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In mathematics , a natural number in a given number base is a p {\displaystyle p} - Kaprekar number if the representation of its square in that base can be split into two parts, where the second part has p {\displaystyle p} digits, that add up to the original number. For example, in base 10 , 45 is a 2-Kaprekar number,... | https://en.wikipedia.org/wiki/Kaprekar_number |
Kapteyn series is a series expansion of analytic functions on a domain in terms of the Bessel function of the first kind . Kapteyn series are named after Willem Kapteyn , who first studied such series in 1893. [ 1 ] [ 2 ] Let f {\displaystyle f} be a function analytic on the domain
with a < 1 {\displaystyle a<1} . The... | https://en.wikipedia.org/wiki/Kapteyn_series |
The Kapustinskii equation calculates the lattice energy U L for an ionic crystal , which is experimentally difficult to determine. It is named after Anatoli Fedorovich Kapustinskii who published the formula in 1956. [ 1 ]
The calculated lattice energy gives a good estimation for the Born–Landé equation; the real value... | https://en.wikipedia.org/wiki/Kapustinskii_equation |
KarTrak , sometimes KarTrak ACI ( Automatic Car Identification ) or just ACI was a colored barcode system designed to automatically identify railcars and other rolling stock . KarTrak was made a requirement in North America in 1967, but technical problems led to the abandonment of the system by around 1977.
Railroads ... | https://en.wikipedia.org/wiki/KarTrak |
The Karachi Institute of Power Engineering , commonly known as KINPOE , [ 1 ] is a post-graduate applied science school of the Institute of Engineering and Applied Sciences . [ 2 ] Established by the Pakistan Atomic Energy Commission (PAEC) in 1993 with cooperation with the NED University of Engineering and Technology ... | https://en.wikipedia.org/wiki/Karachi_Institute_of_Power_Engineering |
In mathematics , Karamata's inequality , [ 1 ] named after Jovan Karamata , [ 2 ] also known as the majorization inequality , is a theorem in elementary algebra for convex and concave real-valued functions, defined on an interval of the real line. It generalizes the discrete form of Jensen's inequality , and generalize... | https://en.wikipedia.org/wiki/Karamata's_inequality |
The Karatmeter is a scientific instrument which uses X-rays to give an exact reading of the purity of gold . The Karatmeter is also referred to as a X-Ray fluorescence (XRF) spectrometer. Due to its very high precision and fast result, X-ray analysis has been adopted by international agencies in India as part of the ce... | https://en.wikipedia.org/wiki/Karatmeter |
In Indian astronomy, a karaṇa is a half of a tithi . It is the duration of time in which the difference of the longitudes of the Sun and the Moon is increased by 6 degrees. [ 1 ] [ 2 ] A lunar month has 30 tithi -s and so the number of karaṇa -s in a lunar month is 60. These sixty karaṇa -s are not individually named. ... | https://en.wikipedia.org/wiki/Karaṇa_(pañcāṅga) |
In mathematics , the Kardar–Parisi–Zhang (KPZ) equation is a non-linear stochastic partial differential equation , introduced by Mehran Kardar , Giorgio Parisi , and Yi-Cheng Zhang in 1986. [ 1 ] [ 2 ] It describes the temporal change of a height field h ( x → , t ) {\displaystyle h({\vec {x}},t)} with spatial coordina... | https://en.wikipedia.org/wiki/Kardar–Parisi–Zhang_equation |
Karen K. Hsiao Ashe is a professor at the Department of Neurology and Neuroscience at the University of Minnesota (UMN) Medical School , where she holds the Edmund Wallace and Anne Marie Tulloch Chairs in Neurology and Neuroscience. [ 2 ] She is the founding director of the N. Bud Grossman Center for Memory Research an... | https://en.wikipedia.org/wiki/Karen_Ashe |
Karen Chan is an associate professor at the Technical University of Denmark . [ 2 ] She is a Canadian and French physicist most notable for her work on catalysis , electrocatalysis, and electrochemical reduction of carbon dioxide .
Chan earned her B.Sc. in Chemical Physics in 2007 and her PhD in Chemistry in 2013 from... | https://en.wikipedia.org/wiki/Karen_Chan |
Joseph Black Award (2013)
Top 50 Women in Analytical Science (2016)
Coblentz Society Craver Award (2016)
The Analytical Scientist Top 10 Spectroscopists (2017)
Karen Jane Faulds FRSE is a Scottish academic and Professor of Analytical Chemistry at the University of Strathclyde . [ 1 ] [ 2 ] [ 3 ] She develops surfac... | https://en.wikipedia.org/wiki/Karen_Faulds |
Karen Hao is an American journalist. Currently a freelancer for publications like The Atlantic and previously a foreign correspondent based in Hong Kong for The Wall Street Journal and senior artificial intelligence editor at the MIT Technology Review , she is best known for her coverage on AI research, technology ethi... | https://en.wikipedia.org/wiki/Karen_Hao |
The Karen Harvey Prize is awarded by the American Astronomical Society 's Solar Physics Division in recognition for a significant contribution to the study of the Sun early in a person's professional career.
