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Kemondo Iron Age Sites
Kemondo Iron Age Sites or KM2 and KM3 are Early Iron Age complex industrial archaeological sites in Kemondo ward, Bukoba Rural District, Kagera Region, Tanzania, excavated by a team led by archaeologist Peter Schmid in the late 1970s and 1980s. The excavations aimed at better understanding the iron smelting process and its ritual aspects in East Africa. At the KM2 and KM3 sites, Schmidt tested the hypothesis that the high combustion temperature of furnaces, discovered to be between , was caused by the preheating of air blasts. Preheating has been suggested to be a distinct feature of African Early Iron Age smelting techniques by ethnographic observations of the Haya people of northwestern Tanzania. Description Locations KM2 site is located above Lake Victoria on a knoll west of the Kemondo Bay port facility. It was discovered in early 1977 by a Tanzanian member of Peter Schmidt's team as he walked over a newly exposed road surface that had been opened as part of the new K ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bukoba Rural District
Bukoba Rural District is one of the eight districts of the Kagera Region of Tanzania. It is bordered to the north by Missenyi District, to the east by Lake Victoria and Bukoba Urban District, to the south by Muleba District and to the west by Karagwe District. Its administrative seat is Bukoba town. According to the 2012 Tanzania National Census, the population of Bukoba Rural District was 289,697, from 394,020 in 2002, and 340,800 in 1988. The district area is , with a population density of There are 29 wards, 94 villages, and 515 suburbs in the district. Transport Paved trunk road T4 from Mwanza to the Ugandan border passes through Bukoba Rural District. Administrative subdivisions As of 2012, Bukoba Rural District was administratively divided into 29 wards Ward may refer to: Division or unit * Hospital ward, a hospital division, floor, or room set aside for a particular class or group of patients, for example the psychiatric ward * Prison ward, a division of a penal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron Ore
Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, or deep purple to rusty red. The iron is usually found in the form of magnetite (, 72.4% Fe), hematite (, 69.9% Fe), goethite (, 62.9% Fe), limonite (, 55% Fe) or siderite (, 48.2% Fe). Ores containing very high quantities of hematite or magnetite (greater than about 60% iron) are known as "natural ore" or "direct shipping ore", meaning they can be fed directly into iron-making blast furnaces. Iron ore is the raw material used to make pig iron, which is one of the main raw materials to make steel—98% of the mined iron ore is used to make steel. In 2011 the ''Financial Times'' quoted Christopher LaFemina, mining analyst at Barclays Capital, saying that iron ore is "more integral to the global economy than any other commodity, except perhaps oil". Sources Metallic iron is virtually unknown on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archaeological Sites In Tanzania
Archaeology or archeology is the scientific study of human activity through the recovery and analysis of material culture. The archaeological record consists of artifacts, architecture, biofacts or ecofacts, sites, and cultural landscapes. Archaeology can be considered both a social science and a branch of the humanities. It is usually considered an independent academic discipline, but may also be classified as part of anthropology (in North America – the four-field approach), history or geography. Archaeologists study human prehistory and history, from the development of the first stone tools at Lomekwi in East Africa 3.3 million years ago up until recent decades. Archaeology is distinct from palaeontology, which is the study of fossil remains. Archaeology is particularly important for learning about prehistoric societies, for which, by definition, there are no written records. Prehistory includes over 99% of the human past, from the Paleolithic until the advent of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1977 Archaeological Discoveries
Events January * January 8 – 1977 Moscow bombings, Three bombs explode in Moscow within 37 minutes, killing seven. The bombings are attributed to an Armenian separatist group. * January 10 – Mount Nyiragongo erupts in eastern Zaire (now the Democratic Republic of the Congo). * January 17 ** 49 marines from the and are killed as a result of a collision in Barcelona harbour, Spain. * January 18 ** Scientists identify a previously unknown Bacteria, bacterium as the cause of the mysterious Legionnaires' disease. ** Australia's worst Granville rail disaster, railway disaster at Granville, a suburb of Sydney, leaves 83 people dead. ** SFR Yugoslavia Prime minister Džemal Bijedić, his wife and 6 others are killed in a plane crash in Bosnia and Herzegovina. * January 19 – An Ejército del Aire CASA C-207 Azor, CASA C-207C Azor (registration T.7-15) plane crashes into the side of a mountain near Chiva, Valencia, Chiva, on approach to Valencia Airport in Spain, killing all ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
8th-century Disestablishments In Africa
The 8th century is the period from 701 ( DCCI) through 800 ( DCCC) in accordance with the Julian Calendar. The coast of North Africa and the Iberian Peninsula quickly came under Islamic Arab domination. The westward expansion of the Umayyad Empire was famously halted at the siege of Constantinople by the Byzantine Empire and the Battle of Tours by the Franks. The tide of Arab conquest came to an end in the middle of the 8th century.Roberts, J., ''History of the World'', Penguin, 1994. In Europe, late in the century, the Vikings, seafaring peoples from Scandinavia, begin raiding the coasts of Europe and the Mediterranean, and go on to found several important kingdoms. In Asia, the Pala Empire is founded in Bengal. The Tang dynasty reaches its pinnacle under Chinese Emperor Xuanzong. The Nara period begins in Japan. Events * Estimated century in which the poem Beowulf is composed. * Classical Maya civilization begins to decline. * The Kombumerri burial grounds are founded. * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
700s Disestablishments
