583 résultats pour "often"

• Rock Music I INTRODUCTION Carlos Santana Mexican-born guitarist Carlos Santana became a superstar in the late 1960s with a string of hits and an appearance at the famous Woodstock rock festival in 1969.

  point (a single pitch sustained through a progression of chords), and the parallel movement of chords, derived from a technique on the electric guitar known as bar-chording. Many elements of African American music have been a continuing source of influence on rock music. These characteristics include riffs (repeated patterns), backbeats (emphasizing the second and fourth beats of each measure; see Musical Rhythm: Pulse and Meter ), call-and-response patterns, blue notes (the use of certain...

• São Paulo (city) - geography.

  universities include the State University Paulista Júlio de Mesquita Filho (1976), and the even larger University of São Paulo (1934), which incorporates the city’s famousand influential Faculty of Law. Important private universities are Mackenzie University, originally founded by Presbyterian missionaries from the United States (1870);the Paulista University (1972); the Pontifical Catholic University of São Paulo (1946); and the University São Judas Tadeu (1971). The city is home to the São Pau...

• Diabetes Mellitus.

  Once diabetes is diagnosed, treatment consists of controlling the amount of glucose in the blood and preventing complications. Depending on the type of diabetes, thiscan be accomplished through regular physical exercise, a carefully controlled diet, and medication. Individuals with Type 1 diabetes must receive insulin, often two to four times a day, to provide the body with the hormone it does not produce. Insulin cannot be takenorally, because it is destroyed in the digestive system. Consequent...

• Persian Gulf War.

  to “use all necessary means” to force Iraq from Kuwait if Iraq remained in the country after January 15, 1991. The Iraqis rejected the ultimatum. Soon after the vote,the United States agreed to a direct meeting between Secretary of State James Baker and Iraq’s foreign minister. The two sides met on January 9. Neither offered tocompromise. The United States underscored the ultimatum, and the Iraqis refused to comply with it, even threatening to attack Israel. For the United States, themeeting was...

• Persian Gulf War - History.

  to “use all necessary means” to force Iraq from Kuwait if Iraq remained in the country after January 15, 1991. The Iraqis rejected the ultimatum. Soon after the vote,the United States agreed to a direct meeting between Secretary of State James Baker and Iraq’s foreign minister. The two sides met on January 9. Neither offered tocompromise. The United States underscored the ultimatum, and the Iraqis refused to comply with it, even threatening to attack Israel. For the United States, themeeting was...

• Persian Gulf War - U.

  to “use all necessary means” to force Iraq from Kuwait if Iraq remained in the country after January 15, 1991. The Iraqis rejected the ultimatum. Soon after the vote,the United States agreed to a direct meeting between Secretary of State James Baker and Iraq’s foreign minister. The two sides met on January 9. Neither offered tocompromise. The United States underscored the ultimatum, and the Iraqis refused to comply with it, even threatening to attack Israel. For the United States, themeeting was...

• 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...

• Plate Tectonics.

  ridges. The Mid-Atlantic Ridge is an underwater mountain range created at a divergent plate boundary in the middle of the Atlantic Ocean. It is part of a worldwidesystem of ridges made by seafloor spreading. The Mid-Atlantic Ridge is currently spreading at a rate of 2.5 cm per year (1 in per year). The mid-ocean ridges today are60,000 km (about 40,000 mi) long, forming the largest continuous mountain chain on earth. Earthquakes, faults, underwater volcanic eruptions, and vents, oropenings, along...

• 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...

• Musical I INTRODUCTION George Gershwin American pianist, songwriter, and composer George Gershwin was one of the most important figures in popular song in the 1920s and 1930s.

  C Extravaganzas Another predecessor of musical comedy, the extravaganza, evolved soon after the American Civil War (1861-1865) from traditional English pantomime. Extravaganzaswere typically based on fairy tales and Mother Goose. They introduced some of the elements—songs, dances, and comedy combined with spectacular stage sets andeffects—that American musical comedy later became known for. The first and most famous extravaganza show was The Black Crook (1866), often described as America’s fi...

• Artificial Satellite - astronomy.

  The first stage of a multistage rocket consists of rocket engines that provide a huge amount of force, or thrust. The first stage lifts the entire launch vehicle—with itsload of fuel, the rocket body, and the satellite—off the launch pad and into the first part of the flight. After its engines use all their fuel, the first stage portion of therocket separates from the rest of the launch vehicle and falls to Earth. The second stage then ignites, providing the energy necessary to lift the satellit...

