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Aleksandar Zega
Aleksandar Zega (29 May 1860, Novo Selo – 29 March 1928, Belgrade) was a prominent Serbian chemist who held professional positions in the Government, Municipal and Customs Laboratories, and made a number of applied and theoretical contributions. He dealt with analytical and organic chemistry, specifically the analysis of mineral waters and foodstuffs. He studied and worked in Switzerland, however he wrote and published most of his works during his work and stay in Serbia. He was a contemporary of Milorad Z. Jovičić (1868–1937) and Wladimir Brunetti. Biography Zega was born in 1860 in Novo Selo to landowners Jelena and Kosta Zega. He finished primary school in his hometown and attended high school in Pančevo. He attended universities in Vienna and Zurich, graduating from the latter in 1879. He was awarded a Canton of Zurich scholarship, which enabled him to continue his chemistry studies at the ETHZ and the University of Zurich along with other chemists Viktor Meyer and Ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banatsko Novo Selo
Banatsko Novo Selo ( sr-cyr, Банатско Ново Село ) is a village located in the municipality of Pančevo, South Banat District, Vojvodina, Serbia. The village has a Serb ethnic majority and its population numbering 7,089 people ( 2011 census). Name The Serbian place name of the village is Banatsko Novo Selo and means ''Banatian New Village'', but it has previously also been known by different names throughout its history. Older Serbian name of the village was simply Novo Selo, while in German it has been known as ''Banater Neudorf'', in Hungarian it has been known as ''Révújfalu'' and in Romanian it has been known as ''Satu Nou''- a name still announced on entry and exit signs along the highway due to the large Romanian ethnic minority in the town. Geography Banatsko Novo Selo is located on flat and fertile plains at , approximately 18 km NE of Pančevo and 37 km NE of Pančevo bridge to Belgrade.The altitude above sea level is roughly about 105 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orcinol
Orcinol is an organic compound with the formula CH3C6H3(OH)2. It occurs in many species of lichens including ''Roccella tinctoria'' and ''Lecanora''. Orcinol has been detected in the "toxic glue" of the ant species ''Camponotus saundersi''. It is a colorless solid. It is related to resorcinol, 1,3-C6H4(OH)2. Synthesis and reactions Orcinol was first prepared by dehydroacetic acid, a conversion that involved ring-opening of the pyrone to a triketone. This early experiment helped establish the rich condensation chemistry of polyketides. It can be obtained by fusing extract of aloes with potash, followed by acidification. It undergoes O-methylation with dimethylsulfate. It is used in the production of the dye orcein and as a reagent in some chemical tests for pentoses, such as Bial's Test. It may be synthesized from toluene; more interesting is its production when acetone dicarboxylic ester is condensed with the aid of sodium. It crystallizes in colorless prisms with one molecul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Makiš
Makiš ( sr, Макиш) is a forest and an urban neighborhood of Belgrade, the capital of Serbia. It is located in Belgrade's municipality of Čukarica. Location Makiš is bordered by the Sava river and Sava Lake to the west and north, Čukarica and Čukarička Padina to the northeast, Julino Brdo, Žarkovo, Bele Vode and Rupčine to the east, Železnik to the south and Ostružnica to the southwest. Geography For the most part, Makiš is a marshy forest, crossed by many small streams and canals, most notably the ''Marevica''. Northern part is known as ''Jedek'', western as ''Aščinica'' and central as ''Veliko Okno''. Part of the Sava's alluvial plane, the main section of the area, which covers several hundreds of hectares, is covered with gravel and sand which are 10,000 years old. In time, a plentiful water source formed. As the Sava river reaches the bend at Makiš, some water continues in the straight direction, penetrating the ground in the fan-shaped manner, without ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ćuprija
Ćuprija (Serbian Cyrillic: Ћуприја, ) is a town and municipality located in the Pomoravlje District of central Serbia. The population of the town is 19,380, while the municipality has 30,645 inhabitants. History The Romans founded the town as a fort Horreum Margi (Horreum: ''Granary'', Margi: '' Morava'') on the road from Constantinople to Rome, where it crosses the river now known as Velika Morava. It served as a Roman military base, had a shield factory and gained the status of ''municipium'' before AD 224. In 505, the Romans were defeated by Goths and Huns under Mundo, a descendant of Attila the Hun. Under Slavic rule, it became known as Ravno (literal translation to English would be "flat"), since it is in a flat river valley. Some local names (of the villages Paljane and Isakovo, of the river Mirosava) recall the major clash in autumn 1191 between the Serbs (under Stefan Nemanja) and the Byzantines (under Emperor Isaac II Angelos). In the 15th century, Ćuprija b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Well Water
A well is an excavation or structure created in the ground by digging, driving, or drilling to access liquid resources, usually water. The oldest and most common kind of well is a water well, to access groundwater in underground aquifers. The well water is drawn up by a pump, or using containers, such as buckets or large water bags that are raised mechanically or by hand. Water can also be injected back into the aquifer through the well. Wells were first constructed at least eight thousand years ago and historically vary in construction from a simple scoop in the sediment of a dry watercourse to the qanats of Iran, and the stepwells and sakiehs of India. Placing a lining in the well shaft helps create stability, and linings of wood or wickerwork date back at least as far as the Iron Age. Wells have traditionally been sunk by hand digging, as is still the case in rural areas of the developing world. These wells are inexpensive and low-tech as they use mostly manual labour, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War I
