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Yttrium barium copper oxide (YBCO) is a family of crystalline chemical compounds that display high-temperature superconductivity; it includes the first material ever discovered to become superconducting above the boiling point of liquid nitrogen [77 K (−196.2 °C; −321.1 °F)] at about 93 K (−180.2 °C; −292.3 °F).
The uptake and loss of oxygen are reversible in YBa 2 Cu 3 O 7−x. A fully oxygenated orthorhombic YBa 2 Cu 3 O 7−x sample can be transformed into tetragonal YBa 2 Cu 3 O 6 by heating in a vacuum at temperature above 973 K (700 °C). [68] The preparation of Bi-, Tl- and Hg-based high-T c superconductors is more difficult than the YBCO ...
Bathymetric map of the Columbia River mouth: isobaths at five-foot (1.5 m) intervals, 15–310 feet (4.6–94.5 m). Sandbars in yellow. The Columbia Bar is a system of bars and shoals at the mouth of the Columbia River spanning the U.S. states of Oregon and Washington.
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Digital River, Inc. is a privately held company headquartered in Minnetonka, Minnesota [5] that provides global e-commerce, payments and marketing services. In 2013, Digital River reported having processed more than US$ 30 billion in online transactions.
In computational complexity theory, the complexity class EXPTIME (sometimes called EXP or DEXPTIME) is the set of all decision problems that are solvable by a deterministic Turing machine in exponential time, i.e., in O(2 p(n)) time, where p(n) is a polynomial function of n.
Friend 2) is a 2013 South Korean neo-noir action film about three generations of gangsters, starring Yu Oh-seong, Joo Jin-mo, and Kim Woo-bin. [2] [3] [4] It is the sequel to the 2001 box-office hit Friend, also directed by Kwak Kyung-taek. [5] [6] [7] Friend: The Great Legacy was released in theaters on 14 November 2013. [8]
Latna Saga: The Survival Sword King (Korean: 이계 검왕 생존기, romanized: Igye Geom-Wang Saengjongi, Japanese: 異世界剣王生存記, romanized: Isekai Ken-Ō Seizon-Ki) is a South Korean web novel written by Kyungbae Lim. It was serialized via Kakao's digital comic and fiction platform KakaoPage from