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Showing 1 to 15 of 15 for “"Polished surfaces"”.
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Microreflectance and ellipsometric studies on the polished surfaces of some minerals
… is discussed and the importance of using 'real surfaces' in order to make possible the geological and commercial application of this study is emphasised.
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Evaluating the use of laser processing and polishing techniques to generate micro-patterned surfaces for controlling fibroblast cell behaviour
… in a directional manner resulted in polyurethane surfaces having a ploughed field effect with micron-scale features a novel surface. In contrast, abrasive polishing in a directional and random manner resulted in polyurethane surfaces having sub-micron scale features orientated in a linear or …
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The Design and Analysis of Several Configurations for a Two Channel, Three Mirror X-Ray Telescope.
… [2] first reported reflecting x-rays from polished surfaces of glass and other materials. The angles of incidence required were very large—in the case of glass, 89 degrees 49 minutes of arc—for reflection of x-rays of 1.27Ã… wavelength. Such reflection of x-rays is called glancing …
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Paleoecology and Taphonomy of Middle Pennsylvanian-Age Coal-Swamp Plants: Herrin Coal-Ball Peat and Coal, Peabody Camp 11 Mine, Herrin Coal, Western Kentucky
… coal swamps directly from etched polished surfaces of coal. Vegetation of two coal-ball profiles and four coal-column samples from the Herrin Coal Member (Kentucky No. 11), Carbondale Formation at Peabody Coal Company's Camp 11 mine in western Kentucky were compared. An estimated …
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Characterization of dispersive and distributive mixing in a co-rotating twin-screw compounding extruder
… filler using reflected light microscopy on polished surfaces, and transmitted light microscopy of microtomed pigmented sections. Stereological statistics have been applied to raw sample data; results are discussed in relation to mechanistic phenomena influencing particle agglomeration, …
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Dynamic response of glass under low-velocity impact and high strain-rate compression loading
… glass specimens with three different polished surfaces were tested to study the effects of surface polishing on their dynamic compression behavior. A marked improvement has been observed in specimens with less surface flaws. A high-speed camera was also utilized (at 500,000 fps) to …
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Influence of structural variability on glacially-eroded steps, Uinta Mountains, UT
… slides along the bedding planes, abrading the surfaces. Field observations and GIS analysis show a prevalence of steep cliff features in the south and low-slope polished surfaces in the north; features that support the dominance of quarrying and abrasion respectively. Furthermore, I use a …
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Novel active waveguide devices in direct-bonded structures
… technique involves contacting two ultra-clean polished surfaces to form an adhesive-free vacuum-tight bond. Optical materials bonded in this way can be formed into waveguide devices, and this work extends direct bonding to include periodically poled materials and a new solid-state ion-exchange …
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Mechanical properties of a new zinc-reinforced glass ionomer restorative material
… (25 g, 30 s),on pre-determined areas of the polished surfaces. For toothbrushing wear resistance and roughness, specimens were brushed in an automated brushing machine (200 g) with a suspension of dentifrice and water (1:1, w/v) for 20,000 strokes. Specimen surfaces were scanned in an optical …
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Laboratory investigation of diamond grinding and grooving textures on concrete pavement surfaces
… and applies it to four sections that have polished surfaces in the Dallas and Fort Worth districts, in the state of Texas. A part of this study also explores the potential of re-grinding a section after the textured surface is polished. An equal performance was observed after re-grinding …
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Plastic optical fibre couplers with wavelength division multiplexing capability for short-range peer-to-peer communication in networking and industrial applications
… by modifying the reflector length between the polished surfaces of the backbone and coupling fibres. Together, these mechanisms permit accurate tailoring of the optical power split at the design stage, eliminating the need for post-fabrication calibration and enhancing design flexibility. This …
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Developing Levitation Laser-Fused Glasses as Proxies for Lower Mantle Experiments: a Methodological Approach
… a dual polish is applied, exposing parallel flat polished surfaces for scanning electron microscope (SEM) and electron probe microanalyzer analyses (EPMA). Back-scattered electron images and energy-dispersive x-ray spectroscopy (EDS) analyses of the spheres are obtained first on the SEM to gauge …
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Reactivity of crystalline slag phases in cementitious systems
… formation in Portland cement-type systems. Polished surfaces of limestone, quartz, fayalite, and diopside were exposed to Ca and Si rich solutions and the resultant reaction products were characterized using scanning electron microscopy. The results of this study indicate that calcium …
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The palaeoredox condition and morphological variation of microbialites from the Nama Group, South Africa
… and mineralogy using XRD, SEM, petrography, and polished surfaces. I have also analysed high-resolution rare-earth element patterns from microdrilled microbial laminae to study local redox conditions. Analysis of the mesostructure and microstructure of the microbialites indicates that they were …
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The microstructure and properties of hipped powder Ti alloys
… than samples with as-HIPped, machined or electro-polished surfaces which were produced by conventional HIPping . The properties of optimally HIPped Ti-6Al-4V samples are as good as or better than ingot-route samples. In the case of BuRTi the original single crystals or coarse grained polycrystals …