenite are reacted to release chlorine for further use in the process. The …
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Exploring Chemical Crosslinking of the Extracellular Matrix as a Potential Therapy for Recurrent Glioblastoma
… study then examined brain ECM crosslinking using oxidised hyaluronic acid (oxi HA) to prevent glioblastoma cell migration. The results showed that a low concentration of oxidised hyaluronic acid gel with adipic acid dihydrazide restricted glioblastoma cell movement and prevented the descent of …
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Crack growth resistance in nuclear graphite
… energy is recorded in compact tension. In oxidised graphite, the crack growth resistance reduces but the coarser materials still show useful resistance. The fine-grain graphite shows a tendency toward flat R-curve behaviour with increasing oxidation. The mechanisms responsible for …
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Kinetics of carbide dissolution in chromium + molybdenum steels during oxidation
… and M6C carbides in an austenitic matrix were oxidised at 8500C to study their oxidation resistance and a precipitate-free zone formation. Alloy design was carried out using a thermodynamic software Thermo-Calc. Carbides in these alloys were expected to dissolve during oxidation, releasing …
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Targeted and untargeted metabolomic profiling of human serum, urine and brain by liquid chromatography mass spectrometry (LC-MS)
… in distinguishing the control and SDB brains.;Oxidised fatty acids have such as oxylipins and prostaglandins have profound effects on human physiology and are present a low levels in biological fluids. In project 4 a novel tagging method for the analysis of oxidised fatty acids was developed. …
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The catalytic oxidation of manganese in water treatment clarification processes
… manganese. Specifically adsorbed manganese is oxidised at the iron (III) oxide surface when solution pH approaches 8.5- The initial reaction product is presumed to be a manganese (III) oxide. The extent to which these removal processes contribute to manganese removal at plant scale will depend …
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Cyclic nitrones: oxidation studies and the synthesis of a heterocyclic nitrone
… towards the heterocyclic nitrone. Arylhydrazines oxidised the heterocyclic nitrone with cleavage of the ether band, yielding glyoxal osazones. The same nitrone was very rapidly oxidised to 4-hydroxy-3-morpholone by ferric chloride. This cyclic hydroxamic acid underwent further oxidation at a …
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Molecular Characterisation of Fluidised Catalytic Cracker Feedstocks using Ruthenium Tetroxide Oxidation: a Study of Model Hydrocarbons
… moieties. Unsubstituted aromatic carbon is oxidised to CO2 whereas substituents are preserved as carboxylic acids. "Retro-structural analysis" involves reconstruction of the products of oxidation to reveal the original molecule or 'average' molecule. However, previous studies have …
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The role of lipoproteins in vascular calcification and plaque stabilisation
… of HDL, LDL, VLDL and their pro-atherogenic oxidised forms (ox) on atherosclerotic VC in vitro, in vivo and in human plasma samples ex vivo, and aims to assess these using standardised models. Using in vitro calcification assays developed in chapter 3, we observed that both oxVLDL and oxLDL …
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Magneto-optical studies of RirA and cytochrome cd1
… by pre-exposure to the substrate NO2 −. Although oxidised cd1 from Pseudomonas aeruginosa does not require similar activation, it undergoes the same reaction with NO2 − to produce a novel form of nitrosyl-heme d1. The NO derivative of Pseudomonas aeruginosa cd1 was prepared and characterised using …
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