949 résultats pour "over"

• Lion - biology.

  Lions usually hunt at night, alone, or in groups. Their preferred prey are large hoofed mammals, such as zebras and wildebeests, but they will go after small hares aswell as huge giraffes. Typically, a lion hunting alone will slowly and silently stalk its prospective victim, trying not to be seen, until it is about 30 m (about 98 ft) away.Then with a burst of speed, the lion will run toward the prey, grab it, and throw it to the ground. The lion kills the prey by biting the back of the animal’s...

• Python (snake) - biology.

  pythons are prey for monitor lizards, crocodiles, storks, eagles, and predatory mammals ranging from hyenas to leopards and other cats depending on the region. V PYTHONS AND HUMANS Modern humans have lived alongside pythons for thousands of years. The giant species have been treated with both reverence and fear. Pythons have been widelyassociated with fertility, water, and the Earth. Some African tribes have worshiped pythons as protective spirits. Among Aboriginal Australians the Rainbow Serpe...

• Hippopotamus - biology.

  hippo backs up to its droppings and uses its tail as a paddle, flicking the dung through the air. This creates a pile that can become several meters wide over time. Male river hippos start to establish territories when they are in their early 20s, and they may eventually control more than 250 m (820 ft) of the water's edge.Subordinate males come and go freely, but a rival male will spark a confrontation if it tries to intrude. The territory owner and intruder face each other open-mouthedand, if...

• From Bulfinch's Mythology: Charlemagne - anthology.

  The titles of some of Archbishop Turpin's chapters will show the nature of his history. They are these: 'Of the Walls of Pampeluna, that fell of themselves.' 'Of theWar of the holy Facundus, where the Spears grew.' (Certain of the Christians fixed their spears, in the evening, erect in the ground, before the castle; and found them,in the morning, covered with bark and branches.) 'How the Sun stood still for Three Days, and the Slaughter of Four Thousand Saracens.' Turpin's history has perhap...

• Mercury (planet) - astronomy.

  In 1991 powerful radio telescopes on Earth revealed signs of possible deposits of ice in the polar regions of Mercury. These ice deposits occur in areas where sunlightnever falls, such as crater bottoms near both of the planet’s poles. Similar ice deposits may have been found during the 1990s near the poles of the Moon by theClementine and Lunar Prospector spacecrafts. The ice on Mercury likely comes from comets or water-bearing meteorites that have hit Mercury over the planet’s historyup throug...

• Frank Lloyd Wright I INTRODUCTION Robie House The Frederick C.

  Hills/DeCaro HouseAmerican architect Frank Lloyd Wright, a pioneer of modern architecture, lived and worked in the Chicago area during thelate 19th and early 20th centuries. He designed many single-family houses, known as prairie houses. The Hills/DeCarohouse in Oak Park, west of Chicago, is one of more than 20 houses Wright designed while living in the town between 1890and 1910.© 2007 Frank Lloyd Wright Foundation / Artists Rights Society (ARS), New York / Photo: Mary Ann Hemphill/Photo Researc...

• From Bulfinch's Mythology: Proserpine - anthology.

  the furrow, the seed failed to come up; there was too much sun, there was too much rain; the birds stole the seeds—thistles and brambles were the only growth.Seeing this, the fountain Arethusa interceded for the land. 'Goddess,' said she, 'blame not the land; it opened unwillingly to yield a passage to your daughter. I can tellyou of her fate, for I have seen her. This is not my native country; I came hither from Elis. I was a woodland nymph, and delighted in the chase. They praised mybeauty, bu...

• Martial Arts.

  These movements are based on stylized renditions of ancient kung fu arm and foot blows. C Tae Kwon Do Tae kwon do (Korean for 'way of hands and feet') was founded in 1955 by a group of masters led by Korean general Choi Hong Hi. It is the national sport and pastimeof Korea and is also popular throughout the world. Often referred to as Korean karate, tae kwon do is reputedly based on ancient Korean and modern Japanesemethods of combat. Basic to tae kwon do are many spectacular kicks, particularl...

