نتایج جستجو برای: sic sand packs
تعداد نتایج: 43892 فیلتر نتایج به سال:
S OF RECENT SCIENTIFIC PUBLICATIONS BY THE STAFF OF N.V. PHILIPS' GLOEILAMPENFABRIEKEN Reprints of these papers not marked with an asterisk * can be obtained free of charge: upon application to the Philips Research Laboratories, Eindhoven, Netherlands. : Many sulphide phosphors, embedded in a suit-: 2613: able binder, fluoresce when subjected to an alternating electric field (electroluminescenc...
Metal matrix composite (MMC) technology can improve the service performance of matrix metals and alloys. Most magnesium alloy based MMCs are produced via a casting process, therefore the casting microstructures are of vital importance to their performance in service. The formation of microstructure during solidification of MMCs is mainly influenced by four factors: nucleation (or its absence) o...
The use of solid particles as a solar energy transport and storage medium overcomes the intermittency issues for is advantageous development hybrid process that integrates biomass thermal energy. In this study, lab-scale experimental equipment consisted bubbling fluidized bed (55 mm I.D. 200 height) with direct irradiated was designed constructed. Sand, alumina (Al), silica carbide (SiC) 3 diff...
The main limitation of Concentrated Solar Power (CSP) is its maximum operating temperature, since the fluid used as heat transfer (HTF) and thermal storage media (TES) molten salts, which degrade around 565 °C. Therefore, there great interest in developing HTFs that allow working temperature to be increased more than This increase will, turn, CSP plant efficiency enhanced. Different studies hav...
Glass wool waste remains a challenging fraction with relatively little utilization prospects. The present study investigated the development of porous ceramic materials from glass and spodumene tailings mainly made quartz feldspar sand (QFS), 0.05–0.5% silica carbide (SiC) as pore-forming agent. formulated compositions were sintered at 950 °C analyzed in terms mechanical properties, phase compo...
Leaf litter decomposition in a tropical stream was examined in two types of leaf packs; single species leaf packs of Pometia pinnata and two species leaf packs of equal combination of Pometia pinnata and Dolichandrone spathacea leaves. Both leaf packs were immersed in a river and weekly examined for remains of decomposed leaves and presence of EPT. In the control leaf packs, leaves in the two s...
INTRODUCTION Cigarette packaging is among the most prominent forms of tobacco marketing. This study examined the impact of cigarette pack design among young women in the United States. METHOD A national sample of 18- to 19-year-old females in the United States completed an online survey in February 2010. Participants were randomized to view eight cigarette packs designed according to one of f...
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