AcharyaChanakya/simple-wikipedia huggingface dataset:
Coco the Clown (or Theo de Kovel) is a clown character who is very famous in Britain and later became famous in America. Coco was not a whiteface clown but an auguste.This type of clown is supposed to be a bit stupid, so he gets teased by another clown who is supposed to be much cleverer. Coco always gets buckets of water thrown at him or custard pies in his face.
Theo de Kovel (or Polakovs) (1900–74) made the character of Coco the Clown famous. Later his son Elwin de Beer (1923-2009) made him famous in the Netherlands
After retiring from the circus, Nicolai Poliakoff toured schools in the UK as Coco promoting road safety. He had a walking stick in the shape of a Bolesha Beacon. For this work he was awarded the OBE by the Queen.
118118118118118118118Pipo de Clown
Pipo de Clown (English: Pipo the Clown) is a clown who became very popular on Dutch television. The character was created by Wim Meuldijk. The actor who took the part of Pipo de Clown was Cor Witschge (1925-1991). The television series started in 1958 and was shown until 1980.
In the television programmes Pipo lives with his wife Mamaloe (pronounce: "Mamaloo") and their daughter Petra in a gypsy-style caravan. They say that they travel all over the world.
Recently new films have been made about Pipo de Clown.
Here are some of Pipo's famous sayings:
Coronel Fabriciano is a Brazilian city in the Vale do Aço metropolitan area, state of Minas Gerais. It is located in the region of Vale do Rio Doce and is situated 200 km from the state capital. The municipal population was estimated in 2020 by IBGE in 110,290 inhabitants, with an area of 221.252 km².
The city was founded in December 27, 1948. The devolviment of the municipality is due to the large companies in the region, such as Aperam South America (old Acesita) and Usiminas, whose industries were situated in Coronel Fabriciano at they time they were constructed. But in 1964, Fabriciano lost the industrial areas, due to the emancipation of Timóteo and Ipatinga.
It is limited with Ipatinga, Timóteo, Ferros, Joanésia, Antônio Dias and Mesquita.
Axillary bud
Robert Lang (born December 19, 1970 in Teplice, CS) is a Czech retired ice hockey centre. He played a career total of 18 years in the National Hockey League (NHL). He played for the Los Angeles Kings, Boston Bruins, Pittsburgh Penguins, Washington Capitals, Detroit Red Wings, Chicago Blackhawks, Montreal Canadiens, and the Phoenix Coyotes. In 2004, Lang won a Golden Hockey Stick for being the best Czech hockey player.
Joel Quenneville
Joel Norman Quenneville (born September 15, 1958 in Windsor, Ontario) is a retired Canadian ice hockey player. He is the current head coach for the Florida Panthers of the National Hockey League (NHL). He won the Stanley Cup when he was an assistant coach for the Colorado Avalanche in 1996. He became head coach of the Blackhawks in 2008. He replaced Denis Savard.
Aragonese
Aragonese might mean:
Vladimir Teplyakov
Vladimir Aleksandrovich Teplyakov () (November 6, 1925- December 10, 2009) was a Russian physicist who is best known for his work with particle accelerators. He, working with his friend I.M. Kapchinsky, created the Radio Frequency Quadrupole (RFQ) principle, which was very important dealing with the speed of low energy ion beams.
Teplyakov was born in the USSR on November 6, 1925. He was made to join the Red Army in January 1943 and fought in the Second World War on the Ukrainian front. After the war ended, he went to and graduated from the All-Union Correspondence Polytechnic Institute in Moscow. After leaving school, he began work at the Institute of Chemical Physics. From 1959-1966, he worked at Chelyabinsk-70, where he kept up his study of high-current proton . In 1966, he and several of the people that he worked with were moved to the Institute of High Energy Physics in Protvino, Russia.
Donovan McNabb
Donovan McNabb (born November 25, 1976 in Chicago, Illinois) is a retired American football player. He played as a quarterback in the National Football League. He played college football for Syracuse.
McNabb was picked by the Philadelphia Eagles with the second pick in the first round of the 1999 NFL Draft. With the Eagles, McNabb played fairly well. There was some controversy about his work ethic and wide receiver Terrell Owens. The Eagles made the NFC Championship game six times and the Super Bowl once. However, McNabb struggled very badly after leaving the Eagles. He later played for the Washington Redskins and the Minnesota Vikings. He retired in 2011. McNabb wore #5 throughout his career.
"Fall to Pieces" is a song by Canadian singer Avril Lavigne, and was the fifth and last single from her second album, Under My Skin; it was the fourth single in the United States. The song was produced and written by Avril Lavigne and Raine Maida. It was Lavigne's least liked song in the U.S., but was very well liked in Canada. There is no music video for this single, because the shoot for the video was cancelled.
"Fall to Pieces" was not put out in the United Kingdom, but it made it all the way to number seven on the Canadian BDS Airplay Chart, her third successful single in Canada after "Nobody's Home" and "Don't Tell Me". It made it all the way to number sixteen in South Africa. Lavigne did not advertise the single, and because of this it failed to chart on U.S. "Billboard" Hot 100; it made it all the way to number six on the Bubbling Under Hot 100 Singles chart, and at number fifty-five on the "Billboard" Pop 100; However without video the single played a lot in radios all over US, Canada and Latin America .
