2538 résultats pour "área"

• Aerospace Medicine - astronomy.

  medically as aeroembolism and popularly as the bends, leads to confusion, paralysis, or neurocirculatory collapse. The most characteristic symptoms of the bends arepain in the large joints resulting from pressure of the gas on tendons and nerves, together with spasm of the blood vessels. Preflight inhalation of pure oxygen toeliminate nitrogen from the system has proved valuable as a preventive measure. Rapid decompression, resulting from accidental failure at high altitudes of thepressure withi...

• Radar.

  gathers the weak returning radar signals and converts them into an electric current. Because a radar antenna may both transmit and receive signals, the duplexerdetermines whether the antenna is connected to the receiver or the transmitter. The receiver determines whether the signal should be reported and often does furtheranalysis before sending the results to the display. The display conveys the results to the human operator through a visual display or an audible signal. B1 The Antenna The rec...

• Georgia (country) - country.

  1917. During the subsequent Soviet period, religious practice was strongly discouraged because the Soviet state was officially atheistic; however, the GeorgianOrthodox Church was allowed to function openly. Orthodox Christianity is the religion of about 58 percent of the Georgian population. Muslims represent about 19 percent of the country’s population, with ethnicAzerbaijanis, Kurds, and Ajars comprising the principal Muslim groups. Ajars are ethnic Georgians who converted to Islam in the 17th...

• Schizophrenia.

  alcohol than other people. The use of alcohol and drugs often worsens the symptoms of schizophrenia, resulting in relapses and hospitalizations. IV CAUSES Schizophrenia appears to result not from a single cause, but from a variety of factors. Most scientists believe that schizophrenia is a biological disease caused by geneticfactors, an imbalance of chemicals in the brain, structural brain abnormalities, or abnormalities in the prenatal environment. In addition, stressful life events maycontri...

• 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...

• Ottawa (city, Ontario) - geography.

  National Gallery of Canada, OttawaThe National Gallery of Canada, in Ottawa, houses the foremost collection of Canadian art. Made of glass and granite, it was designedby Canadian-trained architect Moshe Safdie.Wolfgang Kaehler The National Gallery of Canada, designed by Israeli-born, Canadian-trained architect Moshe Safdie, is one of 29 museums in Ottawa. It houses the world’s largest collectionof Canadian art. Across the Ottawa River in Hull is the Canadian Museum of Civilization, which has ext...

• Rice - biology.

  V HISTORY According to the most widely accepted theory, rice cultivation originated as early as 10,000 BC in Asia. Archaeological evidence shows that rice was grown in Thailand as early as 4000 BC, and over the centuries spread to China, Japan, and Indonesia. By 400 BC rice was cultivated in the Middle East and Africa. The invading armies of Alexander the Great probably introduced rice to Greece and nearby Mediterranean countries around 330 BC. Rice was brought to the American colonies in t...

• Somalia - country.

  A Agriculture Livestock raising is the principal occupation in Somalia. The size of livestock herds began to recover in the mid-1990s after falling during the country’s civil war. Sheepand goats are the most numerous livestock, with smaller numbers of cattle. The principal crops grown are corn, sorghum, sugarcane, cassava, and bananas. B Forestry and Fishing While most wood is cut for fuel, Somalia’s major forestry export products before the 1990s were frankincense and myrrh. Fish is an import...

• Great Lakes - geography.

  Boats on Lake MichiganLake Michigan is the only one of the five Great Lakes that is entirely within the borders of the United States. It is used for commercialshipping as well as recreation. This view of the lake includes the city of Chicago in the background.Illinois Department of Commerce and Community Affairs The Great Lakes, interconnected by rivers, straits, and canals, together form one of the world’s busiest shipping arteries. The lakes are linked with the Atlantic Ocean via theSt. Lawren...

• 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...

• Excerpt from The Merchant of Venice - anthology.

  A weight of carrion flesh than to receiveThree thousand ducats. I'll not answer that,But say it is my humour. Is it answered?What if my house be troubled with a rat,And I be pleased to give ten thousand ducatsTo have it baned? What, are you answered yet?Some men there are love not a gaping pig,Some that are mad if they behold a cat,And others, when the bagpipe sings i'th'nose,Cannot contain their urine; for affection,Master of passion, sways it to the moodOf what it likes or loathes. Now for you...

