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Qatari Riyal
The Qatari riyal (sign: QR in Latin, in Arabic; ISO code: QAR) is the currency of the State of Qatar. It is divided into 100 dirhams ( ar, درهم). History Until 1966, Qatar used the Indian rupee as its currency, in the form of Gulf rupees. When India devalued the rupee in 1966, Qatar, along with the other states using the Gulf rupee, chose to introduce its own currency. Before doing so, Qatar briefly adopted the Saudi riyal, then introduced the Qatar and Dubai riyal following the signing of the Qatar-Dubai Currency Agreement on 21 March 1966. The Saudi riyal was worth 1.065 Gulf rupees, whilst the Qatar and Dubai riyal was equal to the Gulf rupee prior to its devaluation. Following Dubai's entry into the United Arab Emirates, Qatar began issuing the Qatari riyal separate from Dubai on 19 May 1973. The old notes continued to circulate in parallel for 90 days, at which time they were withdrawn. For a wider history surrounding currency in the region, see the history of Brit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Dollar
The United States dollar ( symbol: $; code: USD; also abbreviated US$ or U.S. Dollar, to distinguish it from other dollar-denominated currencies; referred to as the dollar, U.S. dollar, American dollar, or colloquially buck) is the official currency of the United States and several other countries. The Coinage Act of 1792 introduced the U.S. dollar at par with the Spanish silver dollar, divided it into 100 cents, and authorized the minting of coins denominated in dollars and cents. U.S. banknotes are issued in the form of Federal Reserve Notes, popularly called greenbacks due to their predominantly green color. The monetary policy of the United States is conducted by the Federal Reserve System, which acts as the nation's central bank. The U.S. dollar was originally defined under a bimetallic standard of (0.7735 troy ounces) fine silver or, from 1837, fine gold, or $20.67 per troy ounce. The Gold Standard Act of 1900 linked the dollar solely to gold. From 1934, it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steel
Steel is an alloy made up of iron with added carbon to improve its strength and fracture resistance compared to other forms of iron. Many other elements may be present or added. Stainless steels that are corrosion- and oxidation-resistant typically need an additional 11% chromium. Because of its high tensile strength and low cost, steel is used in buildings, infrastructure, tools, ships, trains, cars, machines, electrical appliances, weapons, and rockets. Iron is the base metal of steel. Depending on the temperature, it can take two crystalline forms (allotropic forms): body-centred cubic and face-centred cubic. The interaction of the allotropes of iron with the alloying elements, primarily carbon, gives steel and cast iron their range of unique properties. In pure iron, the crystal structure has relatively little resistance to the iron atoms slipping past one another, and so pure iron is quite ductile, or soft and easily formed. In steel, small amounts of carbon, other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
50 Qatari Riyal Front
5 (five) is a number, numeral and digit. It is the natural number, and cardinal number, following 4 and preceding 6, and is a prime number. It has attained significance throughout history in part because typical humans have five digits on each hand. In mathematics 5 is the third smallest prime number, and the second super-prime. It is the first safe prime, the first good prime, the first balanced prime, and the first of three known Wilson primes. Five is the second Fermat prime and the third Mersenne prime exponent, as well as the third Catalan number, and the third Sophie Germain prime. Notably, 5 is equal to the sum of the ''only'' consecutive primes, 2 + 3, and is the only number that is part of more than one pair of twin primes, ( 3, 5) and (5, 7). It is also a sexy prime with the fifth prime number and first prime repunit, 11. Five is the third factorial prime, an alternating factorial, and an Eisenstein prime with no imaginary part and real part of the form 3p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
50 Qatari Riyal
5 (five) is a number, numeral and digit. It is the natural number, and cardinal number, following 4 and preceding 6, and is a prime number. It has attained significance throughout history in part because typical humans have five digits on each hand. In mathematics 5 is the third smallest prime number, and the second super-prime. It is the first safe prime, the first good prime, the first balanced prime, and the first of three known Wilson primes. Five is the second Fermat prime and the third Mersenne prime exponent, as well as the third Catalan number, and the third Sophie Germain prime. Notably, 5 is equal to the sum of the ''only'' consecutive primes, 2 + 3, and is the only number that is part of more than one pair of twin primes, ( 3, 5) and (5, 7). It is also a sexy prime with the fifth prime number and first prime repunit, 11. Five is the third factorial prime, an alternating factorial, and an Eisenstein prime with no imaginary part and real part of the form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sand Dune
A dune is a landform composed of wind- or water-driven sand. It typically takes the form of a mound, ridge, or hill. An area with dunes is called a dune system or a dune complex. A large dune complex is called a dune field, while broad, flat regions covered with wind-swept sand or dunes with little or no vegetation are called ''ergs'' or ''sand seas''. Dunes occur in different shapes and sizes, but most kinds of dunes are longer on the stoss (upflow) side, where the sand is pushed up the dune, and have a shorter ''slip face'' in the lee side. The valley or trough between dunes is called a ''dune slack''. Dunes are most common in desert environments, where the lack of moisture hinders the growth of vegetation that would otherwise interfere with the development of dunes. However, sand deposits are not restricted to deserts, and dunes are also found along sea shores, along streams in semiarid climates, in areas of glacial outwash, and in other areas where poorly cemented san ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dhow
