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Water Wells
A well is an excavation or structure created on the earth by digging, driving, or drilling to access liquid resources, usually water. The oldest and most common kind of well is a water well, to access groundwater in underground aquifers. The well water is drawn up by a pump, or using containers, such as buckets that are raised mechanically or by hand. Water can also be Aquifer storage and recovery, injected back into the aquifer through the well. Wells were first constructed at least eight thousand years ago and historically vary in construction from a sediment of a dry watercourse to the qanats of Iran, and the stepwells and Sakia, sakiehs of India. Placing a lining in the well shaft helps create stability, and linings of wood or Wicker, wickerwork date back at least as far as the Iron Age. Wells have traditionally been sunk by hand digging, as is still the case in rural areas of the developing world. These wells are inexpensive and low-tech as they use mostly manual labour, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caisson (engineering)
In geotechnical engineering, a caisson (; borrowed , , an augmentative of ) is a watertight retaining structure. It is used, for example, to work on the foundation (architecture), foundations of a bridge pier (architecture), pier, for the construction of a concrete dam, or for the repair of ships. Caissons are constructed in such a way that the water can be pumped out, keeping the work environment dry. When piers are being built using an open caisson, and it is not practical to reach suitable soil, Deep foundation, friction pilings may be driven to form a suitable sub-foundation. These piles are connected by a foundation pad upon which the column pier is erected. Caisson engineering has been used since at least the 19th century, with three prominent examples being the Royal Albert Bridge (completed in 1859), the Eads Bridge (completed in 1874), and the Brooklyn Bridge (completed in 1883). Types To install a caisson in place, it is brought down through soft mud until a suitable ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haifa
Haifa ( ; , ; ) is the List of cities in Israel, third-largest city in Israel—after Jerusalem and Tel Aviv—with a population of in . The city of Haifa forms part of the Haifa metropolitan area, the third-most populous metropolitan area in Israel. It is home to the Baháʼí Faith's Baháʼí World Centre, and is a UNESCO World Heritage Site and a destination for Baháʼí pilgrimage. Built on the slopes of Mount Carmel, the settlement has a history spanning more than 3,000 years. The earliest known settlement in the vicinity was Tell Abu Hawam, a small port city established in the Late Bronze Age (14th century BCE).Encyclopaedia Judaica, Encyclopedia Judaica, ''Haifa'', Keter Publishing, Jerusalem, 1972, vol. 7, pp. 1134–1139 In the 3rd century CE, Haifa was known as a Tool and die maker, dye-making center. Over the millennia, the Haifa area has changed hands: being conquered and ruled by the Canaanites, History of ancient Israel and Judah, Israelites, Phoenicians, Assy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlit Yam
Atlit Yam (Hebrew language, Hebrew: עתלית ים) is a submerged Pre-Pottery Neolithic, Pre Pottery Neolithic C (PPNC) archaeological site located 300–400 meters off the coast of Atlit (modern town), Atlit, Israel. Dating from the late 7th to the early 6th millennia BCE, Atlit Yam provides the earliest known evidence for a community relying on pastoralism, agriculture, and fishing as Subsistence agriculture, subsistence systems on the Levantine coast. As of 2004, it is the only marine archaeological site in the Mediterranean to contain ''in situ'' human burials. Location Atlit Yam once sat on a coastal peninsula in close vicinity to the Oren River as well as several fresh water springs. The beginning of the Holocene saw a Sea level rise, rise in sea levels which left the site completely submerged by approximately 7000 BP. The contemporary coastline is assumed to have been about 1km west of the present coast. It is currently 8–12 m (25–40ft) beneath sea level in the Medite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyprus
Cyprus (), officially the Republic of Cyprus, is an island country in the eastern Mediterranean Sea. Situated in West Asia, its cultural identity and geopolitical orientation are overwhelmingly Southeast European. Cyprus is the List of islands in the Mediterranean, third largest and third most populous island in the Mediterranean, after Sicily and Sardinia. It is located southeast of Greece, south of Turkey, west of Syria and Lebanon, northwest of Israel and Palestine, and north of Egypt. Its capital and largest city is Nicosia. Cyprus hosts the British Overseas Territories, British military bases Akrotiri and Dhekelia, whilst the northeast portion of the island is ''de facto'' governed by the self-declared Northern Cyprus, Turkish Republic of Northern Cyprus, which is separated from the Republic of Cyprus by the United Nations Buffer Zone in Cyprus, United Nations Buffer Zone. Cyprus was first settled by hunter-gatherers around 13,000 years ago, with farming communities em ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Cyprus