• Relativity - astronomy.

  beta, for example, might be as large as 0.5, and the mass of the electron doubled. The mass of a rapidly moving electron could be easily determined by measuring thecurvature produced in its path by a magnetic field; the heavier the electron, the greater its inertia and the less the curvature produced by a given strength of field ( see Magnetism). Experimentation dramatically confirmed Einstein's prediction; the electron increased in mass by exactly the amount he predicted. Thus, the kinetic ener...

• Medical Ethics.

  medical profession. In recent years, however, the field of medical ethics has struggled to keep pace with the many complex issues raised by new technologies for creating and sustaininglife. Artificial-respiration devices, kidney dialysis, and other machines can keep patients alive who previously would have succumbed to their illnesses or injuries.Advances in organ transplantation have brought new hope to those afflicted with diseased organs. New techniques have enabled prospective parents to con...

• Hardware (computer).

  Magnetic tape drives use magnetic tape similar to the tape used in VCR cassettes. Tape drives have a very slow read/write time, but have a very high capacity; in fact,their capacity is second only to hard disk drives. Tape drives are mainly used to back up data. Compact disc drives store information on pits burned into the surface of a disc of reflective material ( see CD-ROM). CD-ROMs can store up to 737 megabytes (MB) of data. A Compact Disc-Recordable (CD-R) or Compact Disc-ReWritable (CD-RW)...

• Dentistry.

  Together with dentists, dental hygienists and dental assistants make up the team that provides dental care to patients. Hygienists record patient medical histories, suchas blood pressure and pulse. They clean teeth, apply sealants and fluoride treatments, teach patients sound oral hygiene practices, and often assist with X rays. Manyhygienists receive a two-year associate degree, while others may choose to enroll in a four-year program at a university or in a master’s degree program. There are25...

• Paris (city, France) - geography.

  Théâtre Musical de Paris and the Théâtre de la Ville. Just north of the Hôtel de Ville is the Pompidou Center, also known as Beaubourg, an arts complex devoted to modern and contemporary art and design. The structure,in steel and glass and featuring brightly colored, exposed pipes and ducts, is the work of Italian architect Renzo Piano and British architect Richard Rogers. Itscontroversial pop-art design contrasts sharply with the overall gray hue of the city, and was criticized by many followin...

• Miami (Florida) - geography.

  VI EDUCATIONAL AND CULTURAL INSTITUTIONS Colleges and universities in the area include the University of Miami, Florida International University, Barry University, St. Thomas University, and Florida MemorialCollege. Miami-Dade Community College, one of the nation’s largest two-year colleges, has six campuses in the region. Leading museums include the Historical Museumof Southern Florida, the Miami Museum of Science, the Miami Art Museum, the Lowe Art Museum on the campus of the University of M...

• Berlin - geography.

  boroughs of Wedding and Tiergarten. Other important central areas include Kreuzberg and Friedrichshain, now united as the Friedrichshain-Kreuzberg borough, andPrenzlauer Berg, now incorporated as a part of the Pankow borough. Tiergarten contains a large wooded park, a zoo, and a variety of public monuments as well as the large, modern Congress Hall and the Reichstag building, which wasbuilt from 1884 to 1894. The Reichstag and the surrounding area have undergone renovation to accommodate the Bun...

• United States Government.

  Article II establishes an executive department headed by a president and vice president. The article further describes the powers of the offices, the manner of election,and the qualifications for office. Of special significance is the president’s constitutional role as commander of the nation’s armed forces, which assures civilian controlover the military. Because the president is the head of the armed forces and only Congress can declare war, the authority of the military is diffused and its po...

• Executive Branch.

  Popular pressure for increased regulation of businesses increased in the early 20th century. This pressure led to laws such as the Pure Food and Drug Acts, and the1906 Meat Inspection Act. Pressure for reform also led to creation of the Federal Trade Commission in 1914 to prevent unfair business practices. Worldwide depressionin the 1930s brought new demands that government take a more activist role in regulating businesses, protecting workers, and ensuring national economic stability. Aspart of...

• Suicide.

