1369 résultats pour "when"

• James Polk.

  1824. Jackson had won a plurality of the popular and electoral votes. But because he lacked a majority of the electoral votes, the House of Representatives had todecide the election among the three candidates with the highest number of electoral votes. When Henry Clay, the candidate who had come in fourth, swung his supportto Adams, Adams won the election. Polk, with his firm belief in democratic rule, held that the election of Adams was a violation of the people's will. In his first speech befo...

• James Polk

  1824. Jackson had won a plurality of the popular and electoral votes. But because he lacked a majority of the electoral votes, the House of Representatives had todecide the election among the three candidates with the highest number of electoral votes. When Henry Clay, the candidate who had come in fourth, swung his supportto Adams, Adams won the election. Polk, with his firm belief in democratic rule, held that the election of Adams was a violation of the people's will. In his first speech befo...

• History of Colonial America - U.

  Despite the lack of settlement, New France prospered as a vast fur-trading enterprise. French explorers traveled deep into the North American continent seeking newsupplies of deerskins and beaver pelts. In 1673 French missionary Jacques Marquette reached the Mississippi River in present-day Wisconsin. In 1681 explorer René-Robert Cavelier, Sieur de La Salle, traveled down the majestic Mississippi to the Gulf of Mexico. He honored the reign of King Louis XIV (1643-1715) by creating the newcolony...

• Human Nutrition.

  is one of the most preventable types of cancer. Nutritionists caution that most Americans need to eat more complex carbohydrates. In the typical American diet, only 40 to 50 percent of total calories come fromcarbohydrates—a lower percentage than found in most of the world. To make matters worse, half of the carbohydrate calories consumed by the typical American comefrom processed foods filled with simple sugars. Experts recommend that these foods make up no more that 10 percent of our diet, bec...

• Aboriginal Australians - History.

  Until Europeans began to settle in Australia in 1788, the Aboriginal way of life was supported by hunting, gathering, and fishing. Like other hunting and gatheringpeoples, Aboriginal people had an extremely detailed knowledge of their environment, especially plant ecology and animal behavior. The deep connection betweenAboriginal people and the natural world influenced every part of their culture, including their food gathering, tools, trade, religion, art, music, language, and socialorganizatio...

• World Energy Supply.

  In the 1990s, oil production by non-OPEC countries remained strong and production by OPEC countries rebounded. The result at the end of the 20th century was aworld oil surplus and prices (when adjusted for inflation) that were lower than in 1972. Experts are uncertain about future oil supplies and prices. Low prices have spurred greater oil consumption, and experts question how long world petroleum reservescan keep pace with increased demand. Many of the world’s leading petroleum geologists beli...

• Laos - country.

  by the year 2025. About one-quarter of Laos’s people live in mountainous regions. The rest live in upland valleys or on the flood plains of the Mekong and its tributaries.Just over three-quarters of the population live in rural areas, although the proportion of people living in urban areas is steadily increasing. Vientiane is the capital and largest city of Laos. Louangphrabang, the former royal capital, is an increasingly popular tourist destination. Other major cities are theregional capitals...

• Turtle.

  Turtles use their jaws to cut and handle food. Instead of teeth, a turtle’s upper and lower jaws are covered by horny ridges, similar to a bird’s beak. Meat-eating turtlescommonly have knife-sharp ridges for slicing through their prey. Plant-eating turtles often have ridges with serrated edges that help them cut through tough plants.Turtles use their tongues in swallowing food, but unlike many other reptiles, such as chameleons, they cannot stick out their tongues to capture food. C Limb Structu...

• Turtle - biology.

  Turtles use their jaws to cut and handle food. Instead of teeth, a turtle’s upper and lower jaws are covered by horny ridges, similar to a bird’s beak. Meat-eating turtlescommonly have knife-sharp ridges for slicing through their prey. Plant-eating turtles often have ridges with serrated edges that help them cut through tough plants.Turtles use their tongues in swallowing food, but unlike many other reptiles, such as chameleons, they cannot stick out their tongues to capture food. C Limb Structu...

