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 27 for “"charred"”.
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In-line treatment of metal contaminated storm water by charred microporous polymers
… of dissolved contaminants such as metals. Two charred microporous polymers, Supelcarb(TM) and Carboxen-1011(TM) were measured for adsorption capacity for Cu(2+) and Ni(2+) removal in both batch and flow through experiments. Results indicate Cu(2+) was removed but not Ni(2+). A scenario was …
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Characterization of Shear Strengths and Microstructures for Solid Rocket Motor Insulation Materials
… exhibits the highest shear strength after being charred. Double-notch shear test specimens of three materials, ARI-2718, ARI-2719, and ARI-2750, were charred and tested to measure the failure strength of each charred material. The ARI-2750 showed the highest shear strength when loaded along the …
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Solubility, degradability and utilization by ruminants of broiler litter processed by ensiling, deepstacking and composting
… of broiler litter from surface and charred areas in the deepstacks. The low DM content in charred litter reflected more susceptibility of the locally high moisture litter for charring. Surface litter contained less CP than normal litter. Charred litter had higher undegradable protein …
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An Archaeobotanical Contribution to Foodways, Wood Collecting Strategies, and Niche Construction at the Late and Terminal Archaic Site of Côte Rouge in Southern Québec
… or an increase of plants in the diet. Charred seeds and fruits are documented only for the Terminal Archaic, in the samples dated from 3800 to 3300 BP (4200 and 3500 cal. BP). More frequent visits to Côte Rouge may have enhanced gap phase succession and favored the establishment and …
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The Relationship Between Line and Tone
… construction is an active reconstitution of the charred contours of a dream. This project began with a glass of Scotch, which is a container of a world; dreamlike, smoky, and ethereal. It ended with drawings of a room; a reconstitution of a dream.
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IMPACT OF HEAT TREATMENT AND OXIDATION OF C/C COMPOSITES ON MICROSTRUCTURE AND PHYSICAL PROPERTIES
… argon) of two-directional (2-D) pitch-fiber with charred resin carbon matrix, and three-directional (3-D) PAN-fiber with CVI carbon matrix influenced microstructure, mechanical and thermal properties. Microstructure characterized by polarized light microscopy (PLM), XRD, and Raman spectroscopy …
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A Holistic Approach to Mass Timber Design
… Findings include heritage hardwoods typically charred at a higher rate than the heritage softwoods but the species converged at a rate of 1.05 mm/min when exposed to 50 kW/m². Gender distributions of the survey (16% women, 81.7% men) mirrored industry statistics. It was also found that 71.4% of …
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Excavation and interpretation: 42Ws126, the Watchman Site, Zion National Park, Utah
… use of the site. Radiocarbon dates from charred material, the presence of both early and later ceramic types, and the architectural arrangement and construction methods indicate use during Pueblo I (A.D. 800--1000) and late Pueblo II to early Pueblo III periods (A.D. 1000--1150). A model …
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Kultūrinių augalų kilmė Lietuvoje Rytų Baltijos regiono kontekste (archeobotanikos duomenimis iki XIV a.) /
… were analysed. Research object of this study are charred and waterlogged macroremains of cultivated plants and their imprints in pottery. Radiocarbon (AMS 14C) and optically stimulated luminescence (OSL) dating methods were used to determine the chronology of investigated plants. This study …
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Origin of cultural plants in Lithuania in the context of Eastern Baltic (based on archaeobotanical material dated up to 14th century AD) /
… were analysed. Research object of this study are charred and waterlogged macroremains of cultivated plants and their imprints in pottery. Radiocarbon (AMS 14C) and optically stimulated luminescence (OSL) dating methods were used to determine the chronology of investigated plants. This study …
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Black carbon in marine sediments : quantification and implications for the sorption of polycyclic aromatic hydrocarbons
… showed that nitrogen-containing macromolecules charred during this pretreatment causing a positive bias to the BC measurement. Meanwhile, the oxidation of relatively small BC particles underestimated the total BC content in non-charring samples. Models based on carbon oxidation were then …
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Post-wildfire black carbon deposition on the snowpack in the Cascade Range, Washington State: Temporal and spatial variability with implications for accelerated melt
… the timing and availability of water resources. Charred trees in post-wildfire forests provide a significant source of BC that is deposited on the snowpack for years following a wildfire, and this effect varies with burn conditions and forest structure. Snow samples were gathered from five sites …
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Development of a One and Two-Dimensional Model for Calculating Pore Pressure in an Ablating Thermal Sacrificial Liner
… material will decompose into a solid material (charred liner) and a vapor (pyrolysis gas). The pyrolysis process leads to the flow of pyrolysis gases throughout the porous charred liner. As a result, significant pressures can build within the liner. If the pressures within the liner are high …
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Nipping the bud hypothesis : a comparison of savannah and forest tree responses to canopy scorch
… canopies are too high above the flames to be charred, leaves are often scorched over the full tree height; hence the focus on differences in tree canopy recovery. I explored two possible mechanisms for differences in crown resprouting following canopy scorch: (1) differences in bud banks and …
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The effects of oak cask previous use, origin and filling strength in the maturation of Scotch Whisky
… 63.5% ABV whilst French oak casks that had been charred reached congener levels equivalent to that of American charred oak casks. This demonstrated the significance of the cask construction process, and this was confirmed by the laboratory toasting experiments.<br/><br/>The organoleptic analyses …
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The effects of the High Park fire on Cache la Poudre drinking water quality
… However, the benchscale tests conducted with charred riverbed sediment indicated that the smoky flavor is removed by conventional and powdered activated treatments. In the second part of this study, nutrients, organics, and metals were shown to leach into the river water in a laboratory …
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Exploring the application of instrumental analysis for the conservation of textiles excavated in Greece
… with copper), and ‘Theva’ (found in a charred state), ‘Kalyvia’<br/>(found impregnated with calcium salts) and ‘Nikaia’ (found in association with copper and in anoxic<br/>conditions). The quality of the results varied according to the type of preservation and the condition<br/>of the …
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Osteogenese nach Laserosteotomie mit einem CO2-Laser im Vergleich zur Osteotomie mit konventioneller Sägetechnik - eine tierexperimentelle Studie
… was most likely due to a surface deposit of charred tissue elements, produced by the thermal effects of the laser. In a third group of laser specimen showed a complete reconstruction of the incision by new Haversian bone and no signs of any damage by thermal effects due to the laser …
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ELEVATED PYROGENIC ORGANIC MATTER IN SEDIMENTS FROM LAKE BOSUMTWI, GHANA AS A PROXY FOR THE TERMINATION OF THE AFRICAN HUMID PERIOD
… to the understanding of aeolian transport of charred biomass between northern and western Africa, providing constraints on the timing and spatial variability of the AHP termination.
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