683 résultats pour "used"

• Nova Scotia - Canadian History.

  summer. Nova Scotia receives an average of more than 1,140 mm (45 in) of rain annually, with the Atlantic shore receiving 1,400 mm (55 in) or more. Most of the provincereceives about 1,900 mm (about 70 in) of snow, and considerable winter precipitation comes in the form of rain or ice storms. The average temperature in January, thecoldest month, is generally about -4°C (about 25°F) near the coast and somewhat colder toward the interior. The average temperature in July, the hottest month, isabout...

• Bulgaria - country.

  E Climate Most of Bulgaria has a continental climate, with cold winters and hot summers. The climate in general is more severe than in other European areas of the samelatitudes, and the average annual temperature range is greater than that of neighboring countries. Severe droughts, frosts, winds, and hail storms frequently damagecrops. A Mediterranean climate, with dry summers and mild, humid winters, prevails in the valley of the southwestern Rhodope Mountains; the northern limit of theclimati...

• 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...

• Montana - geography.

  (191 sq mi), is Montana’s largest lake, and the largest natural freshwater lake in the contiguous states west of the Mississippi River. C Climate Climatic regions in Montana coincide roughly with the two major physiographic regions. In western Montana, as compared with the eastern plains area, winters tend tobe milder while summers are cooler. Precipitation is more evenly distributed throughout the year in the west, and it is cloudier and somewhat more humid in all seasons.In addition, the grow...

• Montana - USA History.

  (191 sq mi), is Montana’s largest lake, and the largest natural freshwater lake in the contiguous states west of the Mississippi River. C Climate Climatic regions in Montana coincide roughly with the two major physiographic regions. In western Montana, as compared with the eastern plains area, winters tend tobe milder while summers are cooler. Precipitation is more evenly distributed throughout the year in the west, and it is cloudier and somewhat more humid in all seasons.In addition, the grow...

• Vietnam - country.

  E Natural Resources Vietnam’s most valuable natural resource is its land, particularly the fertile, alluvial soils in the Red and Mekong deltas. Some 29 percent of the land is currently beingcultivated. Vietnam has some valuable mineral resources, including gold, iron, tin, zinc, phosphate, chromite, apatite, and anthracite coal. Most deposits are located in the northernpart of the country. Few attempts were made to extract these minerals until the French takeover of Vietnam at the end of the 1...

• Greece - country.

  minerals, such as chromium, copper, uranium, and magnesium, are relatively small. Greece’s small petroleum deposits, located under the Aegean Sea near the island ofThásos, are rapidly being depleted. There are no significant reserves of natural gas. Greece’s forests, probably abundant in ancient times, have been significantly depleted. Subsequent soil erosion has made reforestation efforts difficult. Although muchof Greece’s soil is rocky and dry, the country’s mountains are interspersed with sm...

• Ohio - geography.

  conflict with modified Gulf air and causing frontal or cyclonic storms. Gulf air is dominant in summer. In fall, polar air passing over Lake Erie is modified, delaying thekilling frost along the adjacent shoreline. C1 Temperatures The mean annual temperatures for the state range from 9° C (48° F) in the northeast to 13° C (55° F) in the south. Average January temperatures range from -4° C(24° F) in the west to 2° C (35° F) in the south. July averages are 24° C (76° F) in the south and 23° C (73...

• Ohio - USA History.

  conflict with modified Gulf air and causing frontal or cyclonic storms. Gulf air is dominant in summer. In fall, polar air passing over Lake Erie is modified, delaying thekilling frost along the adjacent shoreline. C1 Temperatures The mean annual temperatures for the state range from 9° C (48° F) in the northeast to 13° C (55° F) in the south. Average January temperatures range from -4° C(24° F) in the west to 2° C (35° F) in the south. July averages are 24° C (76° F) in the south and 23° C (73...

• Israel (country) - country.

  harbor in the northern part of the country, and Ashdod, an artificial deepwater port to the south, serve as the main seaports on the Mediterranean. The port of Elat onthe Gulf of Aqaba provides Israel’s only access to the Red Sea, making it extremely important to the country’s shipping interests. D Natural Resources Although much of Israel’s desert regions contain poor soils, the northern Negev, the coastal plains, and the interior valleys provide patches of productive soils. Anestimated 18 per...

• Mars Pathfinder - astronomy.

