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Martin Freund
Martin Freund (August 13, 1863 in Nysa, Kingdom of Prussia – March 13, 1920 in Frankfurt am Main) was a German chemist and professor at the Goethe-Universität Frankfurt am Main. Life Freund was born the son of a Jewish merchant. After graduating from the Realgymnasium at the Zwinger in Breslau, he started to study chemistry at the University of Breslau and the Humboldt University of Berlin in 1881. He received his doctorate in 1884. (contribution to the knowledge of malonic acid). During his studies he became a member of the ''Akademischer Naturwissenschaftlicher Verein zu Breslau'' in 1881. He was assistant to Hermann Wichelhaus and lecture assistant to August Wilhelm von Hofmann. In 1888 he habilitated in Berlin and in 1895 joined the Physikalischer Verein in Frankfurt am Main as a lecturer, where he headed its chemical laboratory. From 1905 he was a lecturer at the Akademie für Sozial- und Handelswissenschaften (Academy for Social and Commercial Sciences). In 1914 he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martin Freund Ca
Martin may refer to: Places Antarctica * Martin Peninsula, Marie Byrd Land * Port Martin, Adelie Land * Point Martin, South Orkney Islands Europe * Martin, Croatia, a village * Martin, Slovakia, a city * Martín del Río, Aragón, Spain * Martín River, a tributary of the Ebro river in Spain * Martin (Val Poschiavo), Switzerland England * Martin, Hampshire * Martin, Kent * Martin, East Lindsey, Lincolnshire, a hamlet and former parish * Martin, North Kesteven, Lincolnshire, a village and parish * Martin Hussingtree, Worcestershire * Martin Mere, a lake in Lancashire ** WWT Martin Mere, a wetland nature reserve that includes the lake and surrounding areas North America Canada * Rural Municipality of Martin No. 122, Saskatchewan, Canada * Martin Islands, Nunavut, Canada United States * Martin, Florida * Martin, Georgia * Martin, Indiana * Martin, Kentucky * Martin, Louisiana * Martin, Michigan * Martin, Nebraska * Martin, North Dakota * Martin, Ohio * Martin, South Caro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metallgesellschaft
Metallgesellschaft AG was formerly one of Germany's largest industrial conglomerates based in Frankfurt. It had over 20,000 employees and revenues in excess of 10 billion US dollars. It had over 250 subsidiaries specializing in mining, specialty chemicals (Chemetall), commodity trading, financial services, and engineering ( Lurgi). Henry Merton & Company, Ltd was previously a branch of the Metallgesellschaft. History Metallgesellschaft AG was incorporated in Frankfurt am Main in 1881 by Wilhelm Ralph Merton, his father Ralph Merton, and Leo Ellinger. Merton was responsible for business strategy, Ellinger for operations, and a cousin of Merton, Zachary Hochschild, for marketing and international activities. Their main competitors were the two other large metal trading companies of Germany: '' Aron Hirsch & Sohn'' in Halberstadt, and ''Beer, Sondheimer & Co'' in Frankfurt am Main. Although Metallgesellschaft was a joint stock company, it was operated like a family business with ke ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1920 Deaths
Events January * January 1 ** Polish–Soviet War: The Russian Red Army increases its troops along the Polish border from 4 divisions to 20. ** Kauniainen in Finland, completely surrounded by the city of Espoo, secedes from Espoo as its own market town. * January 7 – Russian Civil War: The forces of White movement, Russian White Admiral Alexander Kolchak surrender in Krasnoyarsk; the Great Siberian Ice March ensues. * January 10 ** The Treaty of Versailles takes effect, officially ending World War I. ** The League of Nations Covenant enters into force. On January 16, the organization holds its first council meeting, in Paris. * January 11 – The Azerbaijan Democratic Republic is recognised de facto by European powers in Palace of Versailles, Versailles. * January 13 – ''The New York Times'' Robert H. Goddard#Publicity and criticism, ridicules American rocket scientist Robert H. Goddard, which it will rescind following the launch of Apollo 11 in 1969. * Janua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1863 Births
Events January * January 1 – Abraham Lincoln signs the Emancipation Proclamation during the third year of the American Civil War, making the abolition of slavery in the Confederate States of America an official war goal. The signing proclaimed the freedom of 3.1 million of the nation's four million slaves and immediately frees 50,000 of them, with the rest freed as the Union Army advances. This event marks the start of America's Reconstruction era, Reconstruction Era. * January 2 – Master Lucius Tar Paint Company (''Teerfarbenfabrik Meister Lucius''), predecessor of Hoechst AG, Hoechst, as a worldwide Chemical, chemical manufacturing brand, founded in a suburb of Frankfurt am Main, Germany. * January 4 – Founding date of the New Apostolic Church, a Christian and chiliastic church, in a schism with the Catholic Apostolic Church in Hamburg, Germany. * January 7 – In the Cantons of Switzerland, Swiss canton of Ticino, the village of Bedretto is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemiker-Zeitung
''Chemiker Zeitung'' was a German scientific journal with publications on general and industrial chemistry. It was established in 1877, and it issued in Köthen. From 1932 onwards, it was named ''Forschrittsbericht der Chemiker-Zeitung über die wichtigsten Gebiete der Chemie und chemischen Industrie'' and in 1950 the name changed to ''Deutsche Chemiker-Zeitschrift''. Publication was suspended between 1945 and 1949. The journal was continued from 1959 to 1968 as the ''Chemiker-Zeitung, Chemische Apparatur''. In 1992, ''Chemiker Zeitung'' was merged with '' Journal für praktische Chemie'' (established in 1834). Since 2001, '' Advanced Synthesis & Catalysis'' (publisher: Wiley-VCH, Weinheim, Germany) integrated both ''Chemiker Zeitung'' and ''Journal für praktische Chemie''. See also * Science and technology in Germany Science and technology in Germany has a long and illustrious history, and research and development efforts form an integral part of Economy of Germany, the coun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxycodone
Oxycodone, sold under the brand name Roxicodone and OxyContin (which is the extended-release form) among others, is a semi-synthetic opioid used medically for the treatment of moderate to severe pain. It is highly addictive and is a commonly drug abuse, abused drug. It is usually taken oral administration, by mouth, and is available in immediate release, immediate-release and controlled release, controlled-release formulations. Onset of pain relief typically begins within fifteen minutes and lasts for up to six hours with the immediate-release formulation. In the United Kingdom, it is available by Injection (medicine), injection. Combination drug, Combination products are also available with oxycodone/paracetamol, paracetamol (acetaminophen), oxycodone/ibuprofen, ibuprofen, oxycodone/naloxone, naloxone, naltrexone, and oxycodone/aspirin, aspirin. Common side effects include euphoria, constipation, nausea, vomiting, Anorexia (symptom), loss of appetite, Somnolence, drowsiness, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opioid
Opioids are a class of Drug, drugs that derive from, or mimic, natural substances found in the Papaver somniferum, opium poppy plant. Opioids work on opioid receptors in the brain and other organs to produce a variety of morphine-like effects, including analgesic, pain relief. The terms "opioid" and "opiate" are sometimes used interchangeably, but the term "opioid" is used to designate all substances, both natural and synthetic, that bind to opioid receptors in the brain. Opiates are alkaloid compounds naturally found in the opium poppy plant ''Papaver somniferum''. Medically they are primarily used for pain relief, including anesthesia. Other medical uses include suppression of diarrhea, replacement therapy for opioid use disorder, and Cold medicine, suppressing cough. The opioid receptor antagonist naloxone is used to reverse opioid overdose. Extremely potent opioids such as carfentanil are approved only for Veterinary medicine, veterinary use. Opioids are also frequently use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edmund Speyer
Jakob Edmund Speyer (11 November 1878 – 5 May 1942) was a high-ranking German university lecturer and chemist of Jewish descent. He was persecuted during the National Socialist era, losing his profession and his livelihood. He was deported to the Lodz ghetto, where he died in 1942. Life Speyer was born in Frankfurt am Main as the son of the Frankfurt merchant M. Speyer. After graduating from high school in Frankfurt in 1896, he began to study chemistry at Ruprecht-Karls-Universität Heidelberg. Here he was awarded a doctorate by Emil Knoevenagel in July 1901 with a thesis ''Zur Kenntnis der Additionsfähigkeit ungesättigter Verbindungen''. Speyer then went back to Frankfurt, where he first worked as a research assistant at the University of Frankfurt. In 1915 he received his habilitation with ''Contributions to the Knowledge of Thebaine and its Derivatives''. With Martin Freund, who was head of the Chemical Institute at the Physikalischer Verein, he first synthesised the opioi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aromatic
In organic chemistry, aromaticity is a chemical property describing the way in which a conjugated system, conjugated ring of unsaturated bonds, lone pairs, or empty orbitals exhibits a stabilization stronger than would be expected from conjugation alone. The earliest use of the term was in an article by August Wilhelm Hofmann in 1855. There is no general relationship between aromaticity as a chemical property and the olfaction, olfactory properties of such compounds. Aromaticity can also be considered a manifestation of cyclic delocalization and of Resonance (chemistry), resonance. This is usually considered to be because electrons are free to cycle around circular arrangements of atoms that are alternately single- and double-covalent bond, bonded to one another. This commonly seen model of aromatic rings, namely the idea that benzene was formed from a six-membered carbon ring with alternating single and double bonds (cyclohexatriene), was developed by Friedrich August Kekulé ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malonic Acid
Malonic acid is a dicarboxylic acid with structure CH2(COOH)2. The ionized form of malonic acid, as well as its esters and salts, are known as malonates. For example, diethyl malonate is malonic acid's diethyl ester. The name originates from the Greek word μᾶλον (''malon'') meaning 'apple'. History Malonic acid is a naturally occurring substance found in many fruits and vegetables. There is a suggestion that citrus fruits produced in organic farming contain higher levels of malonic acid than fruits produced in conventional agriculture. Malonic acid was first prepared in 1858 by the French chemist Victor Dessaignes via the oxidation of malic acid. Hermann Kolbe and Hugo Müller independently discovered how to synthesize malonic acid from propionic acid, and decided to publish their results back-to-back in the Chemical Society journal in 1864. This led to priority dispute with Hans Hübner and Maxwell Simpson who had independently published preliminary results on rela ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morphine
Morphine, formerly also called morphia, is an opiate that is found naturally in opium, a dark brown resin produced by drying the latex of opium poppies (''Papaver somniferum''). It is mainly used as an analgesic (pain medication). There are multiple methods used to administer morphine: oral; sublingual administration, sublingual; via inhalation; intramuscular, injection into a muscle, Subcutaneous injection, injection under the skin, or injection into the spinal cord area; transdermal; or via rectal administration, rectal suppository. It acts directly on the central nervous system (CNS) to induce analgesia and alter perception and emotional response to pain. Physical and psychological dependence and tolerance may develop with repeated administration. It can be taken for both acute pain and chronic pain and is frequently used for pain from myocardial infarction, kidney stones, and during Childbirth, labor. Its maximum effect is reached after about 20 minutes when administ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
