narrow cord of tissue that connects a developing embryo, or fetus, with the placenta (the extra-embryonic tissues responsible for providing nourishment and other life-sustaining functions). In the human fetus, the ... [5 Related Articles]
(from the article "human cardiovascular system") In the fetus, oxygenated blood is carried from the placenta to the fetus by the umbilical vein. It then passes to the inferior vena cava of the fetus by way ...
(from the article "fungus") ...in colour; most are nitrophilus; apothecia may be lecanorine; thallus may be foliose; example genera include Candelaria and Candelariella.Forms ...
(from the article "ear, human") When the tympanic membrane absorbs sound waves, its central portion, the umbo, vibrates as a stiff cone, bending inward and outward. The greater the force of the sound waves, the ...
that part of a shadow in which all light from a given source is excluded. The shadow from a point source of illumination is essentially all umbra, but that from ... [1 Related Articles]
(from the article "Valtellina") ...Alps (south) and is traversed by good roads over four well-marked Alpine passes: the Stelvio (9,042 feet [2,756 m]), the Bernina (7,621 feet [2,323 m]), the Aprica (3,858 feet [1,176 ...
Spanish writer was known for his incisive wit and use of both classical language and contemporary slang in work that included magazine essays, newspaper columns, and more than 80 books. ... [1 Related Articles]
a portable, hand-held device that is used for protection against rain and sunlight. The modern umbrella consists of a circular fabric or plastic screen stretched over hinged ribs that radiate ...
(from the article "Performing Arts") Chicago's Umbrella Music, which had offered weekly shows at several locations, held an international festival in November. (Chicago's jazz scene, like New York's, suffered from high rents, and the Jazz ...
(from the article "umbrella plant") any of several unrelated but similarly leaved plants. Cyperus alternifolius (family Cyperaceae), also called umbrella palm and umbrella sedge, is widely cultivated in water gardens and as a potted plant. ...
(Sciadopitys verticillata), coniferous evergreen tree native to Japan, the only member of the umbrella pine family (Sciadopityaceae). Historically, this genus was classified variously in Cupressaceae or Taxodiaceae, but subsequent studies ... [1 Related Articles]
any of several unrelated but similarly leaved plants. Cyperus alternifolius (family Cyperaceae), also called umbrella palm and umbrella sedge, is widely cultivated in water gardens and as a potted plant. ...
(from the article "tent") ...to accommodate straight, vertical walls beneath the slope of the pyramid; the Baker tent, which is a rectangular fabric lean-to with an open front protected by a projecting horizontal flap; ...
any of three species of cotingas (family Cotingidae, order Passeriformes) of tropical American forests. They are notable for their unique, umbrella-like crest and for the pendant suspended from the throat, ...
ancient pre-Etruscan people who gradually concentrated in Umbria (in central Italy) in response to Etruscan and Gallic pressure. By about 400 BC the inhabitants of this area spoke an Indo-European ... [1 Related Articles]
region, central Italy, including the provinces of Perugia and Terni. It lies roughly equidistant between Rome (south) and Florence (north). The modern region takes its name from the Umbria of ... [1 Related Articles]
one of the ancient Italic languages closely related to Oscan and Volscian and more distantly related to Latin and Faliscan. Umbrian was spoken in central Italy, probably only in the ... [4 Related Articles]
(from the article "Apennine Range") Starting from the north, the main subdivisions of the Apennines are the Tuscan-Emilian Apennines, with a maximum height of 7,103 feet at Mount Cimone; the Umbrian-Marchigian Apennines, with their maximum ...
third nearest of the five major moons of Uranus and the one having the darkest and oldest surface of the group. Its discovery is attributed to the English astronomer William ... [2 Related Articles]
one of the 30 soil groups in the classification system of the Food and Agriculture Organization (FAO). Umbrisols are characterized by a surface layer that is rich in humus but ...
(from the article "Swaziland") A five-year period of chastity imposed on young Swazi women in 2000 ended during the year. This cultural rite-known as umcwasho after the tasseled headgear worn by women to indicate ...
town and capital of Vasterbotten lan (county), northeastern Sweden. It lies on the left bank of the Umea River near the Gulf of Bothnia. It has long been an educational ...
Western-style Japanese painter whose vibrant colours, dynamic brushstrokes, and liberated spirit had a strong impact on young Japanese painters. [1 Related Articles]
Japanese-born actress was a nightclub singer in Japan before moving in 1955 to the U.S., where she signed a record contract and became a regular performer on Arthur Godfrey and ... [1 Related Articles]
wild animal sanctuary in northern KwaZulu/Natal province, South Africa. The reserve lies southwest of the Hluhluwe Game Reserve, about 35 miles (56 km) inland from the Indian Ocean. It was ...