Past winners are: [ 1 ]
This science awards article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Karen_Harvey_Prize |
Karen Helen Wiltshire (born 1962) is an Irish environmental scientist . She is professor for shelf-ecosystems and was one of the vice directors of Alfred Wegener Institute for Polar and Marine Research (AWI). [ 1 ]
Born in Dublin , Wiltshire studied at Trinity College Dublin and graduated with a master's degree in env... | https://en.wikipedia.org/wiki/Karen_Helen_Wiltshire |
Karen Dale Williams Morse is a inorganic chemist. She was president of Western Washington University from 1993 until 2008, and was named the Bowman Distinguished Professor in 2014. She is an elected fellow of the American Association for the Advancement of Science .
Morse has a B.A. from Denison University (1962), and... | https://en.wikipedia.org/wiki/Karen_Morse_(chemist) |
Karin Erdmann (born 1948) is a German mathematician specializing in the areas of algebra known as representation theory (especially modular representation theory ) and homological algebra (especially Hochschild cohomology ). She is notable for her work in modular representation theory which has been cited over 1500 ti... | https://en.wikipedia.org/wiki/Karin_Erdmann |
Karin Lochte (born 20 September 1952) is a German oceanographer , researcher, and climate change specialist. [ 1 ] [ 2 ] She was director of German Polar Research Alfred Wegener Institute from 2007 to 2017 as well as chairman of the management committee of Jacobs University Bremen . [ 2 ]
Lochte was born in Hanover . ... | https://en.wikipedia.org/wiki/Karin_Lochte |
Karin Ingegerd Öberg (born August 27, 1982) is a Swedish astrochemist . [ 1 ] She is a Professor of Astronomy at Harvard University and leader of the Öberg Astrochemistry Group at the Center for Astrophysics | Harvard & Smithsonian . [ 2 ] Her research concerns star formation , planet formation , and stellar evolution ... | https://en.wikipedia.org/wiki/Karin_Öberg |
Karl A. Smith is a metallurgical engineer, academic and author. He is an emeritus Cooperative Learning Professor of Engineering Education at Purdue University 's School of Engineering Education, [ 1 ] as well as an emeritus Professor of Civil, Environmental, and Geo-Engineering , Morse-Alumni Distinguished University T... | https://en.wikipedia.org/wiki/Karl_A._Smith |
Karl Andreas Hofmann (2 April 1870 – 15 October 1940) was a German inorganic chemist. [ 1 ] He is best known for his discovery of a family of clathrates which consist of a 2-D metal cyanide sheet, with every second metal also bound axially to two other ligands. These materials have been named ' Hofmann clathrates ' in ... | https://en.wikipedia.org/wiki/Karl_Andreas_Hofmann |
Karl Barry Sharpless (born April 28, 1941) is an American stereochemist . He is a two-time Nobel laureate in chemistry , known for his work on stereoselective reactions and click chemistry .
Sharpless was awarded half of the 2001 Nobel Prize in Chemistry "for his work on chirally catalysed oxidation reactions ", and o... | https://en.wikipedia.org/wiki/Karl_Barry_Sharpless |
In analytical chemistry , Karl Fischer titration is a classic titration method that uses coulometric or volumetric titration to determine trace amounts of water in a sample. It was invented in 1935 by the German chemist Karl Fischer . [ 1 ] [ 2 ] Today, the titration is done with an automated Karl Fischer titrator.
Th... | https://en.wikipedia.org/wiki/Karl_Fischer_titration |
Karl Küpfmüller (6 October 1897 – 26 December 1977) was a German electrical engineer, who was prolific in the areas of communications technology, measurement and control engineering, acoustics, communication theory, and theoretical electro-technology.
Küpfmüller was born in Nuremberg , where he studied at the Ohm-Poly... | https://en.wikipedia.org/wiki/Karl_Küpfmüller |
Karl Spencer Lashley (June 7, 1890 – August 7, 1958) was an American psychologist and behaviorist remembered for his contributions to the study of learning and memory. A Review of General Psychology survey, published in 2002, ranked Lashley as the 61st most cited psychologist of the 20th century. [ 1 ] [ 2 ]
Lashley w... | https://en.wikipedia.org/wiki/Karl_Lashley |
Sir Karl Raimund Popper CH FRS FBA [ 4 ] (28 July 1902 – 17 September 1994) was an Austrian–British [ 5 ] philosopher, academic and social commentator . [ 6 ] [ 7 ] [ 8 ] One of the 20th century's most influential philosophers of science , [ 9 ] [ 10 ] [ 11 ] Popper is known for his rejection of the classical inductivi... | https://en.wikipedia.org/wiki/Karl_Popper |
Karl Schlögl (October 5, 1924 – May 4, 2007) was professor of organic chemistry at the University of Vienna and secretary as well as vice-president of the Austrian Academy of Sciences .
