79 résultats pour "250"
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Dictionnaire en ligne:
ÉMINENT, -ENTE, adjectif.
l'être que représente cette idée; éminemment dans le principe d'où cet être tire sa réalité " (VOCABULAIRE TECHNIQUE ET CRITIQUE DE LA PHILOSOPHIE (ANDRÉ LALANDE) 1968). STATISTIQUES : Fréquence absolue littéraire : 780. Fréquence relative littéraire : XIXe. siècle : a) 1 121, b) 897, XXe. siècle : a) 1 046, b) 1 250. 2
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Monte Albán - historia.
colocados por debajo del nivel del suelo de los conjuntos de apartamentos y construidos a partir de losas de piedra; constan de escalinata, antecámara y cámara de falsoarco. La distribución de tales rasgos no es homogénea. La disposición arquitectónica de las tumbas consiste en imitar la fachada de los templos, decorándolas con tableros ycornisas y abriendo sobre la puerta un pequeño nicho en el que se colocaba la urna funeraria, normalmente en forma de divinidad. En el interior, antecámara y cá...
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Le génocide arménien
villes libanaises et à Jérusalem. L'empire ottoman comptait environ 2 millions d'Arméniens à la fin du XIXe siècle sur une population totale de 36 millions d'habitants. Ébauche de génocide Malgré une tentative de modernisation par le haut, dans la période du Tanzimat, de 1839 à 1876, l'empire ottoman entre dans une décadence accélérée. Le sultan Abdul-Hamid II, humilié par le congrès de Berlin de 1878, attise sans vergogne les haines religieuses pour consolider son pouvoir (les derniers tsars de...
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Chad - geografía.
El desértico ChadEl país tiene un clima tropical seco. El Sahara ocupa la mitad norte del territorio, por lo que la zona es calurosa y árida, predominandolas condiciones desérticas.Shaw McCutcheon/Bruce Coleman, Inc. Chad tiene un clima tropical seco. La zona norte es calurosa y árida y predominan las condiciones desérticas. El área central tiene tres estaciones: calurosa desde marzohasta julio, lluviosa desde julio hasta octubre, con precipitaciones medias entre 250 y 750 mm y fresco durante el...
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Dictionnaire en ligne:
DIRIGER, verbe transitif.
qui dirige notre attention et la concentre sur tel ou tel foyer émetteur de sensations plutôt que sur tel autre,... VALÉRY LARBAUD, Journal, 1934, page 320. 3. Emploi pronominal réfléchi ou à sens passif. [Le sujet désigne un être vivant, un objet ou un corps mobile] . Se mettre en mouvement pour une direction ou une orientation déterminées. L'aiguille aimantée se dirige vers le nord; le bateau se dirige vers le portugais Il se dirige lentement vers la porte, puis, au moment de sortir, il se r...
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Dictionnaire en ligne:
DIRIGÉ, -ÉE, participe passé et adjectif.
pas trop savoir où il devait diriger ses pas (ALPHONSE DE CHATEAUBRIANT, Monsieur des Lourdines, 1911, page 250) — Au figuré. Orienter vers un but déterminé. Diriger quelqu'un vers telle ou telle carrière : Ø 3. Pour un prêtre que ses études doivent diriger vers un professorat, même de grand séminaire, c'est un devoir que de posséder le doctorat en théologie. JOSEPH MALÈGUE, Augustin ou le Maître est là, tome 1, 1933, page 262. b) Diriger quelque chose vers, sur, contre. — Envoyer, expédier,...
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hémoglobine (Biologie et Anatomie).
Ces anomalies sont appelées hémoglobinopathies. La « qualité » des hémoglobines peut être étudiée par l’intermédiaire de méthodes biochimiques, qui permettent demesurer la fixation de l’oxygène sur la molécule et sa libération, ou des tests explorant la stabilité des hémoglobines. On a dénombré environ 800 sortes d’hémoglobines anormales ou mutées, dont la plupart sont rares et sans retentissement sur l’organisme. Toutefois, certaines anomaliesdues à des mutations peuvent altérer la fonction et...
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Dictionnaire en ligne:
DIRIGEANT, -ANTE, participe présent, adjectifet substantif.
Ø 2.... il avait d'autre part prescrit au général Fayolle de retirer de son front quatre divisions d'infanterie, et de diriger sur Creil et Chantilly le 2e. corps de cavalerie. MARÉCHAL FERDINAND FOCH, Mémoires pour servir à l'histoire de la guerre de 1914-1918, tome 2, 1929, page 91. · Diriger ses pas vers (littéraire). Aller dans la direction de. Le vieux domestique semblait tout désorienté, ne pas trop savoir où il devait diriger ses pas (ALPHONSE DE CHATEAUBRIANT, Monsieur des Lourdines,...
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paléochrétien, art - peinture.
La grande tradition de la mosaïque paléochrétienne débute au IVe siècle. Dans les basiliques, de longues séquences extraites de l’Ancien Testament ou représentant des processions de saints, ornaient les murs de la nef dans l’espace situé au-dessus des arcs. Le grand arc qui sépare la nef du sanctuaire — l’arc triomphal — était habituellement couvert de mosaïques, et le demi-dôme de l’abside était réservé à la représentation du Christ, de la Vierge ou de saints auxquels étaient dédiées les égli...
