454 résultats pour "four"
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four. n.m. INDUSTRIE : appareil de traitement à haute température
fours de traitement d'objets fabriqués. Les fours de traitement de produits en vrac peuvent être statiques et verticaux, traversés par le produit à traiter qui descend et qui est extrait à sa base ; c'est le cas de la partie supérieure des hauts fourneaux avant le début d'apparition de la fonte liquide, et c'est le cas des fours à plâtre et des fours à chaux. Ils peuvent être également dynamiques, de types variés, constitués par exemple par un empilage de plateaux superposés sur chacun desquels...
- four industriel four industriel, tout type d'appareil utilisé pour soumettre une substance à la chaleur dans le but de lui faire subir des transformations physiques ou chimiques.
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The Four-Minute Mile.
The nervous runners false-started once before setting off cleanly. As planned, Chris Brasher led Bannister through the first half-mile. After a half lap (200 meters),Bannister called out to his teammate: “Faster! Faster!” Accelerating, the runners sped through the first quarter-mile in 57.5 seconds-ahead of pace. At 600 meters,Stampfl shouted from the infield: “Relax! Relax!” Running smoothly behind Brasher, Bannister reached the half-mile mark in 1 min 58.2 sec. Chataway sprinted into the l...
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TPE: Le four à micro-ondes
Sommaire Introduction p.3 I- Avancée technologique p.4 A) Invention et fonctionnement p.4 B) Avantages p.7 C) Evolution...
- Définition du terme: CUL-DE-FOUR, substantif masculin.
- Owens Wins Four Gold Medals.
- 1864: Four Martin
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De calcaria in carbonariam pervenire
Tomber du four à chaux dans le four à charbon
Ce proverbe est emprunté à...
De calcaria in carbonariam pervenire Tomber du four à chaux dans le four à charbon Ce proverbe est emprunté à Tertullien (De carne Christi. 6) et figure dans les Adagia d'Erasme (2, 4, 96): il décrit la situation d'un individu qui en voulant éviter un péril se trouve confronté à un péril plus grave encore. Citons deux variantes en latin : Quifugit patellam cadit in prunas, >, attesté par une scholie d'un passage de Lucien faisant allusion aux pratiques sacrificielles (3, 687) et De fuma ad flamm...
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Francis Ponge, Le parti Pris des choses (1942) : « Le pain »
la lumière avec application couche ses feux… ». Le pain (produit de fabrication humaine) est comparé à la montagne (issue de Dieu, si jamais elle est créée parquelqu'un) mais la montagne est immédiatement décrite à l'aide d'un champ lexical de la fabrication humaine : aller-retour entre l'artisanat humain et l'artisanat divinque l'on retrouve symptomatiquement dans la métaphore du « four stellaire ». B) Une cosmogonie athée En effet, la manière dont est décrit le processus de fabrication de la c...
- Carl Lewis Carl Lewis, born in 1961, American track-and-field athlete, who won a total of nine gold medals at the Olympic Games in 1984, 1988, 1992, and 1996, including four straight gold medal performances in the long jump.
- 1855: Four Bessemer
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Contrairement à la céramique, obtenue par durcissement au feu d'une pâte plastique, le
verre est élaboré par fusion préalable d'un mélange de ses composants solides, suivie d'une
solidification du liquide homogène ainsi obtenu.
bore - Composés du bore chaux cristal - 2.INDUSTRIE DU VERRE cristallerie fibre optique plomb potasse Pyrex quartz réfraction sable silicate silice sodium L'élaboration. La préparation de la charge comporte le mélange des matières solides pulvérulentes citées ci-dessus. La soude peut être apportée sous forme de carbonate, voire de sulfate, qui jouent alors un rôle de fondant ; ce rôle est complété par l'ajout de déchets de verre broyés et recyclés, appelés groisil ou calcin. Le ve...
- THE FOUR SEASONS
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Antelope - biology.
antelopes still display complex patterns of behavior, although much of it is instinctive rather than learned. In open habitats, antelopes run a high risk of predation (being preyed upon). To survive they use several kinds of defensive strategy, including living in herds. Herd living ensures that many pairs of eyes and ears are on the alert for danger. Herd living also gives individuals a better chance of avoiding attack, because predators canchoose from many potential targets. When danger thre...