Moritz Wagner
Moritz Wagner (Bayreuth, 3 October 1813 – Munich, 31 May 1887) was a German explorer, collector, geographer and naturalist.
Wagner devoted three years (1836–1839) to the exploration of Algiers. It was there that he made an important discovery in natural history, which he later developed.
His idea, first based on a study of flightless beetles, was that geographical isolation could play a key role in speciation. Although at first rejected, this idea turned out to be important in the theory of evolution.
From 1852–1855, together with a companion, Wagner travelled through North and Central America and the Caribbean. In May 1843, Wagner toured the Lake Sevan region of Armenia. In his old age he committed suicide in Munich, aged 73. His brother Rudolf was a physiologist and anatomist.
Wagner's early career was as a geographer, and he published a number of geographical books about North Africa, the Middle East, and tropical America.
He was also a keen naturalist and collector, and it is for this work he is best known among biologists. Ernst Mayr, the evolutionist and historian of biology, has given an account of Wagner's significance.
During his three years in Algeria, Wagner studied (amongst other activities) the flightless beetles "Pimelia" and "Melasoma". Each genus is split into a number of species, each of which is confined to a stretch of the north coast between rivers which descend from the Atlas mountains to the Mediterranean. As soon as one crosses a river, a different but closely related species appears.
Wagner was able to make similar observations in the Caucasus and in the Andean valleys, leading him to conclude, after the "Origin of Species" had been published:
This was an early description of a process of geographical speciation. Another formulation of this idea came later: "Organisms which never leave their ancient area of distribution will never change". This cannot be literally true, and is an overstatement of his idea.
The fate of this idea was unhappy. "Unfortunately, Wagner combined [his idea] with some peculiar ideas on variation and selection" (Mayr). The leading evolutionists (Darwin, Wallace, Weismann) attacked Wagner's idea of geographic speciation, and it suffered a long decline. However, in 1942 it was reintroduced by Mayr, and the importance of geographic speciation became one of the core ideas of the evolutionary synthesis.
Modern experts such as Ernst Mayr, Jerry Coyne & Allen Orr, agree that Wagner first identified geographical speciation. However, his "migration theory" was based on a rather simple, Lamarckian idea of evolution. Wagner argued in letters to Darwin that he had missed a vital geographic component in understanding the evolution of new species. Darwin at first responded in a friendly way to these letters, and agreed that geographic isolation was important (although not the only mode of speciation). Later, he found Wagner's increasingly hysterical tone and one-sided argument upsetting, and wrote across his copy of Wagner's 1875 paper "most wretched rubbish," partly because Wagner ignored the importance of natural selection, and lifted parts of Darwin's theory that he liked without attribution, all the while claiming that Darwin's views were incorrect.
As well as Darwin, the Reverend J.T. Gulick also found Wagner's theories overstated., but in a later paper Gulick says that "Moritz Wagner, in his "Law of the Migration of Organisms", was the first to insist on the importance of geographical isolation as a factor in evolution, but when he asserted that, without geographical isolation, natural selection could have no effect in producing new species, he went beyond what could be sustained by facts".
Ernst Mayr's formulation cleared up the issues which Wagner had left unresoved: "A new species develops if a population which has become isolated from its parental species acquires during this period of isolation characters which promote or guarantee isolation when the external barriers break down". The zoological taxonomist Bernhard Rensch was also significant in keeping geographical speciation on the evolutionary menu. He identified geographical separation as the most frequent initial step towards "kladogenesis" (species splitting).
The importance of Wagner's insight is undeniable today. It was obscured for many years by his other, mistaken, ideas, but it was a genuine natural history insight gained by observation of insects in their natural habitats.
Africanized bee
Africanized honeybees are an artificial man-made hybrid of the European honeybee and African bees. They are more dangerous and defensive than regular honeybees. Because of this, some people call them 'killer bees'.
Africanized honeybees are much more protective of their beehive and more likely to sting. When one of them is surprised or scared, they all attack together and sting the same animal or person with hundreds of stings. Actually, their sting is the same as a regular honeybee's, but because they sting all together, they are much more dangerous. They usually chase their target much farther than regular honeybees, and they stay angry and ready to fight for a longer time. They have many more "guard" bees than regular honeybees.
In 1956, scientists brought African and European bees to Brazil, to see if they could mate them. They wanted to do this to make a bee that would make more honey in a hotter place. Scientists called these new bees ""Africanized honeybees"". These bees, however, were very different from regular honeybees. They would suddenly leave the colony and build a hive somewhere else. Scientists found out that the queen would decide to leave after a few months, usually taking half the colony with her. They could even take over European hives by killing the European queen bee and making their own queen bee the "queen".
Because of the queen's strange behavior of leaving the hive and starting new colonies, Africanized honeybees spread out quickly from Brazil. They have moved towards the north so that they have spread through most of South America, Mexico, and the south parts of Texas, New Mexico, Arizona, and California. Scientists are not sure how far they will spread. Some think they cannot go much more towards the north, because they do not survive well in really cold winters or extremely dry summers.