• Ronald Reagan.

  deposed shah of Iran to enter the United States for medical treatment, a group of Iranian revolutionaries stormed the U.S. Embassy in Tehrān and held 53 Americansas hostages. United States media publicized the plight of the hostages and Carter’s failure to win their release. They were eventually released in January 1981, on theday of Reagan’s inauguration. The contrast between the television personalities of the two candidates was also very important. Carter’s stiff, nervous manner had never bee...

• Ronald Reagan - USA History.

  deposed shah of Iran to enter the United States for medical treatment, a group of Iranian revolutionaries stormed the U.S. Embassy in Tehrān and held 53 Americansas hostages. United States media publicized the plight of the hostages and Carter’s failure to win their release. They were eventually released in January 1981, on theday of Reagan’s inauguration. The contrast between the television personalities of the two candidates was also very important. Carter’s stiff, nervous manner had never bee...

• Spanish-American War.

  A Blockade of Cuba The Navy’s basic job was to blockade the island of Cuba. If the Spanish army could be cut off from seaborne supplies from Spain, it could not maintain itself for longagainst the Cuban insurgents, let alone prepare to fight the U.S. forces. To maintain a successful blockade, the U.S. Navy would have to control the sea approaches toCuba. To accomplish this, the United States determined that the Spanish navy had to be destroyed wherever it was found. Thus the U.S. war objectives...

• Han Dynasty - History.

  However, these reforms faced serious opposition. The feudal barons formed an alliance and rebelled against Wang Mang. They were joined by members of the Liufamily, who were descended from Jingdi (Ching-ti), a former Han emperor, and a civil war followed. As the empire fell into disorder, militant secret societies formedarmed bands and attacked villages and towns. Wang Mang had believed that proper institutions would eventually bring peace to China, but in AD 23, an army led by the Liu clan brea...

• Uganda - country.

  Uganda’s population is predominantly rural and is concentrated in the south, particularly in the crescent at the edge of Lake Victoria and in the southwest. Almost allUgandans are black Africans. Foreign residents make up less than 4 percent of the population and come mostly from neighboring states. In 2008 Uganda’s population was estimated at 31,367,972. The estimated growth rate of the population in 2008 was 3.6 percent. The birth rate was 48 per 1,000people and the death rate 12 per 1,000. Th...

• Arithmetic I INTRODUCTION Arithmetic, branch of mathematics that arises from counting, the most basic mathematical operation.

  Subtract the units: 6 - 3 = 3. Then subtract the tens column: 6 – 2 = 4. The results of these two single-digit subtractions, written side by side, provide the answer: Subtraction is a bit more complicated if we need to subtract a larger digit from a smaller one. For example, when subtracting 47 from 92, the units value (7) of 47 isgreater than the units value (2) of 92. We can handle this situation using a procedure called borrowing, which is like carrying in reverse. Ten units can be borrowe...

• Ear. I INTRODUCTION Ear, organ of hearing and balance. Only vertebrates, or animals

  line or rotates in any direction. Each canal also contains sensory areas with sensory hair cells that project into a cone-shaped cap of gelatin. Two of the semicircularcanals are in a vertical position and are used to detect vertical movement, such as jumping or falling. The third canal is horizontal and detects horizontal movement,such as turning or spinning. The action of the canals depends on the inertia of the fluid inside. When the motion of the body changes, the fluid lags behind, causing...

• Roman Catholic Church.

  comprehensiveness of its doctrinal tradition. Locating its beginnings in the earliest Christian communities and refusing to acknowledge any decisive break in its history,the Roman Catholic Church considers itself heir to the theological traditions of the apostolic, patristic, medieval, and modern periods. The church does not in principleexclude any theological method, and since the encyclical of Pope Pius XII Divino Afflante Spiritu (1943) it has officially sanctioned modern principles of exeg...

• Inorganic Chemistry - chemistry.

  two electrically charged plates (positively charged top plate and negatively charged bottom plate). By measuring the difference in how fast these electron-laden oildrops fell when the metal plates were charged and uncharged, Millikan was able to calculate the total charge on each oil drop. Because each measurement was a wholenumber multiple of -1.60 × 10 -19 coulombs, Millikan concluded this was the charge carried by a single electron. Using Thomson’s electron charge-to-mass ratio, Millikan then...

• Abolitionist Movement.

