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 40 for “"surface materials"”.
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The Effect of Surface Materials and Morphology on Wingsuit Aerodynamics
… study examines the aerodynamic effects of the materials, textiles, and morphologies currently used in wingsuit design and construction. The experiment was a low-speed wind tunnel investigation using a rigid wing with an aspect ratio of 2, a NACA 4418 airfoil cross section and a smooth, polished …
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Moisture Buffering in the Indoor Environment
… ability, through absorption and desorption, of surface materials to attenuate the moisture variations of the indoor air. Moisture buffering plays an important role in understanding the risks for biological growth in surface materials in the indoor environment, e.g., mold growth on walls and …
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Active Measurement of a Micron-Order Gap Under High-Speed and High-Temperature Conditions
… barrier between the harsh environment and surface materials of these flight bodies. The mechanical operation of a portable hypersonic simulation device was developed in-house and tested at Argonne National Laboratories (ANL) to gather in-situ material response of prospective UHTC samples …
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Geochemistry of Reworked Loess and Red Clays in Missouri Caves
… data from cave sediments and presumably related surface materials, loess and "residuum," were combined with new and existing mineralogic analyses to study the character, variability, and origin of the cave sediments. Most samples were collected within 60 miles of Saint Louis County, Missouri. …
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Image-Based Reconstruction and Modeling of Geometry With Complex Reflectance in Non-Diffusive Media
… aims to model small-scale geometry of volumetric surface materials with complex reflectance. Instead of recovering the intricate geometry itself, it uses an appearance-based approach of volumetric texturing, which is a popular technique for rendering rich 3-D detail when a polygonal surface …
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Effects of Surface Roughness on the Indoor Particle Deposition Rate Constant
… of size-classified particles on typical indoor surface materials as affected by the degree of surface roughness. The experiments were conducted in a small-scale acrylic chamber. The particle size range was from 0.723 to 5.048 £gm with 28 size bins. The air change rates were 6, 11 and 13 h-1. The …
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The surface morphology of a small drainage basin in the North Dakota Badlands
<p> To describe the surface morphology of a fourth order drainage basin located in the North Dakota Badland,, the writer made quanti tative application• of known descriptive techniques and morphological laws. </p><p> The surface configuration is a function of the study area's linear, areal, and …
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Application of cepstrum techniques and a guard tube to the measurement of the normal incident sound power absorption coefficient of road surfaces in-situ
… wave sound power absorption coefficient of road surfaces in-situ. Road traffic noise has been identified as the greatest noise pollutant in the industrialised world with the tyre/road interaction being the major source of noise for traffic speeds in excess of 50 km/hr. Open pore bitumen asphalt …
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Interactions between cancer cells and inorganic materials
… in recent years, specifically the role of the surfaces to which the cell is in contact. Many cellular processes, even the survival of the cell itself, have been shown to be dependent on cues taken from the surface and the biological entities (proteins etc.) which can interact with surfaces …
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Theory and Experiments of Scattering From Microscale Random Rough and Deterministic Surfaces
Surface scattering has received considerable attention in the last few decades and is of interest in various engineering disciplines including thermal system design, optical remote sensing and photorealistic image generation. A combined experimental and theoretical investigation has been conducted …
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Smart magnetic affinity adsorbents
As the focus of research on ‘adaptive/responsive’ surfaces has in recent years contributed strongly towards the design of surface materials with ‘intelligent’ or ‘smart’ behaviour, current superparamagnetic adsorbents being employed both in small and large scale operations can be surface modified …
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Lower Kuiseb River sediments and their control on dust emission
… The purpose of this study was to examine the surface materials of the Lower Kuiseb River and establish their potential towards dust production, leading to such plumes. This investigation focused predominantly on the size characteristics of 153 surface sediment samples collected from the Kuiseb …
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Fluids in Planetary Systems
… to the geomorphology of planetary surfaces and the evolution of life, fluids play an integral role in shaping planetary bodies. Fluid properties and processes were investigated under a range of planetary conditions through (1) experimental simulations of impact events and …
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Stepping Back to Move Forward : A Poem Written in Light and Brick
… important it is to respect the properties and materials, each material has a structure or form that can be the most beautiful to express its essence. The reason that he taught the essence of materials by using "brick" as an example among numerous materials the characteristics of bricks are very …
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An investigation into the effects of surface composition and preparation on the mechanical properties displayed by equestrian surfaces.
There are a wide range of materials currently used for equine arena surfaces, all of which can be expected to have different physical and mechanical properties. There is currently little published research examining the characteristics of these surfaces, or describing methods which can be used to …
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Design and development of a time of flight fast scattering spectrometer : a quantitative surface analysis technique and a new approach towards the experimental investigation of the surface particle interactions
A new surface analysis technique has been developed which has a number of benefits compared to conventional Low Energy Ion Scattering Spectrometry (LEISS). A major potential advantage arising from the absence of charge exchange complications is the possibility of quantification. The instrumentation …
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Two-dimensional crystals : spectroscopy and electronic applications
… and 3D crystals is that 2D crystals are all-surface materials. Therefore, it is essential to understand how 2D materials interact with their environments and how this interaction impacts their electronic properties. From a practical perspective, it also provides us with a unique tool to …
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Methodology development and evaluation of automotive LiDAR performance in rain
… highly on three identified fields – kinematics, materials, and aerodynamics. This thesis research investigates sensor performance when driving in rain from a multidisciplinary perspective, which examines the stress factors affecting the vision of time-of-flight (ToF) LiDARs, including vehicle …
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Sustainable management of industrial capital: LCA and spatial analysis in decision making for beneficial use of industrial by -products
… understanding of multiple impacts in assessing materials for construction. Life cycle assessment was used to this effect to understand the impacts from the use of industrial by-products for different applications on different spatial scales. The first two studies looked at applications in …
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