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Dredging (earthworks)
Dredging is the Digging, excavation of material from a water environment. Possible reasons for dredging include improving existing Water feature, water features; reshaping land and water features to alter drainage, navigability, and commercial use; constructing dams, Levee, dikes, and other controls for streams and shorelines; and recovering valuable mineral deposits or marine life having commercial value. In all but a few situations the excavation is undertaken by a specialist floating heavy machinery, plant, known as a dredger. Usually the main objectives of dredging is to recover material of value, or to create a greater depth of water. Dredging systems can either be shore-based, brought to a location based on Barge, barges, or built into purpose-built vessels. Dredging has significant environmental impacts: it can disturb Marine sediment, marine sediments, leading to both short- and long-term water pollution, destroy important Marine ecosystem, seabed ecosystems, and can r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dredge (PSF)
Dredging is the Digging, excavation of material from a water environment. Possible reasons for dredging include improving existing water features; reshaping land and water features to alter drainage, navigability, and commercial use; constructing dams, Levee, dikes, and other controls for streams and shorelines; and recovering valuable mineral deposits or marine life having commercial value. In all but a few situations the excavation is undertaken by a specialist floating heavy machinery, plant, known as a dredger. Dredging is carried out in many different locations and for many different purposes, but the main objectives are usually to recover material of value or use, or to create a greater depth of water. Dredges have been classified as suction or mechanical. Dredging has significant environmental impacts: it can disturb marine sediments, leading to both short- and long-term water pollution, destroy important Marine ecosystem, seabed ecosystems, and can release human-sour ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artificial Island
An artificial island is an island that has been constructed by people rather than formed by natural means. Artificial islands may vary in size from small islets reclaimed solely to support a single pillar of a building or structure to those that support entire communities and cities. Early artificial islands included floating structures in still waters or wooden or megalithic structures erected in shallow waters (e.g. crannógs and Nan Madol discussed below). In modern times artificial islands are usually formed by land reclamation, but some are formed by the incidental isolation of an existing piece of land during canal construction (e.g. Donauinsel, Ko Kret, and much of Door County, Wisconsin), or flooding of valleys resulting in the tops of former knolls getting isolated by water (e.g., Barro Colorado Island). One of the world's largest artificial islands, René-Levasseur Island, was formed by the flooding of two adjacent reservoirs. History Despite a popular image of mode ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Draga Cavafango Leonardo 2 - Museo Scienza E Tecnologia Milano
Draga may refer to: People * Draga (surname) * Draga (given name) Geography In Croatia: * Mošćenička Draga, a village and a municipality in Primorje-Gorski Kotar County * Draga, Požega-Slavonia County, a village near Velika, Croatia * Draga, Rijeka, an area of the city of Rijeka, Primorje-Gorski Kotar County In Romania: * Valea Dragă River, Romania * Draga, a village in Silivașu de Câmpie Commune, Bistriţa-Năsăud County, Romania In Serbia: * Draga (Tutin), a village in the Municipality of Sandzak In Slovenia: * Draga, Ig, a settlement in the Municipality of Ig * Draga, Loški Potok, a settlement in the Municipality of Loški Potok * Draga, Nova Gorica, a settlement in the Municipality of Nova Gorica * Draga pri Šentrupertu, a settlement in the Municipality of Šentrupert * Draga pri Sinjem Vrhu, a settlement in the Municipality of Črnomelj * Draga, Škofja Loka, a settlement in the Municipality of Škofja Loka * Draga, Šmarješke Toplice, a settlement in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Draga Cavafango Leonardo - Museo Scienza E Tecnologia Milano