• Vietnam War.

  rigged, since about 150,000 more people voted in Saigon than were registered. Diem then deposed Bao Dai, who had been the only other candidate, and declaredSouth Vietnam to be an independent nation called the Republic of Vietnam (RVN), with himself as president and Saigon as its capital. Vietnamese Communists and manynon-Communist Vietnamese nationalists saw the creation of the RVN as an effort by the United States to interfere with the independence promised at Geneva. III THE BEGINNING OF THE...

• Vietnam War - History.

  rigged, since about 150,000 more people voted in Saigon than were registered. Diem then deposed Bao Dai, who had been the only other candidate, and declaredSouth Vietnam to be an independent nation called the Republic of Vietnam (RVN), with himself as president and Saigon as its capital. Vietnamese Communists and manynon-Communist Vietnamese nationalists saw the creation of the RVN as an effort by the United States to interfere with the independence promised at Geneva. III THE BEGINNING OF THE...

• Vietnam War - U.

  rigged, since about 150,000 more people voted in Saigon than were registered. Diem then deposed Bao Dai, who had been the only other candidate, and declaredSouth Vietnam to be an independent nation called the Republic of Vietnam (RVN), with himself as president and Saigon as its capital. Vietnamese Communists and manynon-Communist Vietnamese nationalists saw the creation of the RVN as an effort by the United States to interfere with the independence promised at Geneva. III THE BEGINNING OF THE...

• Elephant - biology.

  B Trunk An elephant's nose and upper lip are combined in a long, limber trunk, an exceptionally supple appendage with an estimated 150,000 muscles. The versatile trunk actslike a hand for grasping low-growing shrubs and other food and placing it into the mouth; an arm for breaking off tree branches; or a snorkel for breathing when theelephant's body is submerged. Elephants also use their trunks to suck up water and squirt it into their mouths for drinking or over their bodies for bathing. Nostr...

• Physics I INTRODUCTION Physics, major science, dealing with the fundamental constituents of the universe, the forces they exert on one another, and the results produced by these forces.

  Starting about 1665, at the age of 23, Newton enunciated the principles of mechanics, formulated the law of universal gravitation, separated white light into colors,proposed a theory for the propagation of light, and invented differential and integral calculus. Newton's contributions covered an enormous range of naturalphenomena: He was thus able to show that not only Kepler's laws of planetary motion but also Galileo's discoveries of falling bodies follow a combination of his ownsecond law of m...

• Rhinoceros - biology.

  Male and female rhinos have a similar physical appearance, although male rhinos are usually larger than females, with the size difference varying between species. Inthe wild, some rhinos probably live into their late 40s, and they have survived into their 30s in captivity. IV TYPES OF RHINOCEROSES Until recently, mammalogists divided the rhinoceros family into three subfamilies, each with different characteristics. Scientists now believe that living rhinos belong to asingle subfamily, although...

• Gardening - biology.

  of synthetic and organic fertilizers, see Organic Farming.) Fertilizers usually are sold in packages, on which the percentage by weight of the macronutrients nitrogen (N), phosphorus (P), and potassium (K) are listed on thelabel—always in the order N-P-K. For example, a fertilizer that is labeled 10-5-3 is 10 percent nitrogen, 5 percent phosphorus, and 3 percent potassium. V PLANTING AND TRANSPLANTING Before planting seeds, gardeners prepare, or till, the soil using a variety of methods. Some...

• William Shakespeare I INTRODUCTION William Shakespeare (1564-1616), English playwright and poet, recognized in much of the world as the greatest of all dramatists.

  Shakespeare’s reputation today is, however, based primarily on the 38 plays that he wrote, modified, or collaborated on. Records of Shakespeare’s plays begin toappear in 1594, when the theaters reopened with the passing of the plague that had closed them for 21 months. In December of 1594 his play The Comedy of Errors was performed in London during the Christmas revels at Gray’s Inn, one of the London law schools. In March of the following year he received payment for two playsthat had been per...

