| | - Ogunde, Hubert
- Nigerian playwright, actor, theatre manager, and musician, who was a pioneer in the field of Nigerian folk opera (drama in which music and dancing play a significant role). He was ... [2 Related Articles]
- Ogunmola, Kola
- Nigerian actor, mime, director, and playwright who took Yoruba folk opera (drama that combines Christian themes with traditional Yoruban folklore, music and dancing, and music popular in urban culture) and ... [2 Related Articles]
- Ogurchin
- (from the article "Caspian Sea") ...based partly on underwater relief and partly on hydrologic characteristics. The sea contains as many as 50 islands, mostly small. The largest are Chechen, Tyuleny, Morskoy, Kulaly, Zhiloy, and Ogurchin.
- Oguz
- confederation of Turkic peoples whose homeland, until at least the 11th century AD, was the steppes of central Asia and Mongolia. The Orhon inscriptions (q.v.), describing an early Turkic people, ... [8 Related Articles]
- Ogy'gia
- (from the article "Gozo") ...fruit, vegetables, grapes, and livestock. Fishing is also important, and there is a cottage lace industry. The island is linked with Malta by ferry service. Gozo is held to be ...
- Ogyu Sorai
- one of the foremost Japanese scholars of Chinese culture and a leading Confucianist. Ogyu stressed the pragmatic application of Confucianism to promote social and political reforms by means of uniform, ... [2 Related Articles]
- Oh Sadaharu
- professional baseball player who played for the Tokyo Yomiuri Giants in the Japanese Central League for 22 seasons between 1959 and 1980 who holds the record for the most home ... [1 Related Articles]
- Ohain, Hans Joachim Pabst von
- German designer of the first operational jet engine. [5 Related Articles]
- Ohalo II
- (from the article "Anthropology and Archaeology") Continued excavations at the 23,000-year-old campsite of Ohalo II on the shore of the Sea of Galilee in Israel yielded evidence for the processing of wild wheat and wild barley ...
- Ohara
- Japanese school of floral art, founded by Ohara Unshin in the early 20th century, which introduced the moribana style of naturalistic landscapes in shallow, dishlike vases. The ... [2 Related Articles]
- Ohara Art Museum
- (from the article "Kurashiki") ...to automobile production. After 1964 the industrial centre moved south, where petrochemical and heavy chemical plants face the Inland Sea. Kurashiki is also a cultural centre that houses the Ohara ...
- Ohara Unshin
- (from the article "moribana") (Japanese: "heaped-up flowers"), in Japanese floral art, a style of arranging in which naturalistic landscapes are constructed in low dishlike vases. Developed by Ohara Unshin, founder of the Ohara school ...
- Ohio
- constituent state of the United States of America. Lake Erie lies on the north, Pennsylvania on the east, West Virginia and Kentucky on the southeast and south, and Michigan on ... [18 Related Articles]
- Ohio
- (from the article "submarine") ...could launch its warheads a distance of 2,500 nautical miles. To carry 24 Trident missiles, improved versions of which could travel about 6,500 nautical miles, the U.S. Navy commissioned the ...
- Ohio and Erie Canal
- (from the article "Akron") ...between the Mississippi River and the Great Lakes. Laid out in 1825 by Gen. Simon Perkins, commissioner of the Ohio Canal Fund, the town was assured substantial growth by the ...
- Ohio buckeye
- (from the article "buckeye") Among the most notable is the Ohio buckeye (A. glabra), also called fetid buckeye and American horse chestnut, a tree growing up to 21 m (70 feet) in height, with ...
- Ohio Company
- in U.S. colonial history, organization of Englishmen and Virginians, established in 1748, to promote trade with groups of American Indians and to secure English control of the Ohio River valley. ... [1 Related Articles]
- Ohio Company of Associates
- (from the article "Cutler, Manasseh") Cited for heroism as an American Revolutionary War chaplain, Cutler joined with other veterans of the war in Boston in 1786 to form the Ohio Company of Associates in order ...