(from the article "Swaziland") ...a first-fruits ceremony, but, spread over six days, it is a much more complex ritual of renewing and strengthening the kingship and the nation, with songs and dances used only ...
boat used by the Greenland and later by the Alaskan Eskimos for transport. It was called the woman's boat, as opposed to the kayak, the men's hunting and fishing boat. [1 Related Articles]
(from the article "Arctic") Among other groups there was no formal position of chief, the closest to an exception being the umialik of the Inupiat. In addition to owning the boat used for whaling, ...
(from the article "Meghalaya") ...of the plateau, overlooking the Bangladesh lowlands, is particularly steep. Many rivers and streams flow out of the plateau, creating deep, narrow, steep-sided valleys; the most important is the Umiam-Barapani, ...
(from the article "South Africa") ...of their white sympathizers came to the conclusion that apartheid could never be overcome by peaceful means alone. PAC established an armed wing called Poqo, and the ANC set up ...
(from the article "linguistics") ...first consonant to the second consonant of the cluster in place of articulation (cf. Latin nocte(m), octo). Assimilation is also responsible for the phenomenon referred to as umlaut in the ...
urban area, southeastern KwaZulu-Natal province, South Africa. It lies along the south bank of the Mlazi (Umlazi) River and adjoins the city of Durban on the southwest. The present site ...
(from the article "Bahrain") ...causeways that have facilitated residential and industrial development; other islands in the group are Nabi Salih, Al-Muhammadiyyah (Umm al-Sabban), Umm al-Na'san (linked by the King Fahd Causeway), and Jiddah. The ...
constituent emirate of the United Arab Emirates, located on the Arabian Peninsula facing the Persian Gulf. The second smallest in area and the least populous of the federation's seven emirates, ... [1 Related Articles]
(from the article "Umm al-Qaywayn") ...a straight-line distance; actually, Umm al-Qaywayn's coastline is much longer and is extremely irregular, with numerous small inlets, spits, and offshore islets. On one of these spits is the town ...
(from the article "United Arab Emirates") ...are held by an ADNOC subsidiary, Abu Dhabi Marine Operating Company (ADMA-OPCO), which is partially owned by British, French, and Japanese interests. One of the main offshore fields is located ...
(from the article "Arabia") ...more than 800 feet are reached and sand ridges extend for more than 30 miles, with salt flats as the usual floor in between. In the east, along the Oman ...
(from the article "Muhammad") ...first son, Qasim, that one of the names of the Prophet, Abu' al-Qasim ("the Father of Qasim"), derives. She also bore him four daughters, Zaynab, Ruqayyah, Umm Kulthum, and Fatimah. ...
Egyptian singer, who mesmerized Arab audiences from the Persian Gulf to Morocco for half a century. She was one of the most famous Arab singers and public personalities in the ... [3 Related Articles]
(from the article "Sumer") ...around Anatolia, arriving in Sumer about 3300 BC. By the 3rd millennium BC the country was the site of at least 12 separate city-states: Kish, Erech, Ur, Sippar, Akshak, Larak, ...
(from the article "Tanzania") ...of the People's Republic of Zanzibar and Pemba. Sheikh Abdulla Kassim Hanga was appointed prime minister, and Abdul Rahman Mohammed ("Babu"), leader of the new left-wing Umma (The Masses) Party ...
(from the article "Islamic world") ...gave them no special status. Yet under Muhammad's leadership they developed a social organization that could absorb or challenge everyone around them. They became Muhammad's ummah ("community") because they had ...
(from the article "Sudan, history of the") ...won control of the Congress and organized the Ashiqqa' (Brothers), the first genuine political party in the Sudan. Seeing the initiative pass to the militants, the moderates formed the Ummah ...
(from the article "Eskimo") One of the oldest known Eskimo archaeological sites was found on Saglek Bay, Labrador, and dates to approximately 3,800 years ago. Another was found on Umnak Island in the Aleutians, ...
(from the article "South Africa") ...as an important staple, often in the form of a porridge known as mealie pap. A dish made from broken dried corn kernels, sugar beans, butter, onions, potatoes, chiles, and ...
river, tributary of the Zambezi River in north-central Zimbabwe. It has its source in the Daramumbe Range on the main watershed north of Chivhu. Flowing northwest for 325 miles (520 ...
(from the article "Malaysia") ...victory led the courts to declare UMNO illegal because it had failed to register properly. Mahathir was able to outmaneuver his opponents, however, by dissolving UMNO and forming a new ...
