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Einar Hammarsten
Einar Hammarsten (January 4, 1889 in Norrköping - February 16, 1968 in Solna) was a Swedish physician and professor of pharmacy and chemistry at the Karolinska Institute from 1928 to 1957. His area of research was the chemistry of the cell nucleus, in particular nucleic acids. Hammarsten was the first to discover that RNA, at that time called the tetranucleotide of yeast nucleic acid, is present in animal organs, or more specifically in the pancreas. Before Hammarsten's discovery, only guanylic acid had been found there. His doctoral dissertation in 1924 was concerned with purification of DNA, at the time called thymonucleic acid, its ionization and osmotic pressure. Hammarsten was elected to the Royal Swedish Academy of Sciences in 1937. He was a member of the Nobel Committee for Physiology or Medicine, and was himself nominated for a Nobel Prize in Physiology or Medicine in 1941. In 1918, Hammarsten married Greta Norrbin, a clinical chemistry and medical doctor at the Ka ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norrköping
Norrköping (; ) is a city in the province of Östergötland in eastern Sweden and the seat of Norrköping Municipality, Östergötland County, about 160 km southwest of the national capital Stockholm, 40 km east of county seat Linköping and 60 km west of the Södermanland capital of Nyköping. The city has a population of 95,618 inhabitants in 2016, out of a municipal total of 130,050,Folkmängd i Norrköpings kommun den 31 December 2010 making it Sweden's tenth largest city and eighth largest municipality. The city is situated by the mouth of the river , at [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Swedish Academy Of Sciences
The Royal Swedish Academy of Sciences ( sv, Kungliga Vetenskapsakademien) is one of the royal academies of Sweden. Founded on 2 June 1739, it is an independent, non-governmental scientific organization that takes special responsibility for promoting natural sciences and mathematics and strengthening their influence in society, whilst endeavouring to promote the exchange of ideas between various disciplines. The goals of the academy are: * to be a forum where researchers meet across subject boundaries, * to offer a unique environment for research, * to provide support to younger researchers, * to reward outstanding research efforts, * to communicate internationally among scientists, * to advance the case for science within society and to influence research policy priorities * to stimulate interest in mathematics and science in school, and * to disseminate and popularize scientific information in various forms. Every year, the academy awards the Nobel Prizes in physics and chem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swedish Chemists
Swedish or ' may refer to: Anything from or related to Sweden, a country in Northern Europe. Or, specifically: * Swedish language, a North Germanic language spoken primarily in Sweden and Finland ** Swedish alphabet, the official alphabet used by the Swedish language * Swedish people or Swedes, persons with a Swedish ancestral or ethnic identity ** A national or citizen of Sweden, see demographics of Sweden The demography of Sweden is monitored by the ''Statistiska centralbyrån'' (Statistics Sweden). Sweden's population was 10,481,937 (May 2022), making it the 15th-most populous country in Europe after Czech Republic, the 10th-most populous m ... ** Culture of Sweden * Swedish cuisine See also * * Swedish Church (other) * Swedish Institute (other) * Swedish invasion (other) * Swedish Open (other) {{disambig Language and nationality disambiguation pages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1968 Deaths
The year was highlighted by protests and other unrests that occurred worldwide. Events January–February * January 5 – " Prague Spring": Alexander Dubček is chosen as leader of the Communist Party of Czechoslovakia. * January 10 – John Gorton is sworn in as 19th Prime Minister of Australia, taking over from John McEwen after being elected leader of the Liberal Party the previous day, following the disappearance of Harold Holt. Gorton becomes the only Senator to become Prime Minister, though he immediately transfers to the House of Representatives through the 1968 Higgins by-election in Holt's vacant seat. * January 15 – The 1968 Belice earthquake in Sicily kills 380 and injures around 1,000. * January 21 ** Vietnam War: Battle of Khe Sanh – One of the most publicized and controversial battles of the war begins, ending on April 8. ** 1968 Thule Air Base B-52 crash: A U.S. B-52 Stratofortress crashes in Greenland, discharging 4 nuclear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1889 Births
Events January–March * January 1 ** The total solar eclipse of January 1, 1889 is seen over parts of California and Nevada. ** Paiute spiritual leader Wovoka experiences a vision, leading to the start of the Ghost Dance movement in the Dakotas. * January 4 – An Act to Regulate Appointments in the Marine Hospital Service of the United States is signed by President Grover Cleveland. It establishes a Commissioned Corps of officers, as a predecessor to the modern-day U.S. Public Health Service Commissioned Corps. * January 5 – Preston North End F.C. is declared the winner of the inaugural Football League in England. * January 8 – Herman Hollerith receives a patent for his electric tabulating machine in the United States. * January 15 – The Coca-Cola Company is originally incorporated as the Pemberton Medicine Company in Atlanta, Georgia. * January 22 – Columbia Phonograph is formed in Washington, D.C. * January 30 – Rudolf, Crown Prince of Austria a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greta Hammarsten
