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Evans Method
Dennis Frederick Evans (7 March 1928 – 6 November 1990) was an English chemist who made important contributions to nuclear magnetic resonance, magnetochemistry and other aspects of chemistry. Early life Evans was born in Nottingham, England on 28 March 1928. His father George Frederick Evans was a master carpenter and his mother (née Gladys Martha Taylor) was a dressmaker. He was educated at Huntingdon Street Junior School and then won a scholarship to Nottingham High School. In 1946 he entered Oxford with a scholarship to Lincoln College where his tutor was Rex Richards (later Sir Rex Richards FRS). He won the university Gibbs Prize in Chemistry in 1949, and in that year started DPhil work with Richards on calorimetry and the magnetic properties of clathrates containing nitric oxide or oxygen; nine papers resulted from this work. He was an ICI Research Fellow from 1952-5. In 1953-4 he became a postdoctoral research associate at the University of Chicago with Robert S. Mulli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lincoln College, Oxford
Lincoln College (formally, The College of the Blessed Mary and All Saints, Lincoln) is one of the constituent colleges of the University of Oxford, situated on Turl Street in central Oxford. Lincoln was founded in 1427 by Richard Fleming, the then Bishop of Lincoln. Notable alumni include the physician John Radcliffe, the founder of Methodism John Wesley, antibiotics scientists Howard Florey, Edward Abraham, and Norman Heatley, writers Theodor Seuss Geisel ( Dr. Seuss) and David John Moore Cornwell ( John le Carré), the journalist Rachel Maddow, and the current British Prime Minister Rishi Sunak. Mensa was founded at Lincoln College in 1946. Lincoln College has one of the oldest working medieval kitchens in the UK. History Founding Richard Fleming, the then Bishop of Lincoln, founded the College in order to combat the Lollard teachings of John Wyclif. He intended it to be "a little college of true students of theology who would defend the mysteries of Scripture ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lanthanides
The lanthanide () or lanthanoid () series of chemical elements comprises the 15 metallic chemical elements with atomic numbers 57–71, from lanthanum through lutetium. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare-earth elements or rare-earth metals. The informal chemical symbol Ln is used in general discussions of lanthanide chemistry to refer to any lanthanide. All but one of the lanthanides are f-block elements, corresponding to the filling of the 4f electron shell. There is some dispute on whether lanthanum or lutetium is a d-block element, but lutetium is usually considered so by those who study the matter; it is included due to its chemical similarities with the other 14. All lanthanide elements form trivalent cations, Ln3+, whose chemistry is largely determined by the ionic radius, which decreases steadily from lanthanum to lutetium. These elements are called lanthanides because the elements i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inorganic Chemists
In chemistry, an inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds, that is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as ''inorganic chemistry''. Inorganic compounds comprise most of the Earth's crust, although the compositions of the deep mantle remain active areas of investigation. Some simple carbon compounds are often considered inorganic. Examples include the allotropes of carbon (graphite, diamond, buckminsterfullerene, etc.), carbon monoxide, carbon dioxide, carbides, and the following salts of inorganic anions: carbonates, cyanides, cyanates, and thiocyanates. Many of these are normal parts of mostly organic systems, including organisms; describing a chemical as inorganic does not necessarily mean that it does not occur within living things. History Friedrich Wöhler's conversion of ammonium cyanate into urea in 1828 is often cited as the starting point of moder ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
English Chemists
English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national identity, an identity and common culture ** English language in England, a variant of the English language spoken in England * English languages (other) * English studies, the study of English language and literature * ''English'', an Amish term for non-Amish, regardless of ethnicity Individuals * English (surname), a list of notable people with the surname ''English'' * People with the given name ** English McConnell (1882–1928), Irish footballer ** English Fisher (1928–2011), American boxing coach ** English Gardner (b. 1992), American track and field sprinter Places United States * English, Indiana, a town * English, Kentucky, an unincorporated community * English, Brazoria County, Texas, an unincorporated community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Academics Of Imperial College London
An academy (Attic Greek: Ἀκαδήμεια; Koine Greek Ἀκαδημία) is an institution of secondary or tertiary higher learning (and generally also research or honorary membership). The name traces back to Plato's school of philosophy, founded approximately 385 BC at Akademia, a sanctuary of Athena, the goddess of wisdom and skill, north of Athens, Greece. Etymology The word comes from the ''Academy'' in ancient Greece, which derives from the Athenian hero, ''Akademos''. Outside the city walls of Athens, the gymnasium was made famous by Plato as a center of learning. The sacred space, dedicated to the goddess of wisdom, Athena, had formerly been an olive grove, hence the expression "the groves of Academe". In these gardens, the philosopher Plato conversed with followers. Plato developed his sessions into a method of teaching philosophy and in 387 BC, established what is known today as the Old Academy. By extension, ''academia'' has come to mean the accumulation, dev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1990 Deaths