Draga may refer to: People * Draga (surname) * Draga (given name) Geography In Croatia: * Mošćenička Draga, a village and a municipality in Primorje-Gorski Kotar County * Draga, Požega-Slavonia County, a village near Velika, Croatia * Draga, Rijeka, an area of the city of Rijeka, Primorje-Gorski Kotar County In Romania: * Valea Dragă River, Romania * Draga, a village in Silivașu de Câmpie Commune, Bistriţa-Năsăud County, Romania In Serbia: * Draga (Tutin), a village in the Municipality of Sandzak In Slovenia: * Draga, Ig, a settlement in the Municipality of Ig * Draga, Loški Potok, a settlement in the Municipality of Loški Potok * Draga, Nova Gorica, a settlement in the Municipality of Nova Gorica * Draga pri Šentrupertu, a settlement in the Municipality of Šentrupert * Draga pri Sinjem Vrhu, a settlement in the Municipality of Črnomelj * Draga, Škofja Loka, a settlement in the Municipality of Škofja Loka * Draga, Šmarješke Toplice, a settlement in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panama Canal
The Panama Canal ( es, Canal de Panamá, link=no) is an artificial waterway in Panama that connects the Atlantic Ocean with the Pacific Ocean and divides North and South America. The canal cuts across the Isthmus of Panama and is a conduit for maritime trade. One of the largest and most difficult engineering projects ever undertaken, the Panama Canal shortcut greatly reduces the time for ships to travel between the Atlantic and Pacific oceans, enabling them to avoid the lengthy, hazardous Cape Horn route around the southernmost tip of South America via the Drake Passage or Strait of Magellan and the even less popular route through the Arctic Archipelago and the Bering Strait. Colombia, France, and later the United States controlled the territory surrounding the canal during construction. France began work on the canal in 1881, but stopped because of lack of investors' confidence due to engineering problems and a high worker mortality rate. The United States took over the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suez Canal Company
Suez ( ar, السويس '; ) is a seaport city (population of about 750,000 ) in north-eastern Egypt, located on the north coast of the Gulf of Suez (a branch of the Red Sea), near the southern terminus of the Suez Canal, having the same boundaries as Suez Governorate. It has three harbours, Adabiya, Ain Sokhna and Port Tawfiq, and extensive port facilities. Together they form a metropolitan area, located mostly in Africa with a small portion in Asia. Railway lines and highways connect the city with Cairo, Port Said, and Ismailia. Suez has a petrochemical plant, and its oil refineries have pipelines carrying the finished product to Cairo. These are represented in the flag of the governorate: the blue background refers to the sea, the gear refers to Suez's status as an industrial governorate, and the flame refers to the petroleum firms of Suez. The modern city of Suez is a successor of the ancient city of Clysma (, meaning "surf, waves that break"; ; ), a major Red Sea port ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leonardo Da Vinci
Leonardo di ser Piero da Vinci (15 April 14522 May 1519) was an Italian polymath of the High Renaissance who was active as a painter, Drawing, draughtsman, engineer, scientist, theorist, sculptor, and architect. While his fame initially rested on his achievements as a painter, he also became known for #Journals and notes, his notebooks, in which he made drawings and notes on a variety of subjects, including anatomy, astronomy, botany, cartography, painting, and paleontology. Leonardo is widely regarded to have been a genius who epitomized the Renaissance humanism, Renaissance humanist ideal, and his List of works by Leonardo da Vinci, collective works comprise a contribution to later generations of artists matched only by that of his younger contemporary, Michelangelo. Born Legitimacy (family law), out of wedlock to a successful Civil law notary, notary and a lower-class woman in, or near, Vinci, Tuscany, Vinci, he was educated in Florence by the Italian painter and sculptor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Springer Science+Business Media
Springer Science+Business Media, commonly known as Springer, is a German multinational publishing company of books, e-books and peer-reviewed journals in science, humanities, technical and medical (STM) publishing. Originally founded in 1842 in Berlin, it expanded internationally in the 1960s, and through mergers in the 1990s and a sale to venture capitalists it fused with Wolters Kluwer and eventually became part of Springer Nature in 2015. Springer has major offices in Berlin, Heidelberg, Dordrecht, and New York City. History Julius Springer founded Springer-Verlag in Berlin in 1842 and his son Ferdinand Springer grew it from a small firm of 4 employees into Germany's then second largest academic publisher with 65 staff in 1872.Chronology ". Springer Science+Business Media. In 1964, Springer expanded its business internationally, o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Donald Routledge Hill