Greta Hammarsten (née Norrbin) (March 22, 1896 – July 17, 1964) was a Swedish medical doctor and a pioneer of clinical chemistry in Scandinavia. Education and career Hammarsten was born in the Maria Magdalena parish in Stockholm. She left grammar school early and worked for Skandia from 1914 till 1918. From 1919, she started working as an assistant at the Karolinska Institute, where she stayed until 1927. During this time, she also studied microchemical analysis at the University of Graz in 1924 and chemistry at the Carlsberg Laboratory in Copenhagen from 1927 to 1928 and from 1930 to 1931, where she worked for S. P. L. Sørensen and Kaj Linderstrøm-Lang. She enrolled at Lund University in 1930 and became a medical licentiate and doctor of medicine in 1940. Her doctoral thesis was titled ''Eine experimentelle Studie über Calciumoxalat als Steinbildner in den Harnwegen : speziell mit Rücksicht auf die Bedeutung des Magnesiums'', in which she examined the formation of Kidney ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nobel Prize In Physiology Or Medicine
The Nobel Prize in Physiology or Medicine ( sv, Nobelpriset i fysiologi eller medicin) is awarded yearly by the Nobel Assembly at the Karolinska Institute, Nobel Assembly at the Karolinska Institute for outstanding discoveries in physiology or medicine. The Nobel Prize is not a single prize, but five separate prizes that, according to Alfred Nobel's 1895 will, are awarded "to those who, during the preceding year, have conferred the greatest benefit to humankind". Nobel Prizes are awarded in the fields of Nobel Prize in Physics, Physics, Medicine or Physiology, Nobel Prize in Chemistry, Chemistry, Nobel Prize in Literature, Literature, and Nobel Peace Prize, Peace. The Nobel Prize is presented annually on the anniversary of Alfred Nobel's death, 10 December. As of 2023, 115 Nobel Prizes in Physiology or Medicine have been awarded to 227 laureates, 214 men and 13 women. The first one was awarded in 1901 to the German physiologist, Emil von Behring, for his work on blood plasma, s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nobel Committee For Physiology Or Medicine
The Nobel Committee for Physiology or Medicine is the Nobel Committee responsible for proposing laureates for the Nobel Prize for Physiology or Medicine.Nobelprize.org: The Nobel Committee for Physiology or Medicine accessed 2010-06-19 The Nobel Committee for Physiology or Medicine is appointed by the , a body of 50 members at which is formally a separate body not part of the instit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osmotic Pressure
Osmotic pressure is the minimum pressure which needs to be applied to a solution to prevent the inward flow of its pure solvent across a semipermeable membrane. It is also defined as the measure of the tendency of a solution to take in a pure solvent by osmosis. Potential osmotic pressure is the maximum osmotic pressure that could develop in a solution if it were separated from its pure solvent by a semipermeable membrane. Osmosis occurs when two solutions containing different concentrations of solute are separated by a selectively permeable membrane. Solvent molecules pass preferentially through the membrane from the low-concentration solution to the solution with higher solute concentration. The transfer of solvent molecules will continue until equilibrium is attained. Theory and measurement Jacobus van 't Hoff found a quantitative relationship between osmotic pressure and solute concentration, expressed in the following equation: :\Pi = icRT where \Pi is osmotic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solna
Solna Municipality ( sv, Solna kommun or , ) is a municipality in Stockholm County in Sweden, located just north of Stockholm City Centre. Its seat is located in the town of Solna, which is a part of the Stockholm urban area. Solna is one of the richest municipalities in Sweden. The municipality is a part of Metropolitan Stockholm. None of the area is considered rural, which is unusual for Swedish municipalities, which normally are of mixed rural/urban character. Solna is the third smallest municipality in Sweden in terms of area. Solna borders Stockholm Municipality to the south, southeast and northwest; to Sundbyberg Municipality to the west; to Sollentuna Municipality to the north; and to Danderyd Municipality to the northeast. The boundary with Danderyd Municipality is delineated by the Stocksundet strait. There are two parishes in Solna Municipality: Råsunda (population 29,677) and Solna (population 28,317). Solna Parish once included parts of present-day City of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ionization
Ionization, or Ionisation is the process by which an atom or a molecule acquires a negative or positive Electric charge, charge by gaining or losing electrons, often in conjunction with other chemical changes. The resulting electrically charged atom or molecule is called an ion. Ionization can result from the loss of an electron after collisions with subatomic particles, collisions with other atoms, molecules and ions, or through the interaction with electromagnetic radiation. Heterolytic bond cleavage and heterolytic substitution reactions can result in the formation of ion pairs. Ionization can occur through radioactive decay by the internal conversion process, in which an excited nucleus transfers its energy to one of the inner-shell electrons causing it to be ejected. Uses Everyday examples of gas ionization are such as within a fluorescent lamp or other electrical discharge lamps. It is also used in radiation detectors such as the Geiger-Müller counter or the ionization cham ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
