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urea-formaldehyde resin ... Ust-Ordynsky

urea-formaldehyde resin: any of a class of substances belonging to the family of organic polymers, prepared by heating urea and formaldehyde in the presence of mild alkalies, such as pyridine or ammonia. ...
urease: an enzyme that catalyzes the hydrolysis of urea, forming ammonia and carbon dioxide. Found in large quantities in jack beans, soybeans, and other plant seeds, it also occurs in some ...
uremia: toxic effects of abnormally high concentrations of nitrogenous substances in the blood as a result of the kidney's failure to expel these waste products by way of the urine. The ...
urena: plant of the family Malvaceae and its fibre, one of the bast fibre (q.v.) group. The plant, probably of Old World origin, grows wild in tropical and subtropical areas throughout ...
ureter: one of two ducts that transmit urine from each kidney to the bladder. Each ureter is a narrow tube that is about 12 inches (30 cm) long. A ureter has ...
urethra: duct that transmits urine from the bladder to the exterior of the body during urination. The urethra is held closed by the urethral sphincter, a muscular structure that helps keep ...
urethral gland: in male placental mammals, any of the glands that branch off the internal wall of the urethra, the passageway for both urine and semen. The glands contribute mucus to the ...
urethritis: infection and inflammation of the urethra, the channel for passage of urine from the urinary bladder to the outside. Urethritis is more frequent in males than in females. Its causes ...
Urewera National Park: park in northeastern North Island, New Zealand. Established in 1954, it has an area of 821 square miles (2,127 square km) and has the largest expanse of indigenous forest in ...
Urey, Harold C.: American scientist awarded the Nobel Prize for Chemistry in 1934 for his discovery of the heavy form of hydrogen known as deuterium. He was a key figure in the development ...
Urfe, Honore d': French author whose pastoral romance L'Astree (1607-27; Astrea) was extremely popular in the 17th century and inspired many later writers.
Urgeirica: uranium mine and village, Viseu distrito ("district"), north-central Portugal. It lies south of Viseu town near the Mondego River. Although the deposits are small, the uranium extracted there in the ...
Urgench: city, south-central Uzbekistan. The city lies along the Shavat Canal and the Amu Darya (river). Urgench was founded when the inhabitants of the ancient city of Urgench, near present-day Kunya-Urgench, ...
Urhobo: a people of the northwestern part of the Niger River delta in extreme southern Nigeria. They speak a language of the Kwa branch of the Niger-Congo language family. The term ...
Uri: canton, central Switzerland, traversed by the steep-sided valleys of the Reuss River and its tributaries. About one-half of the canton's area is reckoned as productive. Forests occupy part of the ...
Uriburu, Jose Evaristo: Argentine statesman who was his country's president in 1895-98.
Uriburu, Jose Felix: Argentine soldier and statesman who led the military coup that in September 1930 overthrew the liberal regime of President Hipolito Irigoyen and restored the old landed oligarchy to the political ...
uric acid: a compound belonging to the purine group, and the chief form in which nitrogen, resulting from the breakdown of protein during digestion, is excreted by reptiles and birds. Small quantities ...
Uriel: in the Apocrypha, a leading angel, sometimes ranked as an archangel with Michael, Gabriel, and Raphael. Because his name in Hebrew means "fire of God," or "light of God," he ...
urinalysis: laboratory examination of a sample of urine to obtain clinical information. Most of the substances normally excreted in the urine are metabolic products dissolved or suspended in water. A deviation ...
urinary bladder: in most vertebrates, except birds, organ for the temporary storage of urine from the kidneys, connected to the kidneys by means of tubular structures called ureters. A urinary bladder is ...
urinary tract obstruction: blockage or constriction of the excretory ducts, causing urine to be dammed up in the kidneys (hydronephrosis). Obstructions in the urinary tract cause distension of the walls of the bladder, ...
urination: the process of excreting urine from the urinary bladder. Nerve centres for the control of urination are located in the spinal cord, the brainstem, and the cerebral cortex (the outer ...
urine: liquid or semisolid solution of metabolic wastes and certain other, often toxic, substances that the excretory organs withdraw from the circulatory fluids and expel from the body. The composition of ...
Uris, Leon: American novelist known for panoramic, action-filled works such as the World War II novel Battle Cry (1953) and Exodus (1958), which deals with the ...