- Ohio Gang
- in U.S. history, a group of politicians who achieved high office during the presidential administration of Warren G. Harding and who betrayed their public trust through a number of scandals. ... [1 Related Articles]
- Ohio Idea
- in U.S. history, proposal first presented in the Cincinnati Enquirer in 1867 and later sponsored by Senator George H. Pendleton of Ohio to redeem American Civil War bonds in paper ... [1 Related Articles]
- Ohio Players, the
- American funk and pop band from Dayton, Ohio, that put an indelible stamp on black music from the urban Midwest in the 1970s. The principal members were Clarence ("Satch") Satchell ...
- Ohio River
- major river artery of the east-central United States. Formed by the confluence of the Allegheny and Monongahela rivers at Pittsburgh, it flows northwest out of Pennsylvania, then in a general ... [12 Related Articles]
- Ohio State League
- (from the article "baseball") In midseason that year the International League's board of directors told its secretary to approve no more contracts for black players, although it did not oust the league's five blacks. ...
- Ohio State University
- state university system of Ohio, U.S., consisting of a main campus in Columbus and branches in Lima, Mansfield, Marion, Newark, and the Agricultural Technical Institute in Wooster. The institute and ... [11 Related Articles]
- Ohio University
- public, coeducational institution of higher learning in Athens, Ohio, U.S., about 80 miles (130 km) southeast of Columbus. It was the first institution of higher education in the Northwest Territory. ... [2 Related Articles]
- Ohio Wesleyan University
- (from the article "Delaware") ...Col. Moses Byxbe of Massachusetts settled on the east bank of the river in 1804. The town was laid out in 1808 and became a popular health resort because of ...
- Ohio, flag of
- U.S. state flag in a swallow-tailed shape incorporating red and white stripes and a blue hoist triangle featuring a white-bordered red disk and 17 stars.
- Ohira Masayoshi
- prime minister of Japan from 1978 to 1980.
- Ohl, Russell
- (from the article "solar cell") ...in photography. These early solar cells, however, still had energy-conversion efficiencies of less than 1 percent. This impasse was finally overcome with the development of the silicon solar cell by ...
- Ohlin, Bertil
- Swedish economist and political leader who is known as the founder of the modern theory of the dynamics of trade. In 1977 he shared the Nobel Prize for Economics with ...
- Ohlsson, Bengt
- (from the article "Literature") ...ett trad, while Sara Stridsberg's first novel, Happy Sally, drew a parallel between Sally Bauer, the late Swedish swimmer of the English Channel, and a modern challenger. Journalist Bengt Ohlsson's ...
- ohm
- abbreviation Omega, unit of electrical resistance in the metre-kilogram-second system, named in honour of the 19th-century German physicist Georg Simon Ohm. It is equal to the resistance of a circuit ... [4 Related Articles]
- Ohm's law
- in electricity, experimentally discovered relationship that the amount of steady current through a large number of materials is directly proportional to the potential difference, or voltage, across the materials. Thus, ... [8 Related Articles]
- Ohm's law of hearing
- (from the article "acoustics") ...Ohm first suggested that the ear is sensitive to these spectral components; his idea that the ear is sensitive to the amplitudes but not the phases of the harmonics of ...
- Ohm, Georg Simon
- German physicist who discovered the law, named after him, which states that the current flow through a conductor is directly proportional to the potential difference (voltage) and inversely proportional to ... [3 Related Articles]
- ohm-metre
- (from the article "resistivity") ...In the metre-kilogram-second (mks) system, the ratio of area in square metres to length in metres simplifies to just metres. Thus, in the metre-kilogram-second system, the unit of resistivity is ...
- ohmic contact
- (from the article "semiconductor device") ...circuits. Metal-semiconductor contacts can also be nonrectifying; i.e., the contact has a negligible resistance regardless of the polarity of the applied voltage. Such a contact is called an ohmic contact. ...
- ohmic heating
- (from the article "food preservation") An alternate method for heating foods, called ohmic heating, passes a low-frequency electric current of 50 to 60 hertz directly through the food. A liquid food containing solids, such as ...
- ohmmeter
- instrument for measuring electrical resistance, which is expressed in ohms. In the simplest ohmmeters, the resistance to be measured may be connected to the instrument in parallel or in series. ...
- OhmyNews.com
- (from the article "Media and Publishing") Part of the audience-focus strategy was to embrace the idea of community-generated content. OhmyNews.com (international site <english.ohmynews.com>), a South Korean-based Web site, employed 40,000 registered community journalists worldwide to write ...