Donald Routledge Hill (6 August 1922 – 30 May 1994)D. A. King, “In Memoriam: Donald Routledge Hill (1922-1994)”, ''Arabic Sciences and Philosophy,'' Volume 5 / Issue 02 / September 1995, pp 297-302 was a British engineer and historian of science and technology best known for his translation of ''The Book of Knowledge of Ingenious Mechanical Devices'' of the Muslim engineer Ismail al-Jazari.Hill Donald(1993) Life and work Born in London, after secondary school Hill served in the British army, in the Royal Engineers from 1941 to 1946. Two years he served in the Eighth Army in North Africa until he was wounded in action in Italy. Back in England he studied Engineering at the London University, obtaining his engineering degree in 1949. In 1964 he obtained his M.Litt in Islamic History at the University of Durham, and in 1970 his PhD from the University of London. Late 1940s Hill started his career working for the Iraq Petroleum Company in Lebanon, Syria and Qatar. Back in En ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banu Musa
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Banu or BANU may refer to: * Banu (name) * Banu (Arabic), Arabic word for "the sons of" or "children of" * Banu (makeup artist), an Indian makeup artist * Banu Chichek, a character in the ''Book of Dede Korkut'' * Bulgarian Agrarian National Union, a political party Places * Banu, Iran (other), various places in Iran * Bannu or Banū City, in Khyber-Pakhtunkhwa, Pakistan * Banu, a village in the commune of Dumești, Iași, Romania * Banú, a village in County Wexford, Ireland See also * *Bangu (other) *Banhu, Chinese musical instrument *Bannu (other) * Banou, Burkina Faso *Bhanu (other) *Bianhu *Bonu (other) Benow or Bonu ( fa, بنو, link=no) may refer to various places in Iran: * Benow, Lamerd Benow ( fa, بنو) is a village in Kal Rural District, Eshkanan District, Lamerd County, Fars Province, Iran. At the 2006 census, its population was 23, in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Book Of Ingenious Devices
The ''Book of Ingenious Devices'' (Arabic: كتاب الحيل ''Kitab al-Hiyal'', Persian: كتاب ترفندها ''Ketab tarfandha'', literally: "The Book of Tricks") is a large illustrated work on mechanical devices, including automata, published in 850 by the three brothers of Persian descent, known as the Banu Musa (Ahmad, Muhammad and Hasan bin Musa ibn Shakir) working at the House of Wisdom (''Bayt al-Hikma'') in Baghdad, Iraq, under the Abbasid Caliphate. The book described about one hundred devices and how to use them. Overview The book was commissioned by the Abbasid Caliph of Baghdad, also made by Al-Jazari, Abu Jafar al-Ma'mun ibn Harun (786–833), who instructed the Banu Musa to acquire all of the Hellenistic texts that had been preserved by monasteries and by scholars during the decline and fall of Roman civilization. The Banū Mūsā brothers invented a number of automata (automatic machines) and mechanical devices, and they described a hundred such devices in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banū Mūsā Brothers
The three brothers Abū Jaʿfar, Muḥammad ibn Mūsā ibn Shākir (before 803 – February 873); Abū al‐Qāsim, Aḥmad ibn Mūsā ibn Shākir (d. 9th century) and Al-Ḥasan ibn Mūsā ibn Shākir (d. 9th century), known as the Banū Mūsā ( fa, بنوموسی, "Sons of or Moses"), were Persian scholars, who lived and worked in Baghdad. The Banū Mūsā, who are often not individually distinguishable in historical sources, worked as researchers in the House of Wisdom, and in astronomical observatories established in Baghdad by the Abbasid Caliph al-Ma'mun. They participated in an expedition to make geodesic measurements to determine the length of a degree of latitude. Their most notable work is the ''Book of Ingenious Devices'' on automata (automatic machines) and mechanical devices. They also produced the ''Book on the Measurement of Plane and Spherical Figures'', a work on geometry that was frequently quoted by both Islamic and European mathematicians. Biographical det ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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