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Direct reduction processes can be divided roughly into two categories: gas-based and coal-based. In both cases, the objective of the process is to remove the oxygen contained in various forms of iron ore (sized ore, concentrates, pellets, mill scale, furnace dust, etc.) in order to convert the ore to metallic iron, without melting it (below 1,200 °C (2,190 °F)).
The direct process, also called the direct synthesis, Rochow process, and Müller-Rochow process is the most common technology for preparing organosilicon compounds on an industrial scale. It was first reported independently by Eugene G. Rochow and Richard Müller in the 1940s. [ 1][ 2]
This is a list of articles about prime numbers. A prime number (or prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. By Euclid's theorem, there are an infinite number of prime numbers. Subsets of the prime numbers may be generated with various formulas for primes.
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Walt Disney Animation Studios is an American animation studio headquartered in Burbank, California, [1] the original feature film division of The Walt Disney Company.The studio's films are also often called "Disney Classics" (or "Classic Animated Features" in the case of the films with traditional hand drawn animation), [2] or "Disney Animated Canon".
—Michael Cimino Derived from some of Cimino's personal experiences, The Deer Hunter tells the story of three blue-collar steelworkers, portrayed by Robert De Niro, John Savage and Christopher Walken, who during the Vietnam War volunteer to serve together. Since he had to spend the next several months prepping for the film and scouting for locations, Cimino brought in Deric Washburn to help ...
Since the office was established in 1789, 45 men have served in 46 presidencies. The first president, George Washington, won a unanimous vote of the Electoral College. [ 4] Grover Cleveland served two non-consecutive terms and is therefore counted as the 22nd and 24th president of the United States, giving rise to the discrepancy between the ...
Direct air capture (DAC) is the use of chemical or physical processes to extract carbon dioxide directly from the ambient air. [1] If the extracted CO 2 is then sequestered in safe long-term storage (called direct air carbon capture and sequestration ( DACCS )), the overall process will achieve carbon dioxide removal and be a "negative ...