- Ohno Taiichi
- Japanese production-control expert for the Toyota Motor Co. whose just-in-time system (kanban) revolutionized manufacturing methods.
- Ohno, Apolo Anton
- (from the article "Ice Skating") ...in the 1,000-m final. She also took gold medals in the 1,500 m and in the 3,000-m relay, winning those events with a manic finishing sprint. Ahn took the 1,000- ...
- Ohre River
- tributary of the Elbe River, rising in the Fichtel Mountains (Fichtelgebirge) of Germany and flowing generally east and northeastward into the Czech Republic past Cheb, Karlovy Vary, Zatec, and Louny ...
- Ohrid
- town, Macedonia, on the northeastern shore of Lake Ohrid (Ohridsko Jezero). The chief resort of Macedonia, Ohrid is linked by rail, road, and air to Skopje. Agriculture, fishing, and tourism ... [4 Related Articles]
- Ohrid, Lake
- lake on the Macedonia-Albania border, southeastern Europe. It has an area of 134 square miles (347 square km). At 938 feet (286 m), it is the deepest lake in the ... [1 Related Articles]
- oidium
- in fungi (kingdom Fungi), a single-celled asexual spore (arthrospore) produced by fragmentation of fungal filaments (hyphae) in lower fungi; the asexual stage of Erysiphaceae (powdery mildew fungi); or, in Basidiomycota, ...
- oidor
- (from the article "audiencia") ...to administer royal justice; also, one of the most important governmental institutions of Spanish colonial America. In Spain the ordinary judges of audiencias in civil cases were called oidores and, ...
- Oignies, Hugo d'
- (from the article "metalwork") The growing naturalism of the 13th century is notable in the work of Nicholas' follower Hugo d'Oignies, whose reliquary for the rib of St. Peter at Namur (1228) foreshadows the ...
- oikonomos
- (from the article "Mesopotamia, history of") ...until the 1st century of the Common era. The archives were managed both in the capital and in provincial cities by an official called a bibliophylax. There were many financial ...
- oikoumene
- (from the article "Eastern Orthodoxy") The ideology that had prevailed since Constantine (4th century) and Justinian I (6th century)-according to which there was to be only one universal Christian society, the oikoumene, led jointly by ...
- oil
- any greasy substance that is liquid at room temperature and insoluble in water. It may be fixed, or nonvolatile, oil; essential oil; or mineral oil (see petroleum). [12 Related Articles]
- oil beetle
- (from the article "blister beetle") The members of the subfamily Meloinae are sometimes known as oil beetles. They do not have hindwings as do most blister beetles, nor do their wing covers meet in the ...
- oil burner
- heating device in which fuel oil is mixed with air under controlled conditions. In most burners oil is supplied under pressure to an atomizing nozzle to produce a fine spray, ... [1 Related Articles]
- oil cake
- coarse residue obtained after oil is removed from various oilseeds, rich in protein and minerals and valuable as poultry and other animal feed. It may be broken up and sold ...
- oil cell
- (from the article "Magnoliidae") ...sometimes even within a single family (e.g., Winteraceae). There is, however, no clear way to discern the primitive from the advanced types of stomata. Most Magnoliidae contain ethereal oil cells, ...
- Oil City
- city, Venango county, northwestern Pennsylvania, U.S., on a bend of the Allegheny River at the mouth of Oil Creek, 70 miles (113 km) north of Pittsburgh. Founded in 1860 on ...
- oil extraction
- isolation of oil from animal by-products, fleshy fruits such as the olive and palm, and oilseeds such as cottonseed, sesame seed, soybeans, and peanuts. Oil is extracted by three general ... [1 Related Articles]
- oil field
- (from the article "Arctic") ...the ground, there are many examples of large-scale and unsightly disturbance of the surface, whether by road building, opencut mining, vehicle movement across the tundra, or other human activities. Oil ...
- oil filter
- (from the article "gasoline engine") Oil filters, if regularly serviced, can remove solid contaminants from crankcase oil, but chemical reactions may form liquids that are corrosive and damaging. Depletion of the additives also limits the ...
- oil gland
- any of a variety of skin structures that secrete oily or greasy substances of various functions. In birds, the preen gland, or uropygial gland, located on the back at the ...