Dhow ( ar, داو, translit=dāwa; mr, script=Latn, dāw) is the generic name of a number of traditional sailing vessels with one or more masts with settee or sometimes lateen sails, used in the Red Sea and Indian Ocean region. Typically sporting long thin hulls, dhows are trading vessels primarily used to carry heavy items, such as fruit, fresh water, or other heavy merchandise, along the coasts of Eastern Arabia, East Africa, Yemen and coastal South Asia (Pakistan, India, Bangladesh). Larger dhows have crews of approximately thirty, smaller ones typically around twelve. History The exact origins of the dhow are lost to history. Some claim that the sambuk, a type of dhow, may be derived from the Portuguese caravel. The dhow was the ship of trade used by the Swahili. It was a dhow that transported a giraffe to Chinese Emperor Yong Le's court, in 1414. Another source suggests the ship that carried the giraffe to China was part of a large Chinese fleet led by Zheng He. Ships ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oryx
''Oryx'' is a genus consisting of four large antelope species called oryxes. Their pelage is pale with contrasting dark markings in the face and on the legs, and their long horns are almost straight. The exception is the scimitar oryx, which lacks dark markings on the legs, only has faint dark markings on the head, has an ochre neck, and has horns that are clearly decurved. The Arabian oryx was only saved from extinction through a captive-breeding program and reintroduction to the wild. The scimitar oryx, which is now listed as extinct in the wild, also relies on a captive-breeding program for its survival.Database entry includes justification for why this species is listed as extinct in the wild. Etymology The term "oryx" comes from the Greek word ὄρυξ, ''óryx'', for a type of antelope. The Greek plural form is ''óryges'', although "oryxes" has been established in English. Herodotus mentions a type of gazelle in Libya called ὄρυς, ''orus'', probably related to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camel
A camel (from: la, camelus and grc-gre, κάμηλος (''kamēlos'') from Hebrew or Phoenician: גָמָל ''gāmāl''.) is an even-toed ungulate in the genus ''Camelus'' that bears distinctive fatty deposits known as "humps" on its back. Camels have long been domesticated and, as livestock, they provide food (milk and meat) and textiles (fiber and felt from hair). Camels are working animals especially suited to their desert habitat and are a vital means of transport for passengers and cargo. There are three surviving species of camel. The one-humped dromedary makes up 94% of the world's camel population, and the two-humped Bactrian camel makes up 6%. The Wild Bactrian camel is a separate species and is now critically endangered. The word ''camel'' is also used informally in a wider sense, where the more correct term is "camelid", to include all seven species of the family Camelidae: the true camels (the above three species), along with the "New World" camelids: the llama, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Museum Of Qatar
The National Museum of Qatar is a national museum in Doha, Qatar. The current building opened to the public on 28 March 2019, replacing the previous building which opened in 1975. The building was designed by architect Jean Nouvel who was inspired by the desert rose crystal, which can be found in Qatar. The museum site includes Sheikh Abdullah bin Jassim Al Thani's Palace, which is the heart of the Qatari national identity. As of 2013, the director of the museum is Sheikha Amna. Collection A tour of the museum takes visitors through a loop of galleries that address three major, interrelated themes. The galleries are loosely arranged in chronological order, beginning with exhibitions on the natural history of the desert and the Persian Gulf, artefacts from Bedouin culture, historical exhibitions on the tribal wars, the establishment of the Qatari state, and finally the discovery of oil to the present. The displays and installations that explore these themes present audiovisual ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kentish Plover
The Kentish plover (''Charadrius alexandrinus'') is a small cosmopolitan shorebird (40-44 g) of the family Charadriidae that breeds on the shores of saline lakes, lagoons, and coasts, populating sand dunes, marshes, semi-arid desert, and tundra.Székely, T., A. Argüelles-Ticó, A. Kosztolányi and C. Küpper. 2011. Practical guide for investigating breeding ecology of Kentish plover ''Charadrius alexandrinus'', Unpublished Report, University of Bathdel Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World, Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK Both male and female birds have pale plumages with a white underside, grey/brown back, dark legs and a dark bill; however, additionally the male birds also exhibit very dark incomplete breast bands, and dark markings either side of their head, therefore the Kentish plover is regarded as sexually dimorphic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crested Lark
The crested lark (''Galerida cristata'') is a species of lark widespread across Eurasia and northern Africa. It is a non-migratory bird, but can occasionally be found as a vagrant in Great Britain. Taxonomy and systematics The crested lark was one of the many species originally described by Carl Linnaeus in his landmark 1758 10th edition of ''Systema Naturae''. It was classified in the genus ''Alauda'' until German naturalist Friedrich Boie placed it in the new genus '' Galerida'' in 1821. Colin Harrison recommended lumping members of ''Galerida'' and ''Lullula'' back into ''Alauda'' in 1865 due to a lack of defining characteristics. The current scientific name is derived from Latin. ''Galerida'' was the name for a lark with a crest, from '' galerum'', "cap", and '' cristata'' means "crested". Alban Guillaumet and colleagues noted the distinctiveness of populations from the Maghreb - birds in the dryer parts of Morocco and Tunisia had longer bills while those in more coastal n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Bee-eater
The European bee-eater (''Merops apiaster'') is a near passerine bird in the bee-eater family, Meropidae. It breeds in southern and central Europe, northern and southern Africa, and western Asia. Except for the resident southern African population, the species is strongly migratory, wintering in tropical Africa. This species occurs as a spring overshoot north of its usual range, with occasional breeding in northern Europe. Taxonomy and systematics The European bee-eater was formally described by the Swedish naturalist Carl Linnaeus in 1758 in the tenth edition of his ''Systema Naturae'' under its current binomial name ''Merops apiaster''. The genus name ''Merops'' is Ancient Greek for "bee-eater", and ''apiaster'' is Latin, also meaning "bee-eater", from ''apis'', "bee". Description This species, like other bee-eaters, is a richly coloured, slender bird. It has brown and yellow upper parts, whilst the wings are green and the beak is black. It can reach a length of , includi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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