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Milda Dorethea Prytz
Milda Dorethea Prytz (April 22, 1891 – October 22, 1977) was a Norwegian chemist. She was a lecturer in chemistry at the University of Oslo, and is known for writing two popular textbooks on quantitative analysis and inorganic chemistry. Early life and education Prytz was born in Leith, daughter of priest Anton Jakhelln Prytz and Milda Dorothea Olsen, and sister of goldsmith Eiler Hagerup Krog Prytz Jr. and Fascist politician Frederik Prytz. She grew up in Bergen, until she moved with her parents to Gloppen in 1904. She attended Bergen Cathedral School from 1908 to 1910. She was educated at the University of London and gained her doctorate from the University of Oslo. Her thesis from 1925 is titled '. Professional life Prytz was a scientific assistant and amanuensis at the University of Oslo for many years (1918–1948), and docent in chemistry 1948–1957. She published regularly in scientific journals on the polarographic analysis of hydroxamic acids and electro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anton Jakhelln Prytz
Anton Frederik Winter Jakhelln Prytz (14 February 1878 – 19 February 1945) was a Norwegian politician. Prytz was born in Oslo. He was minister of finance in the Nasjonal Samling, NS Quisling regime, government of Vidkun Quisling 1942–1945. Prytz died from cancer before the end of war. Early life Frederik Prytz was the son of priesta Frederik Prytz (1853–1937), Frederik Prytz (1853–1937), Oslo, and his spouse Milda Dorothea Olsen from Nordland. Goldsmith, architect and Minister (government), minister Torolf Prytz, was Frederik Prytz's uncle. The Prytz family had connections to Nordland came from bergverks people in Røros Municipality, Røros. He was the brother of Milda Dorothea Prytz. Russia and the Revolution Frederik Prytz became a close friend of Vidkun Quisling then military attaché during his stay in Russia after the Russian Revolution in 1917, when they were both stationed at the Norwegian legation in St. Petersburg, Petrograd. Prytz was trade attaché ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hvem Er Hvem?
''Hvem er hvem?'' () was a Norwegian book series, presenting facts about notable persons from Norway. The first edition was issued in 1912, and the 14th edition came in 1994. From 1938, the plan was to publish such a book every three years, but the Second World War made that impossible. At the time, such a book was published annually in Denmark and every two years in Sweden. In the 2008 edition, edited by Knut Olav Åmås, one thousand persons were selected for presentation. About one third of the articles are longer, signed biographies, while the rest have a shorter, more encyclopedic format. The latest edition was edited by Knut Olav Åmås and narrowed down to 1,000 people. This differs from the older ones in style in that the articles are in a more journalistic style with personal characteristics, in addition to the purely biographical year information. About 340 of the 1,000 biographies also have signed authors. Edition history *1912 (First edition, edited by Chr. Brinchm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norwegian Chemists
Norwegian, Norwayan, or Norsk may refer to: *Something of, from, or related to Norway, a country in northwestern Europe *Norwegians, both a nation and an ethnic group native to Norway *Demographics of Norway *Norwegian language, including the two official written forms: **Bokmål, literally "book language", used by 85–90% of the population of Norway **Nynorsk, literally "New Norwegian", used by 10–15% of the population of Norway *Norwegian Sea Norwegian or may also refer to: Norwegian *Norwegian Air Shuttle, an airline, trading as Norwegian **Norwegian Long Haul, a defunct subsidiary of Norwegian Air Shuttle, flying long-haul flights * Norwegian Air Lines, a former airline, merged with Scandinavian Airlines in 1951 *Norwegian coupling, used for narrow-gauge railways *Norwegian Cruise Line, a cruise line *Norwegian Elkhound, a canine breed. * Norwegian Forest cat, a domestic feline breed *Norwegian Red, a breed of dairy cattle *Norwegian Township, Pennsylvania, USA Norsk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1977 Deaths
Events January * January 8 – Three bombs explode in Moscow within 37 minutes, killing seven. The bombings are attributed to an Armenia Armenia, officially the Republic of Armenia, is a landlocked country in the Armenian Highlands of West Asia. It is a part of the Caucasus region and is bordered by Turkey to the west, Georgia (country), Georgia to the north and Azerbaijan to ...n separatist group. * January 10 – Mount Nyiragongo erupts in eastern Zaire (now the Democratic Republic of the Congo). * January 17 – 49 marines from the and are killed as a result of a collision in Barcelona harbour, Spain. * January 18 ** Scientists identify a previously unknown Bacteria, bacterium as the cause of the mysterious Legionnaires' disease. ** Australia's worst Granville rail disaster, railway disaster at Granville, a suburb of Sydney, leaves 83 people dead. ** SFR Yugoslavia Prime minister Džemal Bijedić, his wife and 6 others are killed in a plane crash in Bosnia and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1891 Births
Events January * January 1 ** A strike of 500 Hungarian steel workers occurs; 3,000 men are out of work as a consequence. **Germany takes formal possession of its new African territories. * January 4 – The Earl of Zetland issues a declaration regarding the famine in the western counties of Ireland. * January 5 **The Australian shearers' strike, that leads indirectly to the foundation of the Australian Labor Party, begins. **A fight between the United States and Lakotas breaks out near Pine Ridge agency. **A fight between railway strikers and police breaks out at Motherwell, Scotland. * January 7 ** General Miles' forces surround the Lakota in the Pine Ridge Reservation. ** The Inter-American Monetary Commission meets in Washington DC. * January 9 – The great shoe strike in Rochester, New York is called off. * January 10 – in France, the Irish Nationalist leaders hold a conference at Boulogne. The French government promptly takes loan. * Jan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cation