  The American Revolution (1775-1783) and the French Revolution (1789-1799), widely seen as revolutions by citizens against oppressive rulers, transformed thisEnlightenment assertion into a call for universal liberty and freedom. The successful slave revolt that began in the French colony of Saint-Domingue in 1791 was part of this revolutionary age. Led by François Dominique ToussaintLouverture, black rebels overthrew the colonial government, ended slavery in the colony, and in 1804 established th...

• Abolitionist Movement - U.

  The American Revolution (1775-1783) and the French Revolution (1789-1799), widely seen as revolutions by citizens against oppressive rulers, transformed thisEnlightenment assertion into a call for universal liberty and freedom. The successful slave revolt that began in the French colony of Saint-Domingue in 1791 was part of this revolutionary age. Led by François Dominique ToussaintLouverture, black rebels overthrew the colonial government, ended slavery in the colony, and in 1804 established th...

• Moon - astronomy.

  B Volcanic Features Maria, domes, rilles, and a few craters display indisputable characteristics of volcanic origin. Maria are plains of dark-colored rock that cover approximately 40 percent ofthe Moon's visible hemisphere. The maria formed when molten rock erupted onto the surface and solidified between 3.16 billion and 3.96 billion years ago. This rockresembles terrestrial basalt, a volcanic rock type widely distributed on Earth, but the rock that formed the maria has a higher iron content an...

• Ottoman Empire .

  fleets at Suez, Egypt; though the Portuguese were not expelled, Selim did manage to prevent the establishment of a total Portuguese monopoly over the spice trade. Selim I died in 1520 after having spent most of his short reign on matters pertaining to the east. His son and successor Süleyman I (reigned 1520-1566) again turnedthe attention of the Ottomans to the west. In August 1521 Süleyman, later known as Süleyman the Magnificent, opened the road to Hungary by capturing Belgrade, aHungarian str...

• Ottoman Empire - History.

  fleets at Suez, Egypt; though the Portuguese were not expelled, Selim did manage to prevent the establishment of a total Portuguese monopoly over the spice trade. Selim I died in 1520 after having spent most of his short reign on matters pertaining to the east. His son and successor Süleyman I (reigned 1520-1566) again turnedthe attention of the Ottomans to the west. In August 1521 Süleyman, later known as Süleyman the Magnificent, opened the road to Hungary by capturing Belgrade, aHungarian str...

• Technology.

  loose soil in this region, known as the Fertile Crescent, was easily scratched for planting, and an abundance of trees was available for firewood. By 5000 BC, farming communities were established in areas known today as Syria, Turkey, Lebanon, Israel, Jordan, Greece, and the islands of Crete and Cyprus. Agricultural societies in these places constructed stone buildings, used the sickle to harvest grain, developed a primitive plowstick, and advanced their skills inmetalworking. Trade in flint al...

• Harry S.

  B2 Presiding Judge Political machines, such as the Pendergast organization, were common to both parties in the 1920s. They were based on the spoils system, in which winning politiciansgave government jobs to those loyal party members who had helped them get elected. Using government jobs as rewards, politicians created efficient (and oftenalmost unstoppable) vote-getting “machines,” in which party loyalty was often more important than doing any work. Without local machine support a political ca...

• Harry S.

  B2 Presiding Judge Political machines, such as the Pendergast organization, were common to both parties in the 1920s. They were based on the spoils system, in which winning politiciansgave government jobs to those loyal party members who had helped them get elected. Using government jobs as rewards, politicians created efficient (and oftenalmost unstoppable) vote-getting “machines,” in which party loyalty was often more important than doing any work. Without local machine support a political ca...

• Armenia (country) - country.

  because of ethnic tension brought on by a secessionist conflict in Nagorno-Karabakh, a region inhabited predominantly by Armenians in western Azerbaijan. In thereverse direction, many Armenian refugees entered Armenia from Azerbaijan during the conflict. Armenia’s official state language is Armenian, an Indo-European language with no surviving close relatives. It has a unique 38-letter alphabet that dates from the early5th century. Of its many spoken dialects, the most important are Eastern or Y...

• First Americans.

  bones and artifacts helped 19th-century archaeologists establish the age of ancient human encampments in Europe. Yet, search as they might, American archaeologists found no comparable evidence of a Pleistocene-era human presence. But several sites revealed stone artifacts thatsome scholars believed looked similar to the ancient stone tools found in Europe. On the basis of this similarity, these experts claimed the American artifacts must be asold. By the 1890s, however, other scholars had challe...

