concrete and lead shield

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• 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

• Concrete Blonde — Origin Los Angeles, CA, USA Genres Alternative rock Years active 1982–1995, 2001–2004, 2010 Labels I.R.S …   Wikipedia

• shield — shielder, n. shieldless, adj. shieldlessly, adv. shieldlessness, n. shieldlike, adj. /sheeld/, n. 1. a broad piece of armor, varying widely in form and size, carried apart from the body, usually on the left arm, as a defense against swords,… …   Universalium

• Lead castle — A lead castle, also called a lead cave or a lead housing, is a structure composed of bricks made of lead. Lead castles are a type of lead shielding and are used to enclose small radioactive sources. They are used during nuclear research and… …   Wikipedia

• shield — [[t]ʃild[/t]] n. 1) her cv a device used as a defense against blows or hurled objects, esp. a broad piece of armor carried on the arm or in the hand 2) a person or thing that guards or defends 3) any of various devices or barriers for protection …   From formal English to slang

• tunnels and underground excavations — ▪ engineering Introduction        Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …   Universalium

• 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

• art conservation and restoration — Maintenance and preservation of works of art, their protection from future damage, deterioration, or neglect, and the repair or renovation of works that have deteriorated or been damaged. Research in art history has relied heavily on 20th and… …   Universalium

• HISTORICAL SURVEY: THE STATE AND ITS ANTECEDENTS (1880–2006) — Introduction It took the new Jewish nation about 70 years to emerge as the State of Israel. The immediate stimulus that initiated the modern return to Zion was the disappointment, in the last quarter of the 19th century, of the expectation that… …   Encyclopedia of Judaism

• Polis and its culture (The) — The polis and its culture Robin Osborne INTRODUCTION ‘We love wisdom without becoming soft’, Thucydides has the Athenian politician Pericles claim, using the verb philosophein.1 Claims to, and respect for, wisdom in archaic Greece were by no… …   History of philosophy

• Sir Gawain and the Green Knight — is a late 14th century Middle English alliterative romance outlining an adventure of Sir Gawain, a knight of King Arthur s Round Table. In the tale, Sir Gawain accepts a challenge from a mysterious warrior who is completely green, from his… …   Wikipedia