• Yukon Territory - Geography.

  Tourism is the second most important private sector industry in the Yukon. Visitors come to fish, hunt, enjoy the rugged scenery, and see the historic buildings andcreeks associated with the gold rush. Some marten, lynx, muskrat, wolverine, and other fur-bearing animals are still trapped, but the Yukon plays a minor role in Canadian fur production. The Yukon’s manufacturing industries consist almost exclusively of some mineral refining, printing, and sawmilling. Several hydroelectric plants gene...

• Yukon Territory - Canadian History.

  Tourism is the second most important private sector industry in the Yukon. Visitors come to fish, hunt, enjoy the rugged scenery, and see the historic buildings andcreeks associated with the gold rush. Some marten, lynx, muskrat, wolverine, and other fur-bearing animals are still trapped, but the Yukon plays a minor role in Canadian fur production. The Yukon’s manufacturing industries consist almost exclusively of some mineral refining, printing, and sawmilling. Several hydroelectric plants gene...

• Wireless Communications.

  were large, heavy units. After the invention of the transistor in 1948, radios shrank in size to small handheld radio transceivers. Public two-way radios with severalfrequency options are widely available as well. Usually limited in range to a few miles, these units are great aids for such mobile professionals as construction workers,film crews, event planners, and security personnel. Simpler two-way radios, called walkie-talkies, have been popular children’s toys for years. Most walkie-talkiesb...

• God. I INTRODUCTION God, the center and focus of religious faith, a holy

  C Islam Islam arose as a powerful reaction against the ancient pagan cults of Arabia, and as a consequence it is the most starkly monotheistic of the three biblically rootedreligions. The name Allah means simply “the God.” He is personal, transcendent, and unique, and Muslims are forbidden to depict him in any creaturely form. The primary creed is that “There is no god but Allah, and Muhammad is the apostle of Allah.” Allah has seven basic attributes: life, knowledge, power, will, hearing, se...

• Courts in the United States.

  The term circuit derives from the original structure of these courts. Under the Judiciary Act of 1789, trials of certain cases were required to be held before three-judge circuit courts consisting of two Supreme Court justices and the federal trial judge in the district court. In addition to their regular duties, Supreme Court justices were required to ride circuit, traveling from district to district within their assigned circuit, often covering great distances. In 1891 Congress establishe...

• Japanese Art and Architecture I INTRODUCTION Otani Oniji as Eitoku Otani Oniji as Eitoku is one of a number of woodblock prints created by the artist T? sh ?sai Sharaku between 1794 and 1795 during the Edo period in Japan.

  Jō mon PotteryJapan’s J ōmon people, who thrived from 10,000 to 300 bc, made distinctive pottery for boiling, steaming, and storing food.The pots were made with coils of clay and then decorated by rolling carved sticks, plant fibers, or braided cords over theouter surface. This cord-marked (j ōmon) pottery gave the culture its name.Scala/Art Resource, NY The first settlers of Japan, the J ōmon people (10,000?-300? BC), named for the cord markings that decorated the surfaces of their clay vessel...

• John Diefenbaker.

  only Conservative elected from Saskatchewan, which had gone solidly to the Co-operative Commonwealth Federation (CCF), a coalition party dedicated to social andwelfare reforms. In 1952 the Liberals in Saskatchewan abolished Diefenbaker's Lake Centre seat altogether by merging it with the neighboring legislative district of Moose Jaw, where theCCF had a vast majority. In 1953 Diefenbaker decided to run for election in Prince Albert. Again he was the only Conservative returned to Parliament fromSa...

• John Diefenbaker - Canadian History.

  only Conservative elected from Saskatchewan, which had gone solidly to the Co-operative Commonwealth Federation (CCF), a coalition party dedicated to social andwelfare reforms. In 1952 the Liberals in Saskatchewan abolished Diefenbaker's Lake Centre seat altogether by merging it with the neighboring legislative district of Moose Jaw, where theCCF had a vast majority. In 1953 Diefenbaker decided to run for election in Prince Albert. Again he was the only Conservative returned to Parliament fromSa...