(from the article "Klem, Bill") American professional baseball umpire of the National League who is considered by many the greatest umpire of all time. Klem is credited with the introduction of hand and arm signals ...
the "minor pilgrimage" undertaken by Muslims whenever they enter Mecca. It is also meritorious, though optional, for Muslims residing in Mecca. Its similarity to the major and obligatory Islamic pilgrimage ... [1 Related Articles]
(from the article "African music") ...container. Apart from adapted shooting bows, more specialized types of musical bows are widespread. Most are sounded by plucking or striking the string, but the Xhosa umrubhe ...
town, Eastern Cape province, South Africa. It was the capital of Transkei, a nominally independent but not internationally recognized southern African republic that was reincorporated into South Africa in 1994. ...
(from the article "African music") ...and elsewhere. End-blown notched flutes, with a U- or V-shaped embouchure, either with or without finger holes, are widely distributed across the continent. The long Zulu umtshingo ...
(from the article "pre-Columbian civilizations") Priests resided at all important shrines and temples. A chronicler suggests that a priest's title was umu, but in usage his title was geared to his functions as diviner of ...
town, capital of Abia state, southern Nigeria. It lies along the railroad from Port Harcourt to Enugu. It is an agricultural market centre and (since 1916) collecting point on the ...
(from the article "Burundi") ...the village council, have lost their force, weakened by political chaos and the wholesale displacement of populations. Once widely celebrated events include the annual sorghum festival (umuganuro), the occasion for ...
(from the article "Aydin Dynasty") ...c. 1308-34) founded the dynasty in territories he conquered in the Aegean region, including Birgi, Ayasoluk (modern Selcuk, Turkey), Tyre, and Izmir. His son and successor, Umur Bey (Umur I; ...
mountain range in northern Zimbabwe, extending about 100 miles (160 km) north from the Hunyani River and rising to a high point of 5,748 feet (1,752 m). The range forms ...
(from the article "animal behaviour") ...significant to itself and at such times that responses to such stimuli are relevant. This simpler world that actually falls within the animal's perception at any particular moment is termed ...
(from the article "South Asian arts") ...dynasty, appears to have been the first to develop the bhumija type of sikhara (10th century). The finest and most representative group of these structures is at Un. Though, unfortunately, ...
(from the article "The Environment") In early August the UN General Assembly held its first-ever plenary session on climate, and at the end of the month a preparatory meeting was held for the UN Climate ...
(from the article "Denmark") ...a "misanthropic and blatantly nationalistic" immigration policy. Denmark drew criticism from international bodies, notably the European Commission against Racism and Intolerance and the UN Committee on the Elimination of Racial ...
(from the article "Golan Heights") A disengagement agreement between Israel and Syria, signed following the Arab-Israeli War of 1973, established a United Nations buffer zone in the Golan Heights, monitored by a UN Disengagement Observer ...
(from the article "East Timor") On August 30 former rebel leader Maj. Alfredo Reinado and at least 50 other prisoners escaped from jail. Just days earlier the UN had authorized the creation of a new ...
(from the article "United Nations") ...the UN Integrated Mission in East Timor (UNMIT), to facilitate postconflict peacebuilding. The UN mission in Sierra Leone was terminated at the end of 2005 and was replaced on Jan. ...
(from the article "Congo, Democratic Republic of the") ...end by the intervention of the UN and the EU. Bemba took refuge in the South African embassy, but he agreed to seek temporary exile in Portugal after Kabila accused ...
(from the article "Iraq") The Security Council established a UN Special Commission (UNSCOM) to inspect and verify that Iraq was complying with the ban on WMD. By mid-1991, however, it was becoming clear that ...
(from the article "Haiti") Also fueling optimism was the government's success, supported by the UN Stabilization Mission in Haiti (MINUSTAH), in confronting and largely eliminating the gang violence and kidnapping that early in the ...
(from the article "Architecture") One of the remarkable buildings of the year was the Mercedes-Benz Museum in Stuttgart, Ger. The building, designed by UN Studio of Amsterdam, was a stack of spiraling ramps and ...
city, southwestern Himachal Pradesh state, northern India. It lies along the Soan River at an elevation of 1,815 feet (550 m), about 60 miles (95 km) northwest of Simla, the ...
(from the article "Bosnia and Herzegovina") The principal rivers are the Sava, a tributary of the Danube, which forms the northern boundary with Croatia; the Bosna, Vrbas, and Una, which flow north and empty into the ...
American publication, founded by Paulina W. Davis in 1853, that was widely recognized as the first periodical of the women's rights movement. Though several similar journals had appeared the previous ...
(from the article "Health and Disease") An end-of-the-year report by the Joint United Nations Programme on HIV/AIDS (UNAIDS) and the World Health Organization (WHO) painted a detailed picture of the epidemic. The number of people who ...
segments of the Blue Ridge and Appalachian mountain systems in the southeastern United States. They extend from southwestern Virginia along the Tennessee-North Carolina border into northern Georgia. The main ridges ... [1 Related Articles]
(from the article "Alaska") ...long Aleutian chain that separates the North Pacific from the Bering Sea. The chain includes 14 large islands, 55 significant but smaller ones, and numerous islets. The largest are Unimak, ...