Schlögl was born October 5, 1924, in Vienna . Schlögl's first contact with organic chemistry happened during his middle-school educat... | https://en.wikipedia.org/wiki/Karl_Schlögl |
The Karl Schwarzschild Medal , named after the astrophysicist Karl Schwarzschild , is an award presented by the Astronomische Gesellschaft (German Astronomical Society) to eminent astronomers and astrophysicists. [ 1 ] [ 2 ]
Source: German Astronomical Society | https://en.wikipedia.org/wiki/Karl_Schwarzschild_Medal |
Karl Söllner (9 January 1903 – 14 June 1986) was an Austrian-American chemist, primarily active in the field of physical chemistry and biophysics .
Söllner was the son of lawyer Anton Maria Söllner and his wife Julie ( née Karplus). He grew up in Vienna and began studying chemistry and philosophy at the University of ... | https://en.wikipedia.org/wiki/Karl_Söllner |
In combustion , the Karlovitz number is defined as the ratio of chemical time scale t F {\displaystyle t_{F}} to Kolmogorov time scale t η {\displaystyle t_{\eta }} , named after Béla Karlovitz . [ 1 ] [ 2 ] [ 3 ] The number reads as
In premixed turbulent combustion, the chemical time scale can be defined as t F = D T... | https://en.wikipedia.org/wiki/Karlovitz_number |
The Karlqvist gap or Karlqvist Field is an electromagnetic phenomenon discovered in 1953 by the Swedish engineer Olle Karlqvist (1922-1976), [ 1 ] which is important in magnetic storage for computers. [ 2 ]
Karlqvist discovered the phenomenon while designing a ferromagnetic surface layer to the magnetic drum memory fo... | https://en.wikipedia.org/wiki/Karlqvist_gap |
Karlsruhe Accurate Arithmetic ( KAA ), or Karlsruhe Accurate Arithmetic Approach ( KAAA ), augments conventional floating-point arithmetic with good error behaviour with new operations to calculate scalar products with a single rounding error. [ 1 ]
The foundations for KAA were developed at the University of Karlsruhe... | https://en.wikipedia.org/wiki/Karlsruhe_Accurate_Arithmetic |
The Karlsruhe Congress was an international meeting of chemists organized by August Kekulé and held in Karlsruhe , Germany from 3 to 5 September 1860. It was the first international conference of chemistry with 140 participants.
The conference is known for the adoption of atomic weights in chemistry motivated by the p... | https://en.wikipedia.org/wiki/Karlsruhe_Congress |
In mathematics , the Karoubi conjecture is a conjecture by Max Karoubi ( 1979 ) that the algebraic and topological K-theories coincide on C* algebras spatially tensored with the algebra of compact operators. It was proved by Andrei Suslin and Mariusz Wodzicki ( 1990 , theorem 6, 1992 ).
This abstract algebra -related... | https://en.wikipedia.org/wiki/Karoubi_conjecture |
The Karplus equation , named after Martin Karplus , describes the correlation between 3 J-coupling constants and dihedral torsion angles in nuclear magnetic resonance spectroscopy : [ 2 ]
where J is the 3 J coupling constant, ϕ {\displaystyle \phi } is the dihedral angle , and A , B , and C are empirically derived par... | https://en.wikipedia.org/wiki/Karplus_equation |
The Karrick process is a low-temperature carbonization (LTC) and pyrolysis process of carbonaceous materials. Although primarily meant for coal carbonization , it also could be used for processing of oil shale , lignite or any carbonaceous materials. These are heated at 450 °C (800 °F) to 700 °C (1,300 °F) in the absen... | https://en.wikipedia.org/wiki/Karrick_process |
Karsten Meyer (born 17 May 1968 in Herne , Germany ) is a German inorganic chemist and Chair of Inorganic and General Chemistry at the Friedrich-Alexander University of Erlangen-Nürnberg (FAU). [ 1 ] His research involves the coordination chemistry of transition metals as well as uranium coordination chemistry, small m... | https://en.wikipedia.org/wiki/Karsten_Meyer_(chemist) |
Karyogamy is the final step in the process of fusing together two haploid eukaryotic cells, and refers specifically to the fusion of the two nuclei . Before karyogamy, each haploid cell has one complete copy of the organism's genome . In order for karyogamy to occur, the cell membrane and cytoplasm of each cell must fu... | https://en.wikipedia.org/wiki/Karyogamy |
Karyoklepty ( / ˌ k æ r i ˈ oʊ k l ɛ p t i / KARR -ee- OH -klep-tee ) is a strategy for cellular evolution , whereby a predator cell appropriates the nucleus of a cell from another organism to supplement its own biochemical capabilities. [ 1 ]
