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 73 for “"Support materials"”.
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Supramolecular Nanostructures as Support Materials for Gold Nanoparticle Catalysts
… metal oxides being the most commonly employed support material for AuNPs. However, metal oxides are challenging to evenly distribute in solution and intrinsically difficult to modify. Molecular self-assembly provides a novel route to synthesize AuNP support materials, offering precise control …
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Emulsion-Templated Porous Polymers as Support Materials for Covalent Enzyme Immobilization
… poly(High Internal Phase Emulsion) (polyHIPE) materials can be used as a biocatalysts, via the covalent immobilization of Candida Antarctica Lipase B (CAL-B). Recently, it has been shown that polyHIPEs can be prepared with epoxy functionality, which show potential for the covalent …
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Hands-On Support Materials for Schoolwide Science Project in Middle Schools
<p>The establishment of a Chapter 1 Schoolwide Project middle school created a need to develop a hands-on science program for middle school students with academic deficiencies. This program considered the following criteria: (a) academic needs of adolescent learners, (b) validation of hands-on …
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Perovskites as New Support Materials for the Iron Based Fischer-Tropsch Synthesis
… are synthesized from the basic starting materials hydrogen and carbon monoxide, derived from sources such as coal, gas or biomass [1]. Iron catalysts and cobalt based systems are the preferred catalysts for the commercial Fischer-Tropsch synthesis (FTS) employed at PetroSA and Sasol in …
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SiC and B₄C as electrocatalyst support materials for low temperature fuel cells
Supported nano-catalyst technologies are key for increasing the catalyst utilisation and achieving economically feasible platinum metal loadings in hydrogen polymer electrolyte fuel cells (PEFCs). High surface area carbons are commonly utilised as support materials for platinum due to low cost, …
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Preparation and characterisation of inorganic nanostructured support materials for polymer electrolyte fuel cells
… high costs associated with the current carbon supported platinum (Pt/C) catalysts. Carbon support corrosion and Pt dissolution/aggregation on the catalyst layer within the fuel cell have been confirmed as the major contributors to the degradation of the Pt/C (Shao, et al., 2007). Attention …
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Promoting Teaching as Design in Elementary Mathematics: Exploring the Potential of Curriculum Support Materials
… study explored the potential of Curriculum Support Materials for promoting teaching as design. Conducted over a four-month period, the study traced the design, development, and pilot testing of a web site intended to serve as a professional development resource for teachers. The purpose of …
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Evaluation of metal nitrides and borides as alternative electrocatalyst support materials for polymer electrolyte fuel cells
… Poor durability is mainly attributed to carbon support corrosion during start-up and shut-down of the fuel cell. Corrosion of the electrocatalyst support materials has numerous adverse effects on the performance of the fuel cell, such as weakening of metal-support interaction which results in Pt …
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Developing open source tools and support materials to measure geographical accessibility to screening and cancer support services
Computing software tools such as Geographical Information Systems (GIS) have advanced the ability to measure accessibility to healthcare facilities. There are multiple methods which have been proposed in academic institutions but are often not applied in practice. The aim of this PhD is to create …
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Investigating the opportunities and challenges for professional growth created through a process of developing learning support materials
… International Cooperation Agency (JICA), have supported the CIs and CLs by participating in the development and distribution of learning support materials in the form of study guides for use by the teachers in the cluster meetings as well as in the science classrooms. As the CIs and CLs are …
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Facile Synthesis of High Surface Area Molybdenum Carbide and Nitride: An Application in Support Materials for Oxygen Reduction Reaction
… in situ method to obtain highly dispersed PtMoz supported on α- MoC(1-x), to explore the suitability of such materials as catalysts for oxygen reduction reaction (ORR) in a proton exchange membrane fuel cell (PEMFC). Mg2(Mo3O8) and Zn2(Mo3O8), alternative tetravalent Mo intermediates to MoO2, …
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Investigating the feasibility of creating a suite of dedicated attitude-themed support materials for coaches based on the tripartite component model
… of creating a suite of dedicated attitude-themed support materials for coaches based on the tripartite component model. Through personal observation of supervising, supporting and delivering qualifications to coaches over more than 10 years I had repeatedly noticed that coaching conversations were …
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Teachers' use of teaching and learning support materials for effective teaching of grade 11 chemistry and physics in Kavango East region, Namibia
… teachers’ use of Teaching and Learning Support Materials (TLSMs) for effective teaching of Grade 11 Chemistry and Physics in the Kavango East Region, Namibia. Four research questions were generated to guide the collection of data. The study adopted the sequential mixed methods research …
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The synthesis and chemistry of new carbosilane dendrimers and their use in polymerisation catalysis
… Recently, dendrimers have also been used as support materials. In this thesis, an investigation towards the immobilisation of homogeneous polymerisation catalysts on dendrimers is described.
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A Study on Supported Metal Catalysts Prepared from Colloidal Precursors
When metal nanoparticles are supported on the surface of an inert carrier, the resulting materials can become powerful heterogeneous catalysts capable of accelerating a diverse range of chemical reactions. Though there are a wide variety of synthetic routes by which these materials can be prepared, …
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Embattled
… manipulation of traditional and nontraditional support materials such as canvas or pegboard. Creative influences from twentieth-century European and American art history are also explored, especially Abstract Expressionist painting and Surrealist "automatic" drawing.
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Sonovoltammetric detection of cadmium (II) at mercury thin film electrodes
… and glassy carbon electrodes were examined as support materials for the mercury film and the results were compared to a dialysis membrane-covered glassy carbon MFE. The platinum electrode behaved in an unusual manner and appeared to be greatly affected by the ultrasound. The glassy carbon MFE …
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