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Isogrid is a type of partially hollowed-out structure formed usually from a single metal plate with integral triangular stiffening stringers. It was patented by McDonnell Douglas (now part of Boeing) in 1975. [1] [2] Isogrids are extremely light and stiff. [3]
James Biddle (February 18, 1783 – October 1, 1848), of the Biddle family, brother of financier Nicholas Biddle and nephew of Capt. Nicholas Biddle, was an American commodore. His flagship was USS Columbus .
Megger site in Dover, England, UK. Megger Group Limited (also known as Megger) is a British manufacturing company that manufactures electronic test equipment and measuring instruments for electrical power applications.
A plate heat exchanger is a type of heat exchanger that uses metal plates to transfer heat between two fluids.This has a major advantage over a conventional heat exchanger in that the fluids are exposed to a much larger surface area because the fluids are spread out over the plates.
James G. Marshall was born on August 24, 1869 to Joseph Williams Marshall and Mary Allen Marshall, on the family farm located in Buffalo Run Valley near Bellefonte, Pennsylvania. He was the youngest among 10 siblings, with four brothers and five sisters. [ 2 ]
BUR plates were shorter and thicker than competitor's plates were. This gave BUR plates the advantage of being virtually "unbreakable". Unfortunately, the increased thickness also meant that fewer plates could fit on any given bar. BUR plates were offered only in American pounds; the metric system was never used for any BUR branded product.
After the death of James V of Scotland in December 1542, Cardinal Beaton ordered the keeper of the royal wardrobe John Tennent to give the king's jack of plate to his lawyer Adam Otterburn. [6] In July 1547, James Hamilton, the Regent of Scotland, had a new jack covered with purple taffeta, then changed his mind, choosing purple velvet. [7]
A well-known version of this instrument is the Weissenberg rheogoniometer, in which the movement of the cone is resisted by a thin piece of metal which twists—known as a torsion bar. The known response of the torsion bar and the degree of twist give the shear stress , while the rotational speed and cone dimensions give the shear rate .