- oil glaze
- (from the article "painting") An oil glaze is a transparent wash of pigment, traditionally thinned with an oleoresin or with stand oil (a concentrate of linseed oil). Glazes can be used to create deep, ...
- oil grass
- any of the 40 species of the genus Cymbopogon (family Poaceae), aromatic, oilcontaining grasses cultivated in the tropics of Asia and Africa and introduced into tropical America. Most species are ... [1 Related Articles]
- oil lamp
- (from the article "lighthouse") ...to Great Britain, marked their route with lighthouses. These early lighthouses had wood fires or torches burning in the open, sometimes protected by a roof. After the 1st century AD, ...
- oil nut
- (from the article "Santalaceae") ...member of the family; it is used in making furniture and in perfumery. Bastard toadflax (genus Comandra in North America, genus Thesium in Europe) and oil, or buffalo, nut (Pyrularia ...
- oil of bay
- (from the article "bay tree") ...(q.v.; Umbellularia californica) is an ornamental tree also called the bay tree. The bay rum tree, or simply bay (Pimenta racemosa), has leaves and twigs that yield, when distilled, oil ...
- oil of betula
- (from the article "Betulaceae") The birches and alders produce timber of considerable economic importance. Corylus is the source of the filbert, or hazelnut. Oil of betula, obtained from birch twigs, smells and tastes like ...
- oil of cassia
- (from the article "cassia") ...cassia plant of the family Lauraceae. Similar to true cinnamon, cassia bark has a more pungent, less delicate flavour and is thicker than cinnamon bark. It contains from 1 to ...
- oil of peppermint
- (from the article "peppermint") Oil of peppermint, a volatile essential oil distilled with steam from the herb, is widely used for flavouring confectionery, chewing gum, dentifrices, and medicines. Pure oil of peppermint is nearly ...
- oil of sassafras
- (from the article "Laurales") Many other species of Cinnamomum have uses as spices and medicines. Cinnamomum cambodianum bark is used to make joss sticks, which are burned as incense. Oil of sassafras, as much ...
- oil of wintergreen
- (from the article "essential oil") In some oils one or only a few components predominate: thus oil of wintergreen contains about 98 percent of methyl salicylate; orange oil, about 90 percent of d-limonene; bois de ...
- oil painting
- painting in oil colours, a medium consisting of pigments suspended in drying oils. The outstanding facility with which fusion of tones or colour is achieved makes it unique among fluid ... [9 Related Articles]
- oil palm
- African tree cultivated as a source of oil in West and Central Africa, where it originated, and in Malaysia and Indonesia, and as an ornamental tree in many subtropical areas; ... [2 Related Articles]
- oil pan
- (from the article "gasoline engine") ...separate from the cylinder assemblies. The cylinder block of an automobile engine is a casting with appropriate machined surfaces and threaded holes for attaching the cylinder head, main bearings, oil ...
- oil pastel
- (from the article "painting") Oil pastels are pigments ground in mastic with a variety of oils and waxes. They are used in a similar way to that of French pastels but are already fixed ...
- oil plant
- any of the numerous plants, either under cultivation or growing wild, used as sources of oil. Oil plants include trees such as palm, herbaceous plants such as flax, and even ...
- oil platform
- (from the article "Notable Civil Engineering Projects") An important example of dealing with old problems by modern methods is provided by the prevention of crack growth in offshore oil-drilling platforms. The primary structure consists of welded steel ...
- Oil Pollution Act
- (from the article "environmental law") ...products or to use cleaner technologies. The "polluter pays" principle underlies U.S. laws requiring the cleanup of releases of hazardous substances, including oil. One such law, the Oil Pollution Act ...
- oil processing
- (from the article "fat and oil processing") method by which animal and plant substances are prepared for eating by humans.fat processing
- oil rig
- (from the article "derrick") apparatus with a tackle rigged at the end of a beam for hoisting and lowering. Its name is derived from that of a famous early 17th-century hangman of Tyburn, Eng. ...