Those Africanized bees which have travelled southwards have become much tamer and are well suitable for beekeeping and making honey. The re-domesticated Africanized honeybee is usually the choice of South American beekeepers because it will produce much more honey than the ordinary honeybees. The honey production from a single hive of Africanized honey bees can be 100 kg annually and far exceeds the much smaller 3–5 kg of the various "Melipona" stingless bee species. Thus economic pressures are forcing beekeepers to switch from the traditional stingless bees of their ancestors to the new reality of the Africanized honey bee.
Ipatinga is a Brazilian city in the Vale do Aço metropolitan area, state of Minas Gerais. Its population in 2009 was 244.508 inhabitants. Its area is 165.509 km². The city was founded in April 29, 1964.
It's limited with Caratinga, Coronel Fabriciano, Mesquita, Santana do Paraíso and Timóteo.
Timóteo is a city in Brazil. It is in the Vale do Aço metropolitan area in the state of Minas Gerais. In 2009, 79,813 people lived there. The city has an area of . The city was founded in April 29, 1964.
Timóteo is ArcelorMittal Timóteo headquarters, a company of the group ArcelorMittal.
It is limited with the municipal districts of Ipatinga, Coronel Fabriciano, Antônio Dias, Jaguaraçu, Marliéria, Caratinga e Bom Jesus do Galho.
Mammal-like reptile
Mammal-like reptile is an old term for the therapsids: those synapsids which gave rise to the true mammals.
The term is both outmoded and a mistake, because mammals did not descend from reptiles. Both groups descended from early amniotes (egg-laying tetrapods), probably in the Lower or Middle Carboniferous. The precursors of reptiles are called sauropsids, and the precursors of mammals are called synapsids. The immediate ancestors of the mammals came from a group of therapsids called the cynodonts.
There are a number of characteristics which cannot be seen on fossils, but which are of great importance.
Mammals are distinguished from reptiles by fundamental differences in the development of the blood system. These differences are such that it would be almost impossible for mammals to be derived from reptiles.
Cleidoic egg
The cleidoic egg (from Greek kleistos = closed) is the type of egg which reptiles and birds lay. Mammalian reproduction has evolved from laying cleidoic eggs to live birth. The cleidoic egg is sometimes called the amniotic egg, because it is characteristic of amniotes.
These eggs have a protective shell, and are laid out of water. The shell is porous to air, and may be flexible or calcareous (hard).The calcareous shell prevents the egg from desiccation. The eggs contain all the food the embryo needs to develop into a hatchling. As a result, the amphibian's larval stage, the tadpole, is not needed by reptiles or birds. The special membranes that support these eggs are typical traits of all amniotes, including mammals.
The significance of the cleidoic egg is that it enables reproduction out of, and often away from, water. The cleidoic egg has been called "a private little pond", from the way it gives water and nutrition to the embryo. Cleidoic eggs must have evolved in the early or middle Carboniferous, "after" the early tetrapods evolved, but "before" the amniotes split into sauropsids (reptile ancestors) and synapsids (mammal ancestors).
The basic reproduction strategy of amphibia (frogs, for example), is to lay a huge number of eggs, which are left to their own fate. The strategy of amniotes is to invest more in the production of eggs, lay fewer eggs and take some care of them.
Because the eggs are laid on land, internal fertilisation is needed. Thus, from the initial step of a cleidoic egg comes a number of changes in behaviour. With the changes in behaviour comes better and more flexible brains. Some reptiles, for example, crocodiles and birds, look after and protect their young. Mammals are an extreme case: they carry the protection and nursing of the young much further. All mammals provide milk for their young, and many smaller mammals raise their young in burrows, providing a meaasure of security. Humans go even further still, with the long period of learning before their young are independent. Also, in human evolution, there is a reduction in instinctive behaviour, which is inherited. Instead, there is a great increase in learned behaviours and social life. These later adaptations were made possible by the earlier evolution of the cleidoic egg.
Live birth is a comparatively recent adaptation. Monotreme mammals do still lay eggs. It is the marsupial and eutherian mammals which developed live birth. Actually,the embryo developing in the womb has the same membranes round it as does the embryo inside a bird egg. Mammals give birth to live young because the development takes place internally. Live birth has evolved independently a number of times in reptiles, for example Ichthyosaurs gave birth to live young. So do some snakes.
The cleidoic egg is a good example of an evolutionary innovation which permitted the invasion of a vast range of new habitats, and led to one of the greatest adaptive radiations in the history of the vertebrates. In comparison, the amphibia, whose reproduction is tied to water, are represented today by just a few highly specialised groups.
Some authors make a distinction between amniotic eggs (of reptiles, birds and mammals) and closed eggs of invertebrate groups such as insects and spiders. In that case:
This is logical, but in practice the terms are usually synonymous.
Terrapin
A terrapin is a turtle that lives in brackish water. They are named for the diamond pattern on their shells. They eat mollusks, crabs, and fish. Terrapins are sexually dimorphic. Females are much larger than males. Males range between 4 and 5 inches. Females average nearly 7 inches. The largest terrapin on record was a female measuring 9 inches.
A terrapin is one of several small species of turtle living in fresh or brackish water. Terrapins do not form a taxonomic unit, and may not be related. Many belong to the families Geoemydidae and Emydidae.