In the related process of kleptoplasty , the predator sequesters plastids (... | https://en.wikipedia.org/wiki/Karyoklepty |
Karyolysis (from Greek κάρυον karyon— kernel, seed, or nucleus ), and λύσις lysis from λύειν lyein , "to separate") is the complete dissolution of the chromatin of a dying cell due to the enzymatic degradation by endonucleases . The whole cell will eventually stain uniformly with eosin after karyolysis. It is usually a... | https://en.wikipedia.org/wiki/Karyolysis |
The karyorelictid nuclear code (translation table 27) is a genetic code used by the nuclear genome of the Karyorelictea ciliate Parduczia sp. [ 1 ] This code, along with translation tables 28 and 31, is remarkable in that every one of the 64 possible codons can be a sense codon. Translation termination probably relies ... | https://en.wikipedia.org/wiki/Karyorelict_nuclear_code |
Karyorrhexis (from Greek κάρυον karyon 'kernel, seed, nucleus' and ῥῆξις rhexis 'bursting') is the destructive fragmentation of the nucleus of a dying cell [ 1 ] whereby its chromatin is distributed irregularly throughout the cytoplasm. [ 2 ] It is usually preceded by pyknosis and can occur as a result of either progra... | https://en.wikipedia.org/wiki/Karyorrhexis |
A karyosome or karyosphere is a dense bundle of chromatin inside the nucleus of a cell within an organism. These bundles are joined together in a limited nuclear volume, but this only happens when the cell is not undergoing meiotic division . Research suggests that within its bundles there is an absence of RNA synthesi... | https://en.wikipedia.org/wiki/Karyosome |
A karyotype is the general appearance of the complete set of chromosomes in the cells of a species or in an individual organism, mainly including their sizes, numbers, and shapes. [ 1 ] [ 2 ] Karyotyping is the process by which a karyotype is discerned by determining the chromosome complement of an individual, includin... | https://en.wikipedia.org/wiki/Karyotype |
Kasha's rule is a principle in the photochemistry of electronically excited molecules. The rule states that photon emission ( fluorescence or phosphorescence ) occurs in appreciable yield only from the lowest excited state of a given multiplicity . It is named after American spectroscopist Michael Kasha , who proposed ... | https://en.wikipedia.org/wiki/Kasha's_rule |
Kashinhou (化審法), short for 化学物質の審査及び製造等の規制に関する法律 ( Kagaku Busshitsu no Shinsa Oyobi Seizoutou no Kisei ni Kansuru Houritsu ) , ("Law Concerning the Examination and Regulation of Manufacture, etc. of Chemical Substances") (Showa Act No. 117, 昭和48年法律第117号) is the current Chemicals and dangerous substances regulation law ... | https://en.wikipedia.org/wiki/Kashinhou |
The Kasner metric (developed by and named for the American mathematician Edward Kasner in 1921) [ 2 ] is an exact solution to Albert Einstein 's theory of general relativity . It describes an anisotropic universe without matter (i.e., it is a vacuum solution ). It can be written in any spacetime dimension D > 3 {\dis... | https://en.wikipedia.org/wiki/Kasner_metric |
The Kastle–Meyer test is a presumptive blood test, first described in 1903, in which the chemical indicator phenolphthalein is used to detect the possible presence of hemoglobin . It relies on the peroxidase -like activity of hemoglobin in blood to catalyze the oxidation of phenolphthalin (the colorless reduced form of... | https://en.wikipedia.org/wiki/Kastle–Meyer_test |
The katal (symbol: kat ) is a unit of the International System of Units (SI) [ 1 ] used for quantifying the catalytic activity of enzymes (that is, measuring the enzymatic activity level in enzyme catalysis ) and other catalysts. One katal is that catalytic activity that will raise the rate of conversion by one mole p... | https://en.wikipedia.org/wiki/Katal |
Katalin Balázsi (née Sedláčková ; born 1978) is a Slovakia-born Hungarian material scientist . She is the head of the Thin Film Physics department in the Institute of Technical Physics and Materials Science, a component of the Centre for Energy Research, Eötvös Lóránd Research Network. She has also served as the Pres... | https://en.wikipedia.org/wiki/Katalin_Balázsi |
Katalin Vesztergombi (born July 17, 1948) [ 1 ] is a Hungarian mathematician known for her contributions to graph theory and discrete geometry . A student of Vera T. Sós and a co-author of Paul Erdős , she is an emeritus associate professor at Eötvös Loránd University [ 2 ] and a member of the Hungarian Academy of Scie... | https://en.wikipedia.org/wiki/Katalin_Vesztergombi |
