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Mandraka Power Station
Mandraka Dam is a gravity dam on the Mandraka River near Mandraka in the Analamanga Region of Madagascar. The dam was constructed by a French firm by 1956 and creates Lake Mandraka. Mandraka Power Station The dam supplies water to a hydroelectric power station to the east, down in the valley. The change in elevation between the dam and power station affords a hydraulic head on . The dam and power station are operated and owned by Jirama and the four Pelton turbine-generators were commissioned between 1958 and 1972. Climatic condition of Mandraka Dam The expanded recurrence and force of environment related dangers (including Flood, floods, Dry season, dry seasons and Typhoon, typhoons) is undermining the vocations, wellbeing and prosperity of populaces living in the waterfront zones of Madagascar. Most neighborhood networks here live beneath the neediness line and depend intensely on Rain, downpour took care of agribusiness and beach front assets to help their jobs. The Ventur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rain
Rain is a form of precipitation where water drop (liquid), droplets that have condensation, condensed from Water vapor#In Earth's atmosphere, atmospheric water vapor fall under gravity. Rain is a major component of the water cycle and is responsible for depositing most of the fresh water on the Earth. It provides water for hydroelectricity, hydroelectric power plants, crop irrigation, and suitable conditions for many types of ecosystems. The major cause of rain production is moisture moving along three-dimensional zones of temperature and moisture contrasts known as weather fronts. If enough moisture and upward motion is present, precipitation falls from convection, convective clouds (those with strong upward vertical motion) such as cumulonimbus (thunder clouds) which can organize into narrow rainbands. In mountainous areas, heavy precipitation is possible where upslope flow is maximized within windward sides of the terrain at elevation which forces moist air to condense and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravity Dams
A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by using only the weight of the material and its resistance against the foundation. Gravity dams are designed so that each section of the dam is stable and independent of any other dam section. Characteristics Gravity dams generally require stiff rock foundations of high bearing strength (slightly weathered to fresh), although in rare cases, they have been built on soil. Stability of the dam primarily arises from the range of normal force angles viably generated by the foundation. Also, the stiff nature of a gravity dam structure endures differential foundation settlement poorly, as it can crack the dam structure. The main advantage to gravity dams over embankments is the scour-resistance of concrete, which protects against damage from minor over-topping flows. Unexpected large over-topping flows are still a problem, as they can scour dam foundations. A disadvantage of gravi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dams In Madagascar
A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect or store water which can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as dikes) are used to manage or prevent water flow into specific land regions. The word ''dam'' can be traced back to Middle English, and before that, from Middle Dutch, as seen in the names of many old cities, such as Amsterdam and Rotterdam. Ancient dams were built in Mesopotamia and the Middle East for water control. The earliest known dam is the Jawa Dam in Jordan, dating to 3,000 BC. Egyptians also built dams, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mantasoa Dam
Mantasoa Dam is a buttress dam on the Varahina-North River, a tributary of the Ikopa River, near Mantasoa in the Analamanga Region of Madagascar. The dam was constructed by French contractors between 1937 and 1938. It creates Lake Mantasoa which has a surface area of . The dam itself is made of of concrete and has a reinforced buttress design. Water released from the dam supplies a regulated flow to hydroelectric power station at the Antelomita Dams downstream. A saddle dam on the north side of the Mantosoa reservoir regulates water flow into the Mandraka River for the Mandraka Dam downstream. See also *Tsiazompaniry Dam The Tsiazompaniry Dam is a buttress dam on the Varahina-South River, a tributary of the Ikopa River, near Tsiazompaniry in the Analamanga Region of Madagascar. The dam was constructed by a French firm in 1956. It creates Lake Tsiazompaniry, the ... – on the Varahina South River References {{reflist Dams in Madagascar Analamanga Buttress dams Dams co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mantasoa
Mantasoa is a municipality in Madagascar. It belongs to the district of Manjakandriana, which is a part of Analamanga Region. The population of the municipality was 10,604 in 2018. Mantasoa is located at 68 km East of Antananarivo. 60 villages in 11 Fokontany (localities) belong to this municipality. Education There are 20 schools in Mantasoa: 14 primary schools and 6 secondary schools. Economy The majority 95.5% of the population of the commune are farmers, while an additional 0.5% receives their livelihood from raising livestock. The most important crop is rice, while other important products are beans, cassava and sweet potatoes. Services provide employment for 3% of the population. Additionally fishing employs 1% of the population. 20,05 km2 (18,9%) of the surface of this municipality is occupied by the Lake Mantasoa. 9 km2 is agriculture land, 3,1 km2 by rice and 5,71 km2 of other plantations (Tanety). West of the lake is private land with Eucalyptus and Pinus plantations ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ikopa River