World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fighting occurring throughout Europe, the Middle East, Africa, the Pacific, and parts of Asia. An estimated 9 million soldiers were killed in combat, plus another 23 million wounded, while 5 million civilians died as a result of military action, hunger, and disease. Millions more died in genocides within the Ottoman Empire and in the 1918 influenza pandemic, which was exacerbated by the movement of combatants during the war. Prior to 1914, the European great powers were divided between the Triple Entente (comprising France, Russia, and Britain) and the Triple Alliance (containing Germany, Austria-Hungary, and Italy). Tensions in the Balkans came to a head on 28 June 1914, following the assassination of Archduke Franz Ferdin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orcinol
Orcinol is an organic compound with the formula CH3C6H3(OH)2. It occurs in many species of lichens including ''Roccella tinctoria'' and ''Lecanora''. Orcinol has been detected in the "toxic glue" of the ant species ''Camponotus saundersi''. It is a colorless solid. It is related to resorcinol, 1,3-C6H4(OH)2. Synthesis and reactions Orcinol was first prepared by dehydroacetic acid, a conversion that involved ring-opening of the pyrone to a triketone. This early experiment helped establish the rich condensation chemistry of polyketides. It can be obtained by fusing extract of aloes with potash, followed by acidification. It undergoes O-methylation with dimethylsulfate. It is used in the production of the dye orcein and as a reagent in some chemical tests for pentoses, such as Bial's Test. It may be synthesized from toluene; more interesting is its production when acetone dicarboxylic ester is condensed with the aid of sodium. It crystallizes in colorless prisms with one molecul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sava
The Sava (; , ; sr-cyr, Сава, hu, Száva) is a river in Central and Southeast Europe, a right-bank and the longest tributary of the Danube. It flows through Slovenia, Croatia and along its border with Bosnia and Herzegovina, and finally through Serbia, feeding into the Danube in its capital, Belgrade. The Sava forms the main northern limit of the Balkan Peninsula, and the southern edge of the Pannonian Plain. The Sava is long, including the Sava Dolinka headwater rising in Zelenci, Slovenia. It is the largest tributary of the Danube by volume of water, and second-largest after the Tisza in terms of catchment area () and length. It drains a significant portion of the Dinaric Alps region, through the major tributaries of Drina, Bosna, Kupa, Una, Vrbas, Lonja, Kolubara, Bosut and Krka. The Sava is one of the longest rivers in Europe and among the longest tributaries of another river. The population in the Sava River basin is estimated at 8,176,000, and is shared by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marko Leko
Marko T. Leko ( sr-cyr, Марко Т. Леко) was a notable Serbian scientist, chemist, professor and president of the Serbian Red Cross. He played a major role in the professionalisation of chemistry in Serbia. Leko was born in Belgrade, Serbia, on September 17, 1853 to a merchant family. He attended and graduated from Polytechnic School in Zurich and obtained his doctoral degree in 1875. For a short period, he was employed in Hoffman's laboratory. Career He has 52 publications mostly in the areas of organic and analytical chemistry. Thanks to work he dedicated in writing his doctoral dissertation and the number of works that followed, he was able to solve one of the most sought problems of the time: does ammonium chloride and its closely related compounds belong to compounds of five valences nitrogen, N H4 Cl, or to compounds such as NH3·HCl. His work in analytical chemistry had two main interests: researching natural resources of Earth (mineral waters), and finding and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grandes écoles
Grandes may refer to: * Agustín Muñoz Grandes, Spanish general and politician *Banksia ser. Grandes, a series of plant species native to Australia * Grandes y San Martín, a municipality located in the province of Ávila, Castile and León, Spain *Grandes (islands) Grandes ( el, Γκράντες) is a group of three small islands off the east coast of Crete. Administratively it comes within the Itanos municipality in Lasithi. Grandes can be seen from the Minoan site of Roussolakkos near Palekastro as ca ..., a group of three small islands in the Aegean Sea off the east coast of Crete * ''Grandes'' (album), by Maná {{disambig, geo, surname ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pirot
Pirot ( sr-cyr, Пирот) is a city and the administrative center of the Pirot District in southeastern Serbia. According to 2011 census, the urban area of the city has a population of 38,785, while the population of the city administrative area has 57,928 inhabitants. The city has rich geographical features, including the mountains of Stara Planina, Vlaška Planina, Belava, Suva Planina; rivers which flow through the town, including Nišava, Jerma, Rasnička Reka, Temštica and the Visočica; and four lakes, the Zavoj Lake, Berovacko Lake, Krupac Lake and Sukovo Lake. It also has a rich culture, with notable Orthodox church buildings, including the Church of St. Petka, and the monastery of St. Georges and St. John the Theologian from the late 14th century, both of which display an example of medieval architecture. Pirot is known for its traditional woven carpet, the Pirot carpet (''Pirot ćilim''). Geography The municipality of Pirot covers an area of , with over seventy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doctorate
A doctorate (from Latin ''docere'', "to teach"), doctor's degree (from Latin ''doctor'', "teacher"), or doctoral degree is an academic degree awarded by universities and some other educational institutions, derived from the ancient formalism ''licentia docendi'' ("licence to teach"). In most countries, a research degree qualifies the holder to teach at university level in the degree's field or work in a specific profession. There are a number of doctoral degrees; the most common is the Doctor of Philosophy (PhD), awarded in many different fields, ranging from the humanities to scientific disciplines. In the United States and some other countries, there are also some types of technical or professional degrees that include "doctor" in their name and are classified as a doctorate in some of those countries. Professional doctorates historically came about to meet the needs of practitioners in a variety of disciplines. Many universities also award honorary doctorates to individuals d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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