7 (seven) is the natural number following 6 and preceding 8. It is the only prime number preceding a cube. As an early prime number in the series of positive integers, the number seven has greatly symbolic associations in religion, mythology, superstition and philosophy. The seven Classical planets resulted in seven being the number of days in a week. It is often considered lucky in Western culture and is often seen as highly symbolic. Unlike Western culture, in Vietnamese culture, the number seven is sometimes considered unlucky. It is the first natural number whose pronunciation contains more than one syllable. Evolution of the Arabic digit In the beginning, Indians wrote 7 more or less in one stroke as a curve that looks like an uppercase vertically inverted. The western Ghubar Arabs' main contribution was to make the longer line diagonal rather than straight, though they showed some tendencies to making the digit more rectilinear. The eastern Arabs developed the digit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3rd-century BC Establishments
The 3rd century was the period from 201 ( CCI) to 300 (CCC) Anno Domini (AD) or Common Era (CE) in the Julian calendar.. In this century, the Roman Empire saw a crisis, starting with the assassination of the Roman Emperor Severus Alexander in 235, plunging the empire into a period of economic troubles, barbarian incursions, political upheavals, civil wars, and the split of the Roman Empire through the Gallic Empire in the west and the Palmyrene Empire in the east, which all together threatened to destroy the Roman Empire in its entirety, but the reconquests of the seceded territories by Emperor Aurelian and the stabilization period under Emperor Diocletian due to the administrative strengthening of the empire caused an end to the crisis by 284. This crisis would also mark the beginning of Late Antiquity. In Persia, the Parthian Empire was succeeded by the Sassanid Empire in 224 after Ardashir I defeated and killed Artabanus V during the Battle of Hormozdgan. The Sassanids the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Historic Sites In Tanzania
National Historic Sites of Tanzania is an official list of places in Tanzania that have been designated as National Historic Sites as per the Ministry of Natural Resources and Tourism of Tanzania under the Antiquities Division. The list is not complete and is currently being updated. History The National Historical Sites was created by the colonial British Mandate in Tanganyika Territory in 1937 as the Monuments Preservation Ordinance of 1937. In 1957, it was handed over to the Ministry of Education as the Antiquities Division with the office based in Bagamoyo, Pwani Region. The Office was moved to Dar es Salaam in 1960. In 1964, four years after independence, the national assembly of Tanzania passed the Antiquities Act No.10 of 1964 replacing the Mounuments Preservation Ordinance of 1937. The 1964 Act was amended in 1979 by the Antiquities Act No.22 of 1979, then that was replaced by the Objects Monuments Act No.13 of 1981. List of National Historic Sites Below is the list of T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subsoil
Subsoil is the layer of soil under the topsoil on the surface of the ground. Like topsoil, it is composed of a variable mixture of small particles such as sand, silt and clay, but with a much lower percentage of organic matter and humus, and it has a small amount of rocks which are smaller in size mixed with it. The subsoil is also called B Horizon. Whereas the topsoil (alternatively called the A horizon) tends to be the site containing the greatest physical, chemical, and biological activity, the subsoil (or the B horizon) is the region of deposition where you can find iron oxide, clay particles, and small amounts of organic material reaching from the A horizon. It is also less weathered than the topsoil. Due to human activity, the topsoil and subsoil in many environments has been mixed together. Below the subsoil is the soil base (or C horizon). Clay-based subsoil has been the primary source of material for adobe, cob, rammed earth, wattle and daub, and other earthen constru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carburization
Carburising, carburizing (chiefly American English), or carburisation is a heat treatment process in which iron or steel absorbs carbon while the metal is heated in the presence of a carbon-bearing material, such as charcoal or carbon monoxide. The intent is to make the metal harder. Depending on the amount of time and temperature, the affected area can vary in carbon content. Longer carburizing times and higher temperatures typically increase the depth of carbon diffusion. When the iron or steel is cooled rapidly by quenching, the higher carbon content on the outer surface becomes hard due to the transformation from austenite to martensite, while the core remains soft and tough as a ferritic and/or pearlite microstructure.Oberg, E., Jones, F., and Ryffel, H. (1989) ''Machinery's Handbook 23rd Edition.'' New York: Industrial Press Inc. This manufacturing process can be characterized by the following key points: It is applied to low-carbon workpieces; workpieces are in contact wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swamp Grass
A swamp is a forested wetland.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p. Swamps are considered to be transition zones because both land and water play a role in creating this environment. Swamps vary in size and are located all around the world. The water of a swamp may be fresh water, brackish water, or seawater. Freshwater swamps form along large rivers or lakes where they are critically dependent upon rainwater and seasonal flooding to maintain natural water level fluctuations.Hughes, F.M.R. (ed.). 2003. The Flooded Forest: Guidance for policy makers and river managers in Europe on the restoration of floodplain forests. FLOBAR2, Department of Geography, University of Cambridge, Cambridge, UK. 96 p. Saltwater swamps are found along tropical and subtropical coastlines. Some swamps have hammocks, or dry-land protrusions, covered by aquatic vegetation, or vegetation that tolerates periodic inundati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Furnace Bowl
A furnace is a structure in which heat is produced with the help of combustion. Furnace may also refer to: Appliances Buildings * Furnace (central heating): a furnace , or a heater or boiler , used to generate heat for buildings * Boiler, used to heat water; also called a furnace in American English when used for heating and hot water in a building * Jetstream furnace or Tempest boiler, a design of wood-fired water heater Industry * Industrial furnace, a device used in industrial applications ** Glass melting furnace ** Muffle furnace or retort furnace ** Solar furnace ** Vacuum furnace * Metallurgical furnace, a device used to heat metal and metal ore ** Basic oxygen furnace ** Bessemer converter ** Blast furnace ** Bloomery ** Electric arc furnace ** Electric induction furnace ** Open hearth furnace ** Puddling furnace ** Reverberatory furnace Places United Kingdom * Furnace, Argyll, a village in Scotland * Furnace, Carmarthenshire, a village in Carmarthenshire, Wales * F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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