  C Sociological Theories Most social scientists believe that a society’s structure and values can influence suicide rates. French sociologist Émile Durkheim argued that suicide rates are related tosocial integration —that is, the degree to which an individual feels part of a larger group. Durkheim found suicide was more likely when a person lacked social bonds or had relationships disrupted through a sudden change in status, such as unemployment. As one example of the significance of social bond...

• Environment.

  escape into space of the infrared energy radiated back out by Earth. This process is referred to as the greenhouse effect. These gases, primarily carbon dioxide,methane, nitrous oxide, and water vapor, insulate Earth’s surface, helping to maintain warm temperatures. Without these gases, Earth would be a frozen planet with anaverage temperature of about -18°C (about 0°F) instead of a comfortable 15°C (59°F). If the concentration of these gases rises, they trap more heat within theatmosphere, caus...

• Salt Lake City - geography.

  Mormon Temple, Salt Lake CitySalt Lake City is the contemporary center of the Mormon church, officially The Church of Jesus Christ of Latter-day Saints. The city’sTemple Square contains the impressive Mormon Temple, shown here. The temple was completed in 1893 after 40 years ofconstruction. Its six towers rise about 67 m (about 220 ft) in the air.Tom Dietrich/ALLSTOCK, INC. Salt Lake City has been at the forefront of education in Utah since 1850, when the University of Deseret was founded. Renam...

• Aboriginal Australians - history.

  Current archaeological evidence suggests that human occupation of Australia began around 50,000 to 60,000 years ago. The first settlers are believed to havemigrated from Southeast Asia in gradual stages, by way of the islands of Indonesia. Around 50,000 years ago sea levels were as much as 120 m (390 ft) lower thanthey are today, and Australia was joined with New Guinea and Tasmania to form one giant landmass called Sahul, or Greater Australia. Scholars believe that the firstmigrants to Sahul ca...

• Winnipeg - geography.

  city of the province. The city is also the site of the University of Winnipeg.Tom McHugh/Photo Researchers, Inc. Winnipeg grew up around the district called The Forks, at the river junction. For many years this historic site was covered by railroad yards, but in recent years it has beenredeveloped as a heritage park and recreation center. Winnipeg also has an impressive collection of pre-1914 buildings, especially in the Exchange District, with itswarehouses and office blocks. Old Market Square,...

• Library of Congress.

  manuscripts, books, and films. The Digital Library’s eventual goal is to make available 80 million items from the Library of Congress’s collection that are not easilyavailable elsewhere. V ORGANIZATION AND FUNDING The librarian of Congress serves as the director of the institution. Tradition, politics, and strong personalities have shaped the function of this office. Although the Libraryof Congress was established in 1800, the office of librarian was not created until passage of a law in 1802....

• Tornado.

  In winter, tornado activity is usually confined to the Gulf Coastal Plain. In spring, the most active tornado season, tornadoes typically occur in central Tornado Alley andeastward into the Ohio Valley. In summer, most tornadoes occur in a northern band stretching from the Dakotas eastward into Pennsylvania and southern New YorkState. The worst tornado disasters in the United States have claimed hundreds of lives. The Tri-State Outbreak of March 18, 1925, had the highest death toll: 740 people d...

• Yangtze - geography.

  Yangtze Gorges, ChinaThe Yangtze Gorges, also known as the Three Gorges, once drew many tourists with their scenic beauty. However, the Three GorgesDam that was constructed in the early 21st century raised the level of the Yangtze River upstream, forming a deep reservoir thatflooded the gorges.Dean Conger/Corbis The Yangtze originates in the mountains of southwestern Qinghai Province, located in the northern Tibetan Plateau. The river has three headwaters, the highest of whichdescends from an el...

• Tunisia - country.

  mixture of Berber and Arab stock, and they regard themselves as Arabs. Nearly everyone speaks Arabic. The population of Tunisia is concentrated in the coastal plain. It is fairly dense in the hilly north, but the arid plateau, basin, and south are thinly settled. About two-thirds of the country’s people live in urban areas. A Principal Cities The capital and largest city of Tunisia is the seaport of Tunis. Other important cities include Sfax, a port and center of trade on the eastern coast; Sūs...

• Jane Austen.

  years later.) Mansfield Park is Jane Austen’s most ambitious novel—in length, in variety of characterization, and in the scope of its theme. It centers on the effects of upbringing on personal morality in three families—the middle-class Bertrams, the fashionable Crawfords, and the impoverished Prices. Austen has been praised for her presentation ofthe complex relations between the members of the families, but as in Sense and Sensibility, she frustrates the expectations of her readers that the...

