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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 28 for “"titanium dioxide nanoparticles"”.
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Quantification of titanium dioxide nanoparticles in environmental matricies.
… (H₂SO₄) digestion and ICP-MS quantification for titanium dioxide (TiO₂) was validated for 4 environmentally relevant matrices. The method provided Ti recoveries of 97 ± 2.5%, 91 ± 4.0%, 94 ± 1.8%, and 73 ± 2.6% (mean ± standard deviation) from water, fish tissue, periphyton, and sediment, …
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Development of titanium dioxide nanoparticles/nanosolution for photocatalytic activity
… ways to overcome this problem is by using titanium dioxide (TiO2). TiO2 is a well-known photocatalyst that widely used for environmental clean-up due to its ability to decompose organic pollutant and kill bacteria. Although it is proven TiO2 has an advantage to solve this concern, its …
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THE BIO-MOLECULAR ANALYSIS OF TITANIUM DIOXIDE NANOPARTICLES EXPOSURE ON CARDIOMYOCYTES
… has raised the need to address the safety of nanoparticles (NPs) on humans. However, the increasing large number of NPs required for testing has led to the need for new alternative testing strategies via computational means to replace the costly and laborious animal testing. Yet, such testing …
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Theoretical Study of Electron Transport and Trapping in Solvated Titanium Dioxide Nanoparticles
… transport and trapping in solvated TiO_2 nanoparticles. In first half, We implemented an OpenMP/MPI hybrid parallelization implementation of the pseudospectral algorithm, developed a fragment based initial guess methodology which is suitable for addressing systems with significant …
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Studies of Titanium Dioxide Nanoparticles and Surfactants Effects, Singly and in Combinations, on Luminescence Intensity of Some Aromatic Compounds.
… TX-100 singly or together with TiO<sub>2</sub> nanoparticles to evaluate their individual and combined effects on some fluorescent aromatic compounds such as pyrene, fluoranthene, anthracene, phenanthrene, and carbazole. Rutile phase TiO<sub>2</sub> was synthesized using the low temperature …
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A Study of the Effects of Titanium Dioxide Nanoparticles on the Fluorescent Intensity of Fluorescent Compounds in the Presence of Known Quenchers.
<p>Titanium Dioxide is a naturally occurring oxide of titanium. It has a wide range of uses in commercial products for providing whiteness and opacity. It has photocatalytic properties and can also be used to produce electricity in its nanoparticles form. This research is focused on investigating …
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Interactions between titanium dioxide nanoparticle exposure and grazing organisms on periphyton biomass and community composition.
Titanium dioxide nanoparticles (TiO₂NPs) are important contaminants of emerging concern, due to their ubiquity and use in such a broad range of consumer products. Freshwater ecosystems represent the most important aquatic reservoir for TiO₂NPs. Outdoor stream mesocosm and indoor stream microcosm …
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Partially-Fluorinated Polyimides using Aliphatic Diamines
… issue was addressed by the incorporation of titanium dioxide nanoparticles. Two series of partially-fhiorinated polyimides made using aliphatic diamines as the flexible component and titaniumdioxide nanoparticles were synthesized. All of the reactions were performed via condensation …
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Nanoparticles from microalgae for environmental and biomedical applications
… multifaceted applications of microalgae-derived nanoparticles, particularly focusing on their potential in biomedical, environmental, and catalytic fields. The study highlights the synthesis of silver nanoparticles, titanium dioxide nanoparticles, cobalt (II) hydroxide nanomaterials, and cobalt …
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Infrared Spectroscopic Measurement of Titanium Dioxide Nanoparticle Shallow Trap State Energies
… between the valence and conduction bands of titanium dioxide, crystal lattice irregularities lead to the formation of electron trapping sites. These sites are known as shallow trap states, where "shallow" refers to the close energy proximity of those features to the bottom of the …
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Differential Autophagic Responses to Nano-Sized Materials
… as gene delivery vectors, and engineered titanium dioxide and zinc oxide nanoparticles, which are used in a variety of consumer products. I investigated a comprehensive set of makers of the lysosome-autophagy system with the ultimate goal of elucidating the specific nature of the …
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Functionalized multilayer thin films for protection against acutely toxic agents
… hydrogen bonded films, dendritic compounds and nanoparticles, broadening its range of future applications. This platform technology is then applied to generate three novel electrostatically assembled coatings for protection against a range of acutely toxic chemicals, including several chemical …
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In vitro chemically-induced DNA damage in cancer patients and healthy individuals. The effect of genotoxic compounds in cells from polyposis coli, colon cancer patients and healthy individuals.
… The food mutagens, PhIP and IQ, as well as titanium dioxide nanoparticles (TiO2 NPs) induced a dose dependent increase in the DNA damage and chromosomal abnormalities in all tested groups regardless of confounding factors. Prior to experiments physicochemical characterisation of …
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Identification, Characterization, and Abiotic Stress Analysis of microRNAs in Nicotiana tabacum
… of tobacco miRNAs were significantly affected by Titanium Dioxide nanoparticles, salt, and drought stresses, in a dosage-dependent manner. Some miRNAs, for example miR395, exhibited a change in expression of one thousand fold after exposure to stress conditions. Abiotic stresses also affected the …
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Development and Evaluation of Photocatalytic Linear Engineered Titanium Dioxide Nanomaterials for the Removal of Disinfection Byproduct Precursors from Drinking Water
… or toxic than their parent compounds. A suite of titanium dioxide-based linear engineered nanomaterials (LENs) was synthesized and compared to standard commercial titanium dioxide nanoparticles in terms of filterability, settleability, surface characteristics, crystal phase structure, available …
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Iron-Doped Titanium Dioxide Nanomaterials: Synthesis, Characterization and Photodegradation Catalytic Behavior
Titanium dioxide (TiO2) is a very good material for various photocatalytic industrial applications because of its non-toxicity, high chemical stability, low cost and relatively good photoactivity. However, one of the most serious challenges to its applicability is its wide band gap and because of …
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Gas transport properties of reverse selective nanocomposite materials
… periclase (magnesium oxide) or brookite (titanium oxide) nanoparticles into poly(1-trimethylsilyl-1-propyne) (i.e., a super glassy polymer) and 1,2-polybutadiene (i.e., a rubbery polymer) has been examined. Particle dispersion has been investigated using atomic force microscopy and …
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Toxicological effects of metal oxide nanoparticles in combination with microbial components and inflammatory mediators on intestinal epithelial cells
… factors, more specifically metal oxide nanoparticles found in the environment and food products, on the maintenance of the intestinal epithelial barrier. Furthermore, there are no studies investigating the impact of metal oxide nanoparticles in combination with microbial components or …
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