Results 21 to 30 of about 423,639 (283)
Frontiers in Earth Science, 2023 Calcite cement is widely existing in sandstones and can significantly affect the elastic and electrical properties of sandstones. Accordingly, understanding the effects of calcite cement on the elastic and electrical rock properties is of key importance ...
Pan Wang +4 more
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PRODUCTION OF COMPOSITE CERAMIC MATERIAL FOR THERMAL SPRAYING
Наука и техника, 2017 A composite ceramic material has been developed for thermal spraying that permits to increase wear resistance due to introduction of high-chromium steel and molybdenum in its structure, to obtain optimum porosity in the starting charge material while ...
V. A. Okovity +3 more
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Permeability and dynamic elastic moduli of controlled porosity ultra-precision aerostatic structures [PDF]
, 2014 Porous ceramic aerostatic bearings enable precise and smooth motion and improved stiffness compared with widely used orifice restrictor bearings. However, the processing techniques so far used are too complex or rely in lowering the sintering temperature
Corbett, John +2 more
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The Assessment of Level of Flash Floods Threat of Urbanised Areas
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2017 Flash floods (or torrential rain flooding) is another type of flood hazard which has caused casualties and significant property damages. A methodology for identification of urban areas, which can potentially be burdened by that type of flood hazard, was ...
Pavla Štěpánková +2 more
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Surface and porosity of nanocrystalline boehmite xerogels [PDF]
, 2005 Boehmite xerogels are prepared by hydrolysis of Al(OC4H9)3 followed by peptization with HNO3 (H+/Al = 0, 0.07, 0.2). XRD and TEM show that these gels are made of nanosized crystals (5–9 nm in width and 3 nm thick).
Courty, Matthieu, Alphonse, Pierre
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Finite element analysis of the effect of porosity on residual stress in 2024 aluminium alloy GTAW
Materials Research Express, 2020 Simulations of the welding process for butt joints using finite element analysis (FEA) of the effect of porosity are presented. The metal used was aluminium alloy (grade 2024), and the filler material was alloy ER5356.
Pattarawadee Poolperm +2 more
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Nanomaterials, 2023 A novel nanoporous adsorbent was obtained through the thermal treatment and chemical wash of the wasted crab shells (BC1) and characterized by various techniques.
Fran Nekvapil +6 more
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Porosity imaging in porous media using synchrotron tomographic techniques [PDF]
, 2004 This paper describes novel uses of synchrotron radiation in examining porosity distributions within porous media. Tomographic energy dispersive diffraction imaging and Tomographic X-ray fluorescence have been combined within one measurement method and ...
Atkinson, Tim +8 more
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Note on the importance of hydrocarbon fill for reservoir quality prediction in sandstones [PDF]
, 2002 Oil emplacement retarded the rate of quartz cementation in the Brae Formation deep-water sandstone reservoirs of the Miller and Kingfisher fields (United Kingdom North Sea), thus preserving porosity despite the rocks' being buried to depths of 4 km and ...
Fallick, A.E. +3 more
core +6 more sources
Controlled porosity alumina structures for ultra-precision hydrostatic journal bearings [PDF]
, 2010 A series of fine-grade alumina powders has been used in combination with maize starch granules to produce porous structures for porous hydrostatic journal- bearing applications. A comprehensive series of tests was conducted to characterize porosity in
John Corbett +6 more
core +1 more source