• menon ou la vertu

  A N G L A I S 2/6 04 1 CGS 08 01 CLASSES DE PREMIÈRE A. READING COMPREHENSION (08 points) I. Refer to the text to reorder the following ideas ch ronologically : (02 points) 1. Not a simple product 1. ……………………… 2. Drive for profit 2. ……………………… 3. Need for dialogue 3. ……………………… 4. A promising market 4. ……………………… II. Say whether the following statements are TR...

• Poker.

  After the ante and the initial deal, the first round of betting starts with the player to the left of the dealer. This bettor can check (make no bet), make a bet, or fold. To stay in the game, subsequent bettors must call (match the current bet) or raise (increase the total bet). A round of betting ends when no player makes a further bet or a set limit of turns around the table has been reached. In the next round of betting, the player to the left of the bettor that started the last round o...

• ?stanbul - geography.

  İstanbul hosts a number of annual cultural events. The İstanbul Cultural Festival, held in the summer, offers music and dance performances in more than 50 venuesthroughout the city, including outdoors at Rumelihisar ı. The city also hosts a summer jazz festival. Turkey is one of the world’s largest producers of motion pictures, anda highly regarded international film festival takes place in İstanbul during the early months of the year. V RECREATION With increasing modernization, recreation is...

• First Aid.

  IV SEVERE BLEEDING The presence of blood over a considerable area of a person’s body does not always indicate severe bleeding. The blood may ooze from multiple small wounds or besmeared, giving the appearance of more blood than is actually present. The rate at which blood is lost from a wound depends on the size and kind of blood vesselruptured. Bright red, spurting blood indicates injury to an artery while welling or steadily flowing, dark red blood indicates injury to a vein. Welling or spur...

• 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...

• Ancient Egypt.

  around 4500 BC. The style and decoration of the pottery found at these sites differ from those of pottery found in Upper Egypt. The northern type eventually fell out of use. Other differences between the peoples in Upper Egypt and Lower Egypt include the nature of their architecture and the arrangements for burial of the dead, thelatter perhaps signifying differing religious beliefs. B Unification and Early Dynastic Period By 3500 BC, the settlement of Hierakonpolis, located on the west bank...

• Moscow (city, Russia) - geography.

  V RECREATION About 30 percent of Moscow’s territory is occupied by parks and public gardens, which were important elements of Soviet city planning. Gorky Park, which providesactivities such as amusement rides and boating, sits on the right bank of the Moscow River; the park’s display of a retired Soviet space shuttle dominates the riverside.The Moscow Zoo is located just west of the city center. The Botanical Gardens, administered by the Russian Academy of Sciences, offers a diverse display of...

• Homosexuality.

  that “the history of our nation has demonstrated that separate is seldom, if ever, equal,” in affirming that homosexuals are entitled to the same rights of marriage asheterosexuals. On May 17, 2004, same-sex marriages became legal in Massachusetts, and authorities there began to marry gay couples. State legislators pledged toamend the state constitution to ban gay marriage but allow civil unions. Such an amendment would require voter approval. A growing number of local governments and private co...

• Italia - geografía.

  La flora de las tierras bajas de la parte central y meridional de Italia es típicamente mediterránea, con presencia de olivos, naranjos, limoneros, palmeras y cidros. En lazona sur también son característicos la higuera, la palmera datilera, el granado y el almendro, además de la caña de azúcar y el algodón. La vegetación de los montesApeninos es similar a la de Europa central, con abundancia de castaños, cipreses y robles en las laderas más bajas, mientras que las zonas situadas a mayor altura...

• Stone Age.

  limestone, quartzite, and indurated shale. Ground stone tools could be made on a wider range of raw material types, including coarser grained rock such as granite. Flaking produces several different types of stone artifacts, which archaeologists look for at prehistoric sites. The parent pieces of rock from which chips have beendetached are called cores, and the chips that have been removed from cores are called flakes. A flake that has had yet smaller flakes removed from one or more edgesin orde...

• Theater I INTRODUCTION The Art of Theater BBC Worldwide Americas, Inc.

