scale-resistant concrete
51Building insulation materials — A selection of insulation materials can aid in building insulation. All of these are based on standard principles of thermal insulation. Materials used to reduce heat transfer by conduction, radiation or convection are employed in varying… …
52art 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… …
53Manhattan Project — This article is about the atomic bomb project. For other uses, see Manhattan Project (disambiguation). Manhattan District The Manhattan Project created the first nuclear bombs. The Trinity test …
54Countertop — A stainless steel countertop Countertop (also counter top, counter, benchtop, (British English) worktop, or (Australian English) kitchen bench) usually refers to a horizontal worksurface in kitchens or other food preparation areas, bathrooms or… …
55masonry — /may seuhn ree/, n., pl. masonries. 1. the craft or occupation of a mason. 2. work constructed by a mason, esp. stonework: the crumbling masonry of ancient walls. 3. (cap.) Freemasonry. [1325 75; ME masonerie < MF maçonnerie. See MASON, ERY] * *… …
56pre-Columbian civilizations — Introduction the aboriginal American Indian (Mesoamerican Indian) cultures that evolved in Meso America (part of Mexico and Central America) and the Andean region (western South America) prior to Spanish exploration and conquest in the 16th …
57KABBALAH — This entry is arranged according to the following outline: introduction general notes terms used for kabbalah the historical development of the kabbalah the early beginnings of mysticism and esotericism apocalyptic esotericism and merkabah… …
58Shed — For other uses, see Shed (disambiguation). A rural shed …
59Nuclear meltdown — Three of the reactors at Fukushima I overheated, causing core meltdowns. This was compounded by hydrogen gas explosions and the venting of contaminated steam which released large amounts of radioactive material into the air.[1] …
60MythBusters (2009 season) — Country of origin Australia United States No. of episodes 23 (includes 3 specials) Broadcast Original channel …
