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 20 for “"clay-based"”.
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Nanoindentation characterization of clay minerals and clay-based hybrid bio-geomaterials
… exploration. Recently, growing prospects of clay based nanocomposites have renewed further interest in understanding the fundamental elastic and plastic properties of hydrous aluminosilicates. Their distinct, nanoscale layered crystal structure is known to result in anisotropic responses to …
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Removal of cationic and anionic dyes from aqueous solution using a clay-based nanocomposite.
… wastewater by calcined magnesite, halloysite nanoclay and calcined magnesite - halloysite nanoclay composite was evaluated. To this end, the study was subdivided to four segments. The first segment of the study focused on evaluating the efficiency of using calcined magnesite to remove Methylene …
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The Space of Clay: an investigation of contemporary clay-based art practice as a site of embodied viewer experience
This thesis interrogates the potential for clay and ceramic artworks to stimulate embodied perception. Numerous studies have examined the phenomenology of art experience, taking account of various forms of practice. Embodied maker experiences of working with clay have also been well documented, yet …
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Lerbaserad erfarenhet och språklighet
… As a ceramist expressing myself through clay, form has never been empty, and clay never a hindrance, and my dissertation is an attempt to put materiality as hindrance, and immateriality as freedom, in context, as well as to reflect upon questions related to their emergence and what impact …
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Increasing productivity in graduate students fulfilling thesis requirements via tactile art
… on thesis related work following a tactile-based art intervention. The student researcher utilized a clay-based Acceptance and Commitment Therapy (ACT) art intervention on graduate and doctoral students to study its effectiveness on reducing procrastination and stress on thesis related …
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Exploring the possibility of low temperature glazing in faience from the Djoser Step Pyramid through compositional analysis
Egyptian faience, a glazed, non-clay based ceramic material, is found throughout Egypt in a time range pre-dating the Predynastic Period (5500 - 3100 BCE) and extending well beyond the Roman Period (30 BCE - 641 CE). One of the most monumental feats of faience production and one of the first …
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A study on thermal conductivity of six unexplored Nigerian clays for possible refractory and insulating materials
Refractories are mineral and chemical based materials, with high heat resistance properties. Refractory manufacturing typically uses clay as the main raw material. The study aims to investigate six unexplored Nigerian clay based on the suitability of their chemical, physical, mechanical and thermal …
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Additive manufacturing of non plastic porcelain material by direct writing and freeze casting.
… ceramics. Specifically the method used is based on the Additive Manufacturing extrusion process using direct writing of high solid loading ceramic pastes and then freeze-casting to solidify the deposited material. This novel fabrication method, for which a patent has been granted, has been …
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Adhesion of silver nanoparticle amendments to ceramic water filters
… deposition experiments onto Al₂O₃ membranes and clay-based ceramic filters were performed using Ag NPs stabilized by three different agents: citrate, polyvinylpyrrolidone (PVP), and branched polyethylenimine (BPEI). Laboratory and field- scale filtration experiments were also conducted to …
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Broadband Rheological Characterisation of Soft Functional Materials
… In particular, I concentrate on DNA-based and clay-based hydrogels, which exhibit strong degree of swelling when dispersed in an aqueous solvent. These soft transient networks represent intriguing thermoresponsive and time-dependent systems, where the flexibility in the design opens …
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Effects of feeding a fumonsin (FB[subscript 2]) naturally contaminated corn at various levels, with and without 2 adsorbents on the growth performance, blood, and liver chemistry of nursery pigs
… Exp. 2 dietary treatments using 0.5 % carbonized-clay adsorbent (CC) were 1) 0 ppm FB1 corn, 2) 0 ppm FB1 corn + CC, 3) 20 ppm FB1 4) 20 ppm FB1 + CC, 5) 50 ppm FB1, and 6) 50 FB1 + CC. In conclusion, the results of this study reveal that a carbonized-clay adsorbent did not improve nursery pig …
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Accelerated computational modeling of ballistic helmet test protocols
… current combat helmet test protocols use clay to record the helmet backface deformation signature, which is used as an important criterion to measure the helmet effectiveness at preventing head injury. However, according to a recent review of the test protocols by the National Research …
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The Development of Sustainable Lime-Based Building Wall Components
… out to investigate the performance of stabilised clay-based target material. Lower Oxford Clay (LOG) was used as the base clay, with and without combining it in equal proportions (50:50) with Pulverised Fly Ash (PFA) an industrial waste from the burning of coal in power stations. The traditional …
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Cyclic behaviour of monopile foundations for offshore wind turbines in clay
… piles ranging from 4.0 m – 7.5 m in diameter. Based on available borehole records, most planned wind turbines in the UK will be founded in overconsolidated clay deposits. Monopile design is done via usage of the well established p-y curves. However, there are issues with the usage of the p-y …
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The Manufacture of Polymer Nanocomposite Materials Using Supercritical Carbon Dioxide
… as a processing aid to help exfoliate nano-clays and improve their dispersion during melt blending in polymer matrices has been reported in the literature. One of the best processes in terms of improving the degree of nano-clay dispersion and composite mechanical properties was developed in …
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Nanocomposite-based Lignocellulosic Fibers
… method for lignocellulosic fiber. Nanocomposite-based lignocellulosic fibers were successfully fabricated by sequential adsorption of oppositely charged poly(diallydimethylammonium) chloride (PDDA) and clay nanoparticles in a number of repeated deposition cycles. Nanocomposite fibers displayed …
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Food safety through fungal disease and mycotoxin mitigation on dairy farms: From field to feed and the rumen
… field to halt fungus growth, while AD such as clay and yeast work in the rumen to mitigate the negative effects associated with the consumption of mycotoxins on WPCS and other feedstuffs. This research aimed to delve into the consequences of foliar FUN on WPCS and of feeding AD to cows …
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Engineering properties of sulphate-bearing clay soils stabilised with lime-activated ground granulated blast furnace slag (GCBS)
… porosity development of a laboratory prepared clay mix (kaolinite with and without 6% gypsum) and a natural sulphide-bearing clay soil, Lower Oxford Clay. Based on shear, compressive and indirect tensile strength testing, it was found that an increase in the stabiliser slag/lime ratio results …
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Synthesis and potential application of Fe3+/Mn2+ bimetal and hexadecyltrimethylammonium bromide (HDTMA-Br) modified clayey soils for arsenic removal in groundwater
… in Limpopo Province and further synthesize clay based adsorbents for arsenic removal using Fe3+ and Mn2+ oxides and hexadecylammonium bromide (HDTMA-Br) cationic surfactant as modifying agents. The first section of the work presented the hydrogeochemical characteristics of groundwater in the …