• Aegean Civilization .

  warlike. The styles are also more formal and geometric than those of earlier examples, anticipating the art of classical Greece. A typical Mycenaean city had, at its center, the fortress palace of the king. The cities were fortified with massive structures of unevenly cut stones, known as Cyclopeanwalls. The Linear B tablets from this time include names of Greek gods, such as Zeus, and contain detailed records of royal possessions. The gold masks, weapons, andjewelry found by Schliemann at the r...

• Aegean Civilization - USA History.

  warlike. The styles are also more formal and geometric than those of earlier examples, anticipating the art of classical Greece. A typical Mycenaean city had, at its center, the fortress palace of the king. The cities were fortified with massive structures of unevenly cut stones, known as Cyclopeanwalls. The Linear B tablets from this time include names of Greek gods, such as Zeus, and contain detailed records of royal possessions. The gold masks, weapons, andjewelry found by Schliemann at the r...

• Barbados - country.

  Barbados is served by a public library system centered in Bridgetown. B Culture The culture of Barbados combines English institutions, which evolved through more than three centuries of English rule, with a folk culture of African origin. Because ofits English traditions, Barbados is sometimes called “Little England.” Cricket has traditionally been the national game, and the island has produced some of the sport’sgreatest players. Water sports including surfing, swimming, snorkeling, and sailin...

• Greenhouse Effect.

  addition, humans cut down huge tracts of trees for lumber or to clear land for farming or building. This process, known as deforestation, can both release the carbonstored in trees and significantly reduce the number of trees available to absorb carbon dioxide. As a result of these human activities, carbon dioxide in the atmosphere is accumulating faster than Earth’s natural processes can absorb the gas. By analyzing airbubbles trapped in glacier ice that is many centuries old, scientists have d...

• Astronaut - astronomy.

  Every operation during a flight is important and interesting, but many might be boring to an observer. Much of an astronaut’s job is entering computer instructions,preparing samples, making measurements, recording data, fixing what breaks, and adjusting the checklist when something unexpected happens. Sometimes astronautsretrieve or repair satellites, rendezvous or dock with other spacecraft, and do important emergency repairs. The adaptability of the human crew is crucial to the successof missi...

• Honolulu - geography.

  of Brigham Young University. The state’s largest museum, the Bernice Pauahi Bishop Museum, is located in Honolulu. It contains a large collection of Polynesian archaeological artifacts, as well asmany exhibits on Hawaiian history and culture. The museum also has an extensive entomological collection with more than 13 million specimens. Other importantmuseums include the Honolulu Academy of Arts, known for its extensive collection of Japanese, Chinese, and Korean art; the Contemporary Museum, wit...

• Vitamin.

  Vitamin B 1, or thiamine, promotes the metabolism of carbohydrates, enabling these nutrients to release their energy. Thiamine also plays a role in the functioning of the nervous system, muscles, and heart. The body does not store thiamine and people who are malnourished may develop thiamine deficiency. Mild thiamine deficiency cancause fatigue, muscle weakness, and loss of appetite. Severe thiamine deficiency causes beriberi, a disease characterized by muscle weakness, swelling of the heart,and...

• Parkinson Disease.

  III SYMPTOMS Parkinson disease most notably affects motor control (muscle activity). The disease progresses differently for each individual—symptoms develop swiftly in some peopleand slowly in others. Some Parkinson patients may develop problems that affect their intellect or ability to reason, or they may suffer from depression or anxiety. A Motor Control Problems Doctors look for the presence of four principal symptoms in patients they suspect may have Parkinson disease. Tremor (the involun...

• Kuwait (country) - country.

