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Fishing In Chad
Lake Chad, with its two major rivers and many runoff zones, was ranked high among Africa's producers of inland freshwater fish in the 1970s. With the drought and diversion of the waters of some rivers, however, production declined in the 1980s. Traditionally, fish have been an important source of protein for those living along the rivers and lakes, and fishing was also a means of earning money. Because it was practiced in an entirely traditional manner and totally outside the control of government or modern commercial enterprises, there was no accurate statistical information on fishing. In the 1960s, 1970s, and 1980s, total production of fish was estimated at between 60,000 and 120,000 tons per year. But because these figures represent production for the Logone River and Lake Chad, which are shared with Cameroon, Niger, and Nigeria, Chad's fish production amounted to an estimated 70 percent of the total. The largest part of the catch—perhaps two-thirds—was consumed locally. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Fish
Freshwater fish are those that spend some or all of their lives in fresh water, such as rivers and lakes, with a salinity of less than 1.05%. These environments differ from marine conditions in many ways, especially the difference in levels of salinity. To survive fresh water, the fish need a range of physiology, physiological adaptations. 41.24% of all known species of fish are found in fresh water. This is primarily due to the rapid speciation that the scattered habitats make possible. When dealing with ponds and lakes, one might use the same basic models of speciation as when studying island biogeography. Physiology Freshwater fish differ physiologically from salt water fish in several respects. Their gills must be able to diffuse dissolved gases while keeping the salts in the body fluids inside. Their scales reduce water diffusion through the skin: freshwater fish that have lost too many scales will die. They also have well developed kidneys to reclaim salts from body flui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smoking (cooking)
Smoking is the process of flavoring, browning, cooking, or preserving food by exposing it to smoke from burning or smoldering material, most often wood. Meat, fish, and ''lapsang souchong'' tea are often smoked. In Europe, alder is the traditional smoking wood, but oak is more often used now, and beech to a lesser extent. In North America, hickory, mesquite, oak, pecan, alder, maple, and fruit-tree woods, such as apple, cherry, and plum, are commonly used for smoking. Other biomass besides wood can also be employed, sometimes with the addition of flavoring ingredients. Chinese tea-smoking uses a mixture of uncooked rice, sugar, and tea, heated at the base of a wok. Some North American ham and bacon makers smoke their products over burning corncobs. Peat is burned to dry and smoke the barley malt used to make Scotch whisky and some beers. In New Zealand, sawdust from the native manuka (tea tree) is commonly used for hot smoking fish. In Iceland, dried sheep dung is used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fishing By Country
This page lists the world fisheries' production. The tonnage from capture and aquaculture is listed by country. Fish, crustaceans, molluscs, etc. Following is a sortable table of the world fisheries' harvest for 2018. The tonnage from capture and aquaculture is listed by country. Capture includes fish, crustaceans, molluscs, etc. Aquatic plants Following is a sortable table of the world fisheries' harvest of aquatic plants for 2005. The tonnage from capture and aquaculture is listed by country. Countries whose total harvest was less than 100,000 tons are not included. See also * List of harvested aquatic animals by weight * Ocean fisheries * Outline of fishing * Population dynamics of fisheries * Wild fisheries * World fish production References * FAOFisheries and Aquaculture2005 statistics * FAO The Food and Agriculture Organization of the United Nations (FAO)french: link=no, Organisation des Nations unies pour l'alimentation et l'agriculture; it, Organizzazione ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Economy Of Chad
The economy of Chad suffers from the landlocked country's geographic remoteness, drought, lack of infrastructure, and political turmoil. About 85% of the population depends on agriculture, including the herding of livestock. Of Africa's Francophone countries, Chad benefited least from the 50% devaluation of their currencies in January 1994. Financial aid from the World Bank, the African Development Bank, and other sources is directed largely at the improvement of agriculture, especially livestock production. Because of lack of financing, the development of oil fields near Doba, originally due to finish in 2000, was delayed until 2003. It was finally developed and is now operated by ExxonMobil. In terms of gross domestic product, Chad ranks 143rd globally with $11.051 billion dollars as of 2018. Agriculture Chad produced in 2018: * 987 thousand tons of sorghum; * 893 thousand tons of peanut butter; * 756 thousand tons of millet; * 484 thousand tonnes of yam (8th largest produ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nylon
Nylon is a generic designation for a family of synthetic polymers composed of polyamides ( repeating units linked by amide links).The polyamides may be aliphatic or semi-aromatic. Nylon is a silk-like thermoplastic, generally made from petroleum, that can be melt-processed into fibers, films, or shapes. Nylon polymers can be mixed with a wide variety of additives to achieve many property variations. Nylon polymers have found significant commercial applications in fabric and fibers (apparel, flooring and rubber reinforcement), in shapes (molded parts for cars, electrical equipment, etc.), and in films (mostly for food packaging). History DuPont and the invention of nylon Researchers at DuPont began developing cellulose based fibers, culminating in the synthetic fiber rayon. DuPont's experience with rayon was an important precursor to its development and marketing of nylon. DuPont's invention of nylon spanned an eleven-year period, ranging from the initial research pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wildlife Management