• William Shakespeare.

  Shakespeare’s reputation today is, however, based primarily on the 38 plays that he wrote, modified, or collaborated on. Records of Shakespeare’s plays begin toappear in 1594, when the theaters reopened with the passing of the plague that had closed them for 21 months. In December of 1594 his play The Comedy of Errors was performed in London during the Christmas revels at Gray’s Inn, one of the London law schools. In March of the following year he received payment for two playsthat had been per...

• Dogsledding.

  Mushers are caretakers, but also coaches. Top mushers have large kennels, and their preparation for competition begins by buying and breeding race-specific dogs.They train their dogs, decide which to run on certain days, and make adjustments during races by switching and dropping dogs. Serious competitors run their dogsyear-round, using carts and all-terrain vehicles when there is not enough snow on the ground. During races they decide their strategy, choosing when to rest and whento push ahead....

• From Bulfinch's Mythology: Perseus and Medusa - anthology.

  The Sea-monster Perseus, continuing his flight, arrived at the country of the Æthiopians, of which Cepheus was king. Cassiopeia his queen, proud of her beauty, had dared to compareherself to the Sea-Nymphs, which roused their indignation to such a degree that they sent a prodigious sea-monster to ravage the coast. To appease the deities,Cepheus was directed by the oracle to expose his daughter Andromeda to be devoured by the monster. As Perseus looked down from his aerial height he beheld thev...

• Serbia - country.

  Minority groups speak their own languages, such as Albanian and Hungarian. Bosniaks generally speak Bosnian and write it with the Latin alphabet. Serbs are by tradition Orthodox Christians. The Roman Catholic and Protestant churches also have adherents in Serbia. Most of the ethnic Albanians of Kosovo areSunni Muslims ( see Sunni Islam), as are the Bosniaks of the Sandžak region. Bosniaks are descendants of Slavs who converted to Islam in the 15th and 16th centuries. B Education The leading in...

• Tuberculosis.

  TB has existed for thousands of years. Scars on a skull found in Turkey indicate the presence of the disease 500,000 years ago. Scientists also have found tubercles inmummified bodies from ancient Egypt. References to TB can be found in the writings of ancient Babylonia, Egypt, and China. The term tuberculosis was first used in 1839; it was derived from the Latin word tubercula, meaning small lump, referring to the small scars seen in tissues of infected individuals. TB reappeared in Europe...

• Eye. I INTRODUCTION Eye, light-sensitive organ of vision in animals. The eyes of

  Several structures, not parts of the eyeball, contribute to the protection of the eye. The most important of these are the eyelids, two folds of skin and tissue, upper andlower, that can be closed by means of muscles to form a protective covering over the eyeball against excessive light and mechanical injury. The eyelashes, a fringe ofshort hairs growing on the edge of either eyelid, act as a screen to keep dust particles and insects out of the eyes when the eyelids are partly closed. Inside the...

• Electric Motors and Generators.

  the armature. It is often desirable to generate as high a voltage as possible, and rotating armatures are not practical in such applications because of the possibility of sparkingbetween brushes and slip rings and the danger of mechanical failures that might cause short circuits. Alternators are therefore constructed with a stationary armaturewithin which revolves a rotor composed of a number of field magnets. The principle of operation is exactly the same as that of the AC generator described,...

• International Criminal Court.

  only exercise its jurisdiction when a national court is unwilling or unable to carry out the investigation or prosecution. For example, the ICC might intervene when agovernment’s judicial system has collapsed or is actively shielding a person from criminal responsibility. The court may hold accountable any person aged 18 or older at the time of the crime without regard to the individual’s official duties or functions. Therefore, heads ofstate, legislators, and other high-ranking government offic...