The name "terrapin" is derived from "torope", a word in the Native American Algonquian language that refers to the species, Malaclemys terrapin. It appears that it became part of common usage during the colonial era of North America and was carried back to Great Britain. Since then, it has been used in common names for turtles in the English language. In the UK, red-eared sliders are known as red-eared terrapins.
Regions of Brazil
Brazil is currently divided into five regions (also called macroregions) by the Instituto Brasileiro de Geografia e Estatística (IBGE). These divisions are composed of states with similar cultural, economical, historical and social aspects, and, although information given by this type of division is not very accurate from the scientific point of view, this division is the most widely used in Brazil because official information given by the IBGE uses this system.
Vale do Aço metropolitan area
The Vale do Aço metropolitan area (Região Metropolitana do Vale do Aço, in Portuguese) is a metropolitan area in Minas Gerais, Brazil, comprising only the four municipalities of Coronel Fabriciano, Ipatinga, Santana do Paraíso and Timóteo, but have an influence area of 24 other municipalities.
The region has become internationally known due to large companies that are in the region, such as the Cenibra, Aperam South America (old Acesita) and Usiminas, all with an increasing volume of exported products.
Mantle (mollusc)
The mantle is a significant part of the anatomy of molluscs: it is the dorsal body wall which covers the organs of digestion, reproduction and movement.
In many, but not all, species of molluscs, the epidermis (skin) of the mantle secretes calcium carbonate and conchiolin, and creates a shell.
The word "mantle" means cloak or cape, and does often resemble a cloak. The edges of the mantle may extend far beyond the main part of the body, forming flaps, double-layered structures adapted for many different uses, including for example, the "siphon".
The "mantle cavity" is a central feature of molluscan biology. This cavity is formed by the mantle skirt, a double fold of mantle which encloses a water space. This space contains the mollusc's gills, anus, and organs for taste, excretion and reproductive organs.
The mantle cavity functions as a respiratory chamber in all molluscs. In bivalves it is usually part of the feeding structure. In some mollusks the mantle cavity is a brood chamber, and in cephalopods and some bivalves such as scallops, it is a locomotory organ.
The mantle is highly muscular. In cephalopods the contraction of the mantle is used to force water through a tubular "siphon", and this propels the animal rapidly through the water. In other molluscs, it is used as a kind of "foot" for locomotion.
Carboniferous
The Carboniferous was the geological period after the Devonian and before the Permian. It lasted from about 359 to about 299 million years ago. It is the fifth period of the Paleozoic era and the Phanerozoic eon.
In the U.S.A. the Carboniferous is divided into the Mississippian (lower part, 359–323.2 mya) and the Pennsylvanian (upper part, 323.2–299 mya). In Europe the terms lower, middle and upper are used.
The early tetrapods split first into two major groups: the amphibians, which laid their eggs in water, and the amniotes, who laid their cleidoic eggs on land. The amniotes gave rise to two groups both of which became dominant at different times. They were the synapsids, which eventually gave rise to the mammals, and the sauropsids, which gave rise to the dinosaurs and other reptiles. These momentous events took place in the lower part of the Carboniferous, the Mississippian.
The Carboniferous is named after the "coal measures", the remains of peat formed by dense tropical wetland forests. New kinds of vascular plants with thick bark grew in the forests. Much of the coal came from this bark. This biota occurred in the upper part of the period, the Pennsylvanian, from 315–300 million years years ago.
These forests were on the equator, and the wetlands, which are always low-lying, stretched across the supercontinent of Laurussia. This included what is now North America in the west, through what is now Europe to China in the east. The river plain which was the heart of the wetland stretched 5000 km from eastern Canada to the Ukraine, and was 700 km wide.
In the Carboniferous, the great tropical rainforests of Euramerica supported towering lycopodiophyta, and a mix of vegetation, as well as a great diversity of animal life: giant dragonflies, millipedes, cockroaches, amphibians, and the first amniotes.
This kind of climate and geography has no exact parallel today, but the peat swamp forests in Indonesia and Malaysia, the Amazon Basin, the Mississippi River system and the Okefenokee swamp give some idea. The swamps were dominated by giant clubmosses, including "Lepidodendron". They were the earliest trees, which later replaced by conifers and flowering plants. Sometimes other plants from the levee got swept down by the river, such as horsetails, ferns and tree-like pteridosperms.
The wetland forests ended when the land level was raised by the pressure of the Gondwana continent against Laurussia. This caused the zone of contact to rise. The end of the coal measures marks the end of the Carboniferous period. China was too far away to be affected. There, the wetland forests continued for another 50 million years, into the Permian.
Mesozoic
The Mesozoic was the geological era in which dinosaurs lived, as well as the first birds and mammals. It lasted about 186 million years, starting 252.2 mya (million years ago) with the P/Tr extinction and ending 66 mya with the K/T extinction (the one that killed dinosaurs).
Dinosaurs appeared around 231 mya (21 million years after the beginning of the Mesozoic). They evolved from early reptiles called the archosaurs (a group of which modern birds and crocodiles are still part).
The Mesozoic is the middle of the three eras that make up the Phanerozoic eon. Before the Mesozoic was the Palaeozoic era. The K/T extinction in 66 mya also marks the beginning of the Cenozoic era, the one we live in.