  Pathfinder and Sojourner also gathered engineering data for planning future Mars missions. Pathfinder entered Mars's atmosphere without first stopping in Mars orbit,an approach likely to be used by future landers, and its previously untried airbag system performed flawlessly. Sojourner needed about three months to traverse lessthan 90 m (less than 300 ft), but demonstrated that rovers can explore Mars. Engineers predict that the next generation of Mars rovers will be able to travel thousandsof k...

• Maya Civilization - history.

  III CLASSIC PERIOD Maya Ruins, El SalvadorThe Maya occupied a large part of Central America, and their civilization reached its height between ad 300 and 900. Many ruins ofthe ancient civilization have been excavated in El Salvador, including huge limestone pyramids.Susan McCartney/Photo Researchers, Inc. Classic Maya civilization became more complex in about AD 300 as the population increased and centers in the highlands and the lowlands engaged in both cooperation and competition with each o...

• WHY I'M NOT WHERE YOU ARE 5/21/63   To my unborn child:

  point at,"The regular, please," orperhaps, "AndIwouldn't saynotosomething sweet,"whenmyonly friend, Mr.Richter, suggested, "Whatifyou tried tomake asculpture again?What's theworst thingthatcould happen?" Ishuffled halfway into thefilled book: "I'mnotsure, butit'slate." Iwent through hundreds ofbooks, thousands ofthem, theywere allover the apartment, Iused them asdoorstops andpaperweights, Istacked themifIneeded toreach something, Islid them under thelegs ofwobbly tables,Iused them astrivets andc...

• Public Finance.

  obtained by borrowing instead of taxation—can be helpful for the economy. For example, when unemployment is high, the government can undertake projects that useworkers who would otherwise be idle. The economy will then expand because more money is being pumped into it. However, deficit spending also can harm theeconomy. When unemployment is low, a deficit may result in rising prices, or inflation. The additional government spending creates more competition for scarce workersand resources and thi...

• Expressionism I INTRODUCTION Auguste Rodin Regarded as the foremost sculptor of the 19th and 20th centuries, French artist Auguste Rodin captured both dynamic movement and inner psychological states.

  Improvisation 28 (second version)Improvisation 28 (second version) was painted by Russian artist Wassily Kandinsky in 1912. Kandinsky used energeticcolor and form to express the spiritual content of his work. He was also a musician and saw a connection between thevisual arts and music, which he attempted to convey in paintings such as this one.© 2008 Artists Rights Society (ARS), New York / ADAGP, Paris./Bridgeman Art Library, London/New York A new phase of German expressionism called Die Neue...

• Owl - biology.

  Among the largest species of typical owls are the eagle owls. They have tufts of feathers on their heads that are called “ears.” The great horned owl is the only eagleowl found in the Americas. It is about 60 cm (25 in) in length with a wingspan of 1.4 m (60 in). Numerous species of eagle owls inhabit Europe, Africa, and Asia. Mostwidely distributed is the northern eagle owl, found from Scandinavia and Spain to Japan. It is about 71 cm (28 in) long with a wingspan of about 2m (72 in). Nearly asl...

• Isotope - chemistry.

  depends on the fact that when water undergoes electrolysis, the lighter hydrogen isotope tends to come off first, leaving behind a residue of water that is enriched inthe heavier isotope. D Gaseous Diffusion This and the electromagnetic method of separating isotopes of uranium afforded the first large-scale separation ever achieved. The problem of separating uranium-235from uranium-238 arose in 1940 after the demonstration of the susceptibility of the 235 isotope to fission by neutrons. Uranium...

• I did not know if the baby was making me sick or if your grandfather was.

  For himself? I pulled thebook fromhim.Itwas wetwith tears running downthepages, asifthe book itselfwere crying. Hehid hisface in his hands. Letme see you cry,Itold him. I do not want tohurt you, hesaid byshaking hishead lefttoright. It hurts mewhen youdonot want tohurt me,Itold him. Letme see you cry. He lowered hishands. Onone cheek itsaid YESbackward. Onone cheek itsaid NObackward. Hewas stilllooking down. Now thetears didnot run down hischeeks, butfellfrom hiseyes tothe ground. Letme see you...

• Drawing I INTRODUCTION Drawing, delineation of form upon a surface, usually a plane, by means of lines and tints or shading.

