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Mersa Fatma–Colulli Railway
The Eritrean Railway is the only railway system in Eritrea. It was constructed between 1887 and 1932 during the Italian Eritrea colony and connects the port of Massawa with Asmara. Originally it also connected to Bishia. The line was partly damaged by warfare in subsequent decades, but was rebuilt in the 1990s. Vintage equipment is still used on the line. Main railway line Characteristics The railway was built during Italian Eritrea in order to connect Massawa and Asmara, the main cities of Eritrea. In the 1930s Italian leader Benito Mussolini wanted to reach Kassala in Sudan, but his war to conquer Ethiopia and create the Italian Empire stopped the enlargement to Agordat and Bishia. After damage suffered by the railway during World War II, the section between Massawa and Asmara was dismantled partially and was only rebuilt in the 1990s by the Eritrean authorities. The railway is narrow gauge and is being rebuilt after the devastation wreaked upon it by the war of ind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rete Ferroviaria Eritrea Italiana (RFI), an Italian company, owner of Italy's railway network
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Rete may refer to: *Net (device), in Latin *The Network ( it, La Rete), a former Italian political party *Rete algorithm, an efficient pattern matching algorithm for implementing production rule systems *Part of an astrolabe, a historical astronomical instrument *Net-like anatomic structures: Rete canalis hypoglossi, Rete carpale dorsale, Rete mirabile, Rete ovarii, Rete patellare, Rete pegs and ridges, Rete testes, Rete venosum. See also *Plexus *Rete Ferroviaria Italiana Rete Ferroviaria Italiana (RFI) is the Italian railway infrastructure manager, subsidiary of Ferrovie dello Stato (FS), a state-owned holding company. RFI is the owner of Italy's railway network, it provides signalling, maintenance and other ser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mallet Locomotive
The Mallet locomotive is a type of articulated steam railway locomotive, invented by the Swiss engineer Anatole Mallet (1837–1919). The front of the locomotive articulated on a bogie. The compound steam system fed steam at boiler pressure to high-pressure cylinders driving the rear set of driving wheels (rigidly connected to the boiler). The exhaust steam from these cylinders was fed into a low-pressure receiver and was then sent to low-pressure cylinders that powered the driving wheels on the swiveling bogie towards the front of locomotive. Compounding Steam under pressure is converted into mechanical energy more efficiently if it is used in a compound engine; in such an engine steam from a boiler is used in high-pressure (HP) cylinders and then under reduced pressure in a second set of cylinders. The lower-pressure steam occupies a larger volume and the low-pressure (LP) cylinders are larger than the high-pressure cylinders. A third stage (triple expansion) may be empl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grade (slope)
The grade (also called slope, incline, gradient, mainfall, pitch or rise) of a physical feature, landform or constructed line refers to the tangent of the angle of that surface to the horizontal. It is a special case of the slope, where zero indicates horizontality. A larger number indicates higher or steeper degree of "tilt". Often slope is calculated as a ratio of "rise" to "run", or as a fraction ("rise over run") in which ''run'' is the horizontal distance (not the distance along the slope) and ''rise'' is the vertical distance. Slopes of existing physical features such as canyons and hillsides, stream and river banks and beds are often described as grades, but typically grades are used for human-made surfaces such as roads, landscape grading, roof pitches, railroads, aqueducts, and pedestrian or bicycle routes. The grade may refer to the longitudinal slope or the perpendicular cross slope. Nomenclature There are several ways to express slope: # as an ''angle'' of inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Obel River
The Obel River (or Ubel River) is a right tributary of the Mareb (Gash) river. Лист карты D-37-IX. Масштаб: 1 : 200 000. Издание 1978 г. The latter watercourse forms part of the border between Eritrea and Ethiopia, with its headwaters in the Eritrean Highlands. According Ministry of Information of Eritrea, around Obel River's banks there are big farms where fruits and vegetables are grown. See also *List of rivers of Eritrea This is a list of streams and rivers in Eritrea, arranged geographically by drainage basin. Generally, rivers in Eritrea are divided into three groups: those that drain into Sudan, towards the Red Sea and towards the Afar Depression. There is ... References Rivers of Eritrea Rivers of Ethiopia International rivers of Africa Eritrea–Ethiopia border Border rivers {{Ethiopia-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second Italo-Abyssinian War
The Second Italo-Ethiopian War, also referred to as the Second Italo-Abyssinian War, was a war of aggression which was fought between Italy and Ethiopia from October 1935 to February 1937. In Ethiopia it is often referred to simply as the Italian Invasion ( am, ጣልያን ወረራ), and in Italy as the Ethiopian War ( it, Guerra d'Etiopia). It is seen as an example of the expansionist policy that characterized the Axis powers and the ineffectiveness of the League of Nations before the outbreak of the Second World War. On 3 October 1935, two hundred thousand soldiers of the Italian Army commanded by Marshal Emilio De Bono attacked from Eritrea (then an Italian colonial possession) without prior declaration of war. At the same time a minor force under General Rodolfo Graziani attacked from Italian Somalia. On 6 October, Adwa was conquered, a symbolic place for the Italian army because of the defeat at the Battle of Adwa by the Ethiopian army during the First Italo-Ethiopian Wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sudan Railways
