91 zoekresultaten voor “nanoparticles” in de Publieke website
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Hot Nanoparticles
Gold nanoparticles show surprisingly strong interactions with light in the visible range, which can be divided into scattering, absorption, and photoluminescence.
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Photothermal circular dichroism studies of single nanoparticles
In this work, we investigate the minute circular dichroism effects of single nanoparticles.To this aim, we apply photothermal imaging with a polarization-modulated heating beam.
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Photo-activation of ruthenium-decorated upconverting nanoparticles
Metal-based prodrugs based on ruthenium(II) polypyridyl complexes have proven to be very suitable for application in both photodynamic therapy (PDT) and photo-activated chemotherapy (PACT).
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Gold nanoparticle-peptide conjugates for biomedical applications
Despite the fact that gold nanoparticles (GNPs) are one of the most studied nanoparticles, there is still a necessity for new approaches allowing for effective protective coating to enable wider use of GNPs in biomedical applications.
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Towards understanding the toxicity of copper nanoparticles in aquatic ecosystems
Promotores: Prof.dr. W.J.G.M. Peijnenburg & Dr. M.G. Vijver
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Towards a mechanistic understanding of nanoparticle behavior using zebrafish
The work described in this dissertation contributes to a better mechanistic understanding of nanoparticles in vivo. To achieve that goal, we used the zebrafish as a highly predictive pre-screening model of nanoparticles.
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Development of an Adverse Outcome Pathway (AOP) for metallic nanoparticles
What is the mechanism of action preceding a physiological effects induced by metallic nanoparticles?
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Nano shapes micro : Impacts of metallic nanoparticles on microbial communities
This thesis aimed to investigate the impact of exposure dynamics, relative contributions of ENPs(particle) and ENPs(ion), and dosing regimens on the toxicity of ENPs varying in different physico-chemical properties, on the composition and functioning of soil microbial communities.
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Fate, accumulation and ecotoxicity of copper nanoparticles under environmentally relevant conditions
Fate and toxicity of copper nanoparticles was related to the water chemistry of the environment and pristine size.
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mRNA and drug delivery with lipid-based nanoparticles
This thesis focuses on the application of lipid-based nanomedicine in drug delivery, including small molecular antitumor drugs and biomacromolecules including mRNA, and evaluates their biological performance.
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Supramolecular peptide amphiphile nanoparticles as a novel allergy vaccine
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Supramolecular peptide amphiphile nanoparticles as a novel allergy vaccine platform
Bet v1, the major allergen in birch pollen, is one of the main causes of allergies such as asthma and rhino-conjunctivitis. It is the main cause of birch pollen allergy in humans.
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Understanding the uptake and internal distribution of metallic nanoparticles in Danio rerio larvae
The aim is to discover where differently shaped metal nanoparticles distributes in Danio rerio, linking the distribution with genomic responses and so come up with a Mode of Action.
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Photothermal studies of single molecules and gold nanoparticles: vapor nanobubbles and conjugated polymers
Promotor: M.A.G.J. Orrit
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Effect of Nanoparticles on Microbial Catabolism and Community Structure using Biolog techniques
1. To what extent do metallic NPs added to soil extractions change the activity, abundance, or community composition of microbes? 2. How do the effects of metallic NPs on soil microbes differ from the effects of the ions shedding from corresponding NPs?
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study of electron transport through networks of interconnected nanoparticles
This thesis describes a study from both a theoreticaL and an experimental point of view.
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Quantifying the toxicity of mixtures of metals and metal-based nanoparticles to higher plants
Promotores: Prof.dr. W.J.G.M. Peijnenburg & Dr. M.G. Vijver
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The structure of a working catalyst: from flat surfaces to nanoparticles
Promotor: Prof.dr. J.W.M. Frenken
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metrics for evaluating dose-response relationships of metal-based nanoparticles to Zebrafish embryos
Promotores: Prof.dr. W.J.G.M. Peijnenburg & Dr. M.G. Vijver
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Mesoporous silica nanoparticle-based protein delivery systems for biomedical applications
Promotor: A. Kros
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In vitro and in vivo delivery of functionalized nanoparticles via coiled-coil interactions
Promotor: A. Kros, Co-promotor: R.R.C.L. Olsthoorn
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charge transport properties and functionality of molecule-nanoparticle ensembles
Promotor: J.M. van Ruitenbeek, Co-Promotor: S.J. van der Molen
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Relationship (QNAR) Models Predicting the Toxicity of Metal-based Nanoparticles to Aquatic Species
Describe and identify what dosimetry parameters are of importance to interpret dose-response relationships (eg., mortality, sub-lethal, growth or reproduction inhabitation, DNA damage and reactive oxygen species, etc. ) for metal-based nanoparticles? How to develop quantitative models that enable to…
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Two-photon luminescence of gold nanorods: applications to single-particle tracking and spectroscopy
Gold nanorods are biocompatible nanoparticles that present an excellent two-photon signal that can be used to get high spatial resolution inside living cells. Gold nanorods are photostable and therefore can be followed inside cells for long time, with possible applications as trackers in live cells.
