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Bromochlorodifluoromethane (BCF), also referred to by the code numbers Halon 1211 and Freon 12B1, is a haloalkane with the chemical formula C F 2 Cl Br. It is used for fire suppression, especially for expensive equipment or items that could be damaged by the residue from other types of extinguishers. [ 1 ]
Basalt fiber. Basalt fibers are produced from basalt rocks by melting them and converting the melt into fibers. Basalts are rocks of igneous origin. The main energy consumption for the preparation of basalt raw materials to produce of fibers is made in natural conditions. Basalt fibers are classified into 3 types: Basalt continuous fibers (BCF ...
In polymer chemistry, free-radical polymerization (FRP) is a method of polymerization by which a polymer forms by the successive addition of free-radical building blocks (repeat units). Free radicals can be formed by a number of different mechanisms, usually involving separate initiator molecules .
In the last routine of the floor exercise final, Chiles garnered a score of 13.666, which included a deduction of one tenth of a point for an improper split leap, known as a tour jete full.
The Bond Building is an historic office building located at 1400 New York Avenue, N.W., in downtown Washington, D.C. It was designed by architect George S. Cooper in 1901. The building was constructed by Charles Henry Bond, for an estimated $300,000. [3] A developer bought the building in 1979, and applied for a demolition permit.
Botany, also called plant science (or plant sciences ), plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek word βοτάνη ( botanē) meaning "pasture", "herbs" "grass", or ...
Performance bond. A performance bond, also known as a contract bond, is a surety bond issued by an insurance company or a bank to guarantee satisfactory completion of a project by a contractor. The term is also used to denote a collateral deposit of good faith money, intended to secure a futures contract, commonly known as margin.
Desert Botanical Garden is a 140-acre (57 ha) botanical garden located in Papago Park, at 1201 N. Galvin Parkway in Phoenix, central Arizona.. Founded by the Arizona Cactus and Native Flora Society in 1937 [1] and established at this site in 1939, the garden now has more than 50,000 plants in more than 4,000 taxa, one-third of which are native to the area, including 379 species which are rare ...