نتایج جستجو برای: salt deposits
تعداد نتایج: 107902 فیلتر نتایج به سال:
The presence of calcium and humic substances or natural organic matter (NOM) in surface waters can cause severe fouling of nanofiltration (NF) membranes. Conditions of fouling were studied using a stainless steel stirred cell of volume 185 mL and a membrane area of 21.2*10-4m2 at a transmembrane pressure of 5 bar. Deposition of organic matter was determined by mass balance in feed and concentra...
Magnesium Products Limited has been very successful in converting from machining magnesium die castings dry to machin'ng with oilin-water emulsions, more commonly called water soluble oils. When machining with water soluble coolants one can expect; 1) excellent fire protection; 2) improved tool life; 3 ) ease of housekeeping, and 4 ) improved productivity. Problems previously encountered with w...
In the Campeche Knolls, in the southern Gulf of Mexico, lava-like flows of solidified asphalt cover more than 1 square kilometer of the rim of a dissected salt dome at a depth of 3000 meters below sea level. Chemosynthetic tubeworms and bivalves colonize the sea floor near the asphalt, which chilled and contracted after discharge. The site also includes oil seeps, gas hydrate deposits, locally ...
koenenite=[mg7ai4(oh)22]4+.[na4(ca,mg)2ci12]4- , is a typical non-silicate clay mineral of oceanic salt deposits which also widely occurs in salt clay, anhydrite, halite, and potash-bearing rocks. koenenite is found as an undesirable sludge-forming component in the processing of potassium salts . koenenite was first reported, in 1902, as an impurity in a fairly pure halite from the justus! pota...
The strategic importance of lithium in global development has become increasingly prominent due to the rapid growth new energy automotive industry and continuous advancements controllable nuclear fusion technology. Lithium minerals salt lakes possess advantageous characteristics, such as abundant reserves, environmental sustainability, economic viability. Furthermore, with ongoing improvements ...
The hand stencils of European Paleolithic art tend to be considered of pre-Magdalenian age and scholars have generally assigned them to the Gravettian period. At El Castillo Cave, application of U-series dating to calcite accretions has established a minimum age of 37,290 years for underlying red hand stencils, implying execution in the earlier part of the Aurignacian if not beforehand. Togethe...
Lithium ore deposits are divided into pegmatite and brine deposits. The Puna Plateau the Qinghai–Tibetan (QTP) home to most abundant lithium worldwide. Very few studies have investigated chronology of This paper reports Optically Stimulated Luminescence (OSL) dating measurements for typical at QTP, including East Taijnar Salt Lake, West Yiliping Lake in central Qaidam Basin. Combining results O...
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