  Oil revenues have allowed Kuwait to build an extensive educational system, yielding a literacy rate of 84 percent. Public school is free and compulsory from the age of 6to 13, and several private schools also teach this age group. Kuwait University (founded in 1966) is also free and offers programs in a wide range of professional andscientific fields at several campuses. Both the extensive library system at Kuwait University and the collection at Kuwait National Museum (1957) were heavily damage...

• Prince Edward Island - Geography.

  hectares (109 acres) each. In 2006 there were 1,700 farms, of which the average size was 148 hectares (366 acres). In 2005 the total farm cash receipts were C$510million. The most important agricultural products in terms of value include potatoes, milk and cream, cattle and calves, hogs, tobacco, vegetables, eggs, hens andchickens, and furs. For the most part the island’s agriculture is diversified, rather than specialized, because of the lack of a large urban industrial population within easy r...

• Prince Edward Island - Canadian History.

  hectares (109 acres) each. In 2006 there were 1,700 farms, of which the average size was 148 hectares (366 acres). In 2005 the total farm cash receipts were C$510million. The most important agricultural products in terms of value include potatoes, milk and cream, cattle and calves, hogs, tobacco, vegetables, eggs, hens andchickens, and furs. For the most part the island’s agriculture is diversified, rather than specialized, because of the lack of a large urban industrial population within easy r...

• Nicaraguan Revolution.

  Directorate. Within a year Robelo and Violeta Chamorro left the junta, and the Council of State was reorganized to guarantee an overwhelming Sandinista majority.Elections were postponed, restrictions were placed on the media, and relations with the Roman Catholic Church became increasingly tense. Two non-Sandinistasreplaced Robelo and Chamorro on the junta, but they had little power, and the government’s relations with opposition political parties and the private business sectordeteriorated. A D...

• Tanzania - country.

  The population of Tanzania (2008 estimate) is 40,213,162, giving the country an overall population density of 45 persons per sq km (118 per sq mi). Yet the populationdistribution is irregular, with high densities found near fertile soils around Kilimanjaro and the shores of Lake Malawi, and comparatively low density throughout much ofthe interior of the country. In the late 1960s and 1970s the Tanzanian government resettled most of the rural population in collective farming villages as part of i...

• The Merchant of Venice By William Shakespeare

  The Duke decides to spare Shylock's life, but he does give half of Shylock's money to Antonio, and he gives the rest of it to the state. Antonio says that he will not accept the money if Shylock will agree to become a Christian and if, in his will, he will agree to leave his money to his daughter, Jessica, and her new husband, Lorenzo. Shylock, broken and defeated, agrees to all these conditions and leaves the court. Overjoyed, Antonio and his friends offer to pay the young lawyer whatev...

• Winston Churchill I INTRODUCTION Winston Churchill (1874-1965), British politician and prime minister of the United Kingdom (1940-1945, 1951-1955), widely regarded as the greatest British leader of the 20th century.

  sufficient tools to break the stalemate on the western front and he worked on developing armored fighting vehicles (tanks) to break the deadlock and end theslaughter. As the lines hardened on the western front, Churchill focused on a campaign to force open the Dardanelles Strait, controlled by the Ottoman Empire, to give the Allies adirect route to Russia through the Black Sea. Such a move would bring much-needed supplies to the Russian armies and eliminate the Ottomans from the war. Whenthe nav...

• Winston Churchill.

  sufficient tools to break the stalemate on the western front and he worked on developing armored fighting vehicles (tanks) to break the deadlock and end theslaughter. As the lines hardened on the western front, Churchill focused on a campaign to force open the Dardanelles Strait, controlled by the Ottoman Empire, to give the Allies adirect route to Russia through the Black Sea. Such a move would bring much-needed supplies to the Russian armies and eliminate the Ottomans from the war. Whenthe nav...

• Winston Churchill .

  sufficient tools to break the stalemate on the western front and he worked on developing armored fighting vehicles (tanks) to break the deadlock and end theslaughter. As the lines hardened on the western front, Churchill focused on a campaign to force open the Dardanelles Strait, controlled by the Ottoman Empire, to give the Allies adirect route to Russia through the Black Sea. Such a move would bring much-needed supplies to the Russian armies and eliminate the Ottomans from the war. Whenthe nav...

