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 85 for “"NTA"”.
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Chemically Induced Phytoextraction of Lead (Pb) Contaminated Soil by Switchgrass (Panicum virgatum L.), assisted with BAP and NTA applications
… growing global concern. Phytoextraction of Pb-contaminated soil can be enhanced by soil chelation to increase the bioavailability of Pb. In the initial study nitrilotriacetic acid (NTA) 5mM, the alkylpolyglucoside (APG) Triton X-100 (2%), and nano-silica were applied to switchgrass (Panicum …
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Chemically Induced Phytoextraction of Lead (Pb) Contaminated Soil by Switchgrass (Panicum virgatum L.)
<p>Soils contaminated with lead (Pb) from human activities including industrial byproducts create an environmental and human health risk. Phytoextraction through chemical acquisition of Pb in soils offer a potentially cost effective and ecologically driven approach to remediation. Switchgrass …
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An investigation into the disbursement processes of the vocational education training levy in Namibia
… (VET) levy by the Namibia Training Authority (NTA), to determine challenges faced by the NTA in administering the VET levy, and to propose a framework for the collection and reimbursement or redistribution of the fund. The study was based on a sample of sixty respondents. Only fifty-four took …
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Aqueous and solid phase interactions of radionuclides with organic complexing agents
… the geochemistry and speciation of major contaminant radionuclides is crucial in order to understand their behaviour and migration in complex environmental systems. Organic complexing agents used in nuclear decontamination have been found to enhance migration of radionuclides at contaminated …
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Herstellung von Biochips basierend auf selbstaggregierender Monolagen
… Nanosiebe oder durch Anbindung von multivalenten NTA-Derivaten an die chemisch funktionalisierte SAM mit NTA / His-tag Wechselwirkung Biochips realisieren. Diese NTA-Chelator Proteinbiochips erlauben eine spezifische, hochaffine, umkehrbare und langfristige Immobilisierung His-markierter Proteine. …
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Synthesis and Cytotoxicity Studies of Gold Nanoparticle Systems
… hydroxyl, biotin and nitrilotriacetic acid (NTA) were introduced resulting in stable, biocompatible gold MPCs, templates for biomolecular functionalisation reactions. Biomolecular functionalisation strategies such as carbodiimide coupling, biotin-avidin interaction and Ni-NTA-histidine …
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South Africa's generational economy
… quantified by the National Transfer Accounts (NTA) methodology, providing a view of the so-called generational economy and allowing us to see how different age groups produce, consume, share, and save resources at a given point in time. NTAs are constructed from a variety of data …
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Evaluation of small extracellular vesicular microRNAs as biomarkersfor exposure of nicotine and E-liquids on human lung cells
Nicotine intake and E-Cigarette or vaping product use-associated lung injury (EVALI) can cause pulmonary disease with damaging health effects. In this study, we explored miRNAs from small extracellular vesicles (sEVs) for nicotine and E-liquid-associated biomarkers. We investigated miRNAs using NGS …
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Effects of soil moisture and al-nitrilotriacetate on yeild chemical composition and digestibility of ryegrass (Lolium multiflorum, L.) by meadow voles
… of flooding and Al-nitrilo-triacetate (Al-NTA) on growth, chemical composition and digestibility of annual ryegrass (Lolium multiflorum, L.). Ryegrass was grown in a greenhouse experiment on Bucks silt loam soil with two soil moisture levels (flooding and 80% field capacity) and two Al …
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Grenzflächen-kontrollierte Mineralisation von Calciumphosphat
… durchgeführt. Dazu wurden Nitrilotriessigsäure (NTA) und Ethylendiamintetraessigsäure (EDTA) als Mineralisationsadditive verwendet, da NTA unter anderem der Struktur der hydrophilen Kopfgruppe des A-CHOLs ähnelt. Es konnte gezeigt werden, dass ein Vergleich der Mineralisation an der Grenzfläche …