The Ikopa River is the second longest waterway in Madagascar and passes through the capital, Antananarivo. It is the largest tributary of the Betsiboka River. It is formed by the Varahina-North and Varahina-South Rivers. Its spring, named Varahina, is found in the sub-prefecture of Andramasina at an altitude of 1810 meters. On this river is situated one of the largest hydro-electrical power stations of Madagascar: the Antelomita Hydroelectric Power Station The Antelomita Hydroelectric Power Station is located in the rural commune Anjeva Gara of the Analamanga Region, Madagascar. The Hydroelectricity, hydroelectric power station comprises two parts, Antelomita I and II. Both are adjacent to one anoth .... References Rivers of Madagascar Rivers of Analamanga {{Madagascar-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turquoise
Turquoise is an opaque, blue-to-green mineral that is a hydrous phosphate of copper and aluminium, with the chemical formula . It is rare and valuable in finer grades and has been prized as a gemstone for millennia due to its hue. The robin egg blue or sky blue color of the Persian turquoise mined near the modern city of Nishapur, Iran, has been used as a guiding reference for evaluating turquoise quality. Like most other opaque gems, turquoise has been devalued by the introduction of treatments, imitations, and synthetics into the market. Names The word ''turquoise'' dates to the 17th century and is derived from the Old French ''turquois'' meaning "Turkish" because the mineral was first brought to Europe through the Ottoman Empire.Turquoise . minerals.usgs.gov However, according to [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Analamanga
Analamanga is a region in central Madagascar, containing the capital Antananarivo and its surrounding metropolitan area. The region has an area of , and had a population of 4,325,226 in 2018. Administrative divisions Analamanga Region is divided into eight districts, which are sub-divided into 140 communes. * Ambohidratrimo District - 24 communes * Andramasina District - 14 communes * Anjozorobe District - 18 communes * Ankazobe District - 15 communes * Antananarivo-Atsimondrano District - 26 communes * Antananarivo-Avaradrano District - 16 communes * Antananarivo-Renivohitra District - 1 commune; the city of Antananarivo * Manjakandriana District - 23 communes Geography The region extends mainly towards the north of the capital. It is bordered by Betsiboka to the north, Bongolava and Itasy to the west, Alaotra Mangoro to the east, and Vakinankaratra to the south. Rivers The main rivers are the Betsiboka River and the Ikopa River. Major lakes Lake Mantasoa (1375 ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venture Capital
Venture capital (VC) is a form of private equity financing provided by firms or funds to start-up company, startup, early-stage, and emerging companies, that have been deemed to have high growth potential or that have demonstrated high growth in terms of number of employees, annual revenue, scale of operations, etc. Venture capital firms or funds invest in these early-stage companies in exchange for Equity (finance), equity, or an ownership stake. Venture capitalists take on the risk of financing start-ups in the hopes that some of the companies they support will become successful. Because Startup company, startups face high uncertainty, VC investments have high rates of failure. Start-ups are usually based on an innovation, innovative technology or business model and often come from high technology industries such as information technology (IT) or biotechnology. Pre-seed and seed money, seed rounds are the initial stages of funding for a startup company, typically occurring earl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beach
A beach is a landform alongside a body of water which consists of loose particles. The particles composing a beach are typically made from Rock (geology), rock, such as sand, gravel, shingle beach, shingle, pebbles, etc., or biological sources, such as mollusc shells or coralline algae. Sediments settle in different densities and structures, depending on the local wave action and weather, creating different textures, colors and gradients or layers of material. Though some beaches form on inland freshwater locations such as lakes and rivers, most beaches are in coastal areas where wind wave, wave or Ocean current, current action deposition (geology), deposits and reworks sediments. Coastal erosion, Erosion and changing of beach geologies happens through natural processes, like wave action and Extreme weather, extreme weather events. Where wind conditions are correct, beaches can be backed by coastal dunes which offer protection and regeneration for the beach. However, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agribusiness
Agribusiness is the industry, enterprises, and the field of study of value chains in agriculture and in the bio-economy, in which case it is also called bio-business or bio-enterprise. The primary goal of agribusiness is to maximize profit while satisfying the needs of consumers for products related to natural resources. Agribusinesses comprise farms, food and fiber processing, forestry, fisheries, biotechnology and biofuel enterprises and their input suppliers. Studies of business growth and performance in farming have found that successful agricultural businesses are cost-efficient internally and operate in favourable economic, political, and physical- organic environments. They are able to expand and make profits, improve the productivity of land, labor, and capital, and keep their costs down to ensure market price competitiveness. Agribusiness is not limited to farming. It encompasses a broader spectrum through the agribusiness system which includes input supplies, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
