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 62 for “"Crests"”.
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Condensation and Freezing Front Propagation on Surfaces With Topographic and Chemical Modifications
… retarded in troughs and accelerated on crests. When the water freezing point moves at a constant speed, the speed of a freezing front on crests can be more than 8 times the speed in troughs. A numerical estimation shows that the difference of the propagation speeds on crests and in …
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Theoretical aspects of electrodeposition in charged porous media
… between a destabilizing force caused by surface crests growing more rapidly than surface troughs in a positive feedback loop and a stabilizing force arising from surface energy effects that prevent the surface from roughening excessively. The physical manifestation of this surface instability is …
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DEVELOPMENT OF THE ROCKY MOUNTAIN FORELAND BASIN: COMBINED STRUCTURAL, MINERALOGICAL, AND GEOCHEMICAL ANALYSIS OF BASIN EVOLUTION, ROCKY MOUNTAIN THRUST FRONT, NORTHWEST MONTANA
… and buckled over fault-propagation anticlinal crests in the Late Cretaceous-Paleocene fold-and-thrust belt. The model proposes that the grikes record uplift and erosion followed by subsidence as the Rocky Mountain foreland experienced elastic flexure in response to tectonic loading at the plate …
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DEVELOPMENT OF THE ROCKY MOUNTAIN FORELAND BASIN: COMBINED STRUCTURAL, MINERALOGICAL, AND GEOCHEMICAL ANALYSIS OF BASIN EVOLUTION, ROCKY MOUNTAIN THRUST FRONT, NORTHWEST MONTANA
… and buckled over fault-propagation anticlinal crests in the Late Cretaceous-Paleocene fold-and-thrust belt. The model proposes that the grikes record uplift and erosion followed by subsidence as the Rocky Mountain foreland experienced elastic flexure in response to tectonic loading at the plate …
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Plasma-Enhanced Continuous Carbon Fibre-Reinforced Composites Manufactured from Recycled Thermoplastics
… consisting of a slot channel with a series of crests, was developed in this thesis to impregnate CF tows with thermoplastic blends. Static and crest pressure in the die facilitated a high degree of impregnation at manufacturing speeds exceeding 1 m.min−1. The melt impregnation and APPJ …
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Bed Morphology and Sediment Transport Under Oscillatory Flow
… their size. These last ripples had round crests, and do not seem to belong to the same bedform class as the sharp crested ripples usually reported in the literature.
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Detection and characterization of deep water wave breaking using moderate incidence angle microwave backscatter from the sea surface
… The wind speed dependence of the percentage of crests producing sea spikes is comparable to that of the fraction of breaking crests reported by previous authors. The percentage of wave crests producing sea spikes is found to vary approximately as (Re*)1.5, where Re* is a Reynolds number based on …
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Dispersive waves in Earth's outer core
… of the spacing and orientation of its wave crests; the behaviour of such waves is remarkably rich and has frequently counter-intuitive consequences. Our analysis begins at the very smallest scales of the convection which stirs the liquid iron outer core, asking how localised features - such …
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Extreme Variation in the Sagittal Crest of Tapirus polkensis (Mammalia Perissodactyla) at the Gray Fossil Site Northeastern TN.
… observed. Several juveniles display well defined crests, while some adults have only minor thickening of the temporal ridges; therefore, no distinct correlation between age and crest state could be established. Three different patterns of wear exist within the sample, but there is no correlation …
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Aeolian sand movement in an arid linear dune ecosystem, Nizzana, Western Negev, Israel
… reduction of obviously active areas on the dune crests was observed. The situation on Egyptian territory west the border remained unchanged until today. This study is aimed at understanding the changed aeolian morphodynamics east the border. The emphasis was placed on the investigation of the …
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The Hydrogeology of Nags Head Woods, Dare County, North Carolina
… across the island forms an elongate dome which crests east and northeast of Fresh Pond. Municipal pumpage of Fresh Pond lowers lake water levels by 1.5 m to 2.0 m.</p> <p>A finite-difference model (PLASM) was used to predict the effects of pumping from Fresh Pond.</p>
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Display behavior of an Hispaniolan anole: Anolis bahorucoensis
… expansion/dewlap extension, dorsal and nuchal crests, lateral compression, lateral presentation and bow. Two modifiers performed by males were unique to A. bahorucoensis: labeled as "hip-kick" and “head-swing". Use of displays and modifiers was examined for four contexts: malealone, male-male, …
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Quantitative Characterization of Billowed Structures Along the Margins of Basaltic Intrusions to Determine Process and Timing of Formation: Case Studies from Big Bend National Park, Texas and 71 Gulch, Idaho
… fluid, deformable, and flowing. Linear billow crests in BBNP were commonly subvertical in orientation, while at the shallower system of 71 Gulch, no organization of billow orientations was observed. The inclusion of sedimentary particles in the glassy margins of the intrusion support the claim …
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The effect of fluid acceleration on sediment transport in the surf zone
… acceleration signatures beneath their respective crests and troughs. The consequences of this dissimilarity on sediment transport is not fully understood. This thesis develops methodologies to predict sediment transport under these asymmetric, skewed waves. Two different transport mechanisms are …
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Photochromic Molecular Materials for the Controlled Organization of Nanoparticles
… to align polystyrene nanoparticles in the crests and troughs of the gratings. Secondly, the fabrication of azo nano objects will be discussed, here the photochromic studies showed the azo nanospheres had a larger photochemical conversion then their corresponding thin films. These …
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Development of Small-Footprint Large-Amplitude Tripod (three lambda) Mode Traveling Wave Generator
… wave of three lamda mode shape (i.e. of three crests and three troughs) along the circumference of both end faces to provide stable, non-rocking drive for ultrasonic micromotors. The FEA results revealed that the said mode shape can be realized with a short aluminum cylinder of 14 mm in OD, 12 …
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Sequência de ossificação craniana de Aparasphenodon brunoi Miranda-Ribeiro, 1920, com comentários sobre o condrocrânio e o desenvolvimento da ornamentação óssea (Amphibia, Anura, Hylidae)
… of the adult cranium, and the development of crests and spines that ornaments the cranial roof elements were described. Among the main resulta were the develoi;:ment of the prenaaal bone from two independent oaaification centers, the abaence of a dermal aphenetmoid, and the ornamentation …
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Three-dimensional solitary waves in dispersive wave systems
… fully localized wavepackets with envelope and crests moving at the same speed, and the wave envelope along with the induced mean-flow component are governed by a coupled Davey-Stewartson equation system of elliptic-elliptic type. The lump profiles feature algebraically decaying tails at …
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The natural recolonisation process of the seagrass Posidonia oceanica (L.) Delile after the introduction of the Italo-algerian methane pipeline in the SW Mediterranean Sea.
… deposition. Sheltered (valley) and exposed (crests) locations on the mounds show different physical and geological characteristics. Differences in the sediment dynamics between exposed (crests) and sheltered (valleys) locations on the mound field entail differences in the amount of nutrient …
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Three-dimensional acoustic propagation through shallow water internal, surface gravity and bottom sediment waves
… energy beams along the sand wave’s curved crests.
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