387 résultats pour "500"

• Tadschikistan - geographie.

  Das Bildungswesen wurde in den Zeiten der Sowjetunion aufgebaut und hat sich seitdem in seiner Struktur wenig geändert. Es gibt etwa 3 500 Schulen mit ungefähr1,5 Millionen Schülern. Im Fremdsprachenunterricht werden neben Russisch vor allem Englisch und Deutsch gelernt. Der Alphabetisierungsgrad beträgt 99,5 Prozent. Tadschikistan kann auf eine lange Geschichte der Wissenschaft zurückblicken, die bis in das Mittelalter reicht. Die meisten der 29 Hochschulen, darunter die 1932gegründete Akademie...

• Fungus - biology.

  Many fungi can reproduce by the fragmentation of their hyphae. Each fragment develops into a new individual. Yeast, a small, single-celled fungus, reproduces bybudding, in which a bump forms on the yeast cell, eventually partitioning from the cell and growing into a new yeast cell. V CLASSIFICATION OF FUNGI Scientists have long disagreed about how to classify fungi, and the classification systems are still developing. The first description of fungi was published in 1729 byItalian botanist Pier...

• Burundi - country.

  D Way of Life Most Burundians live in self-contained compounds of small round grass huts scattered over the country’s many hills. The rugo , the traditional Tutsi hut, is divided into sections and surrounded by an enclosure and cattle corrals. Families farm scattered plots of land on different soils at different altitudes to minimize crop failure. Thefloors of valleys are avoided due to higher temperatures and tsetse fly infestation. Social roles are largely determined by ethnicity, with the T...

• 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...

• Grèce antique, art de la - peinture.

  4 PÉRIODE ARCHAÏQUE (V. 625-480 AV. J.-C.) Après l'apprentissage des premiers temps, la période archaïque correspond à l'essor et à la maturation qui préparent l'accomplissement de l'époque classique. Les monuments se multiplient dans les grands sanctuaires de Grèce, mais également en Grèce de l'Est, où l'Ionie développe une civilisation brillante, et dans les prospères colonies occidentales. L'art d'Athènes reflète un certain luxe à l'époque du tyran Pisistrate, que dissipent l'instauration de...

• Grèce antique, art de la - sculpture.

  4 PÉRIODE ARCHAÏQUE (V. 625-480 AV. J.-C.) Après l'apprentissage des premiers temps, la période archaïque correspond à l'essor et à la maturation qui préparent l'accomplissement de l'époque classique. Les monuments se multiplient dans les grands sanctuaires de Grèce, mais également en Grèce de l'Est, où l'Ionie développe une civilisation brillante, et dans les prospères colonies occidentales. L'art d'Athènes reflète un certain luxe à l'époque du tyran Pisistrate, que dissipent l'instauration...

• Fish - biology.

  pectoral fins provide fine movements, add forward thrust, or, together with the pelvic fins, serve as brakes. Typically, fins consist of a thin membrane stretched over afanlike series of thin rods called spines or rays. Most fish breathe underwater with the help of special respiratory organs called gills. Gills are made of a series of thin sheets or filaments through which blood circulates.As water moves into a fish’s mouth and passes over the gills, dissolved oxygen passes across the thin gill...

• Océanos y oceanografía - ciencias de la naturaleza.

  El océano contiene el 97% del agua de la Tierra; en la atmósfera está el 0,001%. Los procesos que intercambian y transforman el agua en vapor, en líquido o en sólido sonfundamentales para el clima y para la propia vida. El agua es una de las sustancias más comunes, pero tiene algunas propiedades físicas y químicas inusuales. Es uno de los pocos líquidos naturales y puede encontrarse enlas tres fases: vapor de agua, agua líquida y hielo sólido. Tiene un calor específico y un calor latente grandes...

• Indo-Pakistani Wars - History.

  wrest Jammu and Kashmīr from India through the use of force. This effort failed as India held its ground, and the war ended in a stalemate after almost two months ofarmed conflict. Although the second war over the territory was shorter than the first, the increased firepower of the two nations resulted in a more deadly war, with atotal of about 6,800 battle casualties. A Events Before the War A number of factors precipitated the second conflict over Jammu and Kashm īr. In the wake of a border w...

• Bolivien - geographie.