Kaṭapayādi system ( Devanagari : कटपयादि, also known as Paralppēru , Malayalam: പരല്പ്പേര് ) of numerical notation is an ancient Indian alphasyllabic numeral system to depict letters to numerals for easy remembrance of numbers as words or verses . Assigning more than one letter to one numeral and nullifying certain ot... | https://en.wikipedia.org/wiki/Katapayadi_system |
The Katchalski-Katzir algorithm is an algorithm for docking of rigid molecules, developed by Ephraim Katchalski-Katzir , Isaac Shariv and Miriam Eisenstein. [ 1 ] [ 2 ]
In 1990 Professor Ephraim Katchalski-Katzir, former president of the state of Israel, gathered a group of physicists, chemists and biologists at the W... | https://en.wikipedia.org/wiki/Katchalski-Katzir_algorithm |
Katharina Lodders is a German-American planetary scientist and cosmochemist who works as a research professor in the Department of Earth and Planetary Sciences at Washington University in St. Louis , where she co-directs the Planetary Chemistry Laboratory. [ 1 ] Her research concerns the chemical composition of solar a... | https://en.wikipedia.org/wiki/Katharina_Lodders |
Katharine Hope Coward was a British pharmacologist and early adopter of chromatographic techniques. [ 1 ]
Coward was born on 2 July 1885 in Blackburn, Lancashire , England. She studied Botany and graduated M.Sc. from the University of Manchester . [ 2 ] After a few years, she joined University College London to study ... | https://en.wikipedia.org/wiki/Katharine_Coward |
Katherine Austin Lathrop (1915 – 2005) was an American nuclear medicine researcher, biochemist and member of the Manhattan Project . [ 1 ] [ 2 ] [ 3 ] [ 4 ]
Lathrop conducted pioneer work on the effects of radiation exposure on animals and humans.
Lathrop was born in Lawton, Oklahoma , on June 16, 1915. She attended ... | https://en.wikipedia.org/wiki/Katherine_A._Lathrop |
Katherine Elkins is professor of humanities and comparative literature and faculty in Computing at Kenyon College .
Elkins attended Yale as an undergraduate, then completed a Ph.D. at UC Berkeley . She is the niece of Henry Elkins . [ citation needed ]
Elkins is a professor of comparative literature and humanities in... | https://en.wikipedia.org/wiki/Katherine_Elkins |
Katherine Andrea Lemos is an American safety professional and the former chairperson and CEO of the U.S. Chemical Safety and Hazard Investigation Board (CSB).
Katherine Lemos was born to John Curtis and Laura Curtis. [ 2 ] Her father was a United States Air Force and Air National Guard pilot and a commercial airline p... | https://en.wikipedia.org/wiki/Katherine_Lemos |
Kathleen Collen Gisser is an American chemist known for her work in film products and architectural paint . As a senior staff scientist at Sherwin Williams , Gisser led the team responsible for the development of the first EPA -registered microbicidal paint.
Kathleen ( née Collen) Gisser was born in Cleveland, Ohio , ... | https://en.wikipedia.org/wiki/Kathleen_Gisser |
Kathlyn Ann Parker is a chemist known for her work on synthesis of compounds, especially organic compounds with biological roles. She is an elected fellow of the American Chemical Society and a recipient of the Garvan–Olin Medal in chemistry.
Parker graduated from Senn High School in Chicago. [ 1 ] She went on to rece... | https://en.wikipedia.org/wiki/Kathlyn_A._Parker |
Kathryn Ann Moler (born c. 1966) is an American physicist , and current dean of research at Stanford University . [ 1 ] She received her BSc (1988) and Ph.D. (1995) from Stanford University . [ 2 ] After working as a visiting scientist at IBM T.J. Watson Research Center in 1995, she held a postdoctoral position at Prin... | https://en.wikipedia.org/wiki/Kathryn_Moler |
Kato's conjecture is a mathematical problem named after mathematician Tosio Kato , of the University of California, Berkeley . Kato initially posed the problem in 1953. [ 1 ]
Kato asked whether the square roots of certain elliptic operators , defined via functional calculus , are analytic . The full statement of the c... | https://en.wikipedia.org/wiki/Kato's_conjecture |
In functional analysis , a subfield of mathematics, Kato's inequality is a distributional inequality for the Laplace operator or certain elliptic operators . It was proven in 1972 by the Japanese mathematician Tosio Kato . [ 1 ]
The original inequality is for some degenerate elliptic operators. [ 2 ] This article trea... | https://en.wikipedia.org/wiki/Kato's_inequality |
Katsumi Kaneko is a Japanese chemist and professor of Shinshu University.