  Theater at EpidaurusAncient Greek dramas were performed in open-air theaters like this one in Epidaurus, Greece, which was designed byPolyclitus the Younger in 350 bc. A festival of ancient Greek drama is still held in the summer in this 14,000-seat theater.Roger Wood/Corbis Fundamental to the theater experience is the act of seeing and being seen; in fact, the word theater comes from the Greek word theatron , meaning 'seeing place.' Throughout the history of world cultures, actors have used...

• Game Theory I INTRODUCTION Game Theory, mathematical analysis of any situation involving a conflict of interest, with the intent of indicating the optimal choices that, under given conditions, will lead to a desired outcome.

  C Zero-Sum Games A game is said to be a zero-sum game if the total amount of payoffs at the end of the game is zero. Thus, in a zero-sum game the total amount won is exactly equal tothe amount lost. In economic contexts, zero-sum games are equivalent to saying that no production or destruction of goods takes place within the “game economy” inquestion. Von Neumann and Oskar Morgenstern showed in 1944 that any n-person non-zero-sum game can be reduced to an n + 1 zero-sum game, and that such n...

• Community and communitarianism

  makes fundamental ethical criticism's of one's own community impossible. The success of communitarianism as a political theory depends upon whether it can be demonstrated that liberal political institutions cannot provide adequate conditions for the flourishing of community or secure appropriate support for persons' identities so far as their identities are determined by their membership in communities. 1 Community If I am a member of a community, I conceive of the goals and values I shar...

• Beetle - biology.

  cut, or crush prey. Beetles that consume nectar from flowers use tubelike mouthparts to suck up nectar like a primitive straw. C Thorax The thorax, the body region behind the head, consists of three segments that provide attachments for the legs and wings. Each segment of the thorax carries a pair oflegs. The middle segment also bears the stiff wing sheaths called elytra, and the hind segment holds the membranous hind wings. D Legs Beetles have six jointed legs, each leg with five parts. The f...

• english writings

  Now,nobody can deny the importance roles that have been played by women .They work honestly for instance their participation in political life.Women try to issue more laws to be egalitarian in terms of sexual equality,they realize that responsibility must be shared at home,ine the family,in the educational sphere and finally in the workplaces.Moreover they involve in political parties to describe the problems of today's society in an intersting way and provide innovative solutions.Even...

• Genetics - biology.

  construct identical buildings. Just as each contractor would require a full copy of the blueprint to construct a complete building, each new cell needs a complete copy ofan organism’s genetic information to function properly. Organisms use two types of cell division to ensure that DNA is passed down from cell to cell during reproduction. Simple one-celled organisms and other organisms thatreproduce asexually—that is, without the joining of cells from two different organisms—reproduce by a proces...

• Heat (physics) I INTRODUCTION Heat Loss from a House A thermograph shows the large amount of heat lost through a house's windows during winter.

  Theoretically, the molecules of a substance would exhibit no activity at the temperature termed absolute zero. See Molecule. III TEMPERATURE SCALES Five different temperature scales are in use today: the Celsius scale, known also as the Centigrade scale, the Fahrenheit scale, the Kelvin scale, the Rankine scale, andthe international thermodynamic temperature scale ( see Thermometer). The Celsius scale, with a freezing point of 0° C and a boiling point of 100° C, is widely used throughout the...

• Philadelphia (city, Pennsylvania) - geography.

  national trend of migration from eastern cities to the warmer climate of the Sun Belt. Whereas in 1950 Philadelphia contained more than 2 million people and ranked as the third largest city in America, the city's population plunged to 1,517,550 by 2000.In 2006, the city's population was estimated at 1,448,394. While the city proper was decreasing in population, the metropolitan area centered on Philadelphia grew. In 2006 the region had 6.2 million inhabitants. Philadelphiaranked as the nation’s...

• Book Publishing I INTRODUCTION Book Publishing, manufacture, publication, and distribution of books.

  they use advanced printers and binding techniques to run off as many books as required. Printing only as many books as needed allows companies to save money, andbeing able to store books digitally means that books can be printed whenever necessary, keeping them in print indefinitely. B Marketing and Distribution Once the book has been made, it is ready for distribution. Traditionally, trade books have been sold primarily by salespeople calling on bookstores across the countryand taking orders f...