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 73 for “"nanosized"”.
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Nanosized iron crystallites for Fischer-Tropsch synthesis
… microemulsion system. Secondly preparation of nanosized oxidic iron crystallites with controlled crystallite size via precipitation in water-in-oil microemulsion. Thirdly preparation of the supported catalyst using the same but selected microemulsion systems. Finally catalyst testing under …
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Nanosized systems for efficient delivery of antitumoral and anti-inflammatory drugs
… present PhD thesis was to study two different nanosized systems, liposomes and nanosuspensions. Liposomes were develop with the aim to improve the Triiodothyronine (T3) delivery to hepatic cancer cells and nanosuspensions were proposed to enhance dermal bioavailability of Diclofenac acid, a …
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Composite materials made of chitosan and nanosized apatite : preparation and physicochemical characterization
… composite materials containing chitosan and nanosized hydroxyapatite were investigated. A new preparation approach based on a co-precipitation method has been developed. In its earlier stage of formation, the composite occurs as hydrogel as suspended in aqueous alkaline solution. In order to …
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Direct conversion of carbon dioxide into diethyl carbonate on nanosized cerium-based catalysts
L'abstract è presente nell'allegato / the abstract is in the attachment
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Carbidization and size effects of unsupported nanosized iron in the low temperature Fischer-Tropsch process
In the process of developing the most efficient production of fuels from coal or natural gas, there have been major advances in the development of the catalysts used. Previous work at the Centre for Catalysis Research, at the University of Cape Town, has shown great potential and provided a much …
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Synthesis and Physical Properties of Helical Nanosized Quinoline-based Foldamers: Structure, dynamics and photoinduced electron transport
… application (photoinduced electron transport) of nanosized quinoline-based foldamers have been explored. With double segment strategy, a variety of helical nanosized foldamers (up to 96 quinoline units) were successfully prepared based on 8-aminoquinoline-2-carboxylic acid monomer. The dynamic …
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Development and Characterization of Fluocinolone Acetonide Loaded Nanosized Lipid Carriers for Ocular Delivery via Subconjunctival Route: Synergistic Effect of Vitamin a Palmitate
Though nanotechnology which exploits the use of nanoparticles for therapeutic application have embarked as an emerging tool for drug delivery applications, the delivery of therapeutic molecules into deep ocular compartments has always been a challenging task. In this regard, the main objective of …
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Designing a Method for Measuring Magnetoresistance of Nanostructures
… intent of this research program is to produce nanosized magnetic tunneling junctions, and to study the physical properties of such devices. The physical phenomena of nanosized tunneling junctions are significantly different than that of currently popular micro-sized junctions. There is a …
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Fabrication and characterization of poly(amide-imides)/TiO₂ nanocomposite gas separation membranes
Nanosized Ti0₂ rich domains were generated in-situ within poly(amide-imide) (PAl) and 6F-poly(amide-imide) (6FPAl) by a sol-gel process. The composite films showed a high optical transparency. The morphology of the Ti0₂ rich domains was observed by transmission electron microscopy (TEM). The Ti0₂ …
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Poly(Ethylene Oxide)/Graphene Oxide Polymer Nanocomposite Electrolyte for Lithium Ion Batteries
… compared to that of liquid electrolytes. Nanosized ceramic powders are known to enhance the ionic conductivity as well as the mechanical stability of solid polymer electrolytes. In this study, graphene oxide (GO) nanosheets were used as nanosized fillers in polyethylene oxide (PEO) …
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Simulated solar light assisted photocatalytic degradation of organic matters
… the degradation and mineralization by nanosized semiconductors or sodium hyperchlorite (NaClO) under the irradiation of UV-Vis from the solar simulators. Acid red 14, a type of azo dye containing sulfonic groups and being commonly used as a textile dye, was chosen as a target compound, …
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Synthesis, characterization, and application of magnetic gold nanoclusters
… their combined optical and magnetic properties. Nanosized Fe3O4 particles are superparamagnetic and can also be coated with a layer of Au, which supports localized plasmon resonances for useful optical properties. The dual properties of Au–Fe3O 4 nanoparticles have inspired chemists to design a …
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Integrated nanoscaled detectors of biochemical species
… usage. This work focuses on the integration of nanosized electronic structures for high-specific sensing applications into adequate microfluidic structures for sample delivery and liquid manipulation. Based on the conjunction of these two technologies, two novel sensor platforms were prototyped, …
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Serum Stable Carbohydrate-Oligoethyleneamine Copolymers for Nucleic Acid Delivery
… vehicles are required to compact them into nanosized particles, offer protection from degradation in vivo, and release the therapeutic cargo at the desired location. Polycationic vehicles are good candidates for these purposes since they can be chemically modified to tune the desired …
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NANOCOMPOSITES CONTAINING GOLD NANORODS FOR TWO-PHOTON IMAGING, PHOTODYNAMIC THERAPY AND DRUG DELIVERY
Nanocomposites, in which two or more different nanosized entities arranged in a controlled manner, have been widely investigated in recent years. This nanocomposite combines the properties and advantages of each component, exhibiting multifunctionality or novel properties that are not found in …
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Mesoporous silica encapsulated metal nanoparticles in catalysis
<p>Nanosized particles can demonstrate dramatic performance in comparison to bulk materials in heterogeneous catalysis, due to their high density of under coordinate sites associated with altered electronic properties. The structural and compositional design of bimetallic nanoparticles can further …
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Development of magnetic tunnel junction (MTJ) sensors for the detection of single magnetic particles
… In these biosensors, magnetic microsized and nanosized particles have been used as markers of biomolecules. The concept of combining magnetic particles with the sensitivity of magnetoresistive transducers was developed initially by Baselt et al. from the Naval Research Laboratory in Washington …
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Modeling the thermoelectric properties of bulk and nanocomposite thermoelectric materials
… nanocomposites, which are materials with either nanosized grains or particles on the nanometer scale embedded in a host material. Nanocomposites present many challenges in modeling due to their random nature and unknown grain boundary scattering mechanisms. In this thesis we introduce new models …
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