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Pyonggang County
P'yŏnggang County is a ''kun'', or county, in Kangwŏn province, North Korea. It borders Sep'o to the north, Ch'ŏrwŏn to the south, Ich'ŏn to the west, and Kimhwa to the east. Physical features A portion of the county is occupied by the Ryongam wetlands, which also cross into Ch'ŏrwŏn. Most of the county's terrain is mountainous, although there a few small expanses of level ground. The Kwangju and Majŏllyŏng mountains pass through P'yŏnggang. The region is prone to heavy rains. History The P'yŏnggang area was known as Puyang ''hyŏn'' during the Koguryŏ period, and as Kangp'yŏng (강평) under Silla. In the Koryŏ Dynasty, it was included in Tongju (동주); in the Chosŏn dynasty, it took its modern name. Climate Administrative divisions On August 15, 1945, P'yŏnggang county included 1 '' ŭp'' (P'yŏnggang), 6 '' myŏn'' (Sŏ, Nam, Hyŏnnae, Mokchŏn, Sep'o, Yujin). Presently, it is divided into 1 ''ŭp'' and 30 '' ri'' (villages): In addition, Je ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyongyang
Pyongyang () is the Capital city, capital and largest city of North Korea, where it is sometimes labeled as the "Capital of the Revolution" (). Pyongyang is located on the Taedong River about upstream from its mouth on the Yellow Sea. According to the 2008 population census, it has a population of 3,255,288. Pyongyang is a Special cities of North Korea, directly administered city () with a status equal to that of the Provinces of North Korea, North Korean provinces. Pyongyang is one of the oldest cities in Korea. It was the capital of two ancient Korean kingdoms, Gojoseon and Goguryeo, and served as the secondary capital of Goryeo. Following the establishment of North Korea in 1948, Pyongyang became its ''de facto'' capital. The city was again devastated during the Korean War, but was quickly rebuilt after the war with Soviet Union, Soviet assistance. Pyongyang is the political, industrial and transport center of North Korea. It is estimated that 99% of those living in Pyongy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goguryeo
Goguryeo (37 BC – 668 AD) (; ; Old Korean: Guryeo) also later known as Goryeo (; ; Middle Korean: 고ᇢ롕〮, ''kwòwlyéy''), was a Korean kingdom which was located on the northern and central parts of the Korea, Korean Peninsula and the southern and central parts of modern-day Northeast China (Manchuria). At its peak of power, Goguryeo encompassed most of the Korean Peninsula and large parts of Manchuria, along with parts of eastern Mongolia, Inner Mongolia, and modern-day Russia. Along with Baekje and Silla, Goguryeo was one of the Three Kingdoms of Korea. It was an active participant in the power struggle for control of the Korean peninsula and was also associated with the foreign affairs of neighboring polities in China and Yamato period, Japan. Goguryeo was one of the great powers in East Asia until its defeat by a Silla–Tang alliance in 668 after prolonged exhaustion and internal strife following the death of Yeon Gaesomun. After its fall, its territory was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geography Of North Korea
North Korea is located in East Asia in the Northern half of Korea, partially on the Korean Peninsula. It borders three countries: People's Republic of China, China along the Amnok River, Yalu (Amnok) River, Russia along the Tumen River, and South Korea to the south. Topography and drainage The terrain consists mostly of hills and mountains separated by deep, narrow valleys. The coastal plains are wide in the west and discontinuous in the east. Early European visitors to Korea remarked that the country resembled "a sea in a heavy gale" because of the many successive mountain ranges that crisscross the peninsula. Some 80 percent of North Korea's land area is composed of mountains and uplands, with all of the peninsula's mountains with elevations of or more located in North Korea. The great majority of the population lives in the plains and lowlands. Paektu Mountain, the highest point in North Korea at , is a Volcano, volcanic mountain near Manchuria with basalt lava plateau w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diatomaceous Earth
