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 79 for “"AuNPs"”.
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Evaluation of the effects of gold nanoparticles (AuNPs) on protein folding in Escherichia coli
… physicochemical properties possessed by the AuNPs. More studies continue to be carried out on AuNPs as the uses of these nanometer-sized particles are limitless. Water soluble citrate capped gold nanoparticles were synthesized through a slightly modified citrate method. In order to determine …
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Optimization of Gold Nanoparticles for Radiotherapy
… use is gold, in the form of gold nanoparticles (AuNPs) because of its biocompatibility and amenability to surface modification. For example, surface modification of AuNPs with simple sugars can improve their solubility and cellular uptake. Furthermore, positively charged AuNPs are thought to have …
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Genotoxic effects of a novel form of Gold Nanoparticles loaded with Hesperidin on head and neck cancer lymphocytes compared to effects from healthy control lymphocytes and Squamous cell Carcinoma of Maxillary sinus
… and applications of gold nanoparticles (AuNPs) conjugated with hesperidin (Hsp) as a targeted drug delivery system. AuNPs are ideal for loading different drugs and delivering them to targets sites due to their stability, small size, substantial surface area, non-cytotoxic and inert …
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Genotoxic effects of a novel form of Gold Nanoparticles loaded with Hesperidin on head and neck cancer lymphocytes compared to effects from healthy control lymphocytes and Squamous cell Carcinoma of Maxillary sinus
… and applications of gold nanoparticles (AuNPs) conjugated with hesperidin (Hsp) as a targeted drug delivery system. AuNPs are ideal for loading different drugs and delivering them to targets sites due to their stability, small size, substantial surface area, non-cytotoxic and inert …
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Lanthanide Functionalised gold nanoparticles as MRI contrast agents
… contrast agents (i.e. Gd-DTPA). The Gd-loaded AuNPs showed only a moderate increase in their relaxivity as compared to the Gd-DTPA complex. The factors limiting the relaxivity of Gd-loaded AuNPs were explored using EPR spectroscopy. For EPR measurements, Gd3+ was replaced with vanadyl (VO2+) …
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Enhanced Delivery of Gold Nanoparticles with Therapeutic Potential for Targeting Human Brain Tumors
… therapeutics. In particular, gold nanoparticles (AuNPs) have gained prominence in several targeting applications involving systemic cancers. Their enhanced permeation and retention within permissive tumor microvasculature provide a selective advantage for targeting. Malignant brain tumors also …
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Gold nanoparticle cellular uptake and its implications for cancer therapy
… to probe the uptake of gold nanoparticles (AuNPs) in cancer cells. <br/><br/>In the first study a technique is developed to probe the temporal dynamics of AuNP uptake by performing multiphoton fluorescence-lifetime imaging microscopy (MP-FLIM) on live cells. Using this technique and …
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Solid and hollow gold nanoparticles as radiosensitisers in combination with x-ray radiation and targeted radiopharmaceuticals
… superior physical properties, compared to solid AuNPs. The aims of this study were to investigate the radiosensitising potential of solid AuNPs and HGNs in combination with kV external beam radiation (XBR) and high kV β and γ radiation from ¹³¹I, from [¹³¹I]-MIBG. The study then aimed to …
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A Monte Carlo-based Model Of Gold Nanoparticle Radiosensitization
… with unique and attractive properties. AuNPs enhance local photon interactions, thereby converting photons into localized damaging electrons. Experimental reports of AuNP radiosensitization reveal this enhancement effect to be highly sensitive to irradiation source energy, cell line, and …
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Green synthesis and characterization of gold nanoparticles from capparis sepiaria-tabernaemontana elegans cocktail and investigation of their biological effects in vitro.