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Vocabulaire:
CHAUFFE, substantif féminin.
chauffage, en particulier d'une chaudi?re, qui re?oit la chaleur du foyer et la transmet (confer R. CHAMPLY, Nouvelle encyclop?die pratique, tome 17, 1927, page 9). 3. M?TALLURGIE. rare. Four, partie d'un four; partie du four o? br?le le combustible (Confer Adolphe Wurtz, Dictionnaire de chimie pure et appliqu?e, tome 2, 1er. volume, 1873, page 399). Forme d?riv?e du verbe "chauffer" CHAUFFER, verbe. I.? Emploi transitif. A.? Donner une certaine chaleur. 1. [Le sujet d?signe une so...
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solaire, énergie.
Les capteurs plans ne peuvent généralement pas porter les fluides caloporteurs à très haute température. En revanche, il est possible d'utiliser des capteurs par concentration, mais ils sont plus complexes et plus onéreux. Il s'agit de réflecteurs en demi-cercle qui renvoient et concentrent l'énergie solaire sur un tuyau où circule un fluide caloporteur. Cette concentration entraîne une augmentation de l'intensité, et les températures obtenues sur le récepteur (appelé cible) peuvent atteindre pl...
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sidérurgie - physique.
Lorsque, dans le minerai fondu, la teneur en carbone atteint le niveau désiré, le four est décrassé par un orifice situé à l’arrière. L’acier fondu s’écoule alors dans un petittuyau de coulée en direction d’une grande poche placée sous le four au niveau du sol. L’acier est versé de la poche dans des moules en fonte, qui forment des lingots.Récemment, des méthodes ont été mises en pratique pour fabriquer en continu de l’acier sans passer par le procédé de fonte des lingots. 4.2 Procédé à l’oxygèn...
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Molecule - chemistry.
attracted to the negatively charged electrons between them. The electrons belong to the molecule as a whole. However, each hydrogen atom now has a complete outershell of two electrons. The formula H 2 describes a hydrogen molecule, a discrete unit. When a molecule contains just two atoms, such as the hydrogen molecule does, it is called a diatomic molecule. Some atoms can form covalent bonds with more than one other atom and thus create a larger molecule. Atoms form molecules with covalent bo...
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Baseball.
pitcher or argue a call with an umpire. Two or more coaches, positioned closer to the field, assist the manager by communicating with the players. For example,managers may decide what pitches should be thrown, when batters should swing at a pitch, and how runners should move around the bases. The manager relays thesedecisions through special hand signals that the coaches repeat to communicate to the players. Umpires are responsible for interpreting and enforcing the rules of play. They rule on t...
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Vice President of the United States.
naval operations. Located in northwest Washington at Massachusetts Avenue and 34th Street, the three-story Queen Anne-style house is within easy driving distance ofCapitol Hill and the White House. The vice president receives an annual salary of $189,300. The vice president has a staff and offices in the Everett M. Dirksen Senate Office Building, near the Capitol, toassist with legislative matters, as well as a personal office near the Senate lobby. The vice president also has staff and offices...
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Tennis.
and interpret rules. The head official on the court, called the chair umpire, sits on a tall chair at one end of the net. A varying number of line judges sit around the courtbeyond the path of the players. Line judges determine whether serves and shots are good or out. A net-cord judge may be employed to determine when a ball touchesthe top of the net, and a foot-fault judge may watch for that specific infraction. In the 1980s electronic devices began to be used in some professional tournaments...
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Blankers-Koen Wins Fourth Gold Medal.
Blankers-Koen's final event was the 4 x 100-meter relay. Her decision to enter the race revealed much about her character. Under Olympic rules, she could enter amaximum of four events. Even though she owned the world records for the long jump and high jump, she instead opted for the relay. She explained that a “team”victory would hold more meaning to her country and its citizens. Blankers-Koen's superb anchor leg clinched Holland's victory. Meanwhile, in the long jump,Hungary's Olga Gyarmati won...