  In the monasteries of medieval Europe, religious texts were inscribed on parchment, then embellished with initial letters, decorative borders, and miniature scenes. InRomanesque Europe, drawings served as models to be copied for such manuscript illumination and also as cartoons ( see Cartoon), or studies, for frescoes, sculpture, and other arts. Subjects were usually treated as stylized symbols of religious truths. This viewpoint was countered in the Gothic period; the change was reflected in th...

• Arab Music I INTRODUCTION Umm Kulthum Egyptian singer Umm Kulthum was revered throughout Egypt, North Africa, and the Near East for her powerful voice and improvisational skill.

  The rhythmic structure of Arab music is similarly complex. Rhythmic patterns have up to 48 beats and typically include several downbeats (called dums ) as well as upbeats (called taks) and silences, or rests. To grasp a rhythmic mode, the listener must hear a relatively long pattern. Moreover, the performers do not simply play the pattern; they elaborate upon and ornament it. Often the pattern is recognizable by the arrangement of downbeats. The Rhythm in Arab Music illustration demonstratesa...

• Henry VIII I INTRODUCTION Henry VIII (1491-1547), king of England (1509-1547), the image of the Renaissance king as immortalized by German artist Hans Holbein, who painted him hands on hips, legs astride, exuding confidence and power.

  that was completed by 1540. The crown then took possession of all their property, paying small pensions to the approximately 10,000 monks and nuns who weredeprived of their homes. In a reversal of roles, many towns were forced to assist the same people who had once provided charity to the less fortunate. To pay for hiscontinued wars, Henry sold the former monastic lands to nobles and gentry, who thereby gained an interest in the success of Henry’s reformation and becamedependent upon the king. T...

• Henry VIII.

  that was completed by 1540. The crown then took possession of all their property, paying small pensions to the approximately 10,000 monks and nuns who weredeprived of their homes. In a reversal of roles, many towns were forced to assist the same people who had once provided charity to the less fortunate. To pay for hiscontinued wars, Henry sold the former monastic lands to nobles and gentry, who thereby gained an interest in the success of Henry’s reformation and becamedependent upon the king. T...

• Henry VIII .

  that was completed by 1540. The crown then took possession of all their property, paying small pensions to the approximately 10,000 monks and nuns who weredeprived of their homes. In a reversal of roles, many towns were forced to assist the same people who had once provided charity to the less fortunate. To pay for hiscontinued wars, Henry sold the former monastic lands to nobles and gentry, who thereby gained an interest in the success of Henry’s reformation and becamedependent upon the king. T...

• Geography - Geography.

  Geographers have developed a standard pattern of map symbols for identifying such cultural features as homes, factories, and churches; dams, bridges, and tunnels;railways, highways, and travel routes; and mines, farms, and grazing lands. C Analyzing Geographic Information Techniques that use mathematics or statistics to analyze data are known as quantitative methods. The use of quantitative methods enables geographers to treat a largeamount of data and a large number of variables in an objectiv...

• 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...

• Native American Literature I INTRODUCTION Leslie Marmon Silko Native American writer Leslie Marmon Silko is perhaps best known for her first novel, Ceremony (1977), a coming-of-age story about a young man of mixed Native American and white ancestry.

  SequoyahNative Americans did not use a complex written language before the immigration of Europeans to the Americas. In theearly 1820s the Cherokee leader Sequoyah developed an alphabet and written language for his native tongue. ManyCherokee learned the new written language readily, and in 1828 they published the first Native American newspaper,written in both Cherokee and English.THE BETTMANN ARCHIVE Before Native Americans came into contact with Europeans, many tribes supplemented the spoken...

• Collectibles and Collecting.

  common blond and thus commands a higher price. If there are different variations to a collectible, the least common one is usually worth more. Often there areinteresting stories behind rarities, such as the highly sought-after 1909 Honus Wagner baseball card. At that time tobacco companies manufactured and distributedbaseball cards, and when the antitobacco Wagner complained, his card was pulled from production. Very few copies in good condition have ever been found. C Age Age is often an indic...

• Fruit - biology.

  from a flower with several pistils. The ovary may have a single compartment, or carpel, which houses the ovule or ovules. Or the ovary may consist of two or morecarpels, each of which may contain one or more ovules. A drupe develops from an ovary with a single carpel and is characterized by an edible exocarp and mesocarp and an inedible, hard endocarp, or pit that encloses asingle seed. Cherries, peaches, apricots, and plums are examples of drupes. Almonds also are classified as drupes, but in a...

• Millennium.

