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Martin Freund
Martin Freund (August 13, 1863 in Nysa, Poland – 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 became full p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martin Freund Ca
Martin may refer to: Places * Martin City (other) * Martin County (other) * Martin Township (other) Antarctica * Martin Peninsula, Marie Byrd Land * Port Martin, Adelie Land * Point Martin, South Orkney Islands Australia * Martin, Western Australia * Martin Place, Sydney Caribbean * Martin, Saint-Jean-du-Sud, Haiti, a village in the Sud Department of Haiti Europe * Martin, Croatia, a village in Slavonia, Croatia * Martin, Slovakia, a city * Martín del Río, Aragón, Spain * Martin (Val Poschiavo), Switzerland England * Martin, Hampshire * Martin, Kent * Martin, East Lindsey, Lincolnshire, hamlet and former parish in East Lindsey district * Martin, North Kesteven, village and parish in Lincolnshire in North Kesteven district * Martin Hussingtree, Worcestershire * Martin Mere, a lake in Lancashire ** WWT Martin Mere, a wetland nature reserve that includes the lake and surrounding areas * Martin Mill, Kent North America Canada * Rural Municipality of M ... [...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 AG, 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 competition 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1920 Deaths
Nineteen or 19 may refer to: * 19 (number), the natural number following 18 and preceding 20 * one of the years 19 BC, AD 19, 1919, 2019 Films * ''19'' (film), a 2001 Japanese film * ''Nineteen'' (film), a 1987 science fiction film Music * 19 (band), a Japanese pop music duo Albums * ''19'' (Adele album), 2008 * ''19'', a 2003 album by Alsou * ''19'', a 2006 album by Evan Yo * ''19'', a 2018 album by MHD * ''19'', one half of the double album ''63/19'' by Kool A.D. * ''Number Nineteen'', a 1971 album by American jazz pianist Mal Waldron * ''XIX'' (EP), a 2019 EP by 1the9 Songs * "19" (song), a 1985 song by British musician Paul Hardcastle. * "Nineteen", a song by Bad4Good from the 1992 album ''Refugee'' * "Nineteen", a song by Karma to Burn from the 2001 album ''Almost Heathen''. * "Nineteen" (song), a 2007 song by American singer Billy Ray Cyrus. * "Nineteen", a song by Tegan and Sara from the 2007 album '' The Con''. * "XIX" (song), a 2014 song by Slipkno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1863 Births
Events January–March * 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 an official war goal. It proclaims 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 Union armies advance. * January 2 – Lucius Tar Painting Master Company (''Teerfarbenfabrik Meirter Lucius''), predecessor of Hoechst, as a worldwide chemical manufacturing brand, founded in a suburb of Frankfurt am Main, Germany. * January 4 – The New Apostolic Church, a Christian and chiliastic church, is established in Hamburg, Germany. * January 7 – In the Swiss canton of Ticino, the village of Bedretto is partly destroyed and 29 killed, by an avalanche. * January 8 ** The Yorkshire County Cricket Club is founded at the Adelphi Hotel, in Sheffield, England. ** American Civil War – ... [...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 1945-1949. 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 References {{Reflist External links Chemiker Zeitung 1885, 1887- in PDF format with OCR. Technical University of Lodz Digital Library Technical may refer to: * Techni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxycodone
Oxycodone, sold under various brand names such as Roxicodone and OxyContin (which is the extended release form), is a strong, semi-synthetic opioid used medically for treatment of moderate to severe pain. It is highly addictive and 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. 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, dizziness, itching, X ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opioid
Opioids are substances that act on opioid receptors to produce morphine-like effects. Medically they are primarily used for pain relief, including anesthesia. Other medical uses include suppression of diarrhea, replacement therapy for opioid use disorder, reversing opioid overdose, and suppressing cough. Extremely potent opioids such as carfentanil are approved only for veterinary use. Opioids are also frequently used non-medically for their euphoric effects or to prevent withdrawal. Opioids can cause death and have been used for executions in the United States. Side effects of opioids may include itchiness, sedation, nausea, respiratory depression, constipation, and euphoria. Long-term use can cause tolerance, meaning that increased doses are required to achieve the same effect, and physical dependence, meaning that abruptly discontinuing the drug leads to unpleasant withdrawal symptoms. The euphoria attracts recreational use, and frequent, escalating recreational use of ... [...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. In 1942, he was deported to the Lodz ghetto, where he died shortly after. 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 synthes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aromatic
In chemistry, aromaticity is a chemical property of cyclic ( ring-shaped), ''typically'' planar (flat) molecular structures with pi bonds in resonance (those containing delocalized electrons) that gives increased stability compared to saturated compounds having single bonds, and other geometric or connective non-cyclic arrangements with the same set of atoms. Aromatic rings are very stable and do not break apart easily. Organic compounds that are not aromatic are classified as aliphatic compounds—they might be cyclic, but only aromatic rings have enhanced stability. The term ''aromaticity'' with this meaning is historically related to the concept of having an aroma, but is a distinct property from that meaning. Since the most common aromatic compounds are derivatives of benzene (an aromatic hydrocarbon common in petroleum and its distillates), the word ''aromatic'' occasionally refers informally to benzene derivatives, and so it was first defined. Nevertheless, many ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malonic Acid
Malonic acid (IUPAC systematic name: propanedioic 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. Structure and preparation The structure has been determined by X-ray crystallography and extensive property data including for condensed phase thermochemistry are available from the National Institute of Standards and Technology. A classical preparation of malonic acid starts from chlor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morphine
Morphine is a strong opiate that is found naturally in opium, a dark brown resin in poppies (''Papaver somniferum''). It is mainly used as a analgesic, pain medication, and is also commonly used recreational drug, recreationally, or to make other illicit drug, illicit opioids. There are numerous methods used to administer morphine: oral; sublingual administration, sublingual; via inhalation; intramuscular, injection into a muscle; by Subcutaneous injection, injection under the skin; intravenously; Intrathecally, injection into the space around the spinal cord; 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 Ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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