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Montréal - geography.
percent), and Eastern Orthodox (2.8 percent) religions. Another 5.4 percent claim no religious affiliation. IV EDUCATION AND CULTURE Montréal has a large number of private schools, most of them partially funded by the province. Like the rest of Québec province, Montréal has two public schoolsystems, one for French speakers and one for English speakers. The Charter of the French Language (1977), known as Bill 101, restricts access to English-languageschools and requires children of immigrants t...
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Montréal - Geography.
percent), and Eastern Orthodox (2.8 percent) religions. Another 5.4 percent claim no religious affiliation. IV EDUCATION AND CULTURE Montréal has a large number of private schools, most of them partially funded by the province. Like the rest of Québec province, Montréal has two public schoolsystems, one for French speakers and one for English speakers. The Charter of the French Language (1977), known as Bill 101, restricts access to English-languageschools and requires children of immigrants t...
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Ship.
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INTRODUCTION
Ship, vessel that is buoyant in the water and used
B1 Biremes Experience soon proved that longer ships posed a new set of problems: They were weaker structurally, more difficult to maneuver, and presented a larger target to anyenemy ship with a ram. In the 8th century BC Mediterranean shipbuilders eliminated these problems with the bireme , a war galley built to accommodate two levels, or banks , of oarsmen. Oarsmen on the lower level rowed oars from ports cut into the side of the vessel, while those above rowed from the deck. This arrangemen...
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Constitution of the United States.
chief executive should have the power to veto legislation, should be elected by Congress or the people, should be eligible to run for reelection, and should command thearmed forces. Some delegates even hoped for a limited monarchy. Not until September 8, more than three months after the convention started, did the final shape ofthe presidency emerge: a single leader, elected to a four-year term and eligible for reelection, with authority to veto bills enacted by Congress. The president was alsog...
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Constitution of the United States - U.
chief executive should have the power to veto legislation, should be elected by Congress or the people, should be eligible to run for reelection, and should command thearmed forces. Some delegates even hoped for a limited monarchy. Not until September 8, more than three months after the convention started, did the final shape ofthe presidency emerge: a single leader, elected to a four-year term and eligible for reelection, with authority to veto bills enacted by Congress. The president was alsog...
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Poterie en Egypte ancienne
Ainsi le potier se dit iqdou nedjesit, ce qui signifie« ma çon en petit », et le maçon iqdou inebou , qui se traduit par « maçon des murs ». Le limon du Nil donne une glaise très riche et très pure . Cette argile est du pain bénit pour les artisans potiers qui, depuis les temps les plus re culés, s'en servent pour con fectionner les objets usuels de la vie quotidienne. L'atelier d'un potier se com pose de ba...
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Neptune (planet) - astronomy.
The gaseous atmosphere of Neptune contains hydrogen, helium, and about 3 percent methane. It extends about 5,000 km (about 3,000 mi) above the planet’s ocean.Light reflected from Neptune’s deep atmosphere is blue, because the atmospheric methane absorbs red and orange light but scatters blue light. In 1998 astronomersalso identified molecules of methyl in Neptune’s atmosphere. Methyl molecules each contain one carbon atom and three hydrogen atoms. Methyl molecules are knownas hydrocarbon radical...
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Canadian Forces.
As the Land Force Command component of the CF, the Canadian army is responsible for land combat and for physically protecting people and land-based resources. Itis the component of the CF most often called on to support international military operations and peacekeeping missions and to maintain order in times of civil unrest. A Organization The 20,900 personnel who comprise the army’s regular force are organized into four geographically based areas. Land Force Atlantic includes the provinces of...
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Supreme Court of the United States.
The Constitution does not specify formal qualifications for membership on the Supreme Court. From the beginning, though, justices have all been lawyers, and mostpursued legal and political careers before serving on the Court. Many justices served as members of Congress, governors, or members of the Cabinet. One president,William Howard Taft, was later appointed chief justice. Some justices came to the Court from private law practice, and others were appointed from positions as lawprofessors. Man...
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Track and Field.
VI RUNNING EVENTS Running events are competitions that test athletes’ quickness, speed, and endurance. Athletes win running races by completing the distance or course in the leastamount of time. A Sprints The shortest running events, called sprints or dashes, are the premier events at a track-and-field meet. The outdoor sprints consist of the 100-meter, 200-meter, and400-meter events. Sprints contested at indoor meets include the 50-meter, 60-meter, 200-meter, and 400-meter events. Past champ...