• From "Resistance to Civil Government" - anthology.

  intending it, as God. A very few—as heroes, patriots, martyrs, reformers in the great sense, and men—serve the state with their consciences also, and so necessarily resist it for the most part; and they are commonly treated as enemies by it. A wise man will only be useful as a man, and will not submit to be “clay,” and “stop a holeto keep the wind away,” but leave that office to his dust at least: “I am too high born to be propertied,To be a second at control,Or useful serving-man and instr...

• United Arab Emirates - country.

  III PEOPLE Most people living in the UAE (known as Emiris) are Arabs, a large majority of whom are city and town dwellers. A small number are nomadic (having no permanent home). The population has grown dramatically since the mid-1960s, largely due to the influx of oil workers to the country. Four-fifths of the UAE’s inhabitants areforeign workers and their families. The UAE also has a very youthful population, due to the large numbers of young foreign workers, a cultural preference for larg...

• Submarine.

  B Propulsion Modern submarines use either diesel-electric or nuclear power to drive the sub's propeller and to provide internal electric power. Diesel-electric power emerged as themost efficient propulsion system for submarines in the early 20th century, following unsuccessful attempts to use steam or gasoline power. While on the surface, thesubmarine uses a diesel engine to drive the propeller and generate electricity. When submerged, a battery-driven electrical motor takes over for propulsion...

• Crusades.

  modern Lebanon; the Principality of Antioch, in modern Syria; and the County of Edessa, in modern northern Syria and southern Turkey. IV CRUSADES OF THE 12TH CENTURY The Crusades of the 12th century, through the end of the Third Crusade in 1192, illustrate the tensions and problems that plagued the enterprise as a whole. For thelords of Outremer a compromise with the residents and Muslim powers made sense; they could not live in constant warfare. And yet as European transplants theydepended on...

• Crusades .

  modern Lebanon; the Principality of Antioch, in modern Syria; and the County of Edessa, in modern northern Syria and southern Turkey. IV CRUSADES OF THE 12TH CENTURY The Crusades of the 12th century, through the end of the Third Crusade in 1192, illustrate the tensions and problems that plagued the enterprise as a whole. For thelords of Outremer a compromise with the residents and Muslim powers made sense; they could not live in constant warfare. And yet as European transplants theydepended on...

• Excerpt from Barnaby Rudge - anthology.

  Mr. Dennis rolled lazily over upon his breast, and resting his chin upon his hand in imitation of the attitude in which Hugh lay, said, as he too looked towards thedoor: “ Ay, ay, you knew him, brother, you knew him. But who'd suppose to look at that chap now, that he could be the man he is! Isn't it a thousand cruel pities, brother,that instead of taking his nat'ral rest and qualifying himself for further exertions in this here honourable cause, he should be playing at soldiers like a boy?...

• Women's Rights.

  In 1840 Lucretia Mott and Elizabeth Cady Stanton traveled to London to attend the World Anti-Slavery Convention. Upon arrival, however, the women were barred fromparticipating in the conference and forced to sit behind a curtain. This experience of discrimination inspired them to organize the first women’s rights convention. Thisconvention met in Seneca Falls, New York, on July 19 and 20, 1848. The Seneca Falls Convention attracted more than 200 women and approximately 40 men. For theconvention,...

• Criminal Punishment.

  In the United States and Canada, younger offenders may be sentenced to highly regimented, military-style correctional programs known as boot camps. Generally,offenders volunteer to participate in boot camp programs to avoid other types of incarceration. At boot camps, officials subject offenders to strict discipline and physicaltraining. They also provide educational or vocational programs. Boot camps serve as an alternative to traditional, long-term incarceration and attempt to train offenderst...

• Ulysses S.

