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 15 of 15 for “"membrane modification"”.
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ELECTRODE AND MEMBRANE MODIFICATION OF DIFFERENT REDOX FLOW BATTERIES
… kinetics of 3D current collector as well as the membrane crossover issue. In this thesis, methods of improving electrode interfacial properties and the separator properties were introduced and were applied to both ZBFB and VFB system. Single cell testing, electrochemical measurements and SEM were …
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Nanofiltration membranes modified with aromatic polyamide dendrimers active layers
This thesis describes the modification of the commercial TFC-S nanofiltration membrane with shape-persistent dendritic architectures. Amphiphilic aromatic polyamide dendrimers (G1-G3) are synthesized via a divergent approach and used for membrane modification by direct percolation. The permeate …
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Chemical Inhibition of Nitrification: Evaluating Methods to Detect and Characterize Inhibition and the Role of Selected Stress Responses Upon Exposure to Oxidative and Hydrophobic Toxins
… more quickly because of the presence of membrane modification stress response mechanisms. While testing this hypothesis, we showed that N. europaea modified its cell membrane in response to hydrophobic chemicals using a long-term (hours) membrane modification mechanism that required the …
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Development of in situ synthesis of silver polysulfone membrane for water separation
Water treatment using membrane filtration is one of the common methods that can generate higher amount of quality water in future. However, polymer blending method via ex-situ synthesis method shows some weaknesses on membrane modification such as membrane prone to fouling and hydrophobic. In this …
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Membrane Surface Engineering for Biochemical Applications
<p>Synthetic membranes have been frequently used for many fields, such as, the food and beverage, biopharmaceutical, and biofuel industries. In the beer industry, microfiltration frequently suffers from fouling due to the interaction between different species. It is shown that polyphenols can form …
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Regulatory domains of the Arf GEF Sec7 scaffold autoinhibited and active conformations
… Network (TGN), connects the Golgi to the endomembrane system and balances the flow of membranes and cargo throughout the cell. Virtually all sorting and transport at the TGN is dependent on the small GTPase Arf1 which drives vesicle formation and membrane modification following its activation …
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Structural Insights into Modification and Export of the Pseudomonas aeruginosa Alginate Exopolysaccharide
… precursors are polymerized by Alg8 in the inner membrane upon cyclic diguanylate binding to Alg44. Following polymerization and translocation into the periplasm, the polymer can be modified by epimerization by AlgG, or acetylation by the concerted action of AlgI, AlgJ, AlgF, and AlgX. We proposed …
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Advancing Forward Osmosis for Energy-efficient Wastewater Treatment towards Enhanced Water Reuse and Resource Recovery
… trace organic chemicals. To promote water reuse, membrane-based technologies have emerged as a robust and more efficient alternative to current treatment practice. Among these membrane processes, forward osmosis (FO) utilizes an osmotic pressure gradient across a semi-permeable membrane to reclaim …
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Characterisation of feed and membrane properties for industrial ultrafiltration management
… industrial management of ultrafiltration (UF) membranes requires an assessment of the impact of feed and membrane characteristics on fouling behaviour in complex feed scenarios. However, this assessment is limited by current understanding of (a) the utility of common foulant characterisation …
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A Molecular and Phylogenetic Analysis of Cryobiosis in Nematodes of the Genus Panagrolaimus
… in the oxidative stress response, transporting, membrane modification, metabolism, signalling and cytoskeleton remodelling.
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Solvent resistant microporous/nanoporous polymeric hollow fiber and flat film membranes and their applications
… process streams may be carried out by membrane processes such as nanofiltration/ultrafiltration/microfiltration and membrane solvent extraction. Lack of solvent stability and chemical stability of most commercially available membranes is limiting the utilization of the above mentioned …
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Utilizing Nanoporous Alumina Membranes for Molecular Transport and Silica Nanotube Synthesis
Alumina-based nanomembranes with pores of ̃200 nanometers in diameter were modified with a variety of different substituted silanes. The transport of ions through these treated membranes was studied using several analytical tools such as ultraviolet-visible and fluorescence spectroscopy. The …
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Functional Study of Lipoxygenase-mediated Resistance to Fungal Pathogens in Maize for Milk-chain Safety and in Grapevine for Sustainable Viticulture
… approach to control these pathogens. Lipid membrane modification and peroxidation of polyunsaturated fatty acids (PUFAs) into oxylipins are reported in plants as a response to fungal pathogens. In this respect, lipoxygenase genes (LOXs) play a crucial role in the peroxidation of …
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Metal oxide modified tubular ceramic membrane for the separation of oil-in-water emulsion.
… flocculation, bioremediation, centrifugation, membranes, etc. This is mostly due to the oil droplet size falling in the emulsified range or nano range, which is easily stabilised with surfactant present in the O/W. Recently, membrane technology has been the most researched approach for the …
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Development of Novel High Temperature Mixed Matrix Membranes (MMMs) for Oil Sands Wastewater Treatment
… strategical solution to addressing these issues. Membrane technology is a promising option for OSPW treatment due to its high removal efficiency, small footprint, facile operation, installation and scaleup. Mixed matrix membranes (MMMs) prepared by mixing super-hydrophilic zwitterionic materials …