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Isolation und Charakterisierung extrazellulärer Vesikel aus humanen CD8+- und γδ-T-Lymphozyten
… und mit verschiedenen Verfahren charakterisiert (NTA, Western Blot, Durchflusszytometrie, Massenspektrometrie). Zudem wurde der Einfluss einer kurzzeitigen Stimulation auf die EV-Freisetzung untersucht und die induzierte Vesikel-Produktion mit nicht stimulierten Kontrollgruppen nach zwei und 72 …
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Development of a converter for grid-tied and isolated operation of an interior permanent magnet synchronous generator, coupled to a twin-shaft gas turbine
… for an IPM. Ninety-degree torque angle (NTA) control, maximum torque per ampere (MTPA) control and unity power factor (UPF) control are compared for performance. The UPF and MTPA control result in the lowest and second lowest DC-link utilisation respectively when compared to NTA control. …
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Synthesis and performance of novel supramolecular tools for single-particle cryogenic electron microscopy and drug and gene delivery
… structure elucidation is fundamentally important to structure-based drug design and basic research into complex biochemical processes. Cryo-EM is an emerging alternative to XRD and NMR that is complementary in many ways relative to XRD and NMR. Materials approaches to cryo-EM are …
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Synthesis and Applications of Polysaccharide-Based Materials Using N-Thiocarboxyanhydrides and Polypeptides
… (NCAs) or N-thiocarboxyanhydrides (NTAs) to form homopolymers or random copolymers when using two different NCA/NTA monomers simultaneously. Chapter 1 begins with a background on polysaccharide and polypeptide-based materials with a focus on polysaccharide-block-polypeptide block …
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Investigations into Protein-Surface Interactions via Atomic Force Microscopy and Surface Plasmon Resonance
… (AFM) to determine conformation. Complementary studies were performed via surface plasmon resonance (SPR) to investigate the dynamics of this adsorption process on gold, and an amine-, carboxyl-, methyl- and hydroxyl-terminated SAM films. Chapter 4 provides background and investigation …
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Crystal engineering of 2-periodic Ni- and Co-based, isoreticular, mixed ligand metal-organic frameworks for sorption studies
… and Co isoreticular MOFs, of the formulae [Ni(2-nta)(bpe)(H2O)2]n·2(DMA)n (1), [Ni(2-bta)(bpe)(H2O)2]n·2(DMF)n (2), [Co(2-nta)(bpe)(H2O)2]n·2(DMA)n (3) and [Co(2-ata)(bpe)(H2O)2]n·3(DMA)n·(H2O)n (4). These were synthesized from 1,2-bis(4-pyridyl) ethane and terephthalate ligands …
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Synthesis of Small Molecule and Polymeric Systems for the Controlled Release of Sulfur Signaling Molecules
… has increased, the role(s) of other sulfur-containing molecules as potential players in cellular signaling and redox homeostasis has begun to emerge. This creates new and exciting challenges for chemists to synthesize compounds that release a signaling compound in response to specific, …
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Novel recombinant protein constructs for improved insulin-like growth factor-1 delivery
… in bacteria for higher production efficiency. Ni-NTA purified protein was detected in three of the four constructs. These proteins may ultimately be useful for myocardial delivery of IGF-1 to facilitate cardiac repair.
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Molecular recognition using nanotube-adsorbed polymer complexes
… in estimation is less than 5% under our experimental conditions, allowing for calibration using a series of NO concentrations. As expected, the adsorption rate is found to be linearly proportional to NO concentration, and the intrinsic single-SWCNT-site NO adsorption rate constant is 0.001 s-¹ …
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Chemically Specific Protein Immobilization Strategies on Analytical Surfaces
… process. Using nitrilotriacetic acid (NTA) linkers and polyhistidine-tagged proteins, several synthetic strategies for presenting these linkers to the surface are illustrated. Gold was used as a primary surface. Data was also obtained for other potentially useful surfaces, including …
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