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Showing 1 to 20 of 30 for “"single grain"”.
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From a single grain to microstructure: How explosive grains interact under shock compression
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms
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Improving the mechanical properties of Y-Ba-Cu-O single grain bulk superconductors
… work was to improve the mechanical properties of single grain YBCO bulk superconductors without causing significant detrimental effects to the superconducting properties of the material. It is widely acknowledged that large single grains of GdBCO and SmBCO with silver can be batch processed …
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Single grain detrital cosmogenic Ne-21 analysis: a new tool to study long-term landscape evolution
… to offer considerably more. This is because each grain leaving a catchment has a potentially unique history of erosion, transport and storage, and so the frequency distribution of cosmogenic nuclide concentrations in large numbers of grains can provide an integrated signature of the catchment's …
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In situ measurement of lattice strain using synchrotron radiation and a conical slit system
… Advanced Photon Source is utilized to isolate a single grain with an orientation of interest from the highly textured alloy. A total of 39 reflections contribute to the calculation of the strain tensor for each load step. Trends were realized in all six independent components of stain, and reveal …
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Transmission Electron Microscopy Study of Domains in Ferroelectrics
… link between domains coupling across adjacent grains and to explore the domains’ re-ordering as a function of heating through T<sub>C</sub>. Two cases were explored: domains coupling across a single grain boundary, and a more complex case of domains within adjacent grains meeting around a …
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Fatigue crack growth (FCG) modeling in the presence of nano-obstacles
… crack growth (FCG) in a nano-twinned nickel single crystal. Molecular dynamics simulations are employed to investigate the irreversible interaction of crack-tip emitted dislocations with nano-twins in the vicinity of the crack upon cyclic loading. A method is developed to quantify the …
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Isotopic characterization of bedrock, sediments, and minerals as provenance tools: Examples from an inselberg in the Mojave Desert of SE California
… used fingerprints in detrital analysis to a single case study of the Stepladder pluton. The Cretaceous Stepladder pluton (SE California) provides a unique environment to test some of the most basic assumptions of provenance analysis. The pluton should act as a point source for sediments …
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Investigating rates and mechanisms of lateral erosion in a small bedrock river using erosion pins, structure-from-motion photogrammetry, and optically stimulated luminescence dating: Konza Prairie, northeast Kansas
… patterns of erosion along bedrock channel banks. Single-grain optically stimulated luminescence (OSL) dating of fluvial deposits overlying a strath terrace was used to determine the depositional age of fluvial deposits and infer the duration of lateral channel mobility during terrace occupation. …
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Identification and Characterisation of the Barley Row-Type Gene <i>VRS3 </i>
Barley row-type describes the number of grains present at a node on the barley spike. Two forms exist amongst cultivated barley: two-rowed with only the central of three spikelets fertile producing a single grain at a node and six-rowed with all three spikelets fertile, producing three grain at a …
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Cenozoic exhumation history of the northern Richardson Mountains: Results from apatite and zircon (U-Th-Sm)/He analysis
… rocks across a 115 km transect. Eighty-eight single-grain AHe dates range from 300 ± 5 Ma to 16 ± 4 Ma but most dates (65%) range 56–24 Ma. AHe dates are generally younger than the stratigraphic ages, indicative of thermal resetting by burial. Additionally, zircon (U-Th)/He (ZHe) data were …
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Improvement in the Growth and Superconducting Properties of Bulk Sm-Ba-Cu-O Superconductors Fabricated in Air
… finally, to scale-up the fabrication of SmBCO single grains, therefore realising the engineering applications of this technologically important material. A modified seeding technique using an MgO-NdBCO generic seed accompanied by a buffer layer has been developed to process the SmBCO system to …
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Deriving The Density Of States For Granular Contact Forces
The density of single grain states in static granular packings is derived from first principles for an idealized yet fundamental case. This produces the distribution of contact forces P_f(f) in the packing. Because there has been some controversy in the published literature over the exact form of …
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Decagonal quasicrystals in the Al(Si)-Cu-Co alloy system
… quasicrystal can not be obtained in a single grain suitable for the x-ray study. The alloy Al62Si3Cu20Co15 was used to grow single crystals. The resulting grains have deca-prismatic morphology, and the grain size is 0.5mm in diameter and several millimeters in length. The TEM study …
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Mechanisms of Shear Zone Localization and Raman Thermobarometry in Spinel Peridotites from the Alpine Fault, New Zealand
… has evidence of dislocation creep with subgrains, recrystallized grains, undulose extinction and a lattice preferred orientation. These samples also show evidence of post deformation static grain growth with polygonal grains, 120° triple junctions, and euhedral grains within larger grains …
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Shape memory ceramics in small volumes
… due to the inherent physical constraints of the grains that create stress concentrations and eventually leads to intergranular fracture. Here it is proposed that single crystalline and oligocrystalline ceramics-made with a single grain or very few grains-will avoid the physical constraints found …
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Stratigraphy and Tectonics: Multi-Disciplinary Evaluation of Tectonic Models For the Eastern and Southern Continental Margins of North America
… orogen's tectonic history. The distribution of single-grain detrital-zircon ages collected from the Upper Ordovician through upper Mississippian sandstones records the sedimentary response to Taconic, Acadian and Alleghanian phases of orogenesis. This analysis suggests the Late Ordovician …
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Medium-Term (Months to Years) Morphodynamic Modelling of a Complex Estuarine System
… is neglected, the predictions carried out with a single grain size do not replicate the observed sediment import to the estuary from the neighbouring coastal region, due to the ebb dominated tidal regime found at Teignmouth. The importance of the combined effects of wave stirring and mixed grain …
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The mechanical properties of Y-Ba-Cu-O and Gd-Ba-Cu-O/Ag bulk superconductor magnets
Single-grain RE-Ba-Cu-O bulk high temperature superconductors [or (RE)BCO, where RE = rare earth element or yttrium] have demonstrated significant potential for practical applications due to their ability to trap magnetic fields in excess of 17 T, which is an order of magnitude greater than what …
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Development of a Luminescence protocol for the dating of historical mortars [Sviluppo di un protocollo di Luminescenza per la datazione delle malte storiche]
… grossolano (200–250 μm) è stata datata mediante Single-Grain Optically Stimulated Luminescence (SG-OSL), adottata come metodo di riferimento per la determinazione della dose equivalente. In parallelo, misure di TL su polveri di malta non preparate sono state analizzate mediante deconvoluzione …
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Grain boundaries in coated conductors
… (the critical current density Jc) was limited by grain boundaries (GBs). In order to reduce their detrimental effects coated conductors have been developed, in which a superconducting thin film is deposited on a polycrystalline, textured substrate. Within certain temperature and magnetic field …
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