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Minimise the uptake of organisms during ballasting. Minimising the uptake of sediments during ballasting. Ballast water exchange while at sea (the ship should be minimum 200 nautical miles from shore with a depth of minimum 200 metres and can use the flow through or sequential method).
Cross section of a vessel with a single ballast tank at the bottom. Ballast is dense material used as a weight to provide stability to a vehicle or structure. Ballast, other than cargo, may be placed in a vehicle, often a ship or the gondola of a balloon or airship, to provide stability.
During World War II the main universities like University of Texas and Texas A&M University gained a new national role. The wartime financing of university research, curricular change, campus trainee programs, and postwar veteran enrollments changed the tenor and allowed Texas schools to gain national stature.
The first railroad built in Texas is called the Harrisburg Railroad and opened for business in 1853. [21] In 1854, the Texas and Red River telegraph services were the first telegraph offices to open in Texas. [21] The Texas cotton industry in 1859 increased production by seven times compared to 1849, as 58,073 bales increased to 431,645 bales. [22]
Industrial Workers of the World in Texas (2 P) L. Labor disputes in Texas (11 P) ... Pages in category "History of Texas" The following 113 pages are in this category ...
In addition, the Handbook of Texas Online is provided by the TSHA for historical internet research of Texas. The Southwestern Historical Quarterly (initially the Quarterly of the Texas State Historical Association) is the oldest continuously published scholarly journal in Texas. The journal features 16 articles per year, covering topics in a ...
Hurricane Carla, Texas' largest storm on record, struck the coast in 1961 causing substantial flooding and damage in Texas City and other communities. [45] Loss of life was minimal thanks to evacuation efforts. Expansion of the flood control dike and construction on the Texas City seawall occurred a result. The project was completed in 1985. [43]
As all history occurs in the natural world, environmental history tends to focus on particular time-scales, geographic regions, or key themes. It is also a strongly multidisciplinary subject that draws widely on both the humanities and natural science. The subject matter of environmental history can be divided into three main components. [2]