  Heiligabend stellen die Kinder ihre alten Schuhe in ein Fenster, damit der Weihnachtsmann dafür neue Geschenke bringt. Im Carnaval kostümieren sich die Leute. Sie tanzen, besprengen sich mit Wasser und essen Confite (kandierte Nüsse bzw. kandiertes Obst). Jede der neun Provinzen feiert darüber hinaus eigene, stark folkloristisch geprägte Feiertage: So finden z. B. Fiestas zu Ehren des lokalen Heiligen (Patronatsfeste) in fast jedem Pueblo (Dorf) statt. 3.2 Wichtige Städte Der Regierung...

• Coral Reef.

  sensitive to particles of mud or sediment settling on them, which means that corals rarely grow close to rivers or other sources of sediment. In the sea, light is filteredout by depth, so reef-building corals can only grow in relatively shallow water. Even in the clearest oceans few reef-building corals grow below a depth of 80 to 100 m(260 to 328 ft). Although corals need nutrients, they cannot thrive in areas where there are large amounts of nutrients. Typically, microscopic organisms in the p...

• Finnland - geographie.

  begangen. 3.3 Soziales Der Lebensstandard der Bevölkerung in Finnland ist hoch. Das finnische Sozialversicherungssystem umfasst Arbeitslosen-, Kranken-, Berufsunfähigkeits- undAltersversicherungen; ferner werden Kindergeld und Kriegsinvalidenentschädigung gezahlt. Medikamente wurden häufig von der Arbeitsstelle ausgegeben, doch dasstaatliche Gesundheitsgesetz von 1972 sorgte dafür, dass in allen Städten Gesundheitszentren eingerichtet wurden und schaffte die direkte Bezahlung von Arztrechnungen...

• Republik Irland - geographie.

  3.3 Religion Etwa 93 Prozent der Iren sind römisch-katholisch, 3 Prozent gehören der anglikanischen Kirche an. Die verbleibenden 4 Prozent verteilen sich auf andereGlaubensrichtungen oder sind konfessionslos. Der Einfluss der katholischen Kirche auf die Kultur und die Politik in Irland ist traditionell sehr groß, die Belange derSozialpolitik sind durch christliche Wertvorstellungen stark geprägt. So waren z. B. Ehescheidung und Schwangerschaftsabbruch durch die Verfassung verboten.Empfängnisver...

• Grand oral du bac : Le cancer (Histoire de la médecine)

  la structure de l'ADN (où est codé notre patrimoine génétique). les mécanismes de reconstruction de l'ADN sont limités et une exposition trop fréquente a pour effet de les épuiser. lorsqu'ils cessent d'être opérationnels, les cellules endommagées ont tendance à dégénérer en tumeur cancéreuse. Ce phénomène peut être assimilé à un vieillissement prématuré. la capacité de régénération des cellules endommagées par les UV varie d'un individu à l'autre et...

• George Herbert Walker Bush.

  Lebanon. More troubling was the disclosure that agents operating under direct White House supervision used profits from the arms sales to buy weapons for thecontras, a group of anti-government Nicaraguan rebels, despite an explicit congressional ban on such aid. Bush later claimed that he opposed the arms-for-hostagesdeal, but offered little evidence to back his claims ( see Iran-Contra Affair). C 1988 Presidential Election While the Reagan-Bush program helped produce prosperity for the wealth...

• George Herbert Walker Bush - USA History.

  Lebanon. More troubling was the disclosure that agents operating under direct White House supervision used profits from the arms sales to buy weapons for thecontras, a group of anti-government Nicaraguan rebels, despite an explicit congressional ban on such aid. Bush later claimed that he opposed the arms-for-hostagesdeal, but offered little evidence to back his claims ( see Iran-Contra Affair). C 1988 Presidential Election While the Reagan-Bush program helped produce prosperity for the wealth...

• Israel - geographie.

  Israel eingewandert sind, und die Sephardim, deren Vorfahren von der Iberischen Halbinsel und aus Nordafrika nach Israel kamen. Andere Volksgruppen stammen aus demMittleren Osten oder aus Osteuropa. Letztere wanderten vor allem nach dem Zusammenbruch der Sowjetunion und dem Zerfall des Ostblocks nach Israel aus. 3.1 Wichtige Städte Größte Stadt des Landes ist Jerusalem (702 000 Einwohner einschließlich der Altstadt). Weitere wichtige Städte sind das Industriezentrum Tel Aviv-Jaffa (369 000), Ha...