• First Americans - Canadian History.

  bones and artifacts helped 19th-century archaeologists establish the age of ancient human encampments in Europe. Yet, search as they might, American archaeologists found no comparable evidence of a Pleistocene-era human presence. But several sites revealed stone artifacts thatsome scholars believed looked similar to the ancient stone tools found in Europe. On the basis of this similarity, these experts claimed the American artifacts must be asold. By the 1890s, however, other scholars had challe...

• Native American Art.

  folding, braiding or weaving, could also be sewn onto the hide. The production of decorated clothing and bags increased after contact with Europeans as a greater variety of textiles and other materials became available throughtrade. Imported glass beads inspired native women, who quickly adapted quillwork techniques for the creation of beaded apparel. European curvilinear and floraldesigns of the 19th century proved as meaningful for the native women who worked with them as they were for the non...

• Census.

  Prior to any census, a census agency must develop an accurate list of addresses and maps to ensure that everyone is counted. The U.S. Census Bureau obtainsaddresses primarily from the United States Postal Service and from previous census address lists. It also works closely with state, local, and tribal governments tocompile accurate lists. Finally, census agencies often conduct an extensive marketing campaign before Census Day to remind the general population about theimportance of responding t...

• Qing Dynasty - History.

  The Manchus also dealt with the problem of Russian expansion into northeastern Asia. In 1689 the Treaty of Nerchinsk was signed by an envoy from the Manchu courtand a Russian representing Peter the Great. The treaty, the first between China and a Western country, established territorial boundaries and defined rules ofcommerce for the two powers. Through the mid-18th century, the Manchus continued to consolidate their power. In 1720 the Qing ruler sent forces to fight the Mongols in Tibet and the...

• Wars of Yugoslav Succession.

  of Yugoslav succession was over. In January 1992 members of the European Community (EC; after 1993 the European Union, EU) recognized Slovenia’s independencealong with that of Croatia. The United States and other countries did so shortly thereafter. IV THE WAR IN CROATIA As the Yugoslav army withdrew from Slovenia in July 1991, a second and far more serious conflict erupted in Croatia. But the road to war in Croatia began more than ayear earlier. In April and May 1990 the Croatian Democratic U...

• Wars of Yugoslav Succession .

  of Yugoslav succession was over. In January 1992 members of the European Community (EC; after 1993 the European Union, EU) recognized Slovenia’s independencealong with that of Croatia. The United States and other countries did so shortly thereafter. IV THE WAR IN CROATIA As the Yugoslav army withdrew from Slovenia in July 1991, a second and far more serious conflict erupted in Croatia. But the road to war in Croatia began more than ayear earlier. In April and May 1990 the Croatian Democratic U...

• Holocaust I INTRODUCTION Holocaust, the almost complete destruction of Jews in Europe by Nazi Germany and its collaborators during World War II (1939-1945).

  relation to the Jews. He claimed that the Jews had achieved economic dominance and the ability to control and manipulate the mass media to their own advantage. Hewrote of the need to eradicate their powerful economic position, if necessary by means of their physical removal. IV UNIQUENESS OF NAZI ANTI-SEMITISM The linking of anti-Semitic accusations to race struggle is what made Nazism so genocidal. The Nazis believed the Jews were responsible for what they regarded as thedegeneracy of modern...

• Holocaust .

  relation to the Jews. He claimed that the Jews had achieved economic dominance and the ability to control and manipulate the mass media to their own advantage. Hewrote of the need to eradicate their powerful economic position, if necessary by means of their physical removal. IV UNIQUENESS OF NAZI ANTI-SEMITISM The linking of anti-Semitic accusations to race struggle is what made Nazism so genocidal. The Nazis believed the Jews were responsible for what they regarded as thedegeneracy of modern...

• Saskatchewan (province) - Geography.

  The length of the frost-free season varies within the province. In the southwest, particularly in the valley lands along the South Saskatchewan River, the frost-freeperiod ranges from 150 to 160 days. Regina enjoys about 123 frost-free days, and Saskatoon has about 111. The far north has only from 85 to 95 frost-free days. One important characteristic of Saskatchewan’s climate is the great variability in temperature and precipitation from year to year, which is often critical for agriculture.The...

• Saskatchewan (province) - Canadian History.

  The length of the frost-free season varies within the province. In the southwest, particularly in the valley lands along the South Saskatchewan River, the frost-freeperiod ranges from 150 to 160 days. Regina enjoys about 123 frost-free days, and Saskatoon has about 111. The far north has only from 85 to 95 frost-free days. One important characteristic of Saskatchewan’s climate is the great variability in temperature and precipitation from year to year, which is often critical for agriculture.The...

