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Mining In Croatia
As early as 1914 Tvonica Karbida I Ferolegura Dalmacija owned a ferrochromium smelter in Dugi Rat. The Boris Kidric aluminum smelter at Sibenik was completely destroyed as a result of the Croatian War of Independence, war for independence that erupted in 1991. History The town of Rude, Croatia, Rude in the Samoborska Gora Mountains was a source of copper as early as the 16th century. In fact, its copper production at the time "was twice the amount of the total copper production in England and four times that of Norway, reaching one third of the production of the famous Swedish mine in Falun." There was a metallic ore mine in Zrinski. Kraševi Zviri was the site of a zinc mine. Trgovska Gora is "a mining area highly significant in Croatian history". Pyritised bauxites were mined in Istria's Mirna valley at Minjera from the 16th century, in order to obtain vitriol and alum. From 1811, there was a sulfur mine in Radoboj. References Mining in Croatia {{mining-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ferrochromium
Ferrochrome, or ferrochromium (FeCr) is a type of ferroalloy, that is, an alloy of chromium and iron, generally containing 50 to 70% chromium by weight. Ferrochrome is produced by electric arc carbothermic reduction of chromite. Most of the global output is produced in South Africa, Kazakhstan and India, which have large domestic chromite resources. Increasing amounts are coming from Russia and China. Production of steel, especially that of stainless steel with chromium content of 10 to 20%, is the largest consumer and the main application of ferrochrome. Usage Over 80% of the world's ferrochrome is utilised in the production of stainless steel. In 2006, 28,000,000 tons of stainless steel were produced. Stainless steel depends on chromium for its appearance and resistance to corrosion. Average chrome content in stainless steel is approx. 18%. It is also used to add chromium to carbon steel. FeCr from South Africa, known as "charge chrome" and produced from a Cr containing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulfur
Sulfur (or sulphur in British English) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S8. Elemental sulfur is a bright yellow, crystalline solid at room temperature. Sulfur is the tenth most abundant element by mass in the universe and the fifth most on Earth. Though sometimes found in pure, native form, sulfur on Earth usually occurs as sulfide and sulfate minerals. Being abundant in native form, sulfur was known in ancient times, being mentioned for its uses in ancient India, ancient Greece, China, and ancient Egypt. Historically and in literature sulfur is also called brimstone, which means "burning stone". Today, almost all elemental sulfur is produced as a byproduct of removing sulfur-containing contaminants from natural gas and petroleum.. Downloahere The greatest commercial use of the element is the production o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alum
An alum () is a type of chemical compound, usually a hydrated double salt, double sulfate salt (chemistry), salt of aluminium with the general chemical formula, formula , where is a valence (chemistry), monovalent cation such as potassium or ammonium. By itself, "alum" often refers to potassium alum, with the formula . Other alums are named after the monovalent ion, such as sodium alum and ammonium alum. The name "alum" is also used, more generally, for salts with the same formula and structure, except that aluminium is replaced by another valence (chemistry), trivalent metal ion like chromium#Chromium(III), chromium, and/or sulfur is replaced by another chalcogen like selenium. The most common of these analogs is chrome alum . In most industries, the name "alum" (or "papermaker's alum") is used to refer to aluminium sulfate, , which is used for most industrial flocculation (the variable is an integer whose size depends on the amount of water absorbed into the alum). In medic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vitriol
Vitriol is the general chemical name encompassing a class of chemical compound comprising sulfates of certain metalsoriginally, iron or copper. Those mineral substances were distinguished by their color, such as green vitriol for hydrated iron(II) sulfate and blue vitriol for hydrated copper(II) sulfate.Vitriol entry in the online Encyclopaedia Britannica. Accessed on 2020-08-28. These materials were originally found as crystals formed by evaporation of groundwater that percolated through minerals and collected in pools on the floor of old s. The word ''vitriol'' comes from the Latin word ''vitriolus'', meanin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mirna Valley
MicroRNA (miRNA) are small, single-stranded, non-coding RNA molecules containing 21 to 23 nucleotides. Found in plants, animals and some viruses, miRNAs are involved in RNA silencing and post-transcriptional regulation of gene expression. miRNAs base-pair to complementary sequences in mRNA molecules, then gene silence said mRNA molecules by one or more of the following processes: (1) cleavage of mRNA strand into two pieces, (2) destabilization of mRNA by shortening its poly(A) tail, or (3) translation of mRNA into proteins. This last method of gene silencing is the least efficient of the three, and requires the aid of ribosomes. miRNAs resemble the small interfering RNAs (siRNAs) of the RNA interference (RNAi) pathway, except miRNAs derive from regions of RNA transcripts that fold back on themselves to form short hairpins, whereas siRNAs derive from longer regions of double-stranded RNA. The human genome may encode over 1900 miRNAs, although more recent analysis suggests that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Istria
Istria ( ; Croatian language, Croatian and Slovene language, Slovene: ; ist, Eîstria; Istro-Romanian language, Istro-Romanian, Italian language, Italian and Venetian language, Venetian: ; formerly in Latin and in Ancient Greek) is the largest peninsula within the Adriatic Sea. The peninsula is located at the head of the Adriatic between the Gulf of Trieste and the Kvarner Gulf. It is shared by three countries: Croatia, Slovenia, and Italy.Marcel Cornis-Pope, John Neubauer''History of the literary cultures of East-Central Europe: junctures and disjunctures in the 19th And 20th Centuries'' John Benjamins Publishing Co. (2006), Alan John Day, Roger East, Richard Thomas''A political and economic dictionary of Eastern Europe'' Routledge, 1sr ed. (2002), Croatia encapsulates most of the Istrian peninsula with its Istria County. Geography The geographical features of Istria include the Učka/Monte Maggiore mountain range, which is the highest portion of the Ćićarija/Cicceria ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc
Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodic table. In some respects, zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+ ions are of similar size.The elements are from different metal groups. See periodic table. Zinc is the 24th most abundant element in Earth's crust and has five stable isotopes. The most common zinc ore is sphalerite (zinc blende), a zinc sulfide mineral. The largest workable lodes are in Australia, Asia, and the United States. Zinc is refined by froth flotation of the ore, roasting, and final extraction using electricity ( electrowinning). Zinc is an essential trace element for humans, animals, plants and for microorganisms and is necessary for prenatal and postnatal development. It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dugi Rat
Dugi Rat is a municipality in Croatia in the Split-Dalmatia County. It has a population of 7,092 (2011 census), 98% of whom are Croats The Croats (; hr, Hrvati ) are a South Slavic ethnic group who share a common Croatian ancestry, culture, history and language. They are also a recognized minority in a number of neighboring countries, namely Austria, the Czech Republic, G .... In Croatian ''dugi rat'' means "long cape". References External links Populated places in Split-Dalmatia County Municipalities of Croatia Populated coastal places in Croatia {{SplitDalmatia-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