The three Mesozoic periods were:
Palaeozoic
The Palaeozoic (or Paleozoic) era is the earliest of the three eras of the Phanerozoic. Its name means "early life". It lasted from about 541 to 252 million years ago (mya), and ended with the greatest extinction event, the Permian–Triassic extinction event.
The Palaeozoic began with an explosion of life forms. The Cambrian explosion marks the era with thousands of new life forms in the ancient seas. The era saw many important events, including the development of most invertebrate groups, life's conquest of land, the evolution of fish, reptiles, synapsids (the ancestors of mammals), amphibians, insects, and plants, the formation of the supercontinent of Pangea, and at least two distinct ice ages. The earth rotated faster than it does today so days were shorter, and the nearer moon caused stronger tides.
The six periods of the Palaeozoic are:
Blackjack (Twenty-one, pontoon or "Vingt-et-un") is a kind of card game which usually involves gambling. It is often played in casinos. There is a dealer, who deals cards from a special device called a 'dealer's shoe' or a 'shuffling machine'. The dealer has one to eight decks. When there are one or two decks, the dealer usually holds the decks instead of dealing from a shoe.
It is a 'dealer versus players game'. Each player has their own game against the dealer. Cards are dealt in succession, and bets placed for each hand. Players win if their cards add up to more than the dealer's hand to a limit of 21. Hands which add up to more than 21, called busted hands, lose. Face cards count as 10. Aces can count as one or eleven.
'Blackjack', an ace and a face card or ten, is the top scorer. Blackjack usually pays a bonus. Five cards adding to 21 or fewer is the next ranking hand. Apart from that, unbusted hands rank by total add-up. Hands below the dealer's hand lose unless the dealer goes over 21 (busts). Hands equal to the dealer's keep their chips. If both the player and dealer bust, the dealer wins.
Players have a choice whether or not to get extra cards. Stand means to get no more cards and hit means to ask for another card. To stand, wave your hand back and forth. To ask for another card, wave your hand toward you. You can ask for any number of cards unless you bust. The dealer has rules as to when he takes extra cards for himself (or herself). In the UK, the dealer must stand on 16. These rules are set by the casino and cannot change after the game has started. In some states or countries, the rules are set by the government.
There is some skill in blackjack, because the odds change as the cards are dealt. The critical information is the numbers of tens (including face cards) which have been dealt. This is because they are the common cause of 'busting' the dealer hand and because they are needed for a blackjack. Aces are also important because they are needed for a blackjack. Keeping track of the cards is called 'card counting'. It is legal if done without a device like a computer. But, many casinos tell players to leave if they think are counting the cards.
Over the years the origin of Blackjack, like many other games, has eluded researchers for a long time and which continues to be hotly debated to this day. Till date there has been no clear consensus, but most agree it probably originated in French casinos around 1700, where it was called Vingt-et-Unwhich, translated, means twenty-one. Most believe it was probably derived from the French card games, Chemin de Fer, and French Ferme, which were in vogue at that time. Another of its version was prevalent in Spain, which was called 'One and Thirty'. The basic rule of the Spanish version was to reach 31 with a minimum of three cards.A theory that's also doing the rounds is that Blackjack was an invention by the Romans. It is believed that Romans used to play this game with wooden blocks of different numerical values. This theory holds some weight as Romans loved gambling, but that by no means confirms the theory. Among the various versions of the game, 'Vingt-et-Un' or '21' continued to grow in popularity and reach. It gradually spread to North America thanks to French colonists and soon after it was played throughout the continent. The rules of Blackjack were then different from those of modern or contemporary Blackjack. Just to elaborate, in this form of Blackjack, only the dealer was permitted to double. Also, a betting round was there between each of the playing cards dealt.The game was still termed '21' when it gained popularity in Nevada in 1931 as the State first chose to make gambling legal. Its origin is disputed, but it is certainly related to several French and Italian gambling games. In Britain since World War I, the informal game has been called pontoon. To draw more people to the game, some casinos then offered a special bet: A hand featuring either of the black jacks (the Jack of Spades or that of Clubs) plus the Ace of Spades would pay 10-to-1 odds on the lucky player's bet. Although casinos later discontinued this peculiar payout, the name 'blackjack' or 'black jack' remained, as the game is known today.
Five of Clubs: "Watson’s card". The name has nothing to do with Sherlock Holmes but refers to a famous gambler who is supposed to have won £10,000 at Faro through his wager in connection with this card.Blackjack was not conceived by any one person at one definite point of time. On the contrary, blackjack has evolved over centuries; it continues to evolve and grow even today, thanks to the Internet. Fuelling its popularity the online casino industry has developed various versions of the game which has truly revolutionized it.
Now a few reputed casino operators have started an innovative and far more enjoyable concept of this game: live blackjack game with real dealers. Live Blackjack is the most advanced way to play your favourite casino game right in the comfort of your home, without having to go a long way to a field-based casino.
This is an example of a Blackjack game. Players are named by gambling chip colour: white, brown, blue and black.
The dealer has given two cards each to the four players who are betting. One of the dealer's two cards is face-up so all the players can see it (an Ace), and the other is face down.