  In the autumn of 1862, Grant began planning the drive on Vicksburg, Mississippi, the Confederate stronghold on the Mississippi River, which was to yield one of hisgreatest military successes. After several unsuccessful attempts on Vicksburg during the winter, Grant devised a new strategy of attack. In April 1863 he marched hisarmy south along the west side of the river to a point well below the heavily defended city. There, with the aid of the Union river fleet, he crossed the river and began as...

• Ulysses S.

  In the autumn of 1862, Grant began planning the drive on Vicksburg, Mississippi, the Confederate stronghold on the Mississippi River, which was to yield one of hisgreatest military successes. After several unsuccessful attempts on Vicksburg during the winter, Grant devised a new strategy of attack. In April 1863 he marched hisarmy south along the west side of the river to a point well below the heavily defended city. There, with the aid of the Union river fleet, he crossed the river and began as...

• Butterflies and Moths - biology.

  The smallest butterflies are certain blues that have wingspans of a mere 0.7 cm (0.25 in). The largest are the female giant birdwings of Papua New Guinea, whichmeasure up to 30 cm (12 in) across. Moths range in size from tiny Microlepidoptera, several groups of small moths with wings no more than 0.16 cm (0.06 in) across, togiant silk moths, such as the atlas moth, which may exceed 30 cm (12 in) in wingspan. IV REPRODUCTION AND LIFE CYCLE Butterflies locate potential mates by sight, identifyin...

• Welfare.

  industrializing societies. Governments typically financed social insurance programs with tax funds and direct levies on the wages of potential recipients. Social insurancereplaced part of incomes lost when workers became disabled, were laid off, or had reached an age that forced them out of the labor market. Later, governments of Germany, France, Belgium, Sweden, and other countries developed forms of social insurance that provided population-wide, or universal,coverage. Such forms included chil...

• Geology.

  terminology. Today the geologic time scale is generally agreed upon and used by scientists around the world, dividing time into eons, eras, periods, and epochs. Everyfew years, the numerical time scale is refined based on new evidence, and geologists publish an update. Geologists use several methods to determine geologic time. These methods include physical stratigraphy, or the placement of events in the order of their occurrence,and biostratigraphy, which uses fossils to determine geologic time...

• Bosnia and Herzegovina - country.

  Serb military campaigns in 1992 and 1993 and Croat campaigns in 1993 and 1995 were aimed at expelling others from areas claimed by these groups. By the end ofthe war almost all non-Serbs had been expelled from Serb-claimed lands in eastern and northern Bosnia, and non-Croats from Croat-claimed lands in southwesternBosnia. In turn, most non-Muslims had left land under Muslim control in northwestern Bosnia. The largest cities had mixed populations in 1991, but the war and its aftermath made them a...

• Connecticut - geography.

  The state’s shoreline, when all the bays and inlets are taken into account, has a total length of 995 km (618 mi). The coastline is deeply indented by long estuaries androcky inlets, and there are many sandy beaches and stretches of tidal marsh. There are several good harbors along the coast, the most important of which is at NewHaven. A few small islands lie offshore in Long Island Sound. D Climate Connecticut has long, hot summers and cold winters. The climate does not vary greatly from place...

• Connecticut - USA History.

  The state’s shoreline, when all the bays and inlets are taken into account, has a total length of 995 km (618 mi). The coastline is deeply indented by long estuaries androcky inlets, and there are many sandy beaches and stretches of tidal marsh. There are several good harbors along the coast, the most important of which is at NewHaven. A few small islands lie offshore in Long Island Sound. D Climate Connecticut has long, hot summers and cold winters. The climate does not vary greatly from place...

• Meiose

  BRASSAGES ET DIVERSITE DES GAMETETES (1) 1 Le brassage intra-chromosomique Au début de la méiose, en prophase I, des échanges de fragments de chromatides, donc des échanges d’allèles, se produisent entre les chromosomes homologues appariés : c’est le crossing-over . Au cours du crossing-over, l’échange d’allèles est à l’origine d’une nouvelle combinaison d’allèles, différente de la combinaison d’allèles parentale : on parle...