• Diseases of Animals.

  infected animal. It may also spread in milk or in garbage that contains contaminated meat. Typical symptoms include blisters that appear on the mouth and feet;animals may become lame when their hooves degenerate. Canine distemper is a highly contagious disease caused by the paramyxovirus, which is transmitted in discharges from the nose and eyes. Symptoms begin with fever,malaise, and nasal and ocular discharges and may progress to convulsions and other nervous system disorders. Parvoviruses aff...

• Radio Astronomy - astronomy.

  equivalent to the apparent angular dimensions of a basketball at the distance of the moon. In 1984, the U.S. government appropriated funds for the construction of aninstallation called the very long baseline array (VLBA), a network of 10 radio antennas spread from the U.S.-Canadian border to Puerto Rico and from Hawaii to the U.S.Atlantic coast. The VLBA is expected to provide angular resolutions in the range of 200-millionths of an arc second. Canada and Australia are both planning similarprogr...

• Feudalism I INTRODUCTION Feudalism, contractual system of political and military relationships existing among members of the nobility in Western Europe during the High Middle Ages.

  lord”; thus, it was not rebellion for a subvassal to fight against his lord’s lord. In England, however, William the Conqueror and his successors required their vassals’vassals to take oaths of fealty to them. B Duties of a Vassal Military service in the field was basic to feudalism, but it was far from all that the vassal owed to his lord. When the lord had a castle, he might require his vassals togarrison it, a service called castle-guard. The lord also expected his vassals to attend his cour...

• confess, I've never thought too much about giving lessons.

  unpopularity atschool, Grandma's coupons,storagefacilities, peoplewhodon't know whattheInternet is,bad handwriting, beautifulsongs,howthere won't behumans infifty years—" "Whosaidthere won't behumans infifty years?" Iasked her,"Are youanoptimist orapessimist?" Shelooked ather watch andsaid, "I'm optimistic. " "Then Ihave some badnews foryou, because humansaregoing todestroy eachother assoon asitbecomes easyenough to,which will bevery soon." "Whydobeautiful songsmakeyousad?" "Because theyaren't t...

• Mythology.

  Across cultures, mythologies tend to describe similar characters. A common character is the trickster. The trickster is recklessly bold and even immoral, but through hisinventiveness he often helps human beings. In Greek mythology, Hermes (best known as the messenger of the gods) was a famous trickster. In one version of acharacteristic tale, Hermes, while still an infant, stole the cattle of his half-brother Apollo. To avoid leaving a trail that could be followed, Hermes made shoes from thebark...

• Interstellar Matter - astronomy.

  silhouette of a cloud of dust. At other times, it blocks only a percentage of the light from behind it, a process known by astronomers as extinction . The long, narrow dark lanes in the Milky Way as seen from Earth are examples of extinction. The amount of extinction is different for different wavelengths of light. A2 Reddening Starlight that does not get completely absorbed by interstellar dust can still be changed by the dust’s effects. As light passes through less dense patches of interstel...

• Organic Chemistry - chemistry.

  B Alkenes and Alkynes Isomeric with the cyclanes, or cycloalkanes as they are sometimes called, is the family of alkenes, also represented by the general formula C nH2n. This family of hydrocarbons is characterized by one or more double bonds between carbon atoms. Propene and cyclopropane, for example, are isomers, as are 1,3-dimethylcyclohexane and 3,4-dimethyl-2-hexene. (The location of the double bond is indicated by the 2-hexene part of the name.) Double bonds may also occur incyclic compou...

• Zebra - biology.

  C Life Span Captive zebras have lived into their late 30s. Life expectancy in the wild, where predators abound, is probably not much more than 12 years. IV SOCIAL BEHAVIOR Like horses, zebras have large brains and a wide variety of social behaviors. Although they cannot match the overall intelligence of mammals that hunt, zebras interactwith each other in complex ways. Zebras usually live in groups known as herds, but the social structure of these groups depends on the species. The plains zeb...