Wildlife management is the management process influencing interactions among and between wildlife, its habitats and people to achieve predefined impacts. It attempts to balance the needs of wildlife with the needs of people using the best available science. Wildlife management can include wildlife conservation, gamekeeping and pest control. Wildlife management draws on disciplines such as mathematics, chemistry, biology, ecology, climatology and geography to gain the best results. Wildlife management aims to halt the loss in the Earth's biodiversity, by taking into consideration ecological principles such as carrying capacity, disturbance and succession, and environmental conditions such as physical geography, pedology and hydrology.Hunter, M. L. (1996). Fundamentals of Conservation Biology. Blackwell Science Inc., Cambridge, Massachusetts., .Groom, M.J., Meffe, G.K. and Carroll, C.R. (2006) Principles of Conservation Biology (3rd ed.). Sinauer Associates, Sunderland, MA. Most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maiduguri
Maiduguri is the capital and the largest city of Borno State Borno State is a state in the North-East geopolitical zone of Nigeria, bordered by Yobe to the west, Gombe to the southwest, and Adamawa to the south while its eastern border forms part of the national border with Cameroon, its northern border ... in north-eastern Nigeria. The city sits along the seasonal Ngadda River which disappears into the ''Firki'' swamps in the areas around Lake Chad. Maiduguri was founded in 1907 as a military outpost by the United Kingdom of Great Britain and Ireland, British and has since grown rapidly with a population exceeding a million by 2007. History Early period The region was home to the Kanem-Bornu Empire for centuries. Maiduguri actually consists of two cities: Yerwa to the West and Old Maiduguri to the east. Yerwa was founded in 1907 by Abubakar Garbai of Borno as the capital of the Bornu Kingdom. The location had before that been a small village known as Kalwa. This involved ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Market (place)
A marketplace or market place is a location where people regularly gather for the purchase and sale of provisions, livestock, and other goods. In different parts of the world, a marketplace may be described as a '' souk'' (from the Arabic), '' bazaar'' (from the Persian), a fixed '' mercado'' (Spanish), or itinerant ''tianguis'' (Mexico), or ''palengke'' (Philippines). Some markets operate daily and are said to be ''permanent'' markets while others are held once a week or on less frequent specified days such as festival days and are said to be ''periodic markets.'' The form that a market adopts depends on its locality's population, culture, ambient and geographic conditions. The term ''market'' covers many types of trading, as market squares, market halls and food halls, and their different varieties. Thus marketplaces can be both outdoors and indoors, and in the modern world, online marketplaces. Markets have existed for as long as humans have engaged in trade. The earlie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Food Preservation
Food preservation includes processes that make food more resistant to microorganism growth and slow the oxidation of fats. This slows down the decomposition and rancidification process. Food preservation may also include processes that inhibit visual deterioration, such as the enzymatic browning reaction in apples after they are cut during food preparation. By preserving food, food waste can be reduced, which is an important way to decrease production costs and increase the efficiency of food systems, improve food security and nutrition and contribute towards environmental sustainability. For instance, it can reduce the environmental impact of food production. Many processes designed to preserve food involve more than one food preservation method. Preserving fruit by turning it into jam, for example, involves boiling (to reduce the fruit's moisture content and to kill bacteria, etc.), sugaring (to prevent their re-growth) and sealing within an airtight jar (to prevent reconta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salting (food)
Salting is the preservation of food with dry edible salt."Historical Origins of Food Preservation." Accessed June 2011. |
Federal Research Division
The Federal Research Division (FRD) is the research and analysis unit of the United States Library of Congress. The Federal Research Division provides directed research and analysis on domestic and international subjects to agencies of the United States government, the District of Columbia, and authorized federal contractors. As expert users of the vast English and foreign-language collections of the Library of Congress, the Division's area and subject specialists employ the resources of the world's largest library and other information sources worldwide to produce impartial and comprehensive studies on a cost-recovery basis. The Federal Research Program is run by the Federal Research Division (FRD), the fee-for-service research and analysis unit within the Library of Congress. The Federal Research Program of the Library of Congress was authorized by the United States Congress in accordance with the Library of Congress Fiscal Operations Improvement Act of 2000 (2 U.S.C. 182c). FR ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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