Diatomaceous earth ( ), also known as diatomite ( ), celite, or kieselguhr, is a naturally occurring, soft, siliceous rock, siliceous sedimentary rock that can be crumbled into a fine white to off-white powder. It has a particle size ranging from more than 3 millimeter, mm to less than 1 micrometre, μm, but typically 10 to 200 μm. Depending on the granularity, this powder can have an abrasive feel, similar to pumice powder, and has a low density as a result of its high porosity. The typical chemical composition of oven-dried diatomaceous earth is 80–90% silica, with 2–4% aluminum oxide, alumina (attributed mostly to clay minerals), and 0.5–2% iron oxide. Diatomaceous earth consists of the fossilized remains of diatoms, a type of hard-shelled microalgae, that have accumulated over millions of years. It is used as a filtration aid, mild abrasive in products including metal polishes and toothpaste, mechanical insecticide, absorption (chemistry), absorbent for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alunite
Alunite is a hydroxylated aluminium potassium sulfate mineral, formula potassium, Kaluminium, Al3(sulfur, Soxygen, O4)2(Ohydrogen, H)6. It was first observed in the 15th century at Tolfa, near Rome, where it was mined for the manufacture of alum. First called ''aluminilite'' by Jean-Claude Delamétherie, J.C. Delamétherie in 1797, this name was contracted by François Sulpice Beudant, François Beudant three decades later to alunite. Alunite crystals morphologically are rhombohedron, rhombohedra with interfacial angles of 90° 50', causing them to resemble cubes. Crystal symmetry is trigonal. Minute glistening crystals have also been found loose in cavities in altered rhyolite. Alunite varies in color from white to yellow gray. The hardness on the Mohs scale is 4 and the specific gravity is between 2.6 and 2.8. It is insoluble in water or weak acids, but soluble in sulfuric acid. Sodium can substitute for potassium in the mineral, and when the sodium content is high, is call ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zircon
Zircon () is a mineral belonging to the group of nesosilicates and is a source of the metal zirconium. Its chemical name is zirconium(IV) silicate, and its corresponding chemical formula is Zr SiO4. An empirical formula showing some of the range of substitution in zircon is (Zr1–y, REEy)(SiO4)1–x(OH)4x–y. Zircon precipitates from silicate melts and has relatively high concentrations of high field strength incompatible elements. For example, hafnium is almost always present in quantities ranging from 1 to 4%. The crystal structure of zircon is tetragonal crystal system. The natural color of zircon varies between colorless, yellow-golden, red, brown, blue, and green. The name derives from the Persian ''zargun'', meaning "gold-hued". This word is changed into " jargoon", a term applied to light-colored zircons. The English word "zircon" is derived from ''Zirkon'', which is the German adaptation of this word. Yellow, orange, and red zircon is also known as " hyacint ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nepheline
Nepheline, also called nephelite (), is a rock-forming mineral in the feldspathoid groupa silica-undersaturated aluminosilicate, Na3 K Al4 Si4 O16, that occurs in intrusive and volcanic rocks with low silica, and in their associated pegmatites. It is used in glass and ceramic manufacturing and other industries, and has been investigated as an ore of aluminium. Description and properties Nepheline crystals are rare and belong to the hexagonal system, usually having the form of a short, six-sided prism terminated by the basal plane. The crystals appear to have more symmetry than they actually possess, but unsymmetrical etched figures produced artificially on the prism faces indicate that the crystals are hemimorphic and tetartohedral, the only element of symmetry being a polar hexad axis. Nepheline is found in compact, granular aggregates, and can be white, yellow, gray, green, or reddish. Its hardness on the Mohs scale is 5.5 to 6, and its specific gravity 2.60–2.65. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korean War