The Prehistoric Period is the oldest part of History of Cyprus, Cypriot history. This article covers the period 11,000 to 800 BC and ends immediately before the documented history of Cyprus begins. Paleolithic Prior to the arrival of humans in Cyprus, only four terrestrial mammal species were present on the islands, including the Cypriot pygmy hippopotamus and the Cyprus dwarf elephant, which were much smaller than their mainland ancestors as a result of insular dwarfism. The ancestors of these species arrived on Cyprus at least 200,000 years ago, with the other species being the genet ''Genetta plesictoides'' and the still living Cypriot mouse. The earliest humans to inhabit Cyprus were hunter gatherers who arrived on the island around 13–12,000 years ago (11–10,000 BC), with some of the oldest well-dated sites being Aetokremnos on the south coast, which is suggested to show evidence of hunting of the dwarf hippopotamus and dwarf elephant, and the inland site of Roudias i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Mediterranean
The Eastern Mediterranean is a loosely delimited region comprising the easternmost portion of the Mediterranean Sea, and well as the adjoining land—often defined as the countries around the Levantine Sea. It includes the southern half of Turkey's main region, Anatolia; its smaller Hatay Province; the island of Cyprus; the Greek Dodecanese islands; and the countries of Egypt, Israel, Jordan, State of Palestine, Palestine, Syria and Lebanon. Its broadest uses can encompass the Libyan Sea (thus Libya), the Aegean Sea (thus East Thrace, European Turkey and the mainland and islands of Greece), and the Ionian Sea (thus southern Albania in Southeast Europe) and can extend west to Italy's farthest south-eastern coasts. Jordan is climatically and economically part of the region. Regions The eastern Mediterranean region is commonly interpreted in two ways: *The Levant, including its historically tied neighboring countries, Balkans and islands of Greece. *The Syria (region), region of Sy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neolithic
The Neolithic or New Stone Age (from Ancient Greek, Greek 'new' and 'stone') is an archaeological period, the final division of the Stone Age in Mesopotamia, Asia, Europe and Africa (c. 10,000 BCE to c. 2,000 BCE). It saw the Neolithic Revolution, a wide-ranging set of developments that appear to have arisen independently in several parts of the world. This "Neolithic package" included the History of agriculture, introduction of farming, domestication of animals, and change from a hunter-gatherer lifestyle to one of sedentism, settlement. The term 'Neolithic' was coined by John Lubbock, 1st Baron Avebury, Sir John Lubbock in 1865 as a refinement of the three-age system. The Neolithic began about 12,000 years ago, when farming appeared in the Epipalaeolithic Near East and Mesopotamia, and later in other parts of the world. It lasted in the Near East until the transitional period of the Chalcolithic (Copper Age) from about 6,500 years ago (4500 BCE), marked by the development ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Methane
Methane ( , ) is a chemical compound with the chemical formula (one carbon atom bonded to four hydrogen atoms). It is a group-14 hydride, the simplest alkane, and the main constituent of natural gas. The abundance of methane on Earth makes it an economically attractive fuel, although capturing and storing it is difficult because it is a gas at standard temperature and pressure. In the Earth's atmosphere methane is transparent to visible light but absorbs infrared radiation, acting as a greenhouse gas. Methane is an Organic chemistry, organic Organic compound, compound, and among the simplest of organic compounds. Methane is also a hydrocarbon. Naturally occurring methane is found both below ground and under the seafloor and is formed by both geological and biological processes. The largest reservoir of methane is under the seafloor in the form of methane clathrates. When methane reaches the surface and the Atmosphere of Earth, atmosphere, it is known as atmospheric methane. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soil Salinity
Soil salinity is the salt (chemistry), salt content in the soil; the process of increasing the salt content is known as salinization (also called salination in American and British English spelling differences, American English). Salts occur naturally within soils and water. Salinization can be caused by natural processes such as mineral weathering or by the gradual withdrawal of an ocean. It can also come about through artificial processes such as irrigation and Sodium_chloride#Road_salt, road salt. Natural occurrence Salt (chemistry), Salts are a natural component in soils and water. The ions responsible for salinization are: Sodium, Na+, Potassium, K+, Calcium, Ca2+, Magnesium, Mg2+ and Chlorine, Cl−. Over long periods of time, as soil minerals weathering, weather and release salts, these salts are flushed or leached out of the soil by drainage water in areas with sufficient precipitation. In addition to mineral weathering, salts are also deposited via dust and precipitatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Treatment
Water treatment is any process that improves the quality of water to make it appropriate for a specific end-use. The end use may be drinking, industrial water supply, irrigation, river flow maintenance, water recreation or many other uses, including being safely returned to the environment. Water treatment removes contaminants and undesirable components, or reduces their concentration so that the water becomes fit for its desired end-use. This treatment is crucial to human health and allows humans to benefit from both drinking and irrigation use. Types Drinking water treatment Water contamination is primarily caused by the discharge of untreated wastewater from enterprises. The effluent from various enterprises, which contains varying levels of contaminants, is dumped into rivers or other water resources. The wastewater may have a high proportion of organic and inorganic contaminants at the initial discharge. Industries generate wastewater as a result of fabrica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
