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 13 of 13 for “"FLOW THROUGH SYSTEM"”.
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Biological and economical feasibility studies of using seaweeds Ulva lactuca (Chlorophyta) in recirculation systems in abalone farming
… seaweed-abalone integrated aquaculture system using Ulva lactuca was feasible as well as to test the differences between a commercial gravel bed recirculation system to an existing flow through system. These studies were carried out at two abalone farms: Danger Point (I & J) (140 km east …
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Surface Directed Monoclonal Antibodies against STEC Aid in the Reduction of Pathogen Detection Times from Food and Water
… (1) the filtration of enrichment culture through a gradient of filtration membranes (decreasing pore sizes), followed by capture using specific monoclonal antibody (mAb)-coated Dynabeads, and detection via fluorescence microscopy, (2) the addition of enrichment culture into a flow through …
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Manganese dioxide reduction kinetics by Geobacter sulfurreducens and associated biofilm morphology in a flow-through reactor
… that convert metals to lower redox states through oxidation and reduction reactions. They utilize more metal than is needed for biosynthesis because they can conserve energy through the reduction of metals. This ability of DMRBs permits them to influence nutrient cycling in marine and …
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Degradation of Emerging Contaminants by Advanced Oxidation Using Multi-Walled Carbon Nanotubes and Continuous Ozone Injection
… eliminate emerging contaminants from our water systems. AOPs increase the generation of hydroxyl radicals (•OH) in oxidation reactions, which are less selective and more reactive than other oxidants, such as ozone, so they are more effective at degrading persistent compounds. This study explored …
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Ecological studies on:(a) the use of colonisation samplers in relation to biological surveillance of river water quality (b) the requirements of freshwater gastropoda
… concluded that a completely different scoring system was necessary for lowland rivers. Macroinvertebrates colonising S. Auf. U. in simulated streams, lowland rivers and the R. Churnet reflected water quality. A variety of pollution and diversity indexes were applied to results from lowland …
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Effects of Ammonia, Salinity and Oxygen on the Growth and Energetics of the Grass Shrimp, <i>Palaemonetes pugio</i>
… of aquatic animals exposed to stress.</p> <p>A flow-through system was used to produce combinations of ammonia concentrations (0, 3, 6 and 12 mg/l) and salinities (20, 25, 30 and 35 ppt) for 21-day tests. The tests were conducted at high (>5 mg/l) and low (1.7 mg/l) dissolved oxygen (D.O.) …
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Advanced dielectrophoretic cell separation systems
… A novel dielectrophoretic cell separation system has been developed, which is capable of processing large sample volumes (~50mL) in a flow through system. Previously reported dielectrophoretic cell separator systems typically process sample volumes in the 100mL range. The electrode …
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Development of a small-scale electro-chlorination system for rural water supplies
… water in South Africa’s rural areas, sustainable systems for water disinfection at the village-scale of operation are required.In this thesis, the development of a small-scale water chlorination system that runs on salt and solar panels is described. The system combines a membrane-based …
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Polysaccharide controls on the kinetics and thermodynamics of CaCO₃ nucleation: Insights for biological crystallization and other biofunctions
… polysaccharides are ubiquitous in living systems. This class of biomacromolecules modulates diverse biochemical processes from cell signaling to biomineralization, yet our knowledge of how glycomaterials influence biological processes is limited compared to proteins. We particularly lack a …
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ΑΝΑΛΥΤΙΚΕΣ ΕΦΑΡΜΟΓΕΣ ΧΗΜΕΙΟΦΩΤΑΥΓΕΙΑΣ ΑΠΟ ΑΝΑΓΩΓΗ ΤΕΤΡΑΣΘΕΝΟΥΣ ΔΗΜΗΤΡΙΟΥ
THIS DOCTORAL THESIS IS FOCUSED ON THE STUDY OF NEW CHEMILUMINESCENT REACTIONS WHICH OCCUR DURING REDUCTION OF TETRAVALENT CERIUM. THESE REACTIONS ARE AMONGSTTHE FEW EXAMPLES OF CHEMILUMINESCENCE REACTIONS IN ACIDIC MEDIUM. THE PROCEDURES DEVELOPED WERE SATISFACTORILY APPLIED TO THE ANALYSIS OF …
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Spectroscopic investigation of phytochromes and NIR fluorescent variants
… bacterial variants regulate biological processes through the light dependent switching between metastable states that absorb red and far-red light (Pr and Pfr). The aim of the work was the elucidation of the mechanisms of photoinduced processes in different phytochromes. In the first part of the …
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Microfluidic Transport Studies on Lipid Vesicles
… the laws that govern the transport processes through lipid bilayers. We use the novel microfluidic Octanol-Assisted Liposome Assembly (OLA) technique to obtain lipid vesicles which serve as model membrane for our studies. We perform a literature review, where we discuss OLA and other …
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Developing quantitative approaches to determine microbial colonisation and activity in mineral bioleaching and characterisation of acid rock drainage
… from mineral sulfide ores of varying grades through biohydrometallurgy. It also influences acid formation and mineral deportment from sulfidic waste rock generated in mining processes and is key to its comprehensive waste rock characterisation for acid forming potential. This study assesses …