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Through the magnifying glass
Although nanoparticles are extensively used in various applications like consumer products and have most probably entered the environment, little is known about the effects of these particles on living organisms.
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Qi Yu
Wiskunde en Natuurwetenschappen
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Intradermal delivery of nanoparticulate vaccines using coated and hollow microneedles
In summary, the collective results described in this thesis show that nanoparticulate vaccines can be delivered intradermally by coated and hollow microneedles and evoke antigen-specific immune responses.
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The use of computational toxicology in hazard assessment of engineered nanomaterials
Assessing the risks of engineered nanomaterials (ENMs) solely on the basis of experimental assays is time-consuming, resource intensive, and constrained by ethical considerations (such as the principles of the 3Rs of animal testing). The adoption of computational toxicology in this field is a high p…
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Develop a methodology for assessing the effective dose of nanomaterials for environmental risk assessment purposes
How to make a quantitative assessment of the relative contribution to toxicity of ions and particles? Is the toxicity of nanoparticles related to their size or shape? Which physicochemical property of nanoparticles is an appropriate dose metric of nanoparticles?
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Nanomaterial safety for microbially-colonized hosts: Microbiota-mediated physisorption interactions and particle-specific toxicity
The external tissues of plants and animals are colonized by microbial communities termed microbiota. When organisms are exposed to environmental pollutants, these substances will therefore encounter microbiota at the exposure interface.
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Adjuvanted nanoparticulate seasonal influenza vaccines
Promotor: W. Jiskoot, Co-promotor: A. Kros
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Hot Nanoparticles
Promotie
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Selective and efficient electrochemical CO2 reduction on nanostructured catalysts
Promotor: M.T.M. Koper, Co-Promotor: L.B.F. Juurlink
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CO2 reduction on post-transition metals and their alloys: an industrial approach
This thesis focuses on the synthesis, characterization and performance towards CO2 electroreduction of mono and bi-metallic particles based on p-block metals
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Novel analytical approaches to characterize particles in biopharmaceuticals
Particles are omnipresent in biopharmaceutical products. In protein-based therapeutics such particles are generally associated with impurities, either derived from the drug product itself (e.g. protein aggregates), or from extrinsic contaminations (e.g. cellulose fibers).
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Cathodic corrosion
Cathodic corrosion is a relatively unknown phenomenon that can severely etch metallic electrodes at cathodic (negative) potentials.
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Platinum electrochemistry through a magnifying glass
In most applications, electrocatalysts exhibit a large surface area to volume ratio, for example using nanoparticles.
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Fate, accumulation and impact of metallic nanomaterials in the terrestrial environment
The rapidly increasing commercial application of metallic nanoparticles within products will inevitably enhance the amount of NPs being released into soil.
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The Metallophilic Interaction between Cyclometalated Complexes: Photobiological Applications
In this thesis, the researcher developed a nanosystem based on the metallophilic Interaction between cyclometalated complexes.
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Light and nanoparticles against cancer
Lezing, This Week's Discoveries
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Development of a consistent methodology for assessment of the combined effects of metal-based chemicals to lettuce (Lactuca sativa L.)
Hoe kan de methode om de gecombineerde effecten van metaal-gebaseerde chemische stoffetn te bepalen worden verbeterd?
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Het toegevoegde risico van grootte
Wat zijn de risico's van nanodeeltjes?
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PLGA-based particulate vaccine delivery systems for immunotherapy of cancer
Promotores: W. Jiskoot, F. Ossendorp
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Steps in gas-surface reactions
Heterogeneous catalysis is essential to many industrial applications. These catalysts are often comprised of supported nanoparticles, which contain various different surface sites.
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Photothermal circular dichroism studies of single nanoparticles
Promotie
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Microscopy and Spectroscopy on Model Catalysts in Gas Environments
In surface science there is great effort to move from studying simple, flat model surfaces in vacuum to investigating more complex model catalysts in gas environments (in situ). This thesis gives three examples of such studies using microscopy and spectroscopy.
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Rationally designed peptide based functional biomaterials
Promotor: Prof.dr. J.G.E.M. Fraaije, Co-promotor: A. Kros
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Liposome-based synthetic long peptide vaccines for cancer immunotherapy
Promotores: Wim Jiskoot; Ferry Ossendorp
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Gold nanorod photoluminescence: applications to imaging and temperature sensing
Promotor: M.A.G.J. Orrit
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