Thursday, March 31, 2005


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

Wednesday, March 30, 2005

China, Sui and T'ang periods

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).

Sunday, March 27, 2005


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

Saturday, March 26, 2005

Grub Street

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

Thursday, March 24, 2005

Location Theory

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

Tuesday, March 22, 2005

Balboa, Vasco Núñez De

Spanish conquistador and explorer, who was head of the first stable settlement on the South American continent (1511) and who was the first European to sight the Pacific Ocean (on Sept. 25 [or 27], 1513, from “a peak in Darién”).

Saturday, March 19, 2005


City, seat (1807) of Natchitoches parish, west-central Louisiana, U.S., on Cane River Lake, 68 miles (109 km) southeast of Shreveport. The oldest permanent settlement in the Louisiana Purchase territory, it was founded about 1714 as Fort St. Jean Baptiste by the French-Canadian explorer and soldier Louis Juchereau de Saint-Denis to forestall Spanish occupation of the area and to set up a

Thursday, March 17, 2005


The year 2001 was one of the highest peaks in the roller-coaster career of hard-rock survivors Aerosmith; the group was inducted into the Rock and Roll Hall of Fame and enjoyed the runaway success of its first self-produced album, Just Push Play. Overcoming the legendary excess that had brought its career to a screeching halt in the early 1980s, Aerosmith returned with even greater

Alexander Nevsky, Saint

Russian  Aleksandr Nevsky,  original name  Aleksandr Yaroslavich  prince of Novgorod (1236–52) and of Kiev (1246–52) and grand prince of Vladimir (1252–63), who halted the eastward drive of the Germans and Swedes but collaborated with the Mongols in imposing their rule on Russia. By defeating a Swedish invasion force at the confluence of the Rivers

Wednesday, March 16, 2005


Italian  Arbe,   island in the Adriatic Sea forming the northernmost part of Dalmatia in Croatia. With an area of 35 sq mi (91 sq km), it reaches a maximum altitude of 1,339 ft (408 m) at Mt. Kamenjak and comprises three ridges of limestone. Over 300 freshwater springs provide a valuable water supply to the population of the island—which, in contrast to most of the Adriatic islands, is increasing, in part because

Tuesday, March 15, 2005


The city was brought under regular Chinese administration only in the early 7th century AD. A county was set up there in 640, and its present name, Tsun-i, was given in 642. It remained the seat of Tsun-i hsien (county), but the area did not begin to be developed

Monday, March 14, 2005


A structure for the keeping of captive birds, usually spacious enough for the aviculturist to enter. Aviaries range from small enclosures a metre or so on a side to large flight cages 30 m (100 feet) or more long and as much as 15 m high. Enclosures for birds that fly only little or weakly (e.g., rails, pheasants) are often only one metre high. The private aviary often consists of a room

Sunday, March 13, 2005


Greek god, son of Zeus and Maia; often identified with the Roman Mercury (q.v.) and with Casmilus or Cadmilus, one of the Cabeiri (q.v.). His name is probably derived from herma (see herm), the Greek word for a heap of stones, such as was used in the country to indicate boundaries or as a landmark. The earliest centre of his cult was probably Arcadia, where Mt. Cyllene was reputed to be

Friday, March 11, 2005

Gautier D'arras

An official of Philippe d'Alsace, Count of Flanders, Gautier is named in many charters between

Thursday, March 10, 2005

Euclidean Geometry, Axioms of congruence

Five axioms (see Box


Also called  Samantabhadra-carya-pranidhana  (“Practical Vows of Samantabhadra”), a Mahayana (“Greater Vehicle”) Buddhist text that has also made an important contribution to the Tantric Buddhism of Tibet. Closely related to the Avatamsaka-sutra (“Discourse on the Adornments of the Buddha”) and sometimes considered its final section, the Bhadracarya-pranidhana presents a universe of totally interdependent phenomena

Tuesday, March 08, 2005

Góngora Y Argote, Luis De

The son of a judge, Góngora profited from his father's fine library and from relatives


Temporary market where buyers and sellers gather to transact business. A fair is held at regular intervals, generally at the same location and time of year, and it usually lasts for several days or even weeks. Its primary function is the promotion of trade. Historically, fairs displayed many different kinds of products in specific commodity or industrial groupings.

Monday, March 07, 2005


Nagaland has no early written history, although medieval chronicles of the neighbouring Ahom kingdom of Assam tell of the Naga tribes, their economy, and their customs. The 1816 Myanmar invasion of Assam led to oppressive Myanmar rule from 1819 until the establishment of British rule over Assam in 1826. The advent of British administration, which by 1892 encompassed the whole of Naga territory

Sunday, March 06, 2005

Rowan, Carl

After serving as a communications officer in the navy, he earned a degree in mathematics from Oberlin (Ohio) College (B.A., 1947) and studied journalism at the University

Saturday, March 05, 2005


Formed at the urging of Britain and the United States, the Central Treaty Organization was intended to counter the threat of Soviet

Friday, March 04, 2005


The county has a concave western coastline along the Firth of Clyde

Wednesday, March 02, 2005


Genus of plants in the family Smilacaceae, consisting of about 300 species of woody or herbaceous vines, variously known as catbriers and greenbriers, native to tropical and temperate parts of the world. The stems of many species are covered with prickles; the lower leaves are scalelike; and the leathery upper leaves have untoothed blades with