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Alwin Mittasch
Paul Alwin Mittasch (Sorbian languages, sorbian: ''Pawoł Alwin Mitaš'') (born 27 December 1869 in Großdehsa/Dažin, today to Löbau, Germany; died 4 June 1953 in Heidelberg, Germany) was a German chemist and scientific historian of Sorbs, Sorbian descent. He is well known by his pioneering and systematic research in the development of catalysts for the industrial ammonia synthesis using the Haber–Bosch process. Life Alwin Mittasch was born in 1869 as a son of a teacher in the Sorbian village Großdehsa, Großdehsa/Dažin in Germany. He had a brother and three sisters. He attended elementary school in his home village of Großdehsa. Then he changed to a boarding school in Bautzen, where in 1889 the teacher seminar finished. Then he began, like his father, a career as a teacher in which he worked as an assistant teacher on the elementary school. In 1892 he moved to Leipzig and began there as a sideline in university of Leipzig with the study of numerous fields to which history, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habilitation
Habilitation is the highest university degree, or the procedure by which it is achieved, in many European countries. The candidate fulfills a university's set criteria of excellence in research, teaching and further education, usually including a dissertation. The degree, abbreviated "Dr. habil." (Doctor habilitatus) or "PD" (for "Privatdozent"), is a qualification for professorship in those countries. The conferral is usually accompanied by a lecture to a colloquium as well as a public inaugural lecture. History and etymology The term ''habilitation'' is derived from the Medieval Latin , meaning "to make suitable, to fit", from Classical Latin "fit, proper, skillful". The degree developed in Germany in the seventeenth century (). Initially, habilitation was synonymous with "doctoral qualification". The term became synonymous with "post-doctoral qualification" in Germany in the 19th century "when holding a doctorate seemed no longer sufficient to guarantee a proficient transfer o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1869 Births
Events January–March * January 3 – Abdur Rahman Khan is defeated at Tinah Khan, and exiled from Afghanistan. * January 5 – Scotland's oldest professional football team, Kilmarnock F.C., is founded. * January 20 – Elizabeth Cady Stanton is the first woman to testify before the United States Congress. * January 21 – The P.E.O. Sisterhood, a philanthropic educational organization for women, is founded at Iowa Wesleyan College in Mount Pleasant, Iowa. * January 27 – The Republic of Ezo is proclaimed on the northern Japanese island of Ezo (which will be renamed Hokkaidō on September 20) by remaining adherents to the Tokugawa shogunate. * February 5 – Prospectors in Moliagul, Victoria, Australia, discover the largest alluvial gold nugget ever found, known as the "Welcome Stranger". * February 20 – Ranavalona II, the Merina Queen of Madagascar, is baptized. * February 25 – The Iron and Steel Institute is formed in Lon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theodor Heuss
Theodor Heuss (; 31 January 1884 – 12 December 1963) was a German liberal politician who served as the first president of West Germany from 1949 to 1959. His cordial nature – something of a contrast to the stern character of chancellor Konrad Adenauer – largely contributed to the stabilization of democracy in West Germany during the ''Wirtschaftswunder'' years. Before beginning his career as a politician, Heuss had been a political journalist. Early life and education Heuss was born in Brackenheim, a small town and wine-making community near Heilbronn in Württemberg, on the border between the historic regions of Swabia and Franconia. He attended the Karlsgymnasium in Heilbronn, from which he graduated in 1902. This selective secondary school has since been renamed the Theodor-Heuss-Gymnasium, in honor of its famous alumnus. Heuss studied economics, art history and political science at the universities of Munich and Berlin. He received his doctorate at Munich, wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DECHEMA
DECHEMA is an abbreviation for "Deutsche Gesellschaft für chemisches Apparatewesen" (German Society for Chemical Apparatus), though it has since been expanded to "''Deutsche Gesellschaft für Chemische Technik und Biotechnologie''" (German Society for Chemical Engineering and Biotechnology). Founded in 1926, this is a non-profit organisation based in Frankfurt. It has over 5000 chemists, biotechnologists, and engineers as personal members, as well as other organisations and company members. DECHEMA awards prizes, such as the DECHEMA medal "for outstanding achievements in the field of chemical apparatus technology." The main purpose of Dechema is to support developments in chemical technology, biotechnology, and environmental protection. It is seen as an interface between science, economy, industry, and the public. To this purpose the trade faiACHEMAis organised and held every three years in Frankfurt am Main, Germany, as the biggest event for chemical technology and biotechnology. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chromium(III) Oxide
Chromium(III) oxide (or chromia) is an inorganic compound with the formula . It is one of the principal oxides of chromium and is used as a pigment. In nature, it occurs as the rare mineral eskolaite. Structure and properties has the corundum structure, consisting of a hexagonal close packed array of oxide anions with of the octahedral holes occupied by chromium. Similar to corundum, is a hard, brittle material (Mohs hardness 8 to 8.5). It is antiferromagnetic up to 307 K, the Néel temperature. It is not readily attacked by acids. Occurrence occurs naturally as the mineral eskolaite, which is found in chromium-rich tremolite skarns, metaquartzites, and chlorite veins. Eskolaite is also a rare component of chondrite meteorites. The mineral is named after Finnish geologist Pentti Eskola. Production The Parisians Pannetier and Binet first prepared the transparent hydrated form of in 1838 via a secret process, sold as a pigment. It is derived from the mineral chromite, . T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc Oxide
