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Jacques Mering
Jacques Mering (3 January 1904 – 29 March 1973) was a Lithuanian-born, naturalised French engineer well known in the fields of X-ray crystallography and mineralogy. He earned the degree of Diploma in Electrical Engineering (''Diplôme d'Ingénieur en Génie Electrique'') from École Spéciale des Travaux Publics, and Bachelor of Science (''Licencié de Sciences'') from Faculté des sciences. He served in the French Army for a year during 1931–1932 following conscription. He was director of research at the Centre National de Recherche Scientifique (CNRS; the French National Centre for Scientific Research) in Paris, and subsequently Director of CNRS Laboratory in Orléans. Perhaps, Mering is best remembered for his inspiration and influence on the British chemist Rosalind Franklin, whom he trained in X-ray crystallography. Franklin's X-ray crystallographic image, popularised as Photo 51, became the single piece of clue for the discovery of the double-stranded helical structure o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vilkaviškis
Vilkaviškis () is a city in southwestern Lithuania, the administrative center of the Vilkaviškis District Municipality. It is located northwest from Marijampolė, at the confluence of of and rivers. The city got its name from the Vilkauja River. Initially named ''Vilkaujiškis'' the name was later changed to an easier-to-pronounce form, ''Vilkaviškis''. Until 1941 the city had a large Jewish community, which was killed by the German military and their local collaborators. This is the town from which the 2016 cost-of-living Cauliflower Revolution originated. Names The names of the town as it is called or was formerly called in other languages spoken by non-Lithuanian ethnic groups which have lived or live in or around the town include: pl, Wyłkowyszki; yi, Vilkovishk; german: Wilkowischken. Other spelling variants include ''Vilkavishkis'' and ''Wilkowyszki''. History The town was granted city rights in 1660 by the King of Poland and Grand Duke of Lithuania, John ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Watson
James Dewey Watson (born April 6, 1928) is an American molecular biologist, geneticist, and zoologist. In 1953, he co-authored with Francis Crick the academic paper proposing the double helix structure of the DNA molecule. Watson, Crick and Maurice Wilkins were awarded the 1962 Nobel Prize in Physiology or Medicine "for their discoveries concerning the molecular structure of nucleic acids and its significance for information transfer in living material". In subsequent years, it has been recognized that Watson and his colleagues did not properly attribute colleague Rosalind Franklin for her contributions to the discovery of the double helix structure. Watson earned degrees at the University of Chicago ( BS, 1947) and Indiana University (PhD, 1950). Following a post-doctoral year at the University of Copenhagen with Herman Kalckar and Ole Maaløe, Watson worked at the University of Cambridge's Cavendish Laboratory in England, where he first met his future collaborator Franc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaolinite
Kaolinite ( ) is a clay mineral, with the chemical composition Al2 Si2 O5( OH)4. It is an important industrial mineral. It is a layered silicate mineral, with one tetrahedral sheet of silica () linked through oxygen atoms to one octahedral sheet of alumina () octahedra. Rocks that are rich in kaolinite are known as kaolin () or china clay. Kaolin is occasionally referred to by the antiquated term lithomarge, from the Ancient Greek ''litho-'' and Latin ''marga'', meaning 'stone of marl'. Presently the name lithomarge can refer to a compacted, massive form of kaolin. The name ''kaolin'' is derived from Gaoling (), a Chinese village near Jingdezhen in southeastern China's Jiangxi Province. The name entered English in 1727 from the French version of the word: , following François Xavier d'Entrecolles's reports on the making of Jingdezhen porcelain. Kaolinite has a low shrink–swell capacity and a low cation-exchange capacity (1–15 meq/100 g). It is a soft, earthy, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cellulose
Cellulose is an organic compound with the formula , a polysaccharide consisting of a linear chain of several hundred to many thousands of β(1→4) linked D-glucose units. Cellulose is an important structural component of the primary cell wall of green plants, many forms of algae and the oomycetes. Some species of bacteria secrete it to form biofilms. Cellulose is the most abundant organic polymer on Earth. The cellulose content of cotton fiber is 90%, that of wood is 40–50%, and that of dried hemp is approximately 57%. Cellulose is mainly used to produce paperboard and paper. Smaller quantities are converted into a wide variety of derivative products such as cellophane and rayon. Conversion of cellulose from energy crops into biofuels such as cellulosic ethanol is under development as a renewable fuel source. Cellulose for industrial use is mainly obtained from wood pulp and cotton. Some animals, particularly ruminants and termites, can digest cellulose with the help of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graphite
Graphite () is a crystalline form of the element carbon. It consists of stacked layers of graphene. Graphite occurs naturally and is the most stable form of carbon under standard conditions. Synthetic and natural graphite are consumed on large scale (300 kton/year, in 1989) for uses in pencils, lubricants, and electrodes. Under high pressures and temperatures it converts to diamond. It is a weak conductor of heat and electricity. Types and varieties Natural graphite The principal types of natural graphite, each occurring in different types of ore deposits, are * Crystalline small flakes of graphite (or flake graphite) occurs as isolated, flat, plate-like particles with hexagonal edges if unbroken. When broken the edges can be irregular or angular; * Amorphous graphite: very fine flake graphite is sometimes called amorphous; * Lump graphite (or vein graphite) occurs in fissure veins or fractures and appears as massive platy intergrowths of fibrous or acicular crystalline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon
Carbon () is a chemical element with the symbol C and atomic number 6. It is nonmetallic and tetravalent In chemistry, the valence (US spelling) or valency (British spelling) of an element is the measure of its combining capacity with other atoms when it forms chemical compounds or molecules. Description The combining capacity, or affinity of an ...—its atom making four electrons available to form covalent bond, covalent chemical bonds. It belongs to group 14 of the periodic table. Carbon makes up only about 0.025 percent of Earth's crust. Three Isotopes of carbon, isotopes occur naturally, Carbon-12, C and Carbon-13, C being stable, while Carbon-14, C is a radionuclide, decaying with a half-life of about 5,730 years. Carbon is one of the Timeline of chemical element discoveries#Ancient discoveries, few elements known since antiquity. Carbon is the 15th Abundance of elements in Earth's crust, most abundant element in the Earth's crust, and the Abundance of the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silicates
In chemistry, a silicate is any member of a family of polyatomic anions consisting of silicon and oxygen, usually with the general formula , where . The family includes orthosilicate (), metasilicate (), and pyrosilicate (, ). The name is also used for any salt of such anions, such as sodium metasilicate; or any ester containing the corresponding chemical group, such as tetramethyl orthosilicate. The name "silicate" is sometimes extended to any anions containing silicon, even if they do not fit the general formula or contain other atoms besides oxygen; such as hexafluorosilicate .Most commonly, silicates are encountered as silicate minerals. For diverse manufacturing, technological, and artistic needs, silicates are versatile materials, both natural (such as granite, gravel, and garnet) and artificial (such as Portland cement, ceramics, glass, and waterglass). Structural principles In all silicates, silicon atom occupies the center of an idealized tetrahedron whose corner ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseph Fourier University
Joseph Fourier University (UJF, french: Université Joseph Fourier, also known as Grenoble I) was a French university situated in the city of Grenoble and focused on the fields of sciences, technologies and health. It is now part of the Université Grenoble Alpes. Importance According to the 2009 ARWU, Joseph Fourier University is the sixth best university in France. Joseph Fourier University is also the fourth best university in Engineering & IT nationally and 115th globally in QS World University Rankings. The origins of this scientific university can be traced all the way back to 1811 when the scientist Joseph Fourier established a faculty of science in Grenoble. Nowadays, more than 18,000 undergraduate and graduate students participate to the life of this university. More than 2,000 are international or exchange students. Joseph Fourier University is not only famous for its alumni, but also for its commitment to fundamental as well as applied research and innovation. Part o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grenoble
lat, Gratianopolis , commune status = Prefecture and commune , image = Panorama grenoble.png , image size = , caption = From upper left: Panorama of the city, Grenoble’s cable cars, place Saint-André, jardin de ville, banks of the Isère , arrondissement = Grenoble , canton = Grenoble-1, 2, 3 and 4 , INSEE = 38185 , postal code = 38000, 38100 , mayor = Éric Piolle , term = 2020–2026 , party = EELV , image flag = Flag of Grenoble.svg , image coat of arms = Coat of Arms of Grenoble.svg , intercommunality = Grenoble-Alpes Métropole , coordinates = , elevation min m = 212 , elevation m = 398 , elevation max m = 500 , area km2 = 18.13 , population = , population date = , population footnotes = , urban pop = 451096 , urban area km2 = 358.1 , u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montpellier
Montpellier (, , ; oc, Montpelhièr ) is a city in southern France near the Mediterranean Sea. One of the largest urban centres in the region of Occitania (administrative region), Occitania, Montpellier is the prefecture of the Departments of France, department of Hérault. In 2018, 290,053 people lived in the city, while its Functional area (France), metropolitan area had a population of 787,705.Comparateur de territoire INSEE, retrieved 20 June 2022. The inhabitants are called Montpelliérains. In the Middle Ages, Montpellier was an important city of the Crown of Aragon (and was the birthplace of James I of Aragon, James I), and then of Kingdom of Majorca, Majorca, before its sale to France in 1349. Established in 1220, the University of Montpellier is one of the List of oldest univ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Institution
The Royal Institution of Great Britain (often the Royal Institution, Ri or RI) is an organisation for scientific education and research, based in the City of Westminster. It was founded in 1799 by the leading British scientists of the age, including Henry Cavendish and its first president, George Finch. Its foundational principles were diffusing the knowledge of, and facilitating the general introduction of useful mechanical inventions and improvements, as well as enhancing the application of science to the common purposes of life (including through teaching, courses of philosophical lectures, and experiments). Much of the Institution's initial funding and the initial proposal for its founding were given by the Society for Bettering the Conditions and Improving the Comforts of the Poor, under the guidance of philanthropist Sir Thomas Bernard and American-born British scientist Sir Benjamin Thompson, Count Rumford. Since its founding it has been based at 21 Albemarle Street ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Henry Bragg
Sir William Henry Bragg (2 July 1862 – 12 March 1942) was an English physicist, chemist, mathematician, and active sportsman who uniquelyThis is still a unique accomplishment, because no other parent-child combination has yet shared a Nobel Prize (in any field). In several cases, a parent has won a Nobel Prize, and then years later, the child has won the Nobel Prize for separate research. An example of this is with Marie Curie and her daughter Irène Joliot-Curie, who are the only mother-daughter pair. Several father-son pairs have won two separate Nobel Prizes. shared a Nobel Prize with his son Lawrence Bragg – the 1915 Nobel Prize in Physics: ''"for their services in the analysis of crystal structure by means of X-rays"''. The mineral Braggite is named after him and his son. He was knighted in 1920. Biography Early years Bragg was born at Westward, near Wigton, Cumberland, England, the son of Robert John Bragg, a merchant marine officer and farmer, and his wife Mary nà ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