• Sigmund Freud.

  reminiscences from the past and about her daydreams. Remarkably, as her narrative revisited memories from the past, which were associated with the onset of aparticular symptom, each symptom disappeared when accompanied by an emotional outburst. Breuer made use of this discovery to eliminate her symptoms one at atime. He called the treatment the cathartic technique (from the Greek katharsis meaning “purgation”). The treatment was time consuming and required considerable effort to reach dimly re...

• Coffee - biology.

  States law, the addition of chicory or any other substance must be clearly stated on the brand label. IV HISTORY Exactly where and when coffee was first cultivated is not known, but some authorities believe that it was grown initially in Arabia near the Red Sea about AD675. Coffee cultivation was rare until the 15th and 16th centuries, when extensive planting of the tree occurred in the Yemen region of Arabia. The consumption of coffee increasedin Europe during the 17th century, prompting the...

• Los Angeles - geography.

  (2006 population, 472,494), located east of the Port of Los Angeles. The city of Compton (95,701) is located north of Long Beach, on the east side of the AlamedaCorridor. On the other side of the corridor are the cities of Torrance (142,350) and Inglewood (114,914). Northwest of Inglewood and west of downtown Los Angeles are the wealthy and fashionable Santa Monica (88,050) and Beverly Hills (34,979). Both cities are enclaves:Santa Monica is surrounded by the City of Los Angeles to the north, ea...

• Los Angeles - geography.

  (2006 population, 472,494), located east of the Port of Los Angeles. The city of Compton (95,701) is located north of Long Beach, on the east side of the AlamedaCorridor. On the other side of the corridor are the cities of Torrance (142,350) and Inglewood (114,914). Northwest of Inglewood and west of downtown Los Angeles are the wealthy and fashionable Santa Monica (88,050) and Beverly Hills (34,979). Both cities are enclaves:Santa Monica is surrounded by the City of Los Angeles to the north, ea...

• Theseus - Mythology.

  claim his birthright from his father, the king. Aethra took Theseus, when he was 16, to the rock, which the lad lifted easily, and sent him on his way to Athens. Theseus had many adventures on his journey and entered Athens as a hero. Warmly welcomed by his father, Theseus then went on to his greatest adventure, the slaying of the Minotaur, the dreaded bullmonster of King Minos of Crete. Every year, Minos demanded seven men and seven maids from Athens to be sacrificed to the Minotaur, thus bring...

• Bac L anglais

  12AN1LME1 Page : 2/4 Joseph Netmaker brought the letter out to me. Winter had just started to settle itself into the country. Joseph walked on snowshoes from the town. ‘This is for you, Niska,’ he said. ‘It is from the Canadian boss, their hookimaw.’ As soon as I saw the brown letter, the English words written upon it, I knew what it contained. I sat down beside the fire and stirred at it with a stick while Joseph read, first out 5 loud and in his stumbling English, then for me in our l...

• Steam Engine.

  wear caused by this pressure, steam-engine valves are frequently made in a cylindrical form entirely enclosing the piston, so that the pressure is equal all around thevalve and friction is minimized. The development of this type of valve is attributed to the American inventor and manufacturer George Henry Corliss. In other types ofslide valves, the moving portion of the valve is designed so that steam does not press directly on the back of the valve. The linkage between the piston of the engine...

• Sleep - biology.

  V FUNCTIONS OF SLEEP Although no one knows for sure why we sleep, there are a number of theories. Sleep may have evolved to protect animals from their predators by reducing theiractivity during the times when they are most vulnerable. Research has shown that REM and NREM sleep may serve specific biological functions. Sleep deprivation studies reveal that humans and other animals respond to sleeploss in the same way. When study subjects are deprived of REM sleep, they tend to spend longer period...

• Victoria (queen) I INTRODUCTION Victoria (queen) (1819-1901), queen of the United Kingdom of Great Britain and Ireland (1837-1901) and empress of India (1876-1901).

  Queen Victoria never truly recovered from Albert’s death in December 1861 at the age of 42. For almost a decade she remained in strict mourning. She rarely set footin London, and she avoided most public occasions, including the state opening of Parliament. She made an exception, however, for the unveiling of statues dedicated toPrince Albert and, after a few years, for attendance at army reviews. Behind the scenes, she continued to correspond with and talk to her ministers, and she took comfort...