The dealer turns their card over and gets a 6, together with the Ace takes them to 17, and stands because the dealer must stand on 17. (In this case the dealer must stand on a "soft" 17). Results:
Phanerozoic
The Phanerozoic eon is the current eon on the geologic timescale. It is the one in which abundant animal life has existed. It covers about 541 million years, and goes back to the time when hard-shelled animals first appeared. It was once thought that life began in the Cambrian, the first period of this eon.
The time before the Phanerozoic, formerly called the "Precambrian", is now divided into the Hadean, Archaean and Proterozoic eons.
The exact time of the boundary between the Phanerozoic and the Proterozoic is slightly uncertain. In the 19th century, the boundary was set at the first abundant metazoan fossils. But several hundred kinds of Proterozoic metazoa have been discovered in the Ediacaran. Study of the Ediacaran biota started in the 1950s. There are three dividing points at the Proterozoic-Phanerozoic boundary. It might be where the first trilobites and archaeocyatha appear; or at the first appearance of signs of burrowing; or at the first appearance of the 'small shelly fauna'. The three different dividing points are within a few million years of each other.
In the Phanerozoic biodiversity increased hugely:
During the period covered, continents drifted about, eventually collecting into a single landmass known as Pangea and then splitting up into the current continental landmasses.
The Phanerozoic is divided into three eras: the Palaeozoic, Mesozoic, and Cainozoic.
Skip-Bo
The Ordovician is the second period of the Paleozoic era and the Phanerozoic eon. It lasted from about 485.4 million years ago (mya) to 443.4 mya. It follows the Cambrian period and is followed by the Silurian period.
The Ordovician was named after the Welsh tribe of the "Ordovices". It was defined by Charles Lapworth in 1879. He recognized that the fossils in the disputed strata were different from those of the Cambrian or the Silurian. Therefore, he reasoned, they should be placed in a period of their own.
Recognition of the Ordovician period was slow in Britain, but elsewhere it was quickly accepted. In 1906 it was adopted as an official period of the Paleozoic era by the International Geological Congress.
The Ordovician ended with a series of extinction events that, together amount to the second greatest extinction of the Phanerozoic. This was the EndOrdovician extinction event.
Sea levels were high during the Ordovician. Shallow (<50 metres) inland seas were the greatest for which evidence is preserved in the rocks.
During the Ordovician, the southern continents collected into a single continent called Gondwana. Gondwana started the period in equatorial latitudes and, as the period progressed, drifted toward the South Pole. Early in the Ordovician, the continents Laurentia (present-day North America), Siberia, and Baltica (present-day northern Europe) were still independent continents.
The Ordovician was a time of calcite sea geochemistry in which low-magnesium calcite was the main marine precipitate of calcium carbonate.
For most of the Ordovician, life continued to flourish, but near the end of the period the EndOrdovician extinction event seriously affected planktonic forms like conodonts, graptolites, and some groups of trilobites. Brachiopods, bryozoans and echinoderms were also heavily affected, and the cone-shaped nautiloids died out completely, except for rare Silurian forms.
The extinctions may have been caused by an ice age that occurred at the end of the Ordovician period: the end of the Ordovician was one of the coldest times in the last 600 million years of earth history.
On the whole, the fauna that emerged in the Ordovician set the scene for the rest of the Palaeozoic. The fauna was dominated by suspension feeders, mainly with short food chains. The ecological system reached a new level of complexity far beyond that of the Cambrian fauna.
Though less famous than the Cambrian explosion, the Ordovician featured an adaptive radiation, which was no less remarkable. Marine genera increased fourfold, resulting in 12% of all known Phanerozoic marine fauna. Another change in the fauna was the strong increase in filter feeding organisms. The articulate brachiopods, cephalopods, and crinoids took over. Articulate brachiopods, in particular, largely replaced trilobites in shelf communities. This illustrates the greatly increased biodiversity of carbonate shell-secreting organisms in the Ordovician compared to the Cambrian. Although solitary corals date back to at least the Cambrian, reef-forming corals appeared in the early Ordovician.
Molluscs, which appeared during the Cambrian or even the Ediacaran, became common and varied, especially bivalves, gastropods, and nautiloid cephalopods. Now-extinct marine animals called graptolites thrived in the oceans. Some new cystoids and crinoids appeared.
It was long thought that the first true vertebrates (fish — Ostracoderms) appeared in the Ordovician, but recent discoveries in China show they probably originated in the Lower Cambrian. The very first Gnathostomata (jawed fish) appeared in the Upper Ordovician.
During the Middle Ordovician there was a large increase in bioeroding (shell and rock-boring) organisms. This is known as the Ordovician Bioerosion Revolution. It is marked by a sudden abundance of hard substrate trace fossils.
In the Lower Ordovician, trilobites were joined by many new brachiopods, bryozoans, planktonic graptolites and conodonts, and many types of molluscs and echinoderms, including the ophiuroids ("brittle stars") and the first sea stars. Nevertheless the trilobites remained abundant, with all the Late Cambrian orders continuing, and being joined by the new group Phacopida. The first evidence of land plants also appeared.
