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English-Russian dictionary of geology. 2011.
English-Russian dictionary of geology. 2011.
Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… … Universalium
petroleum refining — Introduction conversion of crude oil into useful products. History Distillation of kerosene and naphtha The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… … Universalium
STS-50 — Infobox Space mission mission name = STS 50 insignia = STS 50 patch.svg shuttle = Columbia launch pad = 39A launch = June 25, 1992, 12:12:23 p.m. EDT landing = July 9, 1992, 7:42:27 a.m. EDT, Kennedy Space Center, Runway 33 duration = 13 days, 19 … Wikipedia
Selective catalytic reduction — (SCR) is a means of converting nitrogen oxides, also referred to as chem|NO|x with the aid of a catalyst into diatomic nitrogen, chem|N|2, and water, chem|H|2|O. A gaseous reductant, typically anhydrous ammonia, aqueous ammonia or urea, is added… … Wikipedia
Hard water — is the type of water that has high mineral content (in contrast with soft water ). Hard water minerals primarily consist of calcium (Ca2+), and magnesium (Mg2+) metal cations, and sometimes other dissolved compounds such as bicarbonates and… … Wikipedia
Oxygen concentrator — A home oxygen concentrator in situ in an emphysema patient s house. The model shown is the DeVILBISS LT 4000 … Wikipedia
Oxygen — This article is about the chemical element and its most stable form, O2 or dioxygen. For other forms of this element, see Allotropes of oxygen. For other uses, see Oxygen (disambiguation). nitrogen ← oxygen → fluorine ↑ O ↓ … Wikipedia
Mining in Iran — Industry and Mining from U.S. Central Intelligence Agency map of Iran 1978. Mining in Iran is under developed. Yet the country is one of the most important mineral producers in the world, ranked among 15 major mineral rich countries,[1] holding… … Wikipedia
Oxy-fuel welding and cutting — Oxyacetylene redirects here. For the song, see Cubanate. Side of metal, cut by oxygen propane cutting torch … Wikipedia
Hungary — /hung geuh ree/, n. a republic in central Europe. 9,935,774; 35,926 sq. mi. (93,050 sq. km). Cap.: Budapest. Hungarian, Magyarország. * * * Hungary Introduction Hungary Background: Hungary was part of the polyglot Austro Hungarian Empire, which… … Universalium
Chiller — For other uses, see Chiller (disambiguation). York International water cooled chiller. A chiller is a machine that removes heat from a liquid via a vapor compression or absorption refrigeration cycle. This liquid can then be circulated through a… … Wikipedia