Sudan has 4,725 kilometers of narrow-gauge, single-track railways. The main line runs from Wadi Halfa on the Egyptian border to Khartoum and southwest to El-Obeid via Sannar and Kosti, Sudan, with extensions to Nyala in Southern Darfur and Wau in Western Bahr al Ghazal, South Sudan. Other lines connect Atbarah and Sannar with Port Sudan, and Sannar with Ad Damazin. A 1,400-kilometer line serves the al Gezira cotton-growing region. There are plans to rehabilitate rail transport to reverse decades of neglect and declining efficiency. Service on some lines may be interrupted during the rainy season. Statistics Total route length: 5,063 km * gauge: 4,347 km * gauge plantation lines: 716 km Note: the main line linking Khartoum to Port Sudan carries over two-thirds of Sudan's rail traffic Sudan Railways The main system, Sudan Railways, which was operated by the government-owned Sudan Railways Corporation (SRC), provided services to most of the country's production ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keren, Eritrea
Keren (Tigrinya and Tigre: ), historically known as Sanhit,Shinn, David & al. "Hewitt Treaty" in the ''Historical Dictionary of Ethiopia''p. 214 is the second-largest city in Eritrea. It is situated around northwest of Asmara at an elevation of above sea-level. The city sprawls on a wide basin surrounded by granitic mountains on all sides. It serves as the capital of the Anseba Region, and is home to a number of ethnic groups including the Bilen people, Tigre people and Tigrinya people. History Keren grew around the Eritrean Railway to Asmara. The railway was later dismantled because of the war, although there are plans to rebuild it. It is an important commercial centre and was the scene of regular battles in both World War II and the Eritrean War of Independence. Keren was the site of a key battle between Italian and British troops in February – March 1941. Demographics As of 2016, Keren has a population of around 120,000 inhabitants. Residents belong to v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Littorina Eritrea
''Littorina'' is a genus of small sea snails, marine gastropod molluscs in the family Littorinidae, the winkles or periwinkles.WoRMS (2011). Littorina Férussac, 1822. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=138135 on 2011-04-15 These small snails live in the tidal zone of rocky shores. Overview In Europe there are about nine species in this genus, one of which is the rough periwinkle, ''Littorina saxatilis'' (Olivi, 1792). Another closely related (supposed) species ''Littorina tenebrosa'' (Montagu 1802) was thought to be distinct because of its different ecological requirements, but current studies have shown that it is not at all clear whether the two are indeed separate species or whether ''L. tenebrosa'' is perhaps merely an ecotype (an ecological form) of ''L. saxatilis''.Gosling, E.M. (2002). ''The periwinkle as a model in biodiversity studies: a geneticist's view.'' in Marine Biodiversity in Ireland and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railroad Tie
A railroad tie, crosstie (American English), railway tie (Canadian English) or railway sleeper (Australian and British English) is a rectangular support for the rails in railroad tracks. Generally laid perpendicular to the rails, ties transfer loads to the track ballast and subgrade, hold the rails upright and keep them spaced to the correct gauge. Railroad ties are traditionally made of wood, but prestressed concrete is now also widely used, especially in Europe and Asia. Steel ties are common on secondary lines in the UK; plastic composite ties are also employed, although far less than wood or concrete. As of January 2008, the approximate market share in North America for traditional and wood ties was 91.5%, the remainder being concrete, steel, azobé (red ironwood) and plastic composite. Tie spacing may depend on the type of tie, traffic loads and other requirements, for example 2640 concrete ties per mile on North American mainline railroads to 2112 timber ties per mile ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rail Gauge
In rail transport, track gauge (in American English, alternatively track gage) is the distance between the two rails of a railway track. All vehicles on a rail network must have wheelsets that are compatible with the track gauge. Since many different track gauges exist worldwide, gauge differences often present a barrier to wider operation on railway networks. The term derives from the metal bar, or gauge, that is used to ensure the distance between the rails is correct. Railways also deploy two other gauges to ensure compliance with a required standard. A ''loading gauge'' is a two-dimensional profile that encompasses a cross-section of the track, a rail vehicle and a maximum-sized load: all rail vehicles and their loads must be contained in the corresponding envelope. A ''structure gauge'' specifies the outline into which structures (bridges, platforms, lineside equipment etc.) must not encroach. Uses of the term The most common use of the term "track gauge" refers to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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