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paléochrétien, art - sculpture.
La grande tradition de la mosaïque paléochrétienne débute au IVe siècle. Dans les basiliques, de longues séquences extraites de l’Ancien Testament ou représentant des processions de saints, ornaient les murs de la nef dans l’espace situé au-dessus des arcs. Le grand arc qui sépare la nef du sanctuaire — l’arc triomphal — était habituellement couvert de mosaïques, et le demi-dôme de l’abside était réservé à la représentation du Christ, de la Vierge ou de saints auxquels étaient dédiées les égli...
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Chiang Kai-shek - History.
Even one of Chiang's allied commanders, Zhang Xueliang, who had been expelled from Manchuria after the Mukden Incident, came to doubt the wisdom of Chiang'sapproach. In 1936 Zhang held Chiang prisoner in Xi'an until Chiang agreed to join the Communists in an allied front against Japan. Chiang later denied making anyagreement. On July 7, 1937, near the Marco Polo Bridge on the outskirts of Beijing, a Chinese patrol and Japanese troops on a training exercise clashed, and full-scalewar broke out be...
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Denver - geography.
Denver is the center of professional sports in the Rocky Mountain region. Major league teams are the Denver Broncos (football), Colorado Rockies (baseball), DenverNuggets (basketball), and Colorado Avalanche (ice hockey). Coors Field (opened in 1995) is the home of the Colorado Rockies. The Broncos began play at the newlyconstructed Invesco Field at Mile High in 2001, and the Nuggets and Avalanche play at the Pepsi Center. The National Western Stock Show and Rodeo, one of thelargest such shows i...
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Arktis - geographie.
2.5 Bevölkerung Lange bevor die Europäer die Arktis entdeckten, gab es dort in weiten Teilen des Landes eine verstreut lebende Bevölkerung. Nur Island stellte eine nennenswerteAusnahme dar. Die Ureinwohner gehörten zahlreichen ethnischen Gruppen an und bedienten sich verschiedener Sprachen; sie stammten jedoch alle ursprünglich aus Asien.Die Inuit (Eskimo) erreichten den Atlantischen Ozean im Osten Grönlands und die Lappen (Samen) gelangten nach Norwegen. In den Arktisregionen Russlands gibt es...
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Panama Canal - Geography.
The size of ships using the Panama Canal has steadily increased. About 27 percent of the vessels that use the canal are built to the maximum dimensions that can passthrough it (a category called “Panamax”). This has prompted further widening of Gaillard Cut, so that the larger Panamax vessels may transit safely. However, some ofthe world’s commercial and military ships are too large for the canal. Since the 1940s, new U.S. battleships and aircraft carriers have been built exceeding the canal’sdi...
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Syrien - geographie.
4 BILDUNG UND KULTUR Der Besuch der Grundschule ist in Syrien für alle Kinder kostenfrei, die Schulpflicht beträgt 9 Jahre; der Alphabetisierungsgrad liegt für Männer bei 90,6 Prozent, für Frauenbei 66,1 Prozent. In der Sekundarstufe lernen die meisten Schüler als Fremdsprache Englisch, ein kleinerer Teil Französisch. Syrien hat Universitäten in Damaskus, Aleppo, Homs und Latakia mit insgesamt nahezu 200 000 Studenten. In Damaskus befindet sich auch die Arabische Akademie(1919), die dem Studium...
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Glacier.
covered. In spring the snow cover begins to melt in the lower reaches, exposing the ice surface. As temperatures increase, the melting moves up the glacier. Thesnowline is the highest position the melting reaches during the year. Firn is old granular snow. The firn limit may not exactly coincide with the annual snowline since insome years rapid melting leaves behind firn patches below the snowline. Some glaciers exhibit features called ice streams and icefalls. Ice streams are valley glaciers th...
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Snake (reptile).
in their heads that conduct sound. They are able to hear low-frequency sounds and to sense vibrations that travel through the ground or water. The majority of snakeshave good eyesight, especially for detecting moving objects, although most burrowing snakes can only distinguish between light and dark. Pit vipers, boas, and pythons have an unusual adaptation for detecting warm-blooded prey and predators. On the heads of these snakes are small pits lined with cellsthat are extremely sensitive to he...
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Bird.
I
INTRODUCTION
Bird, animal with feathers and wings. Birds are the only
B Physical Adaptations for Flight The internal body parts of all birds, including flightless ones, reflect the evolution of birds as flying creatures. Birds have lightweight skeletons in which many of themajor bones are hollow. A unique feature of birds is the furculum, or wishbone, which is comparable to the collarbones of humans, although in birds the left and rightportions are fused together. The furculum absorbs the shock of wing motion and acts as a spring to help birds breathe while they...
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Bird - biology.