Trilobites in the Ordovician were very different from their predecessors in the Cambrian. Many trilobites developed bizarre spines and nodules to defend against predators such as primitive sharks and nautiloids. Other trilobites evolved to become swimming forms. Some trilobites even developed shovel-like snouts for ploughing through muddy sea bottoms. Some trilobites such as "Asaphus kowalewski" evolved long eyestalks to assist in detecting predators whereas other trilobite eyes in contrast disappeared completely.
The renowned Burgess Shale fauna disappears in the Middle Cambrian. It is now known that it did not go extinct, but survived, and thrived where the circumstances were right. A recently discovered lagerstätte (a deposit of exceptionally preserved fossils) has been found in the Fezouata Formation, Morocco. The site contains remarkable fossils of soft-bodied animals from a muddy ocean floor. The fauna also includes some hard-bodied animals such as horseshoe crabs. Probably low oxygen conditions kept predators and scavengers to a minimum.
The Silurian was the period from the end of the Ordovician, about 443.4 million years ago (mya) to the beginning of the Devonian period, about 419 mya. It is the third period of the Paleozoic era and the Phanerozoic eon and the shortest period in the Paleozoic.
As with other geologic periods, the rock beds that define the period's start and end are well identified, but the exact dates are uncertain by several million years. The base of the Silurian is set at a major extinction when 60% of marine species were wiped out, the End-Ordovician extinction event.
The Silurian was the first period to see macrofossils of biota on land, in the form of moss forests along lakes and streams as well as millipedes and scorpions colonizing the land later in the period. The fossil record of Sea Scorpions reached its greatest extent in the middle Silurian, about 430 million years ago.
The first fossil records of vascular plants, appeared in the second half of the Silurian period. The earliest known representatives of this group are the "Cooksonia" (mostly from the northern hemisphere) and "Baragwanathia" (from Australia). A primitive Silurian land plant with xylem and phloem but no differentiation in root, stem or leaf, was much-branched "Psilophyton". This plant reproducied by spores and respired through stomata on every surface, and probably photosynthesized in every tissue exposed to light.
Some evidence suggests the presence of primitive predatory arachnids and myriapods in later Silurian rocks. Predatory invertebrates would indicate that simple food webs were in place which included non-predatory prey animals.
Devonian
The Devonian is the fourth period of the Paleozoic era and the Phanerozoic eon. It lasted from about 419 million years ago (mya) to about 359 mya. It is named after Devonshire, England, where rocks from this period were first studied.
Sea levels were high, and there was a great variety of fish and other marine organisms. The Devonian fish included the Agnatha (jawless fish), the Acanthodii (spiny fish), the Placoderms (armoured fish), the Chondrichthyes (cartilaginous fish), and the early Osteichthyes (bony fish). The Devonian strata are divided into lower, middle and upper subdivisions.
During the Devonian the evolution of fish into tetrapods occurred. Various terrestrial arthropods also became established. The first seed-bearing plants spread across dry land, forming huge forests.
The supercontinent of Gondwana was to the south, and the continent of Siberia to the north. The early form of the small continent of Euramerica was in between. The supercontinent Pangaea was just starting to form.
By the late Devonian, the land had been colonized by plants and insects. In the oceans, massive reefs were built. Euramerica and Gondwana were beginning to converge into what would become Pangaea.
Tectonic and volcanic activity was high. A series of extinction events occurred towards the end of the Devonian, including a major event at the Frasnian-Famennian boundary in the Late Devonian, about 364 mya.
A major extinction occurred at the start of the last phase of the Devonian period, the Frasnian-Famennian boundary, about 372.2 mya. Almost all the fossil agnathan fishes suddenly disappeared. A second strong extinction closed the Devonian period. The late Devonian extinction was one of five major extinction events in the history of the Earth. The cause or causes are not known.
Proterozoic
The Proterozoic eon comes before the Phanerozoic. It was a period before the first abundant complex life on Earth. The name Proterozoic comes from the Greek "earlier life". The Proterozoic Eon extended from 2500 million years ago (mya) to 541 mya. It is the most recent part of the former Precambrian.
The Proterozoic consists of 3 geologic eras, from oldest to youngest:
The well-identified events were:
Study of these rocks shows that the eon featured massive, rapid continental accretion (unique to the Proterozoic), supercontinent cycles, and mountain building.
Cainozoic
The Cainozoic (Cenozoic) is the current geological era. It began 66 million years ago and continues today. Before it was the Mesozoic.
During the Cainozoic the continents moved into their present positions. The climate started warm, but cooling continued steadily. Finally ice ages occurred.
The word Cainozoic is derived from Greek "kainos" = "new", and "zoe" = "life". 'Cainozoic' may be spelled 'Cenozoic'. It has three periods, and the periods are split into stages.
Previously, what is now the Cainozoic was divided into two periods, the Tertiary and the Quaternary. The Tertiary corresponded to the Palaeogene+Neogene. Now, the term 'Tertiary' is not used. Officially, it is 'deprecated'.
On land, the Cainozoic is the era of mammals, and of birds and flowering plants. Grassland became a major habitat. Aquatic mammals took over the roles of predatory reptiles like the mosasaurs and plesiosaurs. As a result, the ecological landscape of the Cainozoic has become quite different from the Mesozoic.
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Default gateway
A default gateway is the IP address used to get out of your network.