(from the article "Aleutian Islands") The oldest and largest permanent settlement is that of Unalaska (Dutch Harbor) on Unalaska Island, where Russians built a village in the 1770s. Unalaska is the former headquarters of a ...
French literary movement based on the psychological concept of group consciousness and collective emotion and the need for the poet to merge with this transcendent consciousness. Founded by Jules Romains ... [1 Related Articles]
(from the article "phase") ...exist stably at this pressure and temperature. All phases in Figure 1 have the same composition-that of silicon dioxide, SiO2. The diagram is a representation of a one-component (unary) system, ...
last king of the 5th dynasty (c. 2465-c. 2325 BCE) of ancient Egypt and the first pharaoh to inscribe the interior of his pyramid at Saqqarah with religious and magical ... [3 Related Articles]
(from the article "four-colour map problem") ...of Illinois, directed by Kenneth Appel and Wolfgang Haken, after four years of unprecedented synthesis of computer search and theoretical reasoning. Appel and Haken created a catalog of 1,936 "unavoidable" ...
(from the article "Follen, Adolf Ludwig") ...Expelled for his political views in 1815, he went to Heidelberg, where he was among the founders of the political student association Teutonia. With his brother, Karl, he was also ...
(from the article "Nobel Prizes") In the course of studying the function of specific genes in C. elegans, Fire and Mello sought to block the activity of the gene unc-22, the genetic code for an ...
(from the article "Rubiaceae") ...Cinchona species; coffee, from the seeds of Coffea species; ipecac, obtained from the roots of Psychotria ipecacuanha; and gambier, a substance that is used in tanning, from Uncaria gambir. Some ...
(from the article "Mohegan") ...time of the first European settlement of New England early in the 17th century, the Mohegan and the Pequot tribes were ruled jointly by the Pequot chief, Sassacus; later a ...
statement, articulated (1927) by the German physicist Werner Heisenberg, that the position and the velocity of an object cannot both be measured exactly, at the same time, even in theory. ... [11 Related Articles]
(from the article "measurement system") ...in terms of these equivalents, the digit (digitus), or 116 foot, was 18.5 mm (0.73 inch); the inch (uncia or pollicus), ...
(from the article "libra") ...The abbreviation lb for pound is derived from libra. One-twelfth of the libra, the Roman uncia, is the ancestor of the ...
in calligraphy, ancient majuscular book hand characterized by simple, rounded strokes. It apparently originated in the 2nd century AD when the codex form of book developed along with the growing ... [8 Related Articles]
(from the article "bird") ...vertebral rib articulating with the vertebra and with the ventral sternal rib, which in turn articulates with the breastbone (sternum). Each vertebral rib bears a flat, backward-pointing spur, the uncinate ...
(from the article "avunculate") ...her sons, that prevails in many societies. The term is derived from the Latin avunculus, meaning "uncle." It typically involves for the maternal uncle a measure of ...
(from the article "Harris, Joel Chandler") ...inspired by his reading of William Owens' work on black folklore, appeared in the Atlanta Constitution and created a vogue for a distinctive type of dialect literature. This and successive ...
popular U.S. symbol usually associated with a cartoon figure having long white hair and chin whiskers and dressed in a swallow-tailed coat, vest, tall hat, and striped trousers. His appearance ... [1 Related Articles]
(from the article "Garis, Howard R") author, creator of the Uncle Wiggily series of children's stories, who began his career as a newspaperman on the Newark Evening News in 1896. Shortly after, he began writing a ...
(from the article "San Juan Mountains") ...River, in northern New Mexico. Many peaks in the northern section exceed 14,000 ft (4,300 m), including Mts. Eolus, Sneffels, Handies, Sunshine, Wetterhorn, Redcloud, San Luis, and Windom, with Uncompahgre ...
(from the article "complexity") The kinds of behaviours seen in models of complex systems are the result of following a set of rules. This is because these models are embodied in computer programs, which ...
(from the article "international trade") The advantages granted under the MFN clause may be conditional or unconditional. If unconditional, the clause operates automatically whenever appropriate circumstances arise. The country drawing benefit from it is not ...
(from the article "conditioning") ...the dog secretes during test trials in which food powder is omitted after the bell has rung. The dog's original response of salivation upon the introduction of food into its ...
(from the article "conditioning") ...food powder is omitted after the bell has rung. The dog's original response of salivation upon the introduction of food into its mouth is called the unconditioned response (UR) to ...
(from the article "aquifer") A groundwater aquifer is said to be unconfined when its upper surface (water table) is open to the atmosphere through permeable material. As opposed to a confined aquifer, the water ...