• Victoria (queen).

  Queen Victoria never truly recovered from Albert’s death in December 1861 at the age of 42. For almost a decade she remained in strict mourning. She rarely set footin London, and she avoided most public occasions, including the state opening of Parliament. She made an exception, however, for the unveiling of statues dedicated toPrince Albert and, after a few years, for attendance at army reviews. Behind the scenes, she continued to correspond with and talk to her ministers, and she took comfort...

• Valley.

  Except in mountainous terrain, rivers are almost always flanked by floodplains. Floodplains are flat wide deposits of alluvium, river-deposited sediment, on either side of the river channel. During floods, a river overflows its banks and spreads out the sediment near the river to form a floodplain. Floodplains of large rivers, such as thoseof the Mississippi River, can be flat areas tens of kilometers across. River channels migrate back and forth across their floodplains as alluvium is repeate...

• Valley - Geography.

  Except in mountainous terrain, rivers are almost always flanked by floodplains. Floodplains are flat wide deposits of alluvium, river-deposited sediment, on either side of the river channel. During floods, a river overflows its banks and spreads out the sediment near the river to form a floodplain. Floodplains of large rivers, such as thoseof the Mississippi River, can be flat areas tens of kilometers across. River channels migrate back and forth across their floodplains as alluvium is repeate...

• Cairo (Egypt) - geography.

  Prize-winning author and Cairo native Naguib Mahfouz, whose fiction has provided a chronicle of the city. VI POINTS OF INTEREST The pyramids of Egypt, which served as tombs for the ancient pharaohs, and the statue of the Sphinx, which dates from about 2500 BC and is probably the country's most famous monument, are located just west of Cairo in the suburb of Giza. Depite the desert background usually depicted in photographs, the pyramids areextremely close to Cairo and are likely to be affecte...

• Endocrine System.

  thermostat. When the heat in a house falls, the thermostat responds by switching the furnace on, and when the temperature is too warm, the thermostat switches thefurnace off. Usually, the change that a hormone produces also serves to regulate that hormone's secretion. For example, parathyroid hormone causes the body toincrease the level of calcium in the blood. As calcium levels rise, the secretion of parathyroid hormone then decreases. This feedback mechanism allows for tight controlover hormon...

• 1996 Summer Olympics.

  jump, the first African woman ever to win an Olympic field event. In the first Olympic women's soccer competition, the United States returned to world prominence with a 2-1 gold medal victory over China before more than 76,000spectators—believed to be the largest crowd in history for a women's sporting event. The U.S. team won the first women's World Cup in 1991, defeating Norway inthe final match, but had failed to defend the title in 1995 when they lost to the Norwegians in the semifinals...

• Mark Twain.

  father, who keeps him prisoner in an isolated cabin. The boy escapes and, together with a runaway slave, Jim, sails down the Mississippi on a raft. During their trip,Huck and Jim encounter many unusual characters, including two families involved in a senseless feud and a pair of scoundrels who swindle innocent townspeople. Theirexperiences bring about a strong friendship between the boy and the slave, but their adventures end when Jim is captured and held at the farm of Tom Sawyer’s AuntSally. W...

• Mark Twain I INTRODUCTION Mark Twain, pseudonym of Samuel Langhorne Clemens (1835-1910), American writer and humorist, whose best work is characterized by broad, often irreverent humor or biting social satire.

  father, who keeps him prisoner in an isolated cabin. The boy escapes and, together with a runaway slave, Jim, sails down the Mississippi on a raft. During their trip,Huck and Jim encounter many unusual characters, including two families involved in a senseless feud and a pair of scoundrels who swindle innocent townspeople. Theirexperiences bring about a strong friendship between the boy and the slave, but their adventures end when Jim is captured and held at the farm of Tom Sawyer’s AuntSally. W...