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    • Software NIST

      2018 11 8ensp;0183;ensp;Advanced options. Topic Area

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    • Silver and Silver Compounds Environmental Aspects

      2018 10 9ensp;0183;ensp;This report contains the collective views of an international group of experts and does not necessarily represent the decisions or the stated policy of the United Nations Environment Programme, the International Labour Organization, or the World Health Organization.

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    • Cobalt

      2018 11 8ensp;0183;ensp;Cobalt is a chemical element with symbol Co and atomic number 27. Like nickel, cobalt is found in the Earth's crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver gray metal. Cobalt based blue pigments (cobalt blue

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    • Corrosion of Cast Irons ispatguru

      Corrosion of Cast Irons. Cast iron is a standard term which is used for a large family of alloys of ferrous materials. Cast iron is mainly alloy of iron (Fe) which contains higher than 2 % of carbon (C) and more than 1 % of silicon (Si).

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    • Zinc

      2018 11 5ensp;0183;ensp;Zinc is a chemical element with symbol Zn and atomic number 30. It is the first element in group 12 of the periodic table.In some respects zinc is chemically similar to magnesium both elements exhibit only one normal oxidation state (+2), and the Zn 2+ and Mg 2+ ions are of similar size. Zinc is the 24th most abundant element in Earth's crust and has five stable isotopes.

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    • The bioleaching of sulphide minerals with emphasis

      The most successful copper heap leaching operations have been those processing copper oxides and secondary copper sulphides ().Chalcocite (Cu 2 S) is the main copper sulphide mineral mined at bioleaching operations. Some of the chalcocite heap operations began as oxide (chemical) leach operations and were converted to bioleach (oxidative) operations by heap aeration and/or inoculation,

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    • UNSPSC Selector Tool APUC

      2014 2 21ensp;0183;ensp;A selector tool to be used by suppliers and buying organisations preparing a catalogue for upload into PECOS; Updated on 10th September 2008 for use with Excel 2007.

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    • (An English Chinese Japanese

      2015 1 4ensp;0183;ensp;MSC, ==gt; Main Ship Equipments Equipment Types Main Marine Manufacturers Ship Spare Parts, =1=A=B=C=D=

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    • Arsenic removal from water/wastewater using

      1.. IntroductionArsenic (atomic number 33) is ubiquitous and ranks 20th in natural abundance, comprising about 0.00005% of the earth's crust, 14th in the seawater, and 12th in the human body .It's concentration in most rocks ranges from 0.5 to 2.5 mg/kg, though higher concentrations are found in finer grained argillaceous sediments and phosphorites , .

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    • Minerals March 2018 Browse Articles

      2018 3 15ensp;0183;ensp;Minerals, an international, peer reviewed Open Access journal. Diatomite, a rock formed by the accumulation of opaline diatom frustules, is a preferred raw material for the manufacturing of filters.

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