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"A Modest Proposal" - anthology.
I SHALL now therefore humbly propose my own Thoughts; which I hope will not be liable to the least Objection. I HAVE been assured by a very knowing American of my Acquaintance in London; that a young healthy Child, well nursed, is, at a Year old, a most delicious, nourishing, and wholesome Food; whether Stewed, Roasted, Baked, or Boiled; and, I make no doubt, that it will equally serve in a Fricasie, or Ragoust. I DO therefore humbly offer it to publick Consideration, that of...
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Psychotherapy.
Other managed-care companies pay therapists a set fee to meet with a client for up to a specified maximum number of sessions depending on the nature of theproblem, free of interference from case reviewers. For example, a managed-care firm may pay a therapist $200 to hold up to eight sessions with a person. If the clientuses all eight sessions, the therapist normally loses money. But if treatment stops after two or three sessions, the therapist makes a profit. This relatively new system iscontrov...
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Atom - chemistry.
Atoms have several properties that help distinguish one type of atom from another and determine how atoms change under certain conditions. A Atomic Number Each element has a unique number of protons in its atoms. This number is called the atomic number (abbreviated Z). Because atoms are normally electrically neutral,the atomic number also specifies how many electrons an atom will have. The number of electrons, in turn, determines many of the chemical and physical properties ofthe atom. The ligh...
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Tuvalu - country.
Funafuti has a town council, and each of the other islands except Niulakita has an island council. Members of these councils are directly elected to four-year terms. Tuvalu is active in regional affairs. It is a member of the South Pacific Commission, an advisory body of Western and Pacific nations promoting social stability in theSouth Pacific, and the South Pacific Forum, a regional organization that addresses the foreign affairs and international trade of its member countries. Tuvalu became a...
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Warren G.
In his few campaign speeches, Harding relied mainly on the political effectiveness of bland generalities. Sometimes his statements were deliberately confusing. Forexample, he promised internationally minded voters that he would support an “association of nations,” while at the same time he promised “America first!” toisolationists. In this way he won the support of influential Republicans who believed in the League of Nations as well as those who opposed it. Harding's inoffensive standon the lea...
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Confucianism.
IV NEO-CONFUCIANISM After centuries of intellectual and cultural dominance by Buddhism, China began to experience a revival of Confucian thought during the Tang dynasty ( AD 618-907). It was led by poet and essayist Han Yu (Han Yü). Han Yu attacked Buddhism and Daoism, which he believed had kept government officials from seeing how they couldhelp the people. To further public welfare, he urged them to study the way of the ancient sages through the Five Classics . Han Yu almost lost his life f...
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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...
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Bill Clinton.
When Arkansas governor David Pryor ran for the U.S. Senate in 1978, Clinton ran for governor. He promised to improve the state’s schools and highways and toimprove economic conditions so that more jobs would be created. At that time, the average income of people in Arkansas ranked 49th among the 50 states. Clinton woneasily, receiving 60 percent of the vote against four opponents in the Democratic primary election and 63 percent against the Republican candidate, Lynn Lowe, in thegeneral election...
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Bill Clinton - USA History.
When Arkansas governor David Pryor ran for the U.S. Senate in 1978, Clinton ran for governor. He promised to improve the state’s schools and highways and toimprove economic conditions so that more jobs would be created. At that time, the average income of people in Arkansas ranked 49th among the 50 states. Clinton woneasily, receiving 60 percent of the vote against four opponents in the Democratic primary election and 63 percent against the Republican candidate, Lynn Lowe, in thegeneral election...
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REPÉRER UN MOT
Colorie la fleur chaque fois que tu vois le mot « fleur ».
peur lueur fleur pâleur fleur cœur beurre odeur REPÉRER UN MOT SOLUTION Colorie la fleur chaque fois que tu vois le mot « fleur ». douceur rameur chaleur sueur Entoure le four chaque fois que tu vois le mot « four ». tour four cour pour fou jour lourd sourd frou trou fourmi flou Barre le lapin chaque fois que tu ne vois pas le mot « lapin ». Il est dans les 3 lapins ! latin lapin lupin lopin lapin lambin pain lopin pati...
