ash ratio

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• Shvetsov ASh-82 — ASh 82 Preserved Shvetsov ASh 82 at the Prague Aviation Museum, Kbely Type Radial engine Manu …   Wikipedia

• Water-cement ratio — is the ratio of weight of water to the weight of cement used in a concrete mix. It has an important influence on the quality of concrete produced. A lower water cement ratio leads to higher strength and durability, but may make the mix more… …   Wikipedia

• Schleicher ASH 25 — NOTOC The ASH 25 is a two seater high performance Open Class glider manufactured by Alexander Schleicher, originally with a 25 metre wingspan. Designer Martin Heide (the H in the type designation) combined the wing of the World Championship… …   Wikipedia

• Schleicher ASH 26 — NOTOC The ASH 26 is a 18 metre Class glider built of modern fibre reinforced composites. It is manufactured by Alexander Schleicher GmbH Co. The H indicates this is a design of Martin Heide.The ASH 26 has plain flaps, a retractable undercarriage… …   Wikipedia

• Schleicher ASH 30 — NOTOC The ASH 30 is a two seater Open Class glider manufactured by Alexander Schleicher, developed as replacement for ASH 25H. The Mi version will motorised with the 41 kW (56 hp) rotary Diamond Wankel engine, but an unpowered version will also… …   Wikipedia

• Shvetsov ASh-62 — NOTOC The Shvetsov ASh 62 (designated M 62 before 1941) is a nine cylinder, air cooled, radial aircraft engine produced in the Soviet Union. It was a development of the Wright Cyclone that had been built there under licence as the Shvetsov M 25,… …   Wikipedia

• dating — I In geology and archaeology, the process of determining an object s or event s place within a chronological scheme. Scientists may use either relative dating, in which items are sequenced on the basis of stratigraphic clues (see stratigraphy) or …   Universalium

• Permian–Triassic extinction event — …   Wikipedia

• Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium

• star — starless, adj. /stahr/, n., adj., v., starred, starring. n. 1. any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night. 2. Astron. any of the large, self luminous, heavenly bodies, as the sun, Polaris,… …   Universalium

• Concrete — This article is about the construction material. For other uses, see Concrete (disambiguation). Outer view of the Roman Pantheon, still the largest unreinforced solid concrete dome.[1] …   Wikipedia