He was born in Yokohama ( Kanagawa ), Japan . He graduated with a Bachelor of Engineering degree in 1969 from Yokohama National University (Applied Chemistry), Yokohama. He received a master's degree in physical chemistry at The University of To... | https://en.wikipedia.org/wiki/Katsumi_Kaneko |
In mathematics , Katugampola fractional operators are integral operators that generalize the Riemann–Liouville and the Hadamard fractional operators into a unique form. [ 1 ] [ 2 ] [ 3 ] [ 4 ] The Katugampola fractional integral generalizes both the Riemann–Liouville fractional integral and the Hadamard fractional inte... | https://en.wikipedia.org/wiki/Katugampola_fractional_operators |
Katya Ravid is a Biochemistry and Cell Biology professor at Boston University Chobanian & Avedisian School of Medicine . [ 1 ] Ravid received her Bachelor of Science, PhD, and doctoral degree from the Israel Institute of Technology . She then received her postdoctoral at the Massachusetts Institute of Technology. [ 1 ]... | https://en.wikipedia.org/wiki/Katya_Ravid |
In number theory , the Katz–Lang finiteness theorem , proved by Nick Katz and Serge Lang ( 1981 ), states that if X is a smooth geometrically connected scheme of finite type over a field K that is finitely generated over the prime field , and Ker( X / K ) is the kernel of the maps between their abelianized fundamental ... | https://en.wikipedia.org/wiki/Katz–Lang_finiteness_theorem |
The Katětov–Tong insertion theorem [ 1 ] [ 2 ] [ 3 ] is a theorem of point-set topology proved independently by Miroslav Katětov and Hing Tong in the 1950s. The theorem states the following:
Let X {\displaystyle X} be a normal topological space and let g , h : X → R {\displaystyle g,h\colon X\to \mathbb {R} } be func... | https://en.wikipedia.org/wiki/Katětov–Tong_insertion_theorem |
In knot theory , the Kauffman polynomial is a 2-variable knot polynomial due to Louis Kauffman . [ 1 ] It is initially defined on a link diagram as
where w ( K ) {\displaystyle w(K)} is the writhe of the link diagram and L ( K ) {\displaystyle L(K)} is a polynomial in a and z defined on link diagrams by the following ... | https://en.wikipedia.org/wiki/Kauffman_polynomial |
The Kauffmann olefination is a chemical reaction to convert aldehydes and ketones to olefins with a terminal methylene group . This reaction was discovered by the German chemist Thomas Kauffmann and is related to the better known Tebbe olefination or Wittig reaction .
The reagent was generated in situ by conversion of... | https://en.wikipedia.org/wiki/Kauffmann_olefination |
Kausar Abdullah Malik (born 7 July 1945), [ 1 ] [ 2 ] is a noted agriculture scientist and educationist from Lahore , Punjab , Pakistan . [ 3 ]
Malik is the eldest son of noted Urdu language author, journalist and Marxist, Abdullah Malik . [ 4 ]
Malik attended Forman Christian College in Lahore , Pakistan from 1959–1... | https://en.wikipedia.org/wiki/Kauser_Abdullah_Malik |
In biophysics , the Kautsky effect (also fluorescence transient , fluorescence induction or fluorescence decay ) is a phenomenon consisting of a typical variation in the behavior of a plant fluorescence when exposed to light. It was discovered in 1931 by H. Kautsky and A. Hirsch.
When dark-adapted photosynthesising ce... | https://en.wikipedia.org/wiki/Kautsky_effect |
Kavka's toxin puzzle is a thought experiment about the possibility of forming an intention to perform an act which, following from reason, is an action one would not actually perform. It was presented by moral and political philosopher Gregory S. Kavka in "The Toxin Puzzle" (1983), and grew out of his work in deterrenc... | https://en.wikipedia.org/wiki/Kavka's_toxin_puzzle |
The Kavli Prize was established in 2005 as a joint venture of the Norwegian Academy of Science and Letters , the Norwegian Ministry of Education and Research , and the Kavli Foundation . It honors, supports, and recognizes scientists for outstanding work in the fields of astrophysics , nanoscience and neuroscience . Th... | https://en.wikipedia.org/wiki/Kavli_Prize |
Kazakh Leading Academy of Architecture and Civil Engineering ( Kazakh : Қазақ бас сәулет-құрылыс академиясы (ҚазБСҚА) , romanized : Qazaq bas säulet-qūrylys akademiiasy (QazBSQA) is a top institution among the higher education institutions of the Republic of Kazakhstan in fields of Architecture , Design , Civil Enginee... | https://en.wikipedia.org/wiki/Kazakh_Leading_Academy_of_Architecture_and_Civil_Engineering |
The Kazan Soda Elektrik , full name Kazan Soda Elektrik Üretim A.Ş ., is a chemical industry and electric energy company in Ankara Province , Turkey producing natural soda ash and baking soda from trona . The company is a subsidiary of Ciner Holding.