Urmia, Lake: lake in northwestern Iran that is the largest lake in the Middle East. It covers an area that varies from 2,000 to 2,300 square miles (5,200 to 6,000 square km). ...
urn moss: any plant of the genus Physcomitrium (order Bryales), characterized by urn-shaped or top-shaped capsules (spore cases) with lobed, hoodlike coverings. Fewer than 10 species are native to North America. The ...
Urnfield culture: a Late Bronze Age culture of Europe, so called because of the custom of placing the cremated bones of the dead in urns. The Urnfield culture first appeared in east-central ...
urogenital malformation: any defect in the organs and tissues responsible for the formation and excretion of urine or in the sex organs or in both. Some of the more important conditions include: ...
urogenital system: in vertebrates, the organs concerned with reproduction and urinary excretion. Although their functions are unrelated, the structures involved in excretion and reproduction are morphologically associated and often use common ducts. ...
urography: X-ray examination of any part of the urinary tract after introduction of a radiopaque substance (often an organic iodine derivative) that casts an X-ray shadow. This contrast fluid, which passes ...
urology: medical specialty involving the diagnosis and treatment of diseases and disorders of the urinary tract and of the male reproductive organs. (The urinary tract consists of the kidneys, the bladder, ...
urostomy: the surgical formation of a new channel for urine and liquid wastes following the removal of the bladder or ureters. See ostomy.
Urquhart, Sir Thomas: author of one of the most original and vivid translations from any foreign language into English. His works are marked by eccentricity of both language and method.
Urquiza, Justo Jose de: soldier and statesman who overthrew the powerful Argentine dictator Juan Manuel de Rosas and laid the constitutional foundations of modern Argentina.
Urraca: queen of Leon and Castile from 1109 to 1126, daughter of Alfonso VI.
Ursa Major: in astronomy, a constellation of the Northern Hemisphere, at about 10 hours 40 minutes right ascension (the coordinate on the celestial sphere analogous to longitude on the Earth) and 56° ...
Ursa Minor: in astronomy, a constellation of the northern sky, seven of whose stars outline the Little Dipper. Polaris (Alpha Ursae Minoris), at the end of the Little Dipper's handle, marks (roughly) ...
Ursins, Marie-Anne de la Tremoille, princesse des: (princess of the) French noblewoman who exercised great influence in the government of Spain between 1701 and 1714, during the period of the War of the Spanish Succession.
Ursinus: antipope from 366 to 367.
Urso, Camilla: American musician who was recognized as one of the finest violinists of the latter half of the 19th century.
Ursula, Saint: legendary leader of 11 or 11,000 virgins reputedly martyred at Cologne, now in Germany, by the Huns, 4th-century nomadic invaders of southeastern Europe. The story is based on a 4th- ...
Ursuline: a Roman Catholic religious order of women founded at Brescia, Italy, in 1535, by St. Angela Merici, as the first institute for women dedicated exclusively to the education of girls. ...
Urticaceae: the nettle family comprising about 45 genera of herbs, shrubs, small trees, and a few vines, distributed primarily in tropical regions. The family is typical of the nettle order (Urticales). ...
Urticales: nettle order of dicotyledonous flowering plants, the largest order in the subclass Hamamelidae. The order includes a diversity of plant types that range from small herbaceous species to large trees. ...
Uruapan: city, west-central Michoacan estado ("state"), west-central Mexico. Founded in 1533, Uruapan (from a Tarascan Indian term meaning "where the flowers abound") is famous for its Spanish-colonial atmosphere and colourful lacquerware ...
Urubamba River: river in the Amazon drainage system, rising in the Andes of southern Peru, near the border between Cuzco and Puno departamentos. It flows for about 450 miles (725 km) to ...
Uruguaiana: city, western Rio Grande do Sul estado (state), southern Brazil. It lies along the Uruguay River, across the bridge from the town of Paso de los Libres, ...
Uruguay: country located on the southeastern coast of South America. The second smallest nation on the continent, Uruguay has long been overshadowed politically and economically by the adjacent republics of Brazil ...
Uruguay River: river in southern South America that rises in the coastal range of southern Brazil. Its chief headstream, the Pelotas River, rises just 40 miles (64 km) from the Atlantic coast ...
Urumchi: city in the Uighur Autonomous Region of Sinkiang, northwestern China. Urumchi (Mongolian: "Fine Pasture") is the capital of the autonomous region. Situated in a fertile belt of oases along the ...
Usa: city, Oita ken (prefecture), northern Kyushu, Japan; it lies 24 miles (39 km) northwest of the prefectural capital Oita. The city developed around the site of the first and most ...
