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Ganquan County
Ganquan County () is a county in the north of Shaanxi province, China. It is under the administration of the prefecture-level city of Yan'an. The county has an area of , and a population of 77,800 as of 2012. Administrative divisions The county is divided into 1 subdistrict, 3 towns, and 2 townships. The county's administrative offices are located in its sole subdistrict, . The county's three towns are , , and . The county's two townships are and . Geography The county is located in the hilly Loess Plateau in Northern Shaanxi. Climate The county has an average annual temperature of , and an average annual precipitation of . Economy In 2013, Ganquan County reported a GDP of 2.13 billion Renminbi, which had fallen 2.058 billion by 2016 due to decreased oil production. Despite this, the county's residents experienced an increase in average annual disposable income during this time, with urban residents' income rising from 25,835 Renminbi to 29,419, and agrarian residents' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
County (People's Republic Of China)
Counties ( zh, t=縣, s=县, hp=Xiàn), formally county-level divisions, are found in the third level of the administrative hierarchy in Provinces and Autonomous regions and the second level in municipalities and Hainan, a level that is known as "county level" and also contains autonomous counties, county-level cities, banners, autonomous banners and City districts. There are 1,355 counties in Mainland China out of a total of 2,851 county-level divisions. The term ''xian'' is sometimes translated as "district" or "prefecture" when put in the context of Chinese history. History ''Xian'' have existed since the Warring States period and were set up nationwide by the Qin Dynasty. The number of counties in China proper gradually increased from dynasty to dynasty. As Qin Shi Huang reorganized the counties after his unification, there were about 1,000. Under the Eastern Han Dynasty, the number of counties increased to above 1,000. About 1400 existed when the Sui dynasty abolish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Shaanxi
Shaanbei () or Northern Shaanxi is the portion of China's Shaanxi province north of the Huanglong Mountain and the Meridian Ridge (the so-called " Guanzhong north mountains"), and is both a geographic as well as a cultural area. It makes up the southeastern portion of the Ordos Basin and forms the northern part of the Loess Plateau. The region includes two prefectural cities of Yulin, which is known for the Ming Great Wall traversing through its northern part; and Yan'an, which is known as the birthplace of the Chinese Communist Revolution. Geography Shaanbei is located in the northern edge of the Loess Plateau with a general elevation range of , occupying approximately 45% of the total area of Shaanxi. Elevation tends to increase from northwest to southeast. The northern portions degrade into the Ordos Desert, while the southern portions slope up into hills. Shaanbei is generally perceived to include all of Yulin and the northern half of Yan'an prefectures, while the mou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
G65 Baotou–Maoming Expressway
The Baotou–Maoming Expressway (), designated as G65 and commonly referred to as the Baomao Expressway () is an expressway that connects the cities of Baotou, Inner Mongolia, China, and Maoming, Guangdong. When fully complete, it will be in length. Currently, many sections of the expressway are still under construction. The sections of the expressways that are complete are: * From Baotou to the Shaanxi border in Inner Mongolia * From the Inner Mongolia border to Ankang in Shaanxi * From Dazhou in Sichuan to Chongqing * From Guilin to Cenxi in Guangxi Route The route passes through the following cities: Baotou, Ordos, Yulin, Yan'an, Tongchuan, Xi'an, Ankang, Dazhou, Chongqing, Qianjiang, Jishou, Huaihua, Guilin, Wuzhou, Maoming Due to the challenging terrain the expressway includes numerous tunnels and bridges including the Aizhai Bridge The Aizhai Bridge () is a suspension bridge on the G65 Baotou–Maoming Expressway near Jishou, Hunan, China. The bridge was built as part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China National Highway 210
China National Highway 210 (G210) runs from Mandula in Baotou, Inner Mongolia to Fangchenggang, Guangxi. It is 3,097 kilometres in length and runs south from Baotou and passes through the province-level divisions of Shaanxi, Sichuan, Chongqing, Guizhou, and ends in Guangxi. Route and distance See also * China National Highways The China National Highways (CNH/Guodao) () is a network of trunk roads across mainland China. Apart from the expressways of China that are planned and constructed later, most of the CNH are not controlled-access highways. History The bui ... ReferencesOfficial website of Ministry of Transport of PRC 210 Transport in Guangxi Transport in Guizhou Transport in Shaanxi Transport in Sichuan Transport in Chongqing Transport in Inner Mongolia {{PRChina-road-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron
Iron () is a chemical element with symbol Fe (from la, ferrum) and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, right in front of oxygen (32.1% and 30.1%, respectively), forming much of Earth's outer and inner core. It is the fourth most common element in the Earth's crust. In its metallic state, iron is rare in the Earth's crust, limited mainly to deposition by meteorites. Iron ores, by contrast, are among the most abundant in the Earth's crust, although extracting usable metal from them requires kilns or furnaces capable of reaching or higher, about higher than that required to smelt copper. Humans started to master that process in Eurasia during the 2nd millennium BCE and the use of iron tools and weapons began to displace copper alloys, in some regions, only around 1200 BCE. That event is considered the transition from the Bronze Age to the Iron A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copper
Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins, and constantan used in strain gauges and thermocouples for temperature measurement. Copper is one of the few metals that can occur in nature in a directly usable metallic form ( native metals). This led to very early human use in several regions, from circa 8000 BC. Thousands of years later, it was the first metal to be smelted from sulfide ores, circa 5000 BC; the first metal to be cast into a shape in a mold, c. 4000 BC; and the first metal to be purposely alloyed with another metal, tin, to create ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver
Silver is a chemical element with the Symbol (chemistry), symbol Ag (from the Latin ', derived from the Proto-Indo-European wikt:Reconstruction:Proto-Indo-European/h₂erǵ-, ''h₂erǵ'': "shiny" or "white") and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. The metal is found in the Earth's crust in the pure, free elemental form ("native silver"), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a byproduct of copper, gold, lead, and zinc Refining (metallurgy), refining. Silver has long been valued as a precious metal. Silver metal is used in many bullion coins, sometimes bimetallism, alongside gold: while it is more abundant than gold, it is much less abundant as a native metal. Its purity is typically measured on a per-mille basis; a 94%-pure alloy is described as "0.940 fine". As one of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gold
Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal in a pure form. Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements and is solid under standard conditions. Gold often occurs in free elemental ( native state), as nuggets or grains, in rocks, veins, and alluvial deposits. It occurs in a solid solution series with the native element silver (as electrum), naturally alloyed with other metals like copper and palladium, and mineral inclusions such as within pyrite. Less commonly, it occurs in minerals as gold compounds, often with tellurium (gold tellurides). Gold is resistant to most acids, though it does dissolve in aqua regia (a mixture of nitric acid and hydrochloric acid), forming a soluble tetrachloroaurate anion. Gold is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly dolomite, a closely related rock, which contains a high percentage of the mineral dolomite, . ''Magnesian limestone'' is an obsolete and poorly-defined term used variously for dolomite, for limes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Gas
Natural gas (also called fossil gas or simply gas) is a naturally occurring mixture of gaseous hydrocarbons consisting primarily of methane in addition to various smaller amounts of other higher alkanes. Low levels of trace gases like carbon dioxide, nitrogen, hydrogen sulfide, and helium are also usually present. Natural gas is colorless and odorless, so odorizers such as mercaptan (which smells like sulfur or rotten eggs) are commonly added to natural gas supplies for safety so that leaks can be readily detected. Natural gas is a fossil fuel and non-renewable resource that is formed when layers of organic matter (primarily marine microorganisms) decompose under anaerobic conditions and are subjected to intense heat and pressure underground over millions of years. The energy that the decayed organisms originally obtained from the sun via photosynthesis is stored as chemical energy within the molecules of methane and other hydrocarbons. Natural gas can be burned fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petroleum
Petroleum, also known as crude oil, or simply oil, is a naturally occurring yellowish-black liquid mixture of mainly hydrocarbons, and is found in geological formations. The name ''petroleum'' covers both naturally occurring unprocessed crude oil and petroleum products that consist of refined crude oil. A fossil fuel, petroleum is formed when large quantities of dead organisms, mostly zooplankton and algae, are buried underneath sedimentary rock and subjected to both prolonged heat and pressure. Petroleum is primarily recovered by oil drilling. Drilling is carried out after studies of structural geology, sedimentary basin analysis, and reservoir characterisation. Recent developments in technologies have also led to exploitation of other unconventional reserves such as oil sands and oil shale. Once extracted, oil is refined and separated, most easily by distillation, into innumerable products for direct use or use in manufacturing. Products include fuels such as gasol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coal
Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years. Vast deposits of coal originate in former wetlands called coal forests that covered much of the Earth's tropical land areas during the late Carboniferous ( Pennsylvanian) and Permian times. Many significant coal deposits are younger than this and originate from the Mesozoic and Cenozoic eras. Coal is used primarily as a fuel. While coal has been known and used for thousands of years, its usage was limited until the Industrial Revolution. With the invention of the steam engine, coal consumption increased. In 2020, coal supplied about a quarter of the world's primary energy and over a third of its electricity. Some iron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
