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 19 of 19 for “"continuous synthesis"”.
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Continuous synthesis of iron and aluminium-based nanoparticles
… and temperature. This thesis employs continuous flow processes as an alternative to standard batch processes to address the challenge raised by nanomaterial synthesis scale-up. Continuous processes are more reproducible because they provide accurate control over fluid dynamics, heat …
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Design of Flow Reactors for the Continuous Synthesis of Nanoparticles
… nanocrystals with controlled sizes in a continuous manner, combining kinetics study and reaction engineering approaches as well as computational fluid dynamics (CFD). Firstly, the mechanism of the Turkevich protocol, the recommended method for the synthesis of Au NPs by the National …
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Continuous synthesis of metal halide perovskite nanoparticles with sharp and stable emission
… However, the lack of deep understanding of the synthesis reaction hinders further development of the quasi-2D metal halide perovskite nanoplatelets. The lack of size control and thickness tuning impedes the colour-pure and tuneable emission obtainable from monodisperse metal halide perovskite …
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Continuous synthesis of metallic and oxidic palladium nanoparticles with tunable sizes for catalytic applications
… activity, respectively. In this study, the continuous synthesis of palladium and palladium oxide nanoparticles for their use in three-way catalysts for air pollution remediation is presented. Coiled flow inverter microreactors are used to obtain PdO and Pd nanoparticles of various sizes and …
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Development of a continuous-flow synthesis of neostigmine methylsulfate and studies toward a continuous-flow synthesis of lisinopril
… Herein, we describe the development of a continuous flow synthesis of neostigmine methyl sulfate, an acetylcholinesterase inhibitor on the WHO list of essential medicines, and the transfer of the synthesis into a next-generation reconfigurable frame developed by our collaborators. Starting …
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Ruthenium and Cobalt Catalysts for Hydrogen Production from Ammonia
… This thesis presents a new method for the synthesis of catalysts with precise nanoparticle sizes to unlock fundamental reaction knowledge, redefining the way we design and optimise heterogeneous catalysts. Ruthenium nanoparticles (Ru NPs) are synthesised in the absence of capping ligands in …
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Análise teórico-experimental de microrreatores para síntese de biodiesel com recuperação de calor rejeitado
The present work deals with the analysis of the continuous synthesis of biodiesel in microreactors using the rejected heat of a thermal source and has as objective to obtain the maximum efficiency of the biodiesel production using multiple microreactors, aiming at the scheduling of the production, …
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Continuous production of two archetypal metal-organic frameworks using conventional and microwave heating
… MOFs to investigate, with the aim of producing continuous synthesis routes for these MOFs. We selected two MOFs with well documented syntheses in the literature in order to allow us to quickly ascertain the relative performance of our materials and optimise these. We also explore the …
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Novel Counterflow Reactor for Continuous Templated Synthesis of Semiconductor Nanocrystals
… these nanocrystals requires the advancement of synthesis techniques that are scalable, as well as being both economical and environmentally friendly; simultaneously allowing for the control of the nanocrystals such as size, shape, and size distribution. The typical technique is the hot injection …
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Vitellogenesis in <i>Hyalomma dromedarii</i> (Acari: Ixodidae): A Model for Analysis of Endocrine Regulation in Ixodid Ticks
… tissue protein.</p> <p>Tissue specific synthesis of vitellogenin and vitellin was monitored <em>in vitro</em>. Continuous synthesis of vitellogenin was demonstrated with replete fat body tissue over an eight day culture period. Other tissues, including ovary, midgut, muscle and salivary …
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Integrated continuous-flow chemistry enabled by multistage separations
Flow chemistry is becoming an accepted method of continuous synthesis with its considerable advantages over batch chemistry, such as smaller infrastructure, faster production, and safer operation for aggressive reactions or extreme conditions. However, to realize the full benefits of flow chemistry …
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Control tools for flow chemistry processing and their application to the synthesis of bromodomain inhibitors
Flow chemistry and continuous processing techniques are now frequently used in synthetic laboratories, taking advantage of the ability to contain reactive or hazardous intermediates and to perform moderate scale-up processes for important compounds. However, only a limited number of methods and …
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Flow Chemistry Guided by Computer-Aided Synthesis Planning
… practitioners outside the core field of organic synthesis to fully leverage these advances, in part due to lack of experience in planning and executing synthetic sequences as well as often times incomplete communication of procedural information known only to expert practitioners. New tactics for …
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DEVELOPMENT OF SUSTAINABLE AND EFFICIENT TAILOR-MADE PROCESSES FOR PHARMA AND FOOD APPLICATIONS
… with a low environmental impact (i.e., continuous synthesis, biocatalysis, new solvent systems). The main focus of this project was to display how versatile and tuneable the combination of biocatalysis and flow chemistry could be for the synthesis of different chemical compounds, …
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Engineering genetic isolation in Escherichia coli and developing synthetic genomics tools to efficiently assemble megabase-scale genomes
Chapter 1: Introduction DNA synthesis plays a central role in our ability to manipulate biological systems at various scales. Short synthetic DNA oligos used as primers for polymerase chain reaction (PCR) enable the specific amplification of chosen DNA sequence and synthetic genes are critical for …
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Ultrasound-assisted synthesis and processing of carbon materials
… is an aerosol method suitable for large-scale, continuous synthesis of materials. Ultrasound is used to create aerosol droplets of a precursor solution which serve as micron-sized spherical reactors for materials synthesis. This work presents a precursor system for the template-free USP …
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Study of mechanism of genetic death in Escherichia coli in response to A) dTTP starvation and B) combination of temperature sensitive defects in replication initiation and double strand break repair
… replication of metabolism. Cells first grow by continuous synthesis of RNA, protein and lipids. Once they reach a certain dimension, they duplicate their genomes, which is followed by the division of the mother cell into two daughter cells, capable of repeating this growth – duplication – …
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Synthese von neuartigen Fructoseoligosacchariden mit nativer und immobilisierter Levansucrase aus Zymomonas mobilis
… fructose-oligosaccharides (FOS), which are synthesised from sucrose, have been successfully applied as functional food ingredients, so called “prebiotic oligosaccharides”, in different foods. This soluble fibre are defined as indigestible food components, promoting growth and/or activity of …
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Arc-discharge In Solution: A Novel Synthesis Method For Carbon Nanotubes And In Situ Decoration Of Carbon Nanotubes With Nanoparticles
… to have an in-depth understanding of the synthesis of nanomaterials for the use of state-of-the-art high technological devices with enhanced properties. Recently, the 'bottom-up' approach for the fabrication of nanomaterials has received a great deal of attention for its simplicity and …