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In astronomy, the Arcturus moving group or Arcturus stream is a moving group or stellar stream, discovered by Olin J. Eggen (1971), comprising 53 stars moving at 275,000 miles per hour, which includes the nearby bright star Arcturus. It comprises many stars which share similar proper motion and so appear to be physically associated.
Guastavino tile vaulting in the City Hall station of the New York City Subway Guastavino ceiling tiles on the south arcade of the Manhattan Municipal Building. The Guastavino tile arch system is a version of Catalan vault introduced to the United States in 1885 by Spanish architect and builder Rafael Guastavino (1842–1908). [1]
The Catalan vault (Catalan: volta catalana), also called thin-tile vault, [1] Catalan turn, Catalan arch, boveda ceiling (Spanish bóveda 'vault'), or timbrel vault, is a type of low brickwork arch forming a vaulted ceiling that often supports a floor above. It is constructed by laying a first layer of light bricks lengthwise "in space ...
Gothic rib vault ceiling of the Saint-Séverin church in Paris Interior elevation view of a Gothic cathedral, with rib-vaulted roof highlighted. In architecture, a vault (French voûte, from Italian volta) is a self-supporting arched form, usually of stone or brick, serving to cover a space with a ceiling or roof.
The STC results of decoupling in wall and ceiling assemblies varies significantly depending on the framing type, air cavity volume, and decoupling material type. [14] Great care must be taken in each type of decoupled partition construction, as any fastener that becomes mechanically (rigidly) coupled to the framing can undermine the decoupling ...
Vertical, metal furring is applied to the wall to create a channel and receive the siding material. In construction, furring (furring strips) are strips of wood or other material applied to a structure to level or raise the surface, to prevent dampness, to make space for insulation, to level and resurface ceilings or walls, [1] or to increase the beam of a wooden ship.
Assembly: A/S Anti-Skid ASR Airport surveillance radar: ASU Avionics switching unit A/T Autothrottle: Also 'AT' A/THR Autothrust ATA Air Transport Association: ATAG Air Transport Action Group: A coalition of aviation industry experts focusing on sustainable development issues. ATC Air traffic control: ATCC Air traffic control centre ATCO Air ...
According to the Monday, August 22 Huffington Post online video and short article about them they "are thought to be 3.4 billion years old. Some believe that the organisms could also have lived on Mars , as at the time when they lived there was very little oxygen on Earth , and Mars was known to have had both the water and sulphur necessary to ...