An ion () is an atom or molecule with a net electrical charge. The charge of an electron is considered to be negative by convention and this charge is equal and opposite to the charge of a proton, which is considered to be positive by convention. The net charge of an ion is not zero because its total number of electrons is unequal to its total number of protons. A cation is a positively charged ion with fewer electrons than protons (e.g. K+ ( potassium ion)) while an anion is a negatively charged ion with more electrons than protons (e.g. Cl− ( chloride ion) and OH− ( hydroxide ion)). Opposite electric charges are pulled towards one another by electrostatic force, so cations and anions attract each other and readily form ionic compounds. Ions consisting of only a single atom are termed ''monatomic ions'', ''atomic ions'' or ''simple ions'', while ions consisting of two or more atoms are termed polyatomic ions or ''molecular ions''. If only a + or − is present, it indic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrolytic Reduction
In chemistry and manufacturing, electrolysis is a technique that uses direct electric current (DC) to drive an otherwise non-spontaneous chemical reaction. Electrolysis is commercially important as a stage in the separation of elements from naturally occurring sources such as ores using an electrolytic cell. The voltage that is needed for electrolysis to occur is called the decomposition potential. The word "lysis" means to separate or break, so in terms, electrolysis would mean "breakdown via electricity." Etymology The word "electrolysis" was introduced by Michael Faraday in 1834, using the Greek words "amber", which since the 17th century was associated with electrical phenomena, and ' meaning "dissolution". Nevertheless, electrolysis, as a tool to study chemical reactions and obtain pure elements, precedes the coinage of the term and formal description by Faraday. History In the early nineteenth century, William Nicholson and Anthony Carlisle sought to further Volta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroxamic Acid
In organic chemistry, hydroxamic acids are a class of organic compounds having a general formula bearing the functional group , where R and R' are typically organyl groups (e.g., alkyl or aryl) or hydrogen. They are amides () wherein the nitrogen atom has a hydroxyl () substituent. They are often used as metal chelators. Common example of hydroxamic acid is aceto-''N''-methylhydroxamic acid (). Some uncommon examples of hydroxamic acids are formo-''N''-chlorohydroxamic acid () and chloroformo-''N''-methylhydroxamic acid (). Synthesis and reactions Hydroxamic acids are usually prepared from either esters or acid chlorides by a reaction with hydroxylamine salts. For the synthesis of benzohydroxamic acid ( or , where Ph is phenyl group), the overall equation is: : Hydroxamic acids can also be synthesized from aldehydes and ''N''-sulfonylhydroxylamine via the Angeli-Rimini reaction. Alternatively, molybdenum oxide diperoxide oxidizes trimethylsilated amides to hydroxamic acid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polarographic Analysis
Voltammetry is a category of electroanalytical methods used in analytical chemistry and various industrial processes. In voltammetry, information about an analyte is obtained by measuring the current as the potential is varied. The analytical data for a voltammetric experiment comes in the form of a voltammogram, which plots the current produced by the analyte versus the potential of the working electrode. Theory Voltammetry is the study of current as a function of applied potential. Voltammetric methods involve electrochemical cells, and investigate the reactions occurring at electrode/electrolyte interfaces. The reactivity of analytes in these half-cells is used to determine their concentration. It is considered a dynamic electrochemical method as the applied potential is varied over time and the corresponding changes in current are measured. Most experiments control the potential (volts) of an electrode in contact with the analyte while measuring the resulting current (ampere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amanuensis
An amanuensis ( ) ( ) or scribe is a person employed to write or type what another dictates or to copy what has been written by another. It may also be a person who signs a document on behalf of another under the latter's authority. In some academic contexts, an amanuensis can assist an injured or disabled person in taking written examinations. Eric Fenby acted as such in assisting the blind and paralysed composer Frederick Delius in writing down the notes he dictated. History In ancient Rome, an amanuensis (Latin ''āmanuēnsis'', “secretary”, from ''ab-'', “from” + ''manus'', “hand”) was a slave or freedperson who provided literary and secretarial services such as taking dictation and perhaps assisting in composition. ''Amanuenses'' were typically Greek, might be either male or female, and were among the higher-status slaves in ancient Rome who were considered to add value to their masters' lives rather than serving as mere instruments of production. Literary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frederik Prytz
Anton Frederik Winter Jakhelln Prytz (14 February 1878 – 19 February 1945) was a Norwegian politician. Prytz was born in Oslo. He was minister of finance in the NS government of Vidkun Quisling 1942–1945. Prytz died from cancer before the end of war. Early life Frederik Prytz was the son of priesta Frederik Prytz (1853–1937), Oslo, and his spouse Milda Dorothea Olsen from Nordland. Goldsmith, architect and minister Torolf Prytz, was Frederik Prytz's uncle. The Prytz family had connections to Nordland came from bergverks people in Røros. He was the brother of Milda Dorothea Prytz. Russia and the Revolution Frederik Prytz became a close friend of Vidkun Quisling then military attaché during his stay in Russia after the Russian Revolution in 1917, when they were both stationed at the Norwegian legation in Petrograd. Prytz was trade attaché at the legation and became chargé d'affaires in Petrograd when the Norwegian envoy returned home.After the revolut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