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réfractaire (matériau).
techniques disponibles. Enfin, certains réacteurs chimiques, à l'intérieur desquels se déroulent des réactions à haute température généralement exothermiques, peuvent être garnis intérieurement de revêtements réfractaires qui sont alors en contact avec les réactifs et les produits de la réaction. Composition physico-chimique des produits réfractaires. Cette composition est d'une très grande diversité. À titre d'exemple, une brique ordinaire, d'argile commune et de sable, constitue déjà un matér...
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Sciences et Techniques LE FER ET L'ACIER
Le fer et l'acier ! La tour Eiffel, au moment de A sa construction, à la fin des années 1880. Entièrement en fer, elle fut assemblée à l'aide de pièces et de rivets en fer forgé. Avant d'être envoyée dans le haut fourneau, � la charge passe par une machine à agglomérer. Elle y est broyée, puis grillée au gaz afin d'éliminer ses impuretés. La charge est introduite par le gueulard. Les matières solides descendent progressivement et se ramolliss...
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Calculer La Vitesse De La Lumière Grâce A Un Four
Comment Mesurer La Vitesse De La Lumière à L'aide du MicroOnde? Introduction Les ondes électromagnétiques comprennent des choses comme la lumière et les micro-ondes. Dans l'espace interstellaire, les ondes électromagnétiques peuvent traverser le vide. Contrairement aux ondes mécaniques comme les ondes sonores, qui doivent traverser l'air, l'eau ou un autre milieu solide, elles sont indépendantes de tout milieu extérieur. Des rayons gamma et rayons X à haute fréquence à la lumière ultravi...
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Dictionnaire en ligne:
ENFOURNER, verbe transitif.
Daniel, dont l'adresse à enfourner, tout en causant, la cuiller pleine dans la bouche de l'enfant, témoignait qu'il n'en était pas à ses débuts dans ce rôle de père nourricier (ROGER MARTIN DU GARD, Les Thibault, Épilogue, 1940, page 830 ). 3. Au figuré, familier. [Construit avec un complément d'attribution; avec une intention ironique] Synonymes : donner, refiler (familier). Je lui ai enfourné le conseil de se tenir coite et de faire encadrer ma lettre avec luxe (LÉON BLOY, Journal, 1904, page...
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Bridge (game).
IV DUPLICATE BRIDGE Duplicate bridge is a variety of contract bridge in which the element of luck affecting the final score is greatly decreased and the factor of skill is correspondinglyincreased. Duplicate is virtually the only game now played in championship bridge tournaments and matches. Duplicate bridge can be played by any number of players divided into pairs or teams. Each pair competes against all (or in some duplicate tournaments against half) theother pairs. The cards are all dealt...
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House (architecture)
I
INTRODUCTION
Trulli in Alberobello, Italy
Alberobello, in the Apulia region of southeastern Italy, is noted for its unusual limestone houses known as trulli (from
Greek trullos, dome).
Fresco in the Villa of the Mysteries, PompeiiThe Villa of the Mysteries, Pompeii, Italy (built about 50 bc), featured a large hall with this mural encircling it. The mural ispainted in the Second Style of Roman painting. (Historians of art recognize four periods or styles in Roman wall painting.)The mural in the Villa of the Mysteries is thought to depict the initiation rituals of a mystery religion. For this reason, it hasbeen conjectured that the hall was used for cult rituals.Bridgeman Art Li...
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Définition du terme:
CUISANT, -ANTE, participe présent et adjectif.
MAXENCE VAN DER MEERSCH, L'Empreinte du dieu, 1936, page 102. SYNTAXE : Chagrin, remords cuisant; cuisant regret d'avoir échoué; le regret cuisant des années mortes; déception, défaite, humiliation cuisante. — En particulier. [En parlant d'un sentiment] Très fort. Ennui cuisant Des besoins cuisants de réalité (ÉMILE ZOLA, Contes à Ninon, 1864, page 8 ). Ils sentirent les rêveries, les fureurs, les désirs cuisants, toutes les violences de la passion (ÉLÉMIR BOURGES. Le Crépuscule des dieux. 1884...
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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...