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Pork cycle. A schematic diagram of the pork cycle. In economics, the term pork cycle, hog cycle, or cattle cycle [1] describes the phenomenon of cyclical fluctuations of supply and prices in livestock markets. It was first observed in 1925 in pig markets in the US by Mordecai Ezekiel and in Europe in 1927 by the German scholar Arthur Hanau [ de].
CentOS. CentOS ( / ˈsɛntɒs /, from Community Enterprise Operating System; also known as CentOS Linux) [5] [6] is a discontinued Linux distribution that provided a free and open-source community-supported computing platform, functionally compatible with its upstream source, Red Hat Enterprise Linux (RHEL).
The European emission standards are vehicle emission standards for pollution from the use of new land surface vehicles sold in the European Union and European Economic Area member states and the United Kingdom, and ships in EU waters. [1] [2] The standards are defined in a series of European Union directives staging the progressive introduction ...
Overview. The first locomotives of the 2-6-6-2 wheel arrangement were built in 1906 by the Great Northern Railway to permit longer trains on their heavily graded line over the Cascade Mountains. [5] They were a refinement of the first North American Mallets, 0-6-6-0 engines built for the Baltimore & Ohio in 1904, with leading and trailing ...
Quaternary glaciation. Extent of maximum glaciation (in black) in the Northern Hemisphere during the Pleistocene. The formation of 3 to 4 km (1.9 to 2.5 mi) thick ice sheets equate to a global sea level drop of about 120 m (390 ft) The Quaternary glaciation, also known as the Pleistocene glaciation, is an alternating series of glacial and ...
2-6-0. Under the Whyte notation for the classification of steam locomotives, 2-6-0 represents the wheel arrangement of two leading wheels on one axle, usually in a leading truck, six powered and coupled driving wheels on three axles and no trailing wheels. This arrangement is commonly called a Mogul. [1]
Homogeneous charge compression ignition. Homogeneous Charge Compression Ignition ( HCCI) is a form of internal combustion in which well-mixed fuel and oxidizer (typically air) are compressed to the point of auto-ignition. As in other forms of combustion, this exothermic reaction produces heat that can be transformed into work in a heat engine .
Arabian oryx. The Arabian oryx or white oryx ( Oryx leucoryx) is a medium-sized antelope with a distinct shoulder bump, long, straight horns, and a tufted tail. [2] It is a bovid, and the smallest member of the genus Oryx, native to desert and steppe areas of the Arabian Peninsula.