Zinc oxide is an inorganic compound with the formula . It is a white powder that is insoluble in water. ZnO is used as an additive in numerous materials and products including cosmetics, food supplements, rubbers, plastics, ceramics, glass, cement, lubricants, paints, ointments, adhesives, sealants, pigments, foods, batteries, ferrites, fire retardants, and first-aid tapes. Although it occurs naturally as the mineral zincite, most zinc oxide is produced synthetically. ZnO is a wide-band gap semiconductor of the II-VI semiconductor group. The native doping of the semiconductor due to oxygen vacancies or zinc interstitials is n-type. Other favorable properties include good transparency, high electron mobility, wide band gap, and strong room-temperature luminescence. Those properties make ZnO valuable for a variety of emerging applications: transparent electrodes in liquid crystal displays, energy-saving or heat-protecting windows, and electronics as thin-film transistors and lig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Matthias Pier
Matthias is a name derived from the Greek Ματθαίος, in origin similar to Matthew. People Notable people named Matthias include the following: In religion: * Saint Matthias, chosen as an apostle in Acts 1:21–26 to replace Judas Iscariot * Matthias of Trakai (–1453), Lithuanian clergyman, bishop of Samogitia and of Vilnius * Matthias Flacius, Lutheran reformer * Matthias the Prophet, see Robert Matthews (religious impostor) Claimed to be the reincarnation of the original Matthias during the Second Great Awakening * Matthias F. Cowley, Latter-day Saint apostle In the arts: * Matthias Grünewald, highly regarded painter from the German Renaissance * Matthías Jochumsson, Icelandic poet * Matthias Lechner, German film art director * Matthias Paul (actor), German actor * Matthias Schoenaerts, Belgian actor In nobility: * Matthias Corvinus of Hungary, King of Hungary * Matthias, Holy Roman Emperor, Emperor of the Holy Roman Empire (Habsburg dynasty) In music: * Matthia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catalyst
Catalysis () is the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst (). Catalysts are not consumed in the reaction and remain unchanged after it. If the reaction is rapid and the catalyst recycles quickly, very small amounts of catalyst often suffice; mixing, surface area, and temperature are important factors in reaction rate. Catalysts generally react with one or more reactants to form intermediates that subsequently give the final reaction product, in the process of regenerating the catalyst. Catalysis may be classified as either homogeneous, whose components are dispersed in the same phase (usually gaseous or liquid) as the reactant, or heterogeneous, whose components are not in the same phase. Enzymes and other biocatalysts are often considered as a third category. Catalysis is ubiquitous in chemical industry of all kinds. Estimates are that 90% of all commercially produced chemical products involve catalysts at some s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron (II, III)-oxid
Iron ( or ) 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, just ahead 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, being mainly deposited by meteorites in its metallic state, with its ores also being found there. Extracting usable metal from iron ores 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 Age. In the modern world, iron alloys, such as steel, stainless steel, cast iron and spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Bosch
Carl Bosch (; 27 August 1874 – 26 April 1940) was a German chemist and engineer and Nobel Laureate in Chemistry. He was a pioneer in the field of high-pressure industrial chemistry and founder of IG Farben, at one point the world's largest chemical company. Biography Early years Carl Bosch was born in Cologne to a successful gas and plumbing supplier. His father was Carl Friedrich Alexander Bosch (1843–1904) and his uncle was Robert Bosch, who pioneered the development of the spark plug and founded the multinational company Bosch. Carl, trying to decide between a career in metallurgy or chemistry, studied at the ''Königlich Technische Hochschule Charlottenburg'' (now the Technical University of Berlin) and the University of Leipzig from 1892 to 1898. Career Carl Bosch attended the University of Leipzig, and this is where he studied under Johannes Wislicenus, and he obtained his doctorate in 1898 for research in organic chemistry. After he left in 1899 he t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stolberg (Rhineland)
Stolberg (, Ripuarian: ) is a town in North Rhine-Westphalia, Germany. It has a long history as an industrial town and belongs to the district Aachen and the lower district court of Eschweiler. Geography Stolberg is located approximately 5 km east of Aachen in a valley at the fringes of the Eifel which begins in the East with the Hürtgenwald and in the South in the municipality of Monschau. It borders Eschweiler in the north and the Aachen city district of Eilendorf in the west. The core of Stolberg is commonly divided into Unterstolberg (''Lower Stolberg'') and Oberstolberg (''Upper Stolberg'') which includes most of the old parts of Stolberg. Other parts of Stolberg are Atsch, Büsbach, Donnerberg, Münsterbusch. In addition the villages of Breinig, Dorff, Gressenich, Mausbach, Schevenhütte, Venwegen, Vicht, Werth, and Zweifall. History Stolberg is first mentioned in documents from the 12th century. It became an important centre of brass production when Protestant br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
