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 122 for “"pre-treated"”.
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Impact of operating conditions on thermal hydrolysis pre-treated digestion return liquor
… inorganic nitrogen produced due to the thermal pretreatment, organic nitrogen remains a parameter of concern for utilities employing THP pretreatment. The impact of operating conditions of the THP on dissolved organic nitrogen (DON) and UV absorbance in return liquor was investigated. Operating …
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Assessment of copper recovery from leaching of microwave pre-treated tailing from the Otjihase mine
… for a vast range of industrial applications, and predominantly electrical applications. Currently, Namibia has a limited number of active copper mines, and hence a means to recover copper from secondary sources would positively impact Namibia's copper production and would also be beneficial to the …
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Surface analysis of sodium oleate coated poly (ethylene terephthalate) films
Polymer films are often pre-treated to alter surface properties resulting in improved adhesion and wettability. The objective of the present work was to demonstrate the applicability of surface-sensitive techniques in the analysis of polymer films coated with thin overlayers. The surface or …
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Modulation of human adipose-derived stem cells and dermal fibroblasts in co-cultures by activation of the IL-6 trans-signalling pathway via the soluble IL-6Rα receptor
… were co-cultured to assess cell migration when pre-treated with the soluble human IL-6Rα receptor (rhIL-6Rα). In addition, secreted cytokine levels (TGFβ1, TGFβ3 and VEGF) and biomarker expression (TGF β1RII, SMAD2/3, SMAD 1/5/9 and SMA) were quantitated. Although both cell types secreted IL-6, …
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The role of citrate in plant-pathogen interactions
… have evolved a wide range of mechanisms to suppress the immune response that they trigger in their hosts, including the production of effectors and phytotoxins. The tri-carboxylic acid citrate, which is secreted into the apoplast by both bacterial pathogens and plant hosts has previously been …
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The Influence of Propofol Administration Time on Oxygen Glucose Deprivation-Reperfusion Injury in Rat mixed Cortical Cultures Focused on N-Methyl-D-Aspartate (NMDA) Receptor
… Propofol (1, 10 25, 50, 100 μM) were treated from 1 hr prior to the OGD injury (pre-treatment)or from the initiation of the OGD injury(co-treatment) to the end of the reperfusion periods. In Control group, no drug was treated and incubated in the aerobic chamber. In Blank and Full-kill …
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Effect of aging on metabolic status and hormone responsiveness in the ovary
… significant effects of mares' ages on gene expression in granolosa cells. Most of the effects we noted were on the expression of AMPK subunits, italics indicating genes rather than gene protein products, although there were significant effects of animal age on GLUT4 and IGF-1R expression as …
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Effect of breathing hypoxic gas mixtures followed by irradiation on tumour cell survival in experimental mouse tumors
… the CaNT tumour between the mice that received pre-treatment and radiation and those that received radiation alone. In the rhabdomyosarcoma an increase in regrowth delay was observed in the mice that were exposed to the 8% oxygen environment for a 72-hour period prior to being irradiated. These …
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The Role of Phosphodiesterases in Cyclic Nucleotide Compartmentation Across Different Pathways in the Adult Rat Ventricular Myocyte
… 30 nM), on various cellular parameters in the presence of either cilostamide (1 µM) a selective PDE3 inhibitor, or Ro 20-1724 (10 µM) a selective PDE4 inhibitor. In myocytes treated with PGE2, unloaded cell shortening and intracellular calcium transients exhibited significantly different …
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Novel methods for on-site and cost-effective quantification of multiple targets using functional DNA and portable instruments
… KitTM, where sample is applied to a dipstick pre-treated with aptamer-conjugated magnetic beads, leading to the release of invertase-DNA strands. The strands then flows up with the liquid to an absorption pad pre-treated with sucrose, where the invertase linked on the strands converts sucrose …
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STUDIES ON THE ACUTE AND LONG-TERM EFFECTS OF MDMA (3,4- METHYLENEDIOXYMETHAMPHETAMINE)
… at different ambient temperatures. Rats were pre-treated with MDMA (12.5 mg/kg) or saline and 6 weeks later received either a single dose of MDMA (5 mg/kg) or 3 doses of MDMA (2 or 4 mg/kg), every 3 hours whilst housed at 30°C. Rats pre-treated with MDMA showed a significantly greater …
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Photoelectrochemical and Chemoenzymatic Reforming for Sustainable Fuel Production
… the photocatalytic reforming (PC reforming) of pre-treated waste substrates to organic products, accompanied with clean hydrogen (H₂) generation. However, these conventional solar-driven processes suffer from major drawbacks such as low production rates, poor product selectivity, CO₂ release, …
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Role of Endogenous Prostaglandins on Kainic Acid Induced Seizure Activity
… inhibitors aggravates the epileptic seizure. Pretreatments with NSAID(nonsteroidal anti-inflammatory drug) including COX-2 inhibitors such as indomethacin, nimesulide and celecoxib is known to aggravate the kainic acid(KA)-induced seizure activity. However it is not known whether the …
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The Development of Sustainable Internal Curing Agents Using Natural Hollow Fibres
… focused on examining the impact of different pre-treatment methods on the morphology, chemical composition, and hygroscopic characteristics of MW fibres in the initial phase. Two pre-treatment methods, namely hydrothermal treatment (HT), and hybrid treatment (HY), a combination of hydrothermal …
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Biomethane Recovery Potential from Brewer’s Yeast Using Two-Stage Anaerobic Digestion
… setting up a two-stage reactor, the RBY was pre-treated using the High-Rate Hydrolysis/Acidification (HRHA) process to further evaluate the effect of HRHA on RBY treatment. The average Total Suspended Solid (TSS) solubilization of 15.54% for TRBY had resulted in the increase in methane …
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High-throughput characterisation and device integration of nanomaterials
… >200 devices with high alignment accuracy. The presented method provides the foundation for subsequent research presented in this thesis. The focus then moves to other nanomaterial characterisation methods and investigates spectroscopic ellipsometric contrast microscopy (SECM) for mapping twist …
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Investigating the anti-inflammatory effects of plant derived compounds in tuberculosis using the THP-1 macrophage model
… in the developing world. TB can be effectively treated with the currently available drugs; however, poor adherence to therapy and the emergence of drug resistant bacteria has significantly impaired efforts to eradicate TB. Therefore, new therapies and therapeutic strategies are required to …
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Cassava root (Manihot Esculenta Crantz) characterisation and evaluation of process-induced changes on functional of its flour
… quadratic effect of varying concentrations of pre-treatment (0.6 – 3.4%w/v) and drying temperature (45 – 74⁰C) on thermal, functional and physicochemical properties of cassava flour (CF) from both landraces. Calcium chloride and citric acid were separately applied in pre-treatment of the …
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A Method to Improve Cartilage Integration
One major barrier that prevents cartilage integration following mosaic arthroplasty is the presence of a zone of chondrocyte death (ZCD) that is generated upon osteochondral graft harvest, which can extend up to 400 μm into the cartilaginous portion of the graft. In order for cartilage integration …
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Antithrombotic and anti-inflammatory activity of ethyl acetate extract of Protorhus longifolia stem bark
… diseases, which are the major cause of premature deaths globally. Despite great efforts made in the discovery of antithrombotic agents, ischemic events continue to claim more lives. Thus, there is a need to discover and develop new and more effective antithrombotic drugs, preferably from …
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