B Physical Adaptations for Flight The internal body parts of all birds, including flightless ones, reflect the evolution of birds as flying creatures. Birds have lightweight skeletons in which many of themajor bones are hollow. A unique feature of birds is the furculum, or wishbone, which is comparable to the collarbones of humans, although in birds the left and rightportions are fused together. The furculum absorbs the shock of wing motion and acts as a spring to help birds breathe while they...
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Uzbekistan - country.
E Environmental Issues The evaporation of the Aral Sea is one of the worst ecological disasters in the world. The Aral has shrunk so much that it now holds only about one-fifth the volume ofwater it held in 1960. The shrinkage is due to irrigation withdrawals from the Amu Darya and Syr Darya, a practice that began on a massive scale in the early 1960s aspart of the Soviet Union’s ill-conceived drive to increase cotton yields in Central Asia. Growing cotton in the naturally arid and saline soil...
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Democratic Republic of the Congo - country.
Except in the high elevations, the country’s climate is very hot and humid. The average annual temperature in the low central area is about 27°C (about 80°F).Temperatures are considerably higher in February, the hottest month. At altitudes above about 1,500 m (about 5,000 ft) the average annual temperature is about 19°C(about 66°F). Average annual rainfall is about 1,500 mm (about 60 in) in the north and about 1,300 mm (about 50 in) in the south. Frequent heavy rains occur fromApril to November...
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Thailand - country.
E Natural Resources Thailand possesses a range of mineral resources. Tin is mined in the peninsula. Important gemstones, such as sapphires, are found in the southeast, and coal reserves,particularly lignite, are in the north. Fish are abundant in rivers and coastal waters. In addition to being consumed domestically, fish are also exported. F Climate Thailand experiences a typical monsoon climate. Winds blow from the northeast during the winter months of October to March or April (known as the...
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Sun - astronomy.
A The Sun’s Place in the Milky Way The Milky Way Galaxy contains about 400 billion stars. All of these stars, and the gas and dust between them, are rotating about a galactic center. Stars that arefarther away from the center move at slower speeds and take longer to go around it. The Sun is located in the outer part of the galaxy, at a distance of 2.6 × 10 17 km (1.6 × 10 17 mi) from the center. The Sun, which is moving around the center at a velocity of 220 km/s (140 mi/s), takes 250 million y...
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Texas - geography.
D Climate Eastern Texas has a humid subtropical climate, while a semiarid low latitude climate prevails in central areas, and an arid low latitude climate in the extreme west. Alongthe coast the climate is much milder, with fewer extremes in temperatures. Hurricanes sometimes hit the coastal areas of Texas from late July through September, andtornadoes are common in north-central Texas in April and May. D1 Temperature Summers are hot throughout the state, and temperatures exceeding 35°C (95°F)...
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Texas - USA History.
D Climate Eastern Texas has a humid subtropical climate, while a semiarid low latitude climate prevails in central areas, and an arid low latitude climate in the extreme west. Alongthe coast the climate is much milder, with fewer extremes in temperatures. Hurricanes sometimes hit the coastal areas of Texas from late July through September, andtornadoes are common in north-central Texas in April and May. D1 Temperature Summers are hot throughout the state, and temperatures exceeding 35°C (95°F)...
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Puerto Rico - geography.
the length of the day remains fairly constant throughout the year. San Juan has a mean July temperature of 28°C (83°F) and a mean January temperature of 25°C (77°F). The average temperature of the seawater surrounding theisland is 27°C (81°F), with little variation during the course of the year. The entire island is cooled by the trade winds from the northeast. This air also contains much water vapor. As the air is forced to rise over the mountains, it becomescooler and the water vapor condenses...
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Missouri - geography.
Saint Francois Mountains, at the eastern end of the crest of the dome. Only in these mountains have the sedimentary rocks been sufficiently eroded away so that theunderlying igneous rocks are exposed. They form the rounded, knoblike peaks of an old mountain range. The peaks project, in isolation or in clusters, between 230 and300 m (750 and 1,000 ft) above the surrounding sedimentary basins. One of these knobs, Taum Sauk Mountain, reaches 540 m (1,772 ft) above sea level and is thehighest point...
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Missouri - USA History.
Saint Francois Mountains, at the eastern end of the crest of the dome. Only in these mountains have the sedimentary rocks been sufficiently eroded away so that theunderlying igneous rocks are exposed. They form the rounded, knoblike peaks of an old mountain range. The peaks project, in isolation or in clusters, between 230 and300 m (750 and 1,000 ft) above the surrounding sedimentary basins. One of these knobs, Taum Sauk Mountain, reaches 540 m (1,772 ft) above sea level and is thehighest point...
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Space Exploration - astronomy.
to produce 250,000 newtons (56,000 lb) of thrust. The Germans launched thousands of V-2s carrying explosives against targets in Britain and The Netherlands. Whilethey did not prove to be an effective weapon, V-2s did become the first human-made objects to reach altitudes above 80 km (50 mi)—the height at which outer spaceis considered to begin—before falling back to Earth. The V-2 inaugurated the era of modern rocketry. A2 Early Artificial Satellites During the years following World War II, the...