  Postmillennialism, also referred to as progressive millennialism, interprets the Bible less literally than premillennialism does. Postmillennialists regard the millennium as a1,000-year reign of Christian ideals that will end with the return of Christ. In this view, the millennium will not start suddenly through an apocalypse, but graduallythrough the efforts of human beings. Postmillennialists believe that through social reform and by upholding Christian ideals, the kingdom of God will be built...

• Native American Literature.

  Many Native American writers of the 19th century wrote histories of their tribes. One tribal historian was David Cusick (Tuscarora), whose Sketches of Ancient History of the Six Nations (1827) was the first published tribal history. Tribal histories explained the deep ties that tribes had to their ancestral homelands. Beginning in the 18th century, these ties took on special meaning because the United States government began removing Native Americans from their traditional lands. These removal...

• Extrasolar Planets - astronomy.

  When a planet passes in a front of the star it orbits—an event called a transit—it causes a small dip in the brightness of the star. Measuring the slight change in thebrightness can be used not only to directly detect a planet, but to determine its size and orbit. However, the planet needs to orbit in a plane that lies in a telescope’sline of sight on the star. Despite long odds, Earth-based telescopes have detected and studied a few exoplanets using this method. The first space telescope design...

• Anatomy.

  The body defends itself against foreign proteins and infectious microorganisms by means of a complex dual system that depends on recognizing a portion of the surfacepattern of the invader. The two parts of the system are termed cellular immunity, in which lymphocytes are the effective agent, and humoral immunity, based on theaction of antibody molecules. When particular lymphocytes recognize a foreign molecular pattern (termed an antigen), they release antibodies in great numbers; other lymphocy...

• Ocean and Oceanography.

  of sediment. When studied in sedimentary core samples, which can represent many millions of years of deposits, they provide a detailed and continuous history of theearth’s environmental changes. The record is particularly informative for the most recent 2 million to 5 million years, during which major fluctuations in global climatehave occurred. Successive ice ages can be traced by the relative scarcity or abundance of the shells of warm-water and cold-water diatoms in various layers of asedimen...

• Ocean and Oceanography - Geography.

  of sediment. When studied in sedimentary core samples, which can represent many millions of years of deposits, they provide a detailed and continuous history of theearth’s environmental changes. The record is particularly informative for the most recent 2 million to 5 million years, during which major fluctuations in global climatehave occurred. Successive ice ages can be traced by the relative scarcity or abundance of the shells of warm-water and cold-water diatoms in various layers of asedimen...

• Athens (Greece) - geography.

  At the heart of the modern city is Syntagma (Constitution) Square, located east of the Acropolis. The square is bordered by the national Parliament Building, originally aroyal palace completed in 1842 for King Otto I. Nearby is the Tomb of the Unknown Soldier, which features a daily changing of the guard. Several of the city’s principalhotels as well the offices of major banks and airline companies also face the square. Behind the Parliament Building is the National Gardens, a public park that i...

• Tiger - biology.

  have a simple digestive system designed to process meat so that the nutrients can be readily absorbed into the bloodstream. With the exception of white tigers, which have blue eyes, all tigers have yellow eyes. Tigers mainly use vision to find prey. Although tigers see about as well as humansduring the day, their large eye openings gather more light than do human eyes, making tiger night vision far superior to that of humans. In addition, a special structurein the tiger’s eye, called the tapetu...

• Alcoholism.

  Although a consensus is growing among health professionals that alcohol dependence is a disease, society’s attitudes toward individuals with drinking problems remainambivalent and confused. Until the mid-20th century, the typical picture of the alcoholic was of someone without steady employment, unable to sustain familyrelationships and most likely in desperate financial straits. But this stereotype was largely dispelled when highly respected people publicly admitted their alcoholdependence and...

• Economics.

  Malthus, nature's check was “positive”: “The power of population is so superior to the power of the earth to produce subsistence for man, that premature death must insome shape or other visit the human race.” The shapes it took included war, epidemics, pestilence and plague, human vices, and famine, all combining to level theworld's population with the world's food supply. The only escape from population pressure and the horrors of the positive check was in voluntary limitation of population, no...

• Lithuania - country.

  pollution. III PEOPLE Ethnic Lithuanians constitute about 80 percent of the country’s population. The proportion of Lithuanians increased slightly in the first years after the dissolution of theSoviet Union—many Lithuanians returned to their homeland from that country and abroad while some Russians, Ukrainians, and Belarusians left the country. Russiansand Poles constitute the country’s largest minority groups, each accounting for roughly 7 percent of the population. Jews were the largest mino...