The trona ore deposits were owned by Rio Tinto Group , an Australian... | https://en.wikipedia.org/wiki/Kazan_Soda_Elektrik |
In mathematics , a locally compact topological group G has property (T) if the trivial representation is an isolated point in its unitary dual equipped with the Fell topology . Informally, this means that if G acts unitarily on a Hilbert space and has "almost invariant vectors", then it has a nonzero invariant vector .... | https://en.wikipedia.org/wiki/Kazhdan's_property_(T) |
In the mathematical field of representation theory , a Kazhdan–Lusztig polynomial P y , w ( q ) {\displaystyle P_{y,w}(q)} is a member of a family of integral polynomials introduced by David Kazhdan and George Lusztig ( 1979 ). They are indexed by pairs of elements y , w of a Coxeter group W , which can in particular b... | https://en.wikipedia.org/wiki/Kazhdan–Lusztig_polynomial |
The KdpD/KdpE two-component system is a regulatory system involved in controlling potassium transport and intracellular osmolarity of pathogenic bacteria . [ 1 ] It plays an important role in potassium transport for osmoregulation of bacteria. In some bacteria, it can act as a virulence factor and acquire new adaptatio... | https://en.wikipedia.org/wiki/KdpD/KdpE_two-component_system |
Ke Kā o Makaliʻi ( lit. ' The Canoe-Bailer of Makali‘i ' ) is a Hawaiian constellation consisting of five stars in a curving formation in the shape of a bailer surrounding the western constellation Orion , although not including any stars from it. The constellation is seen to rise in the east like a cup and set in the ... | https://en.wikipedia.org/wiki/Ke_Kā_o_Makaliʻi |
Kê T'ing-sui or Ge Tingsui ( Chinese : 葛庭燧 ; pinyin : Gê Tíngsùi ; Wade–Giles : Kê T'íng-suì ; May 3, 1913 – April 29, 2000), also known as T.S. Kê , was a Chinese physicist and writer renowned for his contributions in internal friction , anelasticity, solid state physics and metallurgy . He was the member of the Chine... | https://en.wikipedia.org/wiki/Ke_T'ing-sui |
In physics , The Keating Model is a model that theoretical physicist Patrick N. Keating introduced in 1966 to describe forces induced on neighboring atoms when one atom moves in a solid.
The term most often applies to the forces on first- and second-nearest neighboring atoms that arise when an atom is moved in tetrahe... | https://en.wikipedia.org/wiki/Keating_model |
Keatite is a silicate mineral with the chemical formula Si O 2 ( silicon dioxide ) that was discovered in nature in 2013. It is a tetragonal polymorph of silica first known as a synthetic phase. [ 1 ] It was reported as minute inclusions within clinopyroxene ( diopside ) crystals in an ultra high pressure garnet pyroxe... | https://en.wikipedia.org/wiki/Keatite |
In organic chemistry , the Keck asymmetric allylation is a chemical reaction that involves the nucleophilic addition of an allyl group to an aldehyde. The catalyst is a chiral complex that contains titanium as a Lewis acid . The chirality of the catalyst induces a stereoselective addition, so the secondary alcohol of t... | https://en.wikipedia.org/wiki/Keck_asymmetric_allylation |
KeeLoq is a proprietary hardware-dedicated block cipher that uses a non-linear feedback shift register (NLFSR). The uni-directional command transfer protocol was designed by Frederick Bruwer of Nanoteq (Pty) Ltd., the cryptographic algorithm was created by Gideon Kuhn at the University of Pretoria , and the silicon im... | https://en.wikipedia.org/wiki/KeeLoq |
A Key Klamp is a structural pipe fitting commonly used in the construction of handrails and barriers. Fabricated installations comprise the fittings and separate tubing components, which can be sized on site.