Token passing
Token passing is a communication protocol used in telecommunications. The system uses a signal called a "token" to limit when a device can transmit on the network. Only the device with the token can transmit. When that device is done, the token is sent to the next device. With large transmissions, the token may move to the next station before the transmission is finished. The device has to wait until it gets the token back before it can continue to send data. The most well known examples of token passing are token ring and ARCNET.
The rules of the system say how long a device may keep the token, how long it can transmit for and how to create a new token if there is not one in use.
Carrier sense multiple access
Carrier Sense Multiple Access (CSMA) is a Media Access Control (MAC) protocol. When transmitting on a medium that is shared by many transmitters, the transmitter first checks to see that nothing else is already transmitting. Examples of shared transmission medium include an electrical bus, or part of the electromagnetic spectrum.
"Carrier Sense" means that a transmitter uses feedback from a receiver to know if the medium is already in use before trying to send. That is, it tries to find a signal from another station before trying to transmit. If a signal is found, the station waits for that transmission to end before starting its own transmission.
"Multiple Access" means that many stations send and receive on the medium. Transmissions are usually received by all other stations using the medium.
Archaean
The Archaean (or Archean) eon is the geological period after the Hadean and before the Proterozoic. It is one of the four main time periods (eons) of Earth history. The Archaean lasted from 4,000 million years ago (mya) to 2,500 mya. It contains the first sedimentary rocks, and the first fossil life forms, which were cyanobacteria, and acritarchs.
Most of the rocks which survive are volcanic (igneous) and metamorphic in origin. Volcanic activity was everywhere. When the Archaean began, the Earth's heat flow was nearly three times higher than it is today. It was still twice the current level when the Archaean ended, 2,500 mya. This high level of heat flow may have made plate tectonics more vigorous than today. The question of when plate tectonics began is a major research area. The large supercontinent Vaalbara formed in the Archaean. There were oceans already, before the Archaean.
The atmosphere almost entirely lacked free oxygen, and instead, it was mostly methane and CO.
Fossil bacterial mats, called stromatolites, are found throughout the Archaean after about 3,500mya. These were formed by cyanobacteria, which used photosynthesis and gave off oxygen as a by-product. Initially, this oxygen was absorbed by combining with iron ions in solution. Not until much later did oxygen build up in the atmosphere.
Fossil raindrop marks have been found in the later Archaean, 2,700 mya. The rocks were discovered in Ventersdorp in the North West Province of South Africa in the 1980s.
Barcelona Metro line 1
Line 1, shortened to L1 and known as "Hospital de Bellvitge - Fondo", coloured red and often simply called "Línia vermella" ("Red Line"), is the second oldest metro line in Barcelona, after L3. It is operated by Transports Metropolitans de Barcelona (TMB).
Stations or lines shown in italics are under construction.
Hadean
The Hadean is the geological eon before the Archaean. It began at the Earth's formation about 4.6 billion years ago, and ended 4 billion years ago. The name "Hadean" comes from Hades, Greek for "Underworld", due to the conditions on the Earth at the time. The geologist Preston Cloud first used the term in 1972. Meteorite bombardment, volcanism and high temperatures were very widespread on the early Earth.
There are no sedimentary rocks from the Hadean at all. The earliest geological objects on Earth are some zircons, dated to about 4,400 million years ago (mya). Oceans would probably have formed as soon as the temperature allowed. It is thought that constant bombardment kept the Earth in a molten state until about the end of the eon.
Early in Earth history, the Moon was torn out by a massive collision with a proto-planet. The evidence for this giant impact hypothesis is:
An explanation for the general lack of Hadean rocks (older than 3800 mya) is the large amount of rocky and icy debris present in the early Solar System. After the eight planets formed, large numbers of leftover protoplanets, asteroids, and comets pursued eccentric orbits throughout our system, bombarding the early Earth and the other planets and moons until approximately 3800 mya. This activity may have prevented any large crustal fragments from forming by literally shattering the early protocontinents. A barrage of particularly large impacts known as the Late Heavy Bombardment represents the climax of this violent era.
No life forms are known from this eon. The early atmosphere contained carbon dioxide, methane and nitrogen, but almost no oxygen.
Permian
The Permian is a geological period which started about 299 million years ago (mya), and ended about 252 mya. It is the sixth and last period of the Paleozoic era and the sixth period in the Phanerozoic eon, and ended in the largest mass extinction known to science.
The climate in the Permian was quite varied. At the start of the Permian, the Earth was still at the grip of an Ice age from the Carboniferous. Glaciers receded around the mid-Permian period as the climate gradually warmed, drying the continent's interiors. In the late Permian period, the drying continued although the temperature cycled between warm and cool cycles.
During the Permian, tetrapod life, (amphibians, Sauropsids and Synapsids) which evolved in the Carboniferous, became widespread and diverse. The first modern trees (conifers, ginkgos and cycads) appeared in the Permian.
The Permian was also a period of adaptive radiation in insects. Beetles (Coleoptera) appeared; so did flies (Diptera). 22 out of a total of 36 known orders of insects are known from the Permian. Some became extinct in the end-Permian event, but more radiation followed in the Mesozoic. Insects were probably, by the end of the Permian, the largest phylum, in terms of number of species.