• United States House of Representatives.

  Because of the high cost of elections and the short two-year term of office, members of the House campaign almost constantly. They spend much of their time raisingcampaign funds, and they frequently return to their districts to keep in touch with voters. Because the elections are so frequent, House members tend to pay closeattention to how their votes in Congress will be seen in the short term. House members tend to come from wealthier family backgrounds than average Americans. Few working class...

• Canadian Parliament.

  government’s legislative program. Members of Commons can also present a motion in response to the Budget Speech, which reviews the government’s economicrecord, taxation, and expenditure plans, and to Supply Motions, which concern budgets for individual departments. If a majority of MPs support a no-confidence motion,the government must resign. Also, if Parliament rejects a significant government proposal, the government is expected to resign and request the governor-general to call an election....

• Bolivia - country.

  E Plants and Animals Because of the wide variations in elevation, plant and animal species of nearly every climatic zone are found in Bolivia. A coarse grass, called ichu, grows on the largelybarren high plateau in the west. Para rubber trees, more than 2,000 species of hardwood trees, and vanilla, sarsaparilla, and saffron plants are common in the tropicalforests of the east. The llama, found chiefly on the Altiplano, is an efficient beast of burden. Alpacas and vicuñas also inhabit the platea...

• Spanish Empire.

  Spain’s royal government quickly imposed its own officials, first to collect taxes and then to administer the colony. Its goal was to assert royal control over both settlersand indigenous peoples. In Spain the government established a House of Trade to supervise colonial affairs and to oversee, license, and tax all trade and commerce. Asthe royal government asserted more authority over colonial activities, Columbus lost effective power, and was eventually replaced by other colonial governors. Wi...

• Spanish Empire .

  Spain’s royal government quickly imposed its own officials, first to collect taxes and then to administer the colony. Its goal was to assert royal control over both settlersand indigenous peoples. In Spain the government established a House of Trade to supervise colonial affairs and to oversee, license, and tax all trade and commerce. Asthe royal government asserted more authority over colonial activities, Columbus lost effective power, and was eventually replaced by other colonial governors. Wi...

• Anthropology.

  humans, such as tools, pottery, and buildings) and human fossils (preserved bones). They also examine past environments to understand how natural forces, such as climate and available food, shaped the development of human culture. Some archaeologists study cultures that existed before the development of writing, a time knownas prehistory . The archaeological study of periods of human evolution up to the first development of agriculture, about 10,000 years ago, is also called paleoanthropology....

• Switzerland - country.

  formation over higher elevations. The wind reverses direction about sundown and moves down the valley as a cool downdraft. The foehn, which occurs during the wintermonths, is a dry and relatively warm airflow that is drawn northward over the Alps. The foehn can quickly melt snow and ice, increasing the risk of mudslides andavalanches. D Natural Resources Waterpower is the chief natural resource of Switzerland. The principal source of water is runoff from the considerable annual precipitation th...

• Hinduism.

  they do not share any basic terms. B Sanātana Dharma Evidence from inscriptions indicates that Hindus had begun to use the word dharma for their religion by the 7th century. After other religions of Indian origin also began to use this term, Hindus then adopted the expression san ātana dharma to distinguish their dharma from others. The word san ātana, meaning immemorial as well as eternal, emphasized the unbroken continuity of the Hindu tradition in contrast to the other dharmas . The Bu...

• Ontario - Geography.

  governed Ontario’s initial settlement and development. The province’s most important river is the St. Lawrence. Its route was much improved and enlarged by dredgingand canal building in the mid-20th century. This enabled large ocean-going vessels to reach Great Lake ports ( see St. Lawrence Seaway). The Ottawa River was an important early route to the interior for fur traders and timber merchants. The Niagara River, because of its falls, is a great center of hydroelectric power as well as aninte...

• Ontario - Canadian History.

  governed Ontario’s initial settlement and development. The province’s most important river is the St. Lawrence. Its route was much improved and enlarged by dredgingand canal building in the mid-20th century. This enabled large ocean-going vessels to reach Great Lake ports ( see St. Lawrence Seaway). The Ottawa River was an important early route to the interior for fur traders and timber merchants. The Niagara River, because of its falls, is a great center of hydroelectric power as well as aninte...