• Égypte (fiche pays).

  1 livre égyptienne (EGP) = 100 piastresExportationspétrole brut et dérivés, coton brut, textile, produits métallurgiques, produits agricolesImportationséquipements industriels, machines et équipement de transport, denrées alimentaires, produits manufacturés de base, produits chimiquesPrincipaux partenaires à l'exportationÉtats-Unis, Italie, Israël, Allemagne, Pays-Bas, Grèce, FrancePrincipaux partenaires à l'importationÉtats-Unis, Allemagne, France, Australie, ArgentineIndustries et servicesagro...

• Leichtathletik (Männer): Medaillengewinner der Olympischen Sommerspiele.

  1896 Thomas Burke, USA 54,2 Herbert Jamison, USA 55,2 Charles Gmelin, GBR 55,6 1900 Maxwell 'Maxey' Long, USA 49,4 William Holland, USA 49,6 Ernst Schutz, DEN - 1904 Harry Hillman, USA 49,2 Frank Waller, USA 49,9 Herman Groman, USA 50,0 1906 Paul Pilgrim USA 53,2 Wyndham Halswelle,GBR 53,8 Nigel Barker, AUS 54,1 1908 Wyndham Halswelle, GBR 150,0 1912 Charles Reidpath, USA 48,2 Hanns Braun, GER 48,3 Edward Lindberg, USA 48,4 1920 Bevil Rudd, RSA 49,6 Guy Butler, GBR 49,9 Nils Engdahl, SWE 50,0 1...

• 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...

• Kazakhstan - country.

  mismanagement. Between 1949 and 1991 the Soviet government conducted about 70 percent of all of its nuclear testing in Kazakhstan, mostly in the northeastern area near the city ofSemipalatinsk (now Semey). Nearly 500 nuclear explosions occurred both above and below ground near Semipalatinsk, while more than 40 nuclear detonationsoccurred at other testing grounds in western Kazakhstan and in the Qyzylqum desert. More than 1 million of Kazakhstan’s inhabitants were exposed to dangerous levelsof ra...

• Christopher Columbus I INTRODUCTION Christopher Columbus (1451-1506), Italian-born Spanish navigator who sailed west across the Atlantic Ocean in search of a route to Asia but achieved fame by making landfall in the Americas instead.

  explorers, adventurers, entrepreneurs, merchants, and any others who saw their fortunes tied to the trade winds and ocean currents. Columbus’s brother Bartholomewworked in Lisbon as a mapmaker, and for a time the brothers worked together as draftsmen and book collectors. Later that year, Columbus set sail on a convoy loadedwith goods to be sold in northern Atlantic ports. In 1478 or 1479 Columbus met and married Felipa Perestrello e Moniz, the daughter of a respected, though relatively poor, nob...

• Christopher Columbus.

  explorers, adventurers, entrepreneurs, merchants, and any others who saw their fortunes tied to the trade winds and ocean currents. Columbus’s brother Bartholomewworked in Lisbon as a mapmaker, and for a time the brothers worked together as draftsmen and book collectors. Later that year, Columbus set sail on a convoy loadedwith goods to be sold in northern Atlantic ports. In 1478 or 1479 Columbus met and married Felipa Perestrello e Moniz, the daughter of a respected, though relatively poor, nob...

• Christopher Columbus.

  explorers, adventurers, entrepreneurs, merchants, and any others who saw their fortunes tied to the trade winds and ocean currents. Columbus’s brother Bartholomewworked in Lisbon as a mapmaker, and for a time the brothers worked together as draftsmen and book collectors. Later that year, Columbus set sail on a convoy loadedwith goods to be sold in northern Atlantic ports. In 1478 or 1479 Columbus met and married Felipa Perestrello e Moniz, the daughter of a respected, though relatively poor, nob...

• Christopher Columbus - explorer.

  explorers, adventurers, entrepreneurs, merchants, and any others who saw their fortunes tied to the trade winds and ocean currents. Columbus’s brother Bartholomewworked in Lisbon as a mapmaker, and for a time the brothers worked together as draftsmen and book collectors. Later that year, Columbus set sail on a convoy loadedwith goods to be sold in northern Atlantic ports. In 1478 or 1479 Columbus met and married Felipa Perestrello e Moniz, the daughter of a respected, though relatively poor, nob...