• Cambodia - country.

  The population of Cambodia is 14,241,640 (2008 estimate). Population growth per year is estimated at 1.8 percent, one of the highest rates in Asia. The rate of infantmortality is also high. The population density is 81 persons per sq km (209 per sq mi), with the densest concentrations on the heavily cultivated central plain. Themountainous regions of the country, where malaria is widespread, are thinly populated, as are the poorly watered northern provinces. During the late 1970s, under thebruta...

• Belgium - country.

  European Union (EU) directives aimed at improving Belgium’s environmental conditions concern water treatment and water quality, both significant issues in such anindustrial center. Before these directives were issued, the Meuse River, a major source of drinking water, had become polluted from steel production wastes. Otherrivers were polluted with animal wastes and fertilizers. However, Belgium failed to meet EU targets set for the early 2000s for protecting its rivers from farm pollutionand for...

• vocabulaire

  2             a fall in love        b split up with   c go out with 3             a fall out              b fall down         c fall in 4             a come on          b get on               c go on 5             a gossip               b headline          c tabloid 6             a get out with   b fall out with    c go out with 3 Complete the text with one word in each gap.                             / 6   I listen to the radio a lot and I often listen to phone-in shows. They can be really fun...

• english history

  He was a Scottish moral philosopher and a pioneer of political economics. Smith studied social philosophy at the University of Glasgow and the University of Oxford. Smith obtained a professorship at Glasgow teaching moral philosophy. Smith returned home and spent the ten years writing The Wealth of Nations , publishing it in 1776. He became famous for this book, which had a profound influence on modern economics and concepts of individual free...

• HISTOIRE DE KEYNE BRITISH

  He was a Scottish moral philosopher and a pioneer of political economics. Smith studied social philosophy at the University of Glasgow and the University of Oxford. Smith obtained a professorship at Glasgow teaching moral philosophy. Smith returned home and spent the ten years writing The Wealth of Nations , publishing it in 1776. He became famous for this book, which had a profound influence on modern economics and concepts of individual free...

• Animal - biology.

  Vertebrates are customarily divided into cold-blooded and warm-blooded animals, but these labels are not very precise. Biologists normally use the terms ectoderm and endoderm to describe temperature regulation more accurately. An ectoderm is an animal whose temperature is dictated by its surroundings, while an endoderm is one that keeps its body at a constant warm temperature by generating internal heat. Reptiles, amphibians, and fish are ectoderms. Although they do not maintain a constant wa...

• Aristotelianism, medieval

  are introduced by the interaction of Aristotle with Jewish, Christian and Islamic religious thinking. The Christianambiguities are perhaps the most familiar. Almost all of the Christian Aristotelians in the Latin West were members ofthe clergy. Most spent their professional lives teaching and writing, not the liberal arts or philosophy, but Christiantheology. It remains controversial whether or to what extent we can find an autonomous or even a textuallydistinguishable Aristotelian p...

• From Sir Gawain and the Green Knight - anthology.

  And she urged it on him eagerly, and ever he refused,And vowed in very earnest, prevail she would not.And she sad to find it so, and said to him then,“If my ring is refused for its rich cost -You would not be my debtor for so dear a thing—I shall give you my girdle; you gain less thereby.”She released a knot lightly, and loosened a beltThat was caught about her kirtle, the bright cloak beneath,Of a gay green silk, with gold overwroght,And the borders all bound with embroidery fine,And this she p...

• Infrared Space Observatory - astronomy.

  know how often these disks occur around stars to help them understand how common it is for planets to form. ISO found several previously unknown stars with disks.ISO also detected olivine, a silicate mineral found in Earth’s own rocky mantle, in the comet Hale-Bopp, which was visible from Earth in 1996 and 1997. The discovery ofolivine in the comet suggests that the comet and Earth have a similar origin. The satellite also detected the first evidence of water outside of the solar system inplanet...

• Titian.

  Flaying of Marsyas (circa 1570-76, Kroměříž, Czech Republic) and the Nymph and Shepherd (circa 1574, Kunsthistorisches Museum). Here colors are more subdued, but the turbulence of the brushwork, hardly matched again until 20th-century painting, almost submerges the form entirely. These late mythological paintings, whichTitian called poesie (poems), stand among the most formidable statements ever made of the irresistible, elemental powers of nature. These works are paralleled by a sequence...