Sea

A sea is a large body of salt water that is surrounded in whole or in part by land. More broadly, "the sea" is the interconnected system of Earth's salty, oceanic waters—considered as one global ocean or as several principal oceanic divisions. The sea moderates Earth's climate and has important roles in the water cycle, carbon cycle, and nitrogen cycle. Although the sea has been travelled and explored since prehistory, the modern scientific study of the sea—oceanography—dates broadly to the British Challenger expedition of the 1870s. The sea is conventionally divided into up to five large oceanic sections—including the IHO's four named oceans (the Atlantic, Pacific, Indian, and Arctic) and the Southern Ocean; smaller, second-order sections, such as the Mediterranean, are known as seas.

Owing to the present state of continental drift, the Northern Hemisphere is now fairly equally divided between land and sea (a ratio of about 2:3) but the South is overwhelmingly oceanic (1:4.7).Salinity in the open ocean is generally in a narrow band around 3.5% by mass, although this can vary in more landlocked waters, near the mouths of large rivers, or at great depths. About 85% of the solids in the open sea are sodium chloride. Deep-sea currents are produced by differences in salinity and temperature. Surface currents are formed by the friction of waves produced by the wind and by tides, the changes in local sea level produced by the gravity of the Moon and Sun. The direction of all of these is governed by surface and submarine land masses and by the rotation of the Earth (the Coriolis effect).

Weld

Weld may refer to:

See also

Hyperbaric welding

Hyperbaric welding is the process of welding at elevated pressures, normally underwater. Hyperbaric welding can either take place wet in the water itself or dry inside a specially constructed positive pressure enclosure and hence a dry environment. It is predominantly referred to as "hyperbaric welding" when used in a dry environment, and "underwater welding" when in a wet environment. The applications of hyperbaric welding are diverse—it is often used to repair ships, offshore oil platforms, and pipelines. Steel is the most common material welded.

Dry hyperbaric welding is used in preference to wet underwater welding when high quality welds are required because of the increased control over conditions which can be exerted, such as through application of prior and post weld heat treatments. This improved environmental control leads directly to improved process performance and a generally much higher quality weld than a comparative wet weld. Thus, when a very high quality weld is required, dry hyperbaric welding is normally utilized. Research into using dry hyperbaric welding at depths of up to 1,000 metres (3,300 ft) is ongoing. In general, assuring the integrity of underwater welds can be difficult (but is possible using various nondestructive testing applications), especially for wet underwater welds, because defects are difficult to detect if the defects are beneath the surface of the weld.

Kevin Costner

Kevin Michael Costner (born January 18, 1955) is an American actor, film director, producer, musician, and singer. He has won two Academy Awards, three Golden Globe Awards, and one Emmy Award, and has been nominated for three BAFTA (British Academy of Film and Television Arts) Awards. In 2013, he was awarded the Honorary César.

Costner's notable roles include Eliot Ness in The Untouchables, Crash Davis in Bull Durham, Ray Kinsella in Field of Dreams, Lt. John J. Dunbar in Dances with Wolves, Jim Garrison in JFK, Robin Hood in Robin Hood: Prince of Thieves, Frank Farmer in The Bodyguard. Less well-liked were the science fiction-post-apocalyptic epics Waterworld (1995) and The Postman (1997), the latter with Costner starring, directing and producing.

He won the Primetime Emmy Award for Outstanding Lead Actor in a Miniseries or a Movie, the Golden Globe Award for Best Actor – Miniseries or Television Film, and the Screen Actors Guild Award for Outstanding Performance by a Male Actor in a Miniseries or Television Movie for his role as Devil Anse Hatfield in Hatfields & McCoys (2012) and starred in and produced Black or White (2014).

Ivory Coast

Coordinates: 8°N 5°W / 8°N 5°W / 8; -5

Ivory Coast (ⁱ/ˌaɪvəri ˈkoʊst/) or Côte d'Ivoire (/ˌkoʊt dᵻˈvwɑːr/;KOHT dee-VWAHR; French: [kot divwaʁ]), officially the Republic of Côte d'Ivoire (French: République de Côte d'Ivoire), is a country in West Africa. Ivory Coast's political capital is Yamoussoukro, and its economic capital and largest city is the port city of Abidjan.

Prior to its colonization by Europeans, Ivory Coast was home to several states, including Gyaaman, the Kong Empire, and Baoulé. Two Anyi kingdoms, Indénié and Sanwi, attempted to retain their separate identity through the French colonial period and after independence. Ivory Coast became a protectorate of France in 1843–44 and was later formed into a French colony in 1893 amid the European scramble for Africa. Ivory Coast achieved independence in 1960, led by Félix Houphouët-Boigny, who ruled the country until 1993. It maintained close political and economic association with its West African neighbors while at the same time maintaining close ties to the West, especially France. Since the end of Houphouët-Boigny's rule in 1993, Ivory Coast has experienced one coup d'état, in 1999, and two religion-grounded civil wars. The first took place between 2002 and 2007 and the second during 2010-2011.