• Mississippi - geography.

  The climate of Mississippi is characterized by long, hot, and humid summers and generally mild winters. The higher lands in the northeast are usually cooler than otherareas of the state. D1 Temperature Average January temperatures range from about 6° C (about 42° F) in northeastern Mississippi to about 12° C (about 54° F) along the Gulf Coast. No part of the stateis entirely free from freezing temperatures, but prolonged periods of extreme cold rarely occur. Temperatures more than 15° C (30° F)...

• Mississippi - USA History.

  The climate of Mississippi is characterized by long, hot, and humid summers and generally mild winters. The higher lands in the northeast are usually cooler than otherareas of the state. D1 Temperature Average January temperatures range from about 6° C (about 42° F) in northeastern Mississippi to about 12° C (about 54° F) along the Gulf Coast. No part of the stateis entirely free from freezing temperatures, but prolonged periods of extreme cold rarely occur. Temperatures more than 15° C (30° F)...

• 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...

• Louisiana - geography.

  lakes are on the Red River and its tributaries. In addition, small oxbow lakes are numerous in the Mississippi Alluvial Plain. Oxbow lakes are formed when a river cutsthrough the neck of one of its loops, or meanders, thus establishing a shorter course and leaving the former loop as a lake separate from the river. Louisiana also hassome artificially created reservoirs. C Coastline Louisiana’s long and irregular coastline extends along the Gulf of Mexico from the Pearl River on the east to the S...

• Louisiana - USA History.

  lakes are on the Red River and its tributaries. In addition, small oxbow lakes are numerous in the Mississippi Alluvial Plain. Oxbow lakes are formed when a river cutsthrough the neck of one of its loops, or meanders, thus establishing a shorter course and leaving the former loop as a lake separate from the river. Louisiana also hassome artificially created reservoirs. C Coastline Louisiana’s long and irregular coastline extends along the Gulf of Mexico from the Pearl River on the east to the S...

• Ancient Greece.

  The first culture of Aegean civilization on the Greek mainland is named Mycenaean for the palace at Mycenae on the Pelopónnisos. Scholars call the Mycenaeans the“earliest Greeks” because they are the first people known to have spoken Greek. Mycenaean culture developed later than Minoan. The ancestors of the Mycenaean people wandered onto the mainland from the north and the east from about 4000 to2000 BC, mixing with the people already there, and by about 1400 BC the Mycenaeans had become very...

• Ancient Greece .

  The first culture of Aegean civilization on the Greek mainland is named Mycenaean for the palace at Mycenae on the Pelopónnisos. Scholars call the Mycenaeans the“earliest Greeks” because they are the first people known to have spoken Greek. Mycenaean culture developed later than Minoan. The ancestors of the Mycenaean people wandered onto the mainland from the north and the east from about 4000 to2000 BC, mixing with the people already there, and by about 1400 BC the Mycenaeans had become very...

• Ancient Greece - USA History.

  The first culture of Aegean civilization on the Greek mainland is named Mycenaean for the palace at Mycenae on the Pelopónnisos. Scholars call the Mycenaeans the“earliest Greeks” because they are the first people known to have spoken Greek. Mycenaean culture developed later than Minoan. The ancestors of the Mycenaean people wandered onto the mainland from the north and the east from about 4000 to2000 BC, mixing with the people already there, and by about 1400 BC the Mycenaeans had become very...

• Oregon - geography.

  B Rivers and Lakes The Columbia River forms most of the Oregon-Washington boundary, and with its tributaries this great river drains a large portion of Oregon. From the point where theColumbia first touches the state, at Wallula Gap, the river runs in a shallow gorge, deepening as it approaches the Cascades. This part of the river once had manyrapids and falls, but is now navigable by large vessels because of dams and locks that have been built along much of its length. An important tributary o...

• Oregon - USA History.

  B Rivers and Lakes The Columbia River forms most of the Oregon-Washington boundary, and with its tributaries this great river drains a large portion of Oregon. From the point where theColumbia first touches the state, at Wallula Gap, the river runs in a shallow gorge, deepening as it approaches the Cascades. This part of the river once had manyrapids and falls, but is now navigable by large vessels because of dams and locks that have been built along much of its length. An important tributary o...

• 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...

• victor hugo napoléon le petit