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Showing 1 to 14 of 14 for “"Mineral constituents"”.
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Cone in Cone Concretions of the Stanley Group in southeastern Oklahoma
… external morphologies and four variations of mineral constituents. All concretions contained microscopic cones which initiated diffusion and/or fluid patterns and is an early cementation process that directly altered the sediment compared to the surrounding deposits. The patterns initiated …
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The Effect of Clay Content and Iron Oxyhydroxide Coatings on the Dielectric Properties of Quartz Sand
… for the contributions of different types of mineral constituents that affect the ratio and properties of bound and bulk water. This study tested the hypothesis that the dielectric responses of porous materials are mineral-specific through differences in surface area and chemistry. An …
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A comparative study of metamorphosed supracrustal rocks from the western Namaqualand metamorphic complex
… Further subdivision, based on variations in mineral constituents within each group, also occurred, as well as the presence of lithologies with compositions transitional between certain groups. The various supracrustal sequences were subdivided into formations containing minor distinctive …
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Evaluation of hydroxyapatite (HA) from waste eggshell strengthened with ultra high molecular weight polyethylene (UHMWPE) by using injection molding process
… (FDA) , due to its similarity with the mineral constituents of human bones and teeth which is Ca/P=1.67. HA was analysed under Energy-Dispersive Analysis X-ray system (EDX) in order to investigate the mineral constituent. The HA then was mixed with UHMWPE inside the brabender plastograph …
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Pore pressure, and the interdependency between lithology, porosity, and acoustic log response targeting the Vaca Muerta Formation
… these wells possess similar stress states, mineral constituents, and porosities. This finding allows for a compressional velocity log correction back to a constant lithology and porosity, variation from which is attributed to effective stress. The effective stress component, and its relation …
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Modification of mineralized collagen scaffolds to overcome challenges of craniomaxillofacial bone repair
… and in unlimited supply. One such material is mineralized collagen scaffolds, which have many of the organic (type I collagen, glycosaminoglycans) and inorganic (calcium and phosphorous mineral) constituents of natural bone within a porous sponge. These materials can regenerate …
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Thermo-analytical and spectroscopic characterisation of pore lining minerals in reservoir rocks.
… been directed towards determining the surface mineralogy in order to understand the flow of fluids through rocks.The first method employs Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS) to distinguish the constituent minerals of a reservoir rock using characteristic bands …
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A study of the gelation of air-setting refractory mortars
… ions removed.</p> <p>The effect of the mineral constituents of the clays used in the mortars was discussed. One of the clays was found to contain considerably more free silica than did the other clay. This did not seem to have too great an effect on the hardening during the storage …
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Characterizing Trace Element Associations in the Pittsburgh No. 8, Illinois No. 6 and Coalburg Coal Seams
… design and inadequate liberation of coal and mineral matter. These problems are often difficult to correct in the absence of characterization data regarding the mineralogical association and washability of trace elements in run-of-mine coals. Therefore, the first step in removing the trace …
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Fundamental studies of the behaviour of biomass and waste materials in gasification systems
… ith increasing CaO content. The effects of mineral constituents on the behaviour of biomass materials was further studied by subjecting cereal straw and pine wood samples to acid washing in both 1M HNO₃ and HCl solutions. The ash contents were reduced in all cases and the resultant char …
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Characterisation of minerals using evolved gas analysis and infrared spectroscopy.
… have been used for the characterisation of minerals in powders and in rocks. Particular emphasis has been directed towards the use of chemical probes to elucidate the surface mineralogy in order to provide detection profiles suitable for both qualitative and quantitative chemometric …
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Paleo-environmental conditions and tectonic settings of cretaceous-tertiary kaolins in the Eastern Dahomey and Niger Delta Basins in Nigeria.
… deposits were analysed for physico-chemical, mineralogical, geochemical, isotopic, and geochronological data. The geochemical data obtained by x-ray fluorescence (XRF) spectroscopy and laser ablation inductively coupled plasma mass spectrometry (LAICPMS) were used in unraveling the provenance …