The Korean War (25 June 1950 – 27 July 1953) was an armed conflict on the Korean Peninsula fought between North Korea (Democratic People's Republic of Korea; DPRK) and South Korea (Republic of Korea; ROK) and their allies. North Korea was supported by China and the Soviet Union, while South Korea was supported by the United Nations Command (UNC) led by the United States. The conflict was one of the first major proxy wars of the Cold War. Fighting ended in 1953 with an armistice but no peace treaty, leading to the ongoing Korean conflict. After the end of World War II in 1945, Korea, which had been a Korea under Japanese rule, Japanese colony for 35 years, was Division of Korea, divided by the Soviet Union and the United States into two occupation zones at the 38th parallel north, 38th parallel, with plans for a future independent state. Due to political disagreements and influence from their backers, the zones formed their governments in 1948. North Korea was led by Kim Il S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cheorwon County
Cheorwon County (''Cheorwon-gun'' ), also spelled Chorwon, is a county in Gangwon Province, South Korea. It is located right next to the North Korean border. History *Goguryeo – first named ''Moeuldongbi''. *Silla dynasty – name changed to ''Cheolseong''. **During the Later Three Kingdoms period of Korea, Gung Ye determined it capital of Taebong. *Goryeo dynasty **In 918, during the rule of King Taejo of Goryeo, its name was changed to Cheorwon and then renamed as ''Dongju''. *Joseon dynasty ** King Taejong changed its name into 'Dohobu'. **In 26th year of King Sejong's reign (1434), it was transferred from Gyeonggi-do to Gangwon. **On May 26 of the King Gojong, altered to Chuncheon-bu. Korean War Following the Division of Korea in 1945, all of Cheorwon County was part of North Korea. During the Korean War the region changed hands several times during the UN invasion of North Korea and the Chinese invasion of South Korea, by 1951 the frontlines had stabilized, cuttin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myeon (administrative Division)
A ''myeon'', ''myŏn'', ''myon'', or township () is an administrative unit in South Korea similar to the unit of town. Along with town, township is of a county and some cities of fewer than 500,000 population. ''Myeon'' have smaller populations than towns and represent the rural areas of a county or city. Townships are subdivided into villages. The minimum population limit is 6,000. See also *Administrative divisions of South Korea South Korea is made up of 22 first-tier administrative divisions: 6 List of special cities of South Korea#Position in hierarchy and types, metropolitan cities (''gwangyeoksi'' ), 1 List of special cities of South Korea, special city (''teukbyeo ... References {{SouthKorea-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eup (administrative Division)
An ''eup'' or ''ŭp'' () is an administrative unit in both North Korea and South Korea similar to the unit of town. In South Korea Along with " myeon", an "eup" is one of the divisions of a county ("gun"), and of some cities ("si") with a population of less than 500,000. The main town or towns in a county—or the secondary town or towns within a city's territory—are designated as "eup"s. Towns are subdivided into villages ("ri"). In order to form an eup, the minimum population required is 20,000. See also *Administrative divisions of North Korea *Administrative divisions of South Korea South Korea is made up of 22 first-tier administrative divisions: 6 List of special cities of South Korea#Position in hierarchy and types, metropolitan cities (''gwangyeoksi'' ), 1 List of special cities of South Korea, special city (''teukbyeo ... Notes Up Subdivisions of South Korea {{SouthKorea-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korea Meteorological Administration
The Korea Meteorological Administration (KMA; ) is the national meteorological service of South Korea. The service started in 1904 joining the WMO in 1956. Numerical weather prediction is performed using the Unified Model software suite. History The current administration was established in 1990. Temporary observatories set up in 1904 in Busan, Incheon, Mokpo and elsewhere were precursors to the current KMA. The Central Meteorological Office (CMO) was established in August 1949. In April 1978, CMO was renamed the Korea Meteorological Service (KMS). In 1999, the administration introduced a meteorological supercomputer for forecasting. As of November 2021, supercomputers ''Guru'' and ''Maru'' ranked 27th and 28th respectively TOP500, in the world. In 2010, the KMA launched South Korea’s first geostationary meteorological satellite, the Communication, Ocean and Meteorological Satellite (COMS), also known as Chollian. Chollian started its official operation in 2011. The Seoul and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