- Oil Rivers
- area comprising the delta of the Niger River in modern Nigeria, West Africa. The Oil Rivers Protectorate was established by the British in 1885. It was renamed the Niger Coast ... [1 Related Articles]
- oil shale
- any sedimentary rock containing various amounts of solid organic material that yields hydrocarbons, along with a variety of solid products, when subjected to pyrolysis-a treatment that consists of heating the ... [6 Related Articles]
- oil spill
- leakage of petroleum onto the surface of a large body of water. Oceanic oil spills became a major environmental problem in the 1960s, chiefly as a result of intensified petroleum ... [6 Related Articles]
- oil sump
- (from the article "gasoline engine") The lubrication system is fed by the oil sump that forms the lower enclosure of the engine. Oil is taken from the sump by a pump, usually of the gear ...
- oil switch
- (from the article "electric switch") ...tumbler, switch-is widely used in home lighting and other applications. The so-called mercury, or "silent," switch is used extensively for controlling home lighting circuits. The oil switch has its live ...
- oil tanning
- (from the article "leather") Oil tanning is an old method in which fish oil or other oil and fatty substances are stocked, or pounded, into dried hide until they have replaced the natural moisture ...
- oil well
- (from the article "petroleum production") The oil wellfeature ofOklahoma CityOklahoma CityHistory...increased. Now a major transportation centre, it is the chief marketing and processing point for ...
- oil window
- (from the article "petroleum") ...generation occurs during the mature stage at depths of about 760 to 4,880 metres (2,500 to 16,000 feet) at temperatures between 65° and 150° C. This special environment is called ...
- oil-for-food program
- (from the article "United Nations") Allegations about corruption surrounding the UN's oil-for-food program in Iraq continued to unfold throughout the year as the Independent Inquiry Committee, chaired by former U.S. Federal Reserve Board chairman Paul ...
- oil-immersion lens
- (from the article "Amici, Giovanni Battista") ...of the observatory at the Royal Museum in Florence, where he also lectured at the museum of natural history. He made major advancements in compound-microscope design and introduced (1840) the ...
- oil-in-water emulsion
- (from the article "pharmaceutical industry") ...also contain some form of thickening or suspending agent to decrease the rate at which the suspended drug settles to the container bottom. Emulsions consist of one liquid suspended in ...
- oil-sealed rotary pump
- (from the article "vacuum technology") ...are available from 12 to 1,000 cubic feet per minute, operating from atmospheric pressure down to as low as 2 × 10-2 torr for single-stage pumps and less than 5 ...
- oil-spot strategy
- (from the article "guerrilla warfare") ...that with the pacification there flowed forward, like a pool of oil, a great belt of civilization." Lyautey later employed this tache d'huile, or oil-spot, strategy in ...
- oil-well cement
- (from the article "cement") Oil-well cements are used for cementing work in the drilling of oil wells where they are subject to high temperatures and pressures. They usually consist of portland or pozzolanic cement ...
- oilbird
- (Steatornis caripensis), nocturnal bird of South America that lives in caves and feeds on fruit, mainly the nuts of oil palms. The oilbird is an aberrant member of the order ... [3 Related Articles]
- oilseed
- (from the article "Agriculture and Food Supplies") For the 2005-06 crop year, world oilseed production rose 1.8% to 388 million metric tons. Production in the 2006-07 crop year was expected to rise another 1.8% as U.S. soybean ...
- oinochoe
- wine jug from the classical period of Greek pottery. A graceful vessel with delicately curved handle and trefoil-shaped mouth, the oinochoe was revived during the Renaissance and again during the ...
- ointment
- (from the article "Administration of drugs") Semisolid dosage forms include ointments and creams. Ointments are preparations for external use, intended for application to the skin. Typically, they have an oily or greasy consistency and can appear ...
- Oio
- region located in north-central Guinea-Bissau. It was created from the former concelhos (municipalities) of Farim, Bissora, and Mansoa in the mid-1970s. Oio's border with the Quinara region, ...
- Oireachtas
- (from the article "Ireland") ...president normally acts on the advice of the government but also consults an advisory Council of State in the exercise of certain functions. The president signs and promulgates bills passed ...
- Oise
- (from the article "Picardy") region of France encompassing the northern departements of Oise, Somme, and Aisne. Picardy is bounded by the regions of Nord-Pas-de-Calais to ...
- Oise Lateral Canal
- (from the article "canals and inland waterways") ...to the two concrete counterweights. Improvements have been made to routes connecting the Seine with the north and east. The Canal du Nord was completed in 1965, and a bottleneck ...
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