USAir Group, Inc.: holding company for the American airline incorporated on March 5, 1937, as All American Aviation, Inc.; the airline was renamed All American Airways, Inc., in 1948, Allegheny Airlines, Inc., in ...
Usak: city in the interior of western Turkey, at an elevation of 2,976 feet (907 m) above sea level. Situated in a region that was once part of the Hittite empire, ...
Usakligil, Halit Ziya: writer who is considered the first true exponent in Turkey of the novel in its contemporary European form.
use: in medieval English property law, the right of one person to take the profits of land belonging to another. It involved at least two and usually three persons. One man ...
use tax: levy on the use or possession of a commodity. Under the principle that the taxpayer should pay according to the benefits received from public services, a use tax is often ...
Userkaf: first king of the 5th dynasty of Egypt (c. 2465-c. 2325 BC) who elevated the cult of Re, god of the sun, to unprecedented importance.
ushabti figure: any of the small statuettes made of wood, stone, or faience that are often found in large numbers in ancient Egyptian tombs. The figures range in height from 4 to ...
Ushak carpet: floor covering handwoven in the city of Usak (Ushak), Turkey. By the 16th century the principal manufacture of large commercial carpets in Ottoman Turkey had been established at Usak, which ...
ushpizin: (Aramaic: "visitors"), according to the Jewish Kabbalistic book the Sefer ha-zohar ("Book of Splendour"), seven ancient worthies who take turns visiting the homes of all pious Jews to share their ...
Ushuaia: city, capital and port of Tierra del Fuego provincia, Argentina, on the Beagle Channel. It lies on the main island of Tierra del Fuego Archipelago at the ...
Usk: town, present and historic county of Monmouthshire, Wales, lying along the River Usk 20 miles (32 km) from its Bristol Channel mouth. The town was settled first by Celts and ...
Uskudar: city, northwestern, Turkey. It lies at the foot of the Bulgurlu Hills on the Asiatic side of the Bosporus Strait opposite Istanbul. Known as Chrysopolis in ancient times, it was ...
Usman dan Fodio: Fulani mystic, philosopher, and revolutionary reformer who, in a jihad (holy war) between 1804 and 1808, created a new Muslim state, the Fulani empire, in what is now northern Nigeria.
Usnisavijaya: popular Buddhist goddess in Nepal, Tibet, and Mongolia. Her name in Sanskrit means "victorious goddess of the usnisa," the last-named object being the protuberance on the top of the Buddha's ...
Usolye-Sibirskoye: city, Irkutsk oblast (province), east-central Russia. It lies along the Angara River and the Trans-Siberian Railroad. The city is an old centre of salt production that continues as a major ...
Uspensky, Gleb Ivanovich: Russian intellectual and writer whose realistic portrayals of peasant life did much to correct the prevalent romantic view of the Russian agricultural worker.
Ussachevsky, Vladimir: Russian-born American composer known for his experiments with music for the tape recorder, often combined with live sound.
Ussher, James: Anglo-Irish prelate of the Anglican church who was memorable for his activity in religious politics and for his work on patristic texts, especially the chronology of the Old Testament.
Ussuri River: northward-flowing tributary of the Amur River that for a considerable distance forms the boundary between China (Heilungkiang province) and Russia (Siberia). The Ussuri is formed by the confluence of the ...
Ussuriysk: city, Primorsky kray (region), far eastern Russia. It lies about 50 miles (80 km) north of Vladivostok along the Trans-Siberian Railroad at the junction with a line to Harbin in ...
Ust-Ilimsk: city and administrative centre of Ust-Ilimsk rayon (sector), Irkutsk oblast (province), south-central Russia. It became a city in 1973 in connection with the building of the nearby Ust-Ilimsk dam and ...
Ust-Kamenogorsk: city, eastern Kazakstan. It lies in the foothills of the Rudnyy Altai Mountains and at the junction of the Ulba and Irtysh rivers. Founded as a Russian fort in 1720, ...
Ust-Orda Buryat: autonomous okrug (district) in Irkutsk oblast (province), east-central Russia. It lies west of Lake Baikal and extends across the Angara River. The okrug was created in 1937. Its plateau relief ...
Ust-Ordynsky: township and capital, Irkutsk oblast ("region"), eastern Siberia, Russia. It lies on the Kuda River and on the road from Irkutsk to Kachug, west of Lake Baikal. It is a ...