نتایج جستجو برای: magnesite
تعداد نتایج: 348 فیلتر نتایج به سال:
Abstract— Based on Sm–Nd data, a crustal source of iron-ore fluid was substantiated and the probability age estimation for hydrothermal–metasomatic siderite Bakal Group, Southern Urals, shown first time. The εNd (Т) values (from –13.4 to –17.6) plot in field Riphean shale not Precambrian rift gabbro granite this region. obtained is 970 ± 40 Ma, which consistent with Pb–Pb from major ore phase (...
Theoretical studies of the thermal state heat storage elements with air channels various shapes in modes charging and output electric (ETS) are carried out. The mathematical model exchange processes adapted to operating ETS is presented. change average transfer coefficient conditions natural forced convection ETS, flux density mode from a tubular heating element (TEH) for slit round shape shown...
INSTRUMENTATION FOR MARS T.Tomkinson, S.D.Wolters, B.W.Guthery, A.F.Bohman, B.Sund, A.T.Sund, J.K.Hagene and M.M.Grady, PSSRI, The Open University, Walton Hall, Milton Keynes MK7 6AA, UK ([email protected]), Dept. of Mineralogy, The Natural History Museum, London, SW7 5BD, UK, NavSys AS, Fjellhamarveien 46, 1472 Fjellhamar, Norway, Norsk Elektro Optikk AS, Solheimveien 62 A, N-1473 Lør...
Flow-only and coupled flow-diffusion experiments at 95 °C 100 bars pCO2 carried out in micro-capillary tubes packed with forsterite mineral grains were used to constrain a classical heterogeneous nucleation crystal growth reactive transport model describing the formation of secondary magnesite. The study made use novel experimental setup which one capillary tube for flow is connected via three-...
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