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Pyeonggang 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, Jeongye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyongyang
Pyongyang (, , ) is the capital and largest city of North Korea, where it is known 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 directly administered city () with equal status to 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. Much of the city was destroyed during the First Sino-Japanese War, but it was revived Korea under Japanese rule, under Japanese rule and became an industrial center. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyeon
Korea's provinces ('' Do''; hangul: 도; hanja: ) have been the primary administrative division of Korea since the mid Goryeo dynasty in the early 11th century, and were preceded by provincial-level divisions (''Ju'' and ''Mok'') dating back to Unified Silla, in the late 7th century. During the Unified Silla Period (AD 668–935), Korea was divided into nine ''Ju'' (주; ), an old word for "province" that was used to name both the kingdom's provinces and its provincial capitals. After Goryeo defeated Silla and Later Baekje in 935 and 936 respectively, the new kingdom "was divided into one royal district (''Ginae;'' 기내; ) and twelve administrative districts (''Mok;'' 목; )" ( Nahm 1988), which were soon redivided into ten provinces (''Do''). In 1009 the country was again redivided, this time into one royal district, five provinces (''Do'') and two frontier districts (''Gye;'' 계; ?). After the Joseon dynasty's rise to power and the formation of Joseon in 1392, the country ... [...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: China along the 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 volcanic mountain near Manchuria with basalt lava plateau with elevations between and above sea level. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diatomaceous Earth
Diatomaceous earth (), diatomite (), or kieselgur/kieselguhr is a naturally occurring, soft, 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 μm to less than 1 mm, 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% 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. It is used as a filtration aid, mild abrasive in products including metal polishes and toothpaste, mechanical insecticide, absorbent for liquids, matting agent for coatings, reinforcing filler in plastics and rubber, anti-block in plastic films, porous support for c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alunite
Alunite is a hydroxylated aluminium potassium sulfate mineral, formula K Al3( S O4)2(O 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 J.C. Delamétherie in 1797, this name was contracted by 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 called natroalunite. Alunite is an analog of jarosite, where aluminium replaces Fe3+. Alunite o ... [...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 corrupted 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 "hyacinth", ... [...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 5.5–6, and its specific gravity 2.60–2.65. It i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myeon (administrative Division)
A ''myeon'', ''myŏn'', ''myon'', or township ( ko, 면) 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 17 first-tier administrative divisions: 6 metropolitan cities (''gwangyeoksi'' ), 1 special city (''teukbyeolsi'' ), 1 special self-governing city (''teukbyeol-jachisi'' ), and 9 provinces ('' do'' ), including one ... 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 17 first-tier administrative divisions: 6 metropolitan cities (''gwangyeoksi'' ), 1 special city (''teukbyeolsi'' ), 1 special self-governing city (''teukbyeol-jachisi'' ), and 9 provinces ('' do'' ), including one ... 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 the Republic of 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 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 an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseon Dynasty
Joseon (; ; Middle Korean: 됴ᇢ〯션〮 Dyǒw syéon or 됴ᇢ〯션〯 Dyǒw syěon), officially the Great Joseon (; ), was the last dynastic kingdom of Korea, lasting just over 500 years. It was founded by Yi Seong-gye in July 1392 and replaced by the Korean Empire in October 1897. The kingdom was founded following the aftermath of the overthrow of Goryeo in what is today the city of Kaesong. Early on, Korea was retitled and the capital was relocated to modern-day Seoul. The kingdom's northernmost borders were expanded to the natural boundaries at the rivers of Amrok and Tuman through the subjugation of the Jurchens. During its 500-year duration, Joseon encouraged the entrenchment of Confucian ideals and doctrines in Korean society. Neo-Confucianism was installed as the new state's ideology. Buddhism was accordingly discouraged, and occasionally the practitioners faced persecutions. Joseon consolidated its effective rule over the territory of current Korea and saw the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goryeo
Goryeo (; ) was a Korean kingdom founded in 918, during a time of national division called the Later Three Kingdoms period, that unified and ruled the Korean Peninsula until 1392. Goryeo achieved what has been called a "true national unification" by Korean historians as it not only unified the Later Three Kingdoms but also incorporated much of the ruling class of the northern kingdom of Balhae, who had origins in Goguryeo of the earlier Three Kingdoms of Korea. The name "Korea" is derived from the name of Goryeo, also spelled Koryŏ, which was first used in the early 5th century by Goguryeo. According to Korean historians, it was during the Goryeo period that the individual identities of Goguryeo, Baekje, and Silla were successfully merged into a single entity that became the basis of modern-day 'Korean' identity. Throughout its existence, Goryeo, alongside Unified Silla, was known to be the "Golden Age of Buddhism" in Korea. As the state religion, Buddhism achieved its highes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
