Metals are cut, shaped, bored, bent, and formed by tools and machines operated manually or, increasingly, under the control of computers programmed to guide the necessary operations consistently and with greater precision than can normally be provided by humans. The parallels for electrical and electronic fabrication are robotic tools for insertion of components
Port city and capital of Málaga provincia, in the comunidad autónoma (“autonomous community”) of Andalusia, southern Spain. It lies along a wide bay of the Mediterranean Sea at the mouth of the Guadalmedina River in the centre of the Costa del Sol. It was founded by the Phoenicians in the 12th century BC, conquered successively by the Romans and the Visigoths, and taken by the
Any drug that, when added to blood, prevents it from clotting. Anticoagulants achieve their effect by suppressing the synthesis or function of various clotting factors that are normally present in the blood. Such drugs are often used to prevent blood clots (thrombi) from forming in the veins or arteries. Anticoagulants are generally of two types. One type is heparin
The best general account of Chinese relations with its northern neighbours in the steppes is Rene Grousset, The Empire of the Steppes (1970; originally published in French, 1939; 4th French ed., 1960). On Chinese overseas trade and relations with Southeast Asia, see Gungwu Wang, The Nanhai Trade: A Study of the Early History of Chinese Trade in the South China Sea (1958).
Tyre, built on an island and on the neighbouring mainland, was probably originally founded as a colony of Sidon. Mentioned in Egyptian records of the
The world of literary hacks, or mediocre, needy writers who write for hire. The term originated in the 18th century. According to Dr. Samuel Johnson's Dictionary, Grub Street was “originally the name of a street in Moorfields in London, much inhabited by writers of small histories, dictionaries, and temporary poems; whence any mean production is called grubstreet.” The street
In economics and geography, theory concerned with the geographic location of economic activity; it has become an integral part of economic geography, regional science, and spatial economics. Location theory addresses the questions of what economic activities are located where and why. The location of economic activities can be determined on a broad level such