The system was devised in 1934 and is made by a subsidiary of KIG Holdings. The fittings are mostly supplied t... | https://en.wikipedia.org/wiki/Kee_Klamp |
Keen as Mustard is a documentary film researched and directed by Bridget Goodwin detailing secret experiments conducted during World War II on Australian servicemen volunteers to investigate the effects of, and precautions against, mustard gas when used as a weapon in the tropics. The film, released by Film Australia i... | https://en.wikipedia.org/wiki/Keen_as_Mustard_(film) |
Keepers are substances (typically solvents , but sometimes adsorbent solids) added in relatively small quantities during an evaporative procedure in analytical chemistry, such as concentration of an analyte-solvent mixture by rotary evaporation . The purpose of a keeper is to reduce losses of a target analyte during th... | https://en.wikipedia.org/wiki/Keeper_(chemistry) |
The Keetch–Byram drought index ( known as KBDI ), created by John Keetch and George Byram in 1968 for the United States Department of Agriculture 's Forest Service , is a measure of drought conditions. It is commonly used for the purpose of predicting the likelihood and severity of wildfires . It is calculated based on... | https://en.wikipedia.org/wiki/Keetch–Byram_drought_index |
The Keggin structure is the best known structural form for heteropoly acids . It is the structural form of α-Keggin anions, having a general formula of [XM 12 O 40 ] n − , where X is the heteroatom (most commonly are pentavalent phosphorus P V , tetravalent silicon Si IV , or trivalent boron B III ), M is the addendum ... | https://en.wikipedia.org/wiki/Keggin_structure |
Keiichi Itakura ( 板倉 啓壹 , Itakura Keiichi , born February 18, 1942 in Tokyo , Japan) is an organic chemist and a Professor in the Department of Molecular and Cellular Biology at the Beckman Research Institute at City of Hope National Medical Center . [ 1 ] [ 2 ]
Itakura was born in Tokyo , Japan on February 18, 1942. ... | https://en.wikipedia.org/wiki/Keiichi_Itakura |
Keiji Morokuma (諸熊 奎治, Morokuma Keiji ; July 12, 1934 – November 27, 2017) was a Japanese theoretical chemist and chemical engineer known for developing energy decomposition analysis for molecular interactions [ 1 ] and the ONIOM method in quantum chemistry . [ 2 ] [ 3 ] [ 4 ]
Morokuma was born in Kagoshima , Kagoshim... | https://en.wikipedia.org/wiki/Keiji_Morokuma |
Keiko Hattori is a geochemist and mineralogist . She is Distinguished University Professor of Geochemistry and Mineral Deposits in the Department of Earth and Environmental Sciences at the University of Ottawa . [ 1 ]
Hattori is most known for her research on aspects of Earth's atmospheric and mantle evolution, as wel... | https://en.wikipedia.org/wiki/Keiko_Hattori |
Keith A. Buzzell (1932–2018) was an American osteopathic physician, lecturer, author, and practitioner of the Gurdjieff Work , also known as the Fourth Way . His work focused on bridging the teachings of G.I. Gurdjieff with contemporary understandings of science, consciousness, neurophysiology, and education.
Buzzell ... | https://en.wikipedia.org/wiki/Keith_A._Buzzell |
Keith Henry Stockman Campbell (23 May 1954 – 5 October 2012) [ 1 ] was a British biologist who was a member of the team at Roslin Institute that in 1996 first cloned a mammal, a Finnish Dorset lamb named Dolly , from fully differentiated adult mammary cells. He was Professor of Animal Development at the University of N... | https://en.wikipedia.org/wiki/Keith_Campbell_(biologist) |
Keith Fagnou (June 27, 1971 – November 11, 2009) was a Canadian organic chemist and studied education and was a professor of chemistry at University of Saskatchewan and associate professor of organic chemistry at the University of Ottawa . His research focused on developing new reactions that avoid unnecessary activat... | https://en.wikipedia.org/wiki/Keith_Fagnou |
Keith Christopher Rowley MP (born 24 October 1949) is a Trinidad and Tobago politician who served as the seventh prime minister of Trinidad and Tobago from 2015 to 2025. He was the leader the People's National Movement (PNM) from 2010 to 2025 and was Leader of the Opposition from 2010 to 2015. He also served as the Mem... | https://en.wikipedia.org/wiki/Keith_Rowley |
Kekulé was a computer program named after the chemist Friedrich August Kekulé von Stradonitz . The program was created starting in about 1990 by Joe McDaniel and Jason Balmuth while at Fein-Marquart Associates with funding from the National Cancer Institute under a Small Business Innovative Research Grant .
The progra... | https://en.wikipedia.org/wiki/Kekulé_Program |
In non-equilibrium physics , the Keldysh formalism or Keldysh–Schwinger formalism is a general framework for describing the quantum mechanical evolution of a system in a non-equilibrium state or systems subject to time varying external fields ( electrical field , magnetic field etc.). Historically, it was foreshadowed... | https://en.wikipedia.org/wiki/Keldysh_formalism |
In metallurgy , Keller's reagent is a mixture of nitric acid , hydrochloric acid , and hydrofluoric acid , used to etch aluminum alloys to reveal their grain boundaries and orientations. [ 1 ] It is also sometimes called Dix–Keller reagent , after E. H. Dix, Jr., and Fred Keller of the Aluminum Corporation of America ,... | https://en.wikipedia.org/wiki/Keller's_reagent_(metallurgy) |
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