… for therapeutic agents. gold nanoparticles (aunps) have more consideration due to their stability, oxidation resistance, electrical and optical properties. this study reports on the green synthesis and characterization of aunps synthesized using an aqueous extract of capparis …
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Supramolecular Nanostructures as Support Materials for Gold Nanoparticle Catalysts
… high catalytic activity of gold nanoparticles (AuNPs) has led to their use in a variety of industrially-relevant reactions, such as low-temperature CO-oxidation and selective alcohol oxidation. Most current research focuses on heterogenous gold catalysis, with metal oxides being the most …
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Gold Nanomaterial–Biomolecule Interactions: Influence of Size, Gold Nanomaterial–Biomolecule Interactions: Influence of Size, Surface Chemistry, and Environment Surface Chemistry, and Environment
… time on the behavior of gold nanoparticles (AuNPs) in biologically relevant settings. Citrate-coated spherical AuNPs ranging from 5 to 60 nm were purchased and studied across three complementary projects. First, time-of-flight secondary ion mass spectrometry (ToF-SIMS) was employed to explain …
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Smart hybrid materials with tailored functions
… sich mit der Verteilung von Gold-Nanopartikeln (AuNPs) in stimuli-sensitiven Polymerbürsten, die an planare Oberflächen gebunden sind. Die Farbänderung solcher Bürsten/AuNP Hybride hängt von der Partikelbeladung und deren Abstand zueinander ab. Folglich, eine Kontrolle der Partikelverteilung in …
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DNA origami substrates as a versatile tool for surface-enhanced Raman scattering (SERS)
… substrates provides both, the arrangement of AuNPs with nm precision as well as the ability to bind analyte molecules at predefined positions. Consequently, the present cumulative doctoral thesis aims at the development of a novel SERS substrate based on a DNA origami template. To this end, …
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Synthesis and Characterisation of Metallic Nanoparticles from Medicinal Plant Extracts and their Application in combating Antibiotic-Resistant Bacterial Pathogens
… and characterise silver (SA-AgNPs) and gold (SAAuNPs) nanoparticles from S. africana extracts. Methods of characterisation included Ultraviolet-Visible spectrophotometry (UV-Vis), X-ray diffraction (XRD), Dynamic light scattering (DLS), Transmission electron microscopy (TEM), Fourier-transform …
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Design of Cotton Fabric-Based Binary and Ternary Composite Materials Containing Nanostructured ZnO, TiO2, and Plasmonic Nanoparticles: Photocatalytic Applications
… on cotton fabric (CF) namely CF@TiO<sub>2</sub>-AuNPs, and CF@ZnONRs-TiO<sub>2</sub>-AuNPs. In these composite materials, the nanostructured TiO<sub>2</sub> and ZnO nanorods (ZnO-NRs) are deposited on CF by following <em>in-situ</em> method. Gold nanoparticles (AuNPs) are incorporated on the …
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Koloidinių tirpalų sudarytų iš polimerinių ir metalinių nanodalelių tyrimai /
… nanoparticles (AgNPs) and gold nanoparticles (AuNPs) possess unique optical properties and are among the most investigated metallic nanoparticles. The aim of this study was to investigate chemically and enzymatically synthetized or biocatalytically enlarged polymeric and metallic nanoparticles …
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Nitroxides in Mechanistic Studies: Ageing of Gold Nanoparticles and Nitroxide Transformation in Acids
… investigation of ageing of gold nanoparticles (AuNPs) and its mechanistic implications. By utilizing a customized bisnitroxide disulfide, ligand place-exchange reactions of AuNPs were studied by Electron Paramagnetic Resonance (EPR) Spectroscopy and a nitroxide spin label was introduced onto the …
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The application of nanomaterials in electrochemical sensors and biosensors
… approach was then attempted by means of AuNPs as multi-enzyme carriers. Charactensahon of the enzyme-NP conjugates was also performed by spectrophotometzlc and electrochemical analyses. AuNPs were also used to develop a multi-detection lmmunoassay system A sandwch-type platform was …
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Evaluation of the antimicrobial properties and biocompatibility of polypropylene mesh conjugated with gold nanoparticles
… are a concern. Conjugating gold nanoparticles (AuNPs) to PP mesh may enhance biocompatibility while reducing infection rates. In this study we investigated the size and concentration of gold nanoparticles attached to polypropylene hernia mesh to determine the effects on biocompatibility. The …
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