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 70 for “"Coring"”.
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Rover manipulator position control and coring feasibility evaluation
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2000.
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Noise reduction in video images using coring on QMF pyramids
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1991.
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Performance, evaluation, and rehabilitation of asphalt-overlaid concrete pavements
… performance, distress, roughness, deflection, coring, and materials data for project-level evaluation and rehabilitation planning and design.
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Refining dendrochronology to evaluate the relationship between age and diameter for dominant riparian trees in the Redwood Creek watershed
… of dendrochronology by means of incremental coring</p> <p>have been refined in this study for specific use in northern</p> <p>California riparian floodplains. Little information is available</p> <p>on riparian dendrochronology because of the challenges of</p> <p>analyzing riparian tree …
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Prospecting the physicochemical past. Three dimensional geochemical investigation into the use of space in Viking Age sites in southern Norway using portable XRF.
… sampling strategies were developed that included coring as a prospection method combined with high-resolution GPR data. The combination of portable XRF and coring, both within excavation contexts and as prospection, allowed high resolution analysis directly onto the core. The minimal sample …
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Accuracy of hay moisture sensing systems for round alfalfa bales
… this project are to 1) Establish a protocol for coring methodology to assess the variation of moisture within a round alfalfa hay bale, and 2) Compare and contrast sensing accuracy and repeatability of different hay moisture sensing technologies. A coring methodology was established to determine …
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Evaluating The Most Reliable Combination Of Non-Destructive Test Methods For Concrete Uniformity And Relative Compressive Strength.
… pulse velocity and Impact Echo methods before coring and 28 days after coring and repair of the two beams. Destructive testing was also conducted through drilling of cores from the RC beams and laboratory testing for compressive strength, for a comparative analysis between results obtained …
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Formation and Evolution of Valdivia Bank, Walvis Ridge, South Atlantic Ocean from Geophysical Data and International Ocean Discovery Program Expedition 391 Drilling Results
… lacked detailed geophysical investigation and coring, obscuring the formation history and evolution of this plateau. Geochemical and paleomagnetic studies suggest that Valdivia Bank is complex, revealing a potential microplate and ridge reorganization in the Late Cretaceous, and late-stage …
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Online independent film distribution : what is missing?
… by Prof. Annabelle Gawer, as well as the "coring and tipping" strategy outlined by Prof. Gawer and Prof. Cusumano, the analysis in this paper shows that a company can become a platform leader by integrating two sides of the value chain: distribution and funding. This strategy will …
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Erosion and sedimentation in Lake Ashtabula, southeastern North Dakota
… in the lake. Sediment samples taken along· coring ranges were analyzed for particle size, organic content, total carbonate, mineralogy, and com paction. The total amount of sediment between each coring range was calculated. </p><p> The accumulating sediment is gelatinous in appearance and …
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An Analysis of Base-Level Conduit Sedimentation in South Central Kentucky
… including land-use. Samples were collected using coring tubes to preserve the structure within the sediment. The structure was documented visually, recording distinct changes in the layering. The textural variations were determined through sieving samples at 5 cm intervals. Passage morphology was …
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Load and resistance factor design of drilled shafts in shale using SPT and TCP measurements
… test (TCP), as surrogates for conventional coring and laboratory testing. In order to utilize results of in-situ tests for design of drilled shafts using Load and Resistance Factor Design (LRFD), it is necessary to correlate in-situ test measurements with side and tip resistance and to …
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Analysis and pattern mapping of organic interfaces by means of seismic geophysical technologies to investigate archaeological palaeolandscapes beneath the Southern North Sea
… such peat beds in an archaeologically focused coring programme. The research also examines ways in which organic responses may be mapped over larger areas in order to integrate the results into a wider scale landscape model identifying potential peatland, marsh, valley fen and lowland areas. …
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The use of geomorphological and pedological soil characteristics to assess planar borrowing at a Mandan Indian village, North Dakota
… behavior unique to the region. A soil-coring program was conducted with: transects both within the village and in an adjacent area of similar, relatively undisturbed soil to serve as a control. An underlying, contiguous paleosol (Early Holocene) is used as the stratigraphic reference in …
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Application of a discrete element model to the analysis of granular soil recovery in an offshore tubular vibrocore
… of the seabed geology is required. Deep-sea vibrocoring is a relatively new offshore sampling technique. The system consists of a vertical, tubular core barrel with a sharp cutting edge at its lower end vibrated into the seabed by a high-frequency, low-amplitude vibratory motor. In the past, …
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Experimental analysis of natural gas transport: using nanoporous ceramic cores as mimetic model for low permeability reservoirs.
… friendly alternative to traditional coring methods, which are often expensive and environmentally intrusive. The study highlights how factors such as pressure, temperature and fluid viscosity impact gas transport in nanoporous ceramic cores and how these impacts are mirrored in the …
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A Re-Evaluation of Mountain Lake, Giles County, Virginia: Lake Origins, History and Environmental Systems
… complete bottom sediment cores from the lake. Coring was done using a diver-assisted manual coring device designed specifically for this project. 5. To analyze Mountain Lake sediment cores for sedimentology, age determination, and temporal differences in sediment characteristics, diatoms and …
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Small-Scale Resuspension and Redistribution of Surface Sediments in the Northeast Gulf of Mexico
… is thought to be the dominant process of that coring location. Sites were reclassified based upon ease of initial transport of material and the shear stress of pulses, or peaks, in eroded sediment volume. All cores had erosion begin at -2(4.6 cm s<sup>-1</sup>) and nearly all cores had large …
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Of His Bones are Coral Made: Submerged Cultural Resources, Site Formation Processes, and Multiple Scales of Interpretation in Coastal Ghana
… investigations, and the micro-sampling sediment coring technique developed over the course of field research, the historical and physical environment of coastal Elmina is studied as a means of interpreting the unique events surrounding a specific shipwreck, and to relate formation processes …
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Dissolution-enlarged fractures imaging using electrical resistivity tomography (ERT)
… Analysis of Surface Wave (MASW) method and coring were employed to validate the interpretation results.</p><p>Two sets of orthogonal visually prominent joints have been identified in the investigation site: north-south trending joint sets and west-east trending joint sets. However, most of …
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