Year 199 ( CXCIX) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was sometimes known as year 952 ''Ab urbe condita''. The denomination 199 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * Mesopotamia is partitioned into two Roman provinces divided by the Euphrates, Mesopotamia and Osroene. * Emperor Septimius Severus lays siege to the city-state Hatra in Central-Mesopotamia, but fails to capture the city despite breaching the walls. * Two new legions, I Parthica and III Parthica, are formed as a permanent garrison. China * Battle of Yijing: Chinese warlord Yuan Shao defeats Gongsun Zan. Korea * Geodeung succeeds Suro of Geumgwan Gaya, as king of the Korean kingdom of Gaya (traditional date). By topic Religion * Pope Zephyrinus succeeds Pope Vic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1928 Births
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chelsea Arts Club
The Chelsea Arts Club is a private members' club at 143 Old Church Street in Chelsea, London with a membership of over 3,800, including artists, sculptors, architects, writers, designers, actors, musicians, photographers, and filmmakers. The club was established on 21 March 1891 (in Chelsea), as a rival to the older Arts Club in Mayfair, on the instigation of the artist James Abbott McNeill Whistler, who had been a (sometimes controversial) member of the older club. During its primary season from September–June the Chelsea Arts Club serves as a host for many functions, from instrumental and choral performances to visual arts exhibitions, literary talks, and weekend artist lunches. Applicants for membership need to be sponsored by two current Members. The club is located in the former Bolton Lodge, a Grade II listed building on the National Heritage List for England. History The Chelsea Arts Club was originally located in rooms at no. 181 King's Road. In 1902, the club mov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London Zoo
London Zoo, also known as ZSL London Zoo or London Zoological Gardens is the world's oldest scientific zoo. It was opened in London on 27 April 1828, and was originally intended to be used as a collection for scientific study. In 1831 or 1832, the animals of the Tower of London menagerie were transferred to the zoo's collection. It was opened to the public in 1847. Today, it houses a collection of 673 species of animals, with 19,289 individuals, making it one of the largest collections in the United Kingdom. The zoo is sometimes called Regent's Park Zoo. It is managed under the aegis of the Zoological Society of London (established in 1826), and is situated at the northern edge of Regent's Park, on the boundary line between the City of Westminster and the borough of Camden (the Regent's Canal runs through it). The Society also has a more spacious site at ZSL Whipsnade Zoo in Bedfordshire to which the larger animals such as elephants and rhinos have been moved. As well as bein ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grignard Reagent
A Grignard reagent or Grignard compound is a chemical compound with the general formula , where X is a halogen and R is an organic functional group, group, normally an alkyl or aryl. Two typical examples are methylmagnesium chloride and phenylmagnesium bromide . They are a subclass of the organomagnesium compounds. Grignard compounds are popular reagents in organic synthesis for creating new carbon-carbon bonds. For example, when reacted with another halogenated compound in the presence of a suitable catalysis, catalyst, they typically yield and the magnesium halide as a byproduct; and the latter is insoluble in the solvents normally used. In this aspect, they are similar to organolithium reagents. Pure Grignard reagents are extremely reactive solids. They are normally handled as solutions in solvents such as diethyl ether or tetrahydrofuran; which are relatively stable as long as water is excluded. In such a medium, a Grignard reagent is invariably present as a coordinati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Organometallic Chemistry
Organometallic chemistry is the study of organometallic compounds, chemical compounds containing at least one chemical bond between a carbon atom of an organic molecule and a metal, including alkali, alkaline earth, and transition metals, and sometimes broadened to include metalloids like boron, silicon, and selenium, as well. Aside from bonds to organyl fragments or molecules, bonds to 'inorganic' carbon, like carbon monoxide (metal carbonyls), cyanide, or carbide, are generally considered to be organometallic as well. Some related compounds such as transition metal hydrides and metal phosphine complexes are often included in discussions of organometallic compounds, though strictly speaking, they are not necessarily organometallic. The related but distinct term " metalorganic compound" refers to metal-containing compounds lacking direct metal-carbon bonds but which contain organic ligands. Metal β-diketonates, alkoxides, dialkylamides, and metal phosphine complexes ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rex Richards (chemist)
Sir Rex Edward Richards (28 October 1922 – 15 July 2019) was a British scientist and academic. He served as Vice-Chancellor of the University of Oxford and as a director of the Leverhulme Trust. Education Richards was educated at Colyton Grammar School, and became the first pupil from the school to attend the University of Oxford when he went up to St John's College, Oxford in January 1942. He was awarded a first class Bachelor of Arts degree in 1945 and a Doctor of Philosophy in 1948. Career After graduating, Richards stayed at the university as a Fellow in Chemistry at Lincoln College from 1947 to 1964. In 1964 he succeeded Sir Cyril Hinshelwood as Dr Lee's Professor of Chemistry at Exeter College.Manuscript papers of British scientists |
