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Kidney dialysis [ a ] is the process of removing excess water , solutes , and toxins from the blood in people whose kidneys can no longer perform these functions naturally. Along with kidney transplantation , it is a type of renal replacement therapy .
Dialysis may need to be initiated when there is a sudden rapid los... | https://en.wikipedia.org/wiki/Kidney_dialysis |
Kihachiro Ueda (上田毅八郎) was a Japanese painter. His primary subject matter is Japanese ships.
During the Second World War , Ueda was an anti-aircraft gunner assigned to several merchant ships. [ 1 ] He served on about 28 merchant ships, and 6 of those were attacked and destroyed while he was aboard. During his spare t... | https://en.wikipedia.org/wiki/Kihachiro_Ueda |
Kiiti Morita ( 森田 紀一 , Morita Kiichi , February 11, 1915 – August 4, 1995) was a Japanese mathematician working in algebra and topology .
Morita was born in 1915 in Hamamatsu , Shizuoka Prefecture and graduated from the Tokyo Higher Normal School in 1936. Three years later he was appointed assistant at the Tokyo Unive... | https://en.wikipedia.org/wiki/Kiiti_Morita |
The Kiliani–Fischer synthesis , named for German chemists Heinrich Kiliani and Emil Fischer , is a method for synthesizing monosaccharides . It proceeds via synthesis and hydrolysis of a cyanohydrin , followed by reduction of the intermediate acid to the aldehyde, thus elongating the carbon chain of an aldose by one c... | https://en.wikipedia.org/wiki/Kiliani–Fischer_synthesis |
Kilju ( Finnish pronunciation: [ˈkilju] ) is the Finnish word for a mead -like homemade alcoholic beverage made from a source of carbohydrates (such as cane sugar or honey), yeast , and water, making it both affordable and cheap to produce. The ABV depends on the yeast that was used, and since it does not contain a sw... | https://en.wikipedia.org/wiki/Kilju |
In computing , a kill pill is a mechanism or a technology designed to render systems useless either by user command, or under a predefined set of circumstances. Kill pill technology is most commonly used to disable lost or stolen devices for security purposes, but can also be used for the enforcement of rules and contr... | https://en.wikipedia.org/wiki/Kill_pill |
Killer Activation Receptors (KARs) are receptors expressed on the plasma membrane (cell membrane) of Natural Killer cells ( NK cells ). KARs work together with Killer I nhibitory Receptors (abbreviated as KIRs in the text), which inactivate KARs in order to regulate the NK cells functions on hosted or transformed cells... | https://en.wikipedia.org/wiki/Killer_activation_receptor |
A killing jar or killing bottle is a device used by entomologists to kill captured insects quickly and with minimum damage. [ 1 ] The jar typically contains gypsum plaster (plaster of paris) on the bottom to absorb a killing fluid. The killing fluid evaporates into the air and gasses the insect. Typically only adult ha... | https://en.wikipedia.org/wiki/Killing_jar |
A Killough platform is a three-wheel drive system that uses traditional wheels to achieve omni-directional movement without the use of omni-directional wheels (such as omni wheels / Mecanum wheels ). Designed by Stephen Killough, after which the platform is named, with help from Francois Pin, wanted to achieve omni-di... | https://en.wikipedia.org/wiki/Killough_platform |
A kiln is a thermally insulated chamber, a type of oven , that produces temperatures sufficient to complete some process, such as hardening, drying, or chemical changes . Kilns have been used for millennia to turn objects made from clay into pottery , tiles and bricks . Various industries use rotary kilns for pyroproce... | https://en.wikipedia.org/wiki/Kiln |
Kiln furniture are devices and implements inside furnaces used during the heating of manufactured individual pieces, such as pottery or other ceramic or metal components. [ 1 ] Kiln furniture is made of refractory materials , i.e., materials that withstand high temperatures without deformation. [ 2 ] Kiln furniture can... | https://en.wikipedia.org/wiki/Kiln_furniture |
The kilobyte is a multiple of the unit byte for digital information .
The International System of Units (SI) defines the prefix kilo as a multiplication factor of 1000 (10 3 ); therefore, one kilobyte is 1000 bytes. [ 1 ] The internationally recommended unit symbol for the kilobyte is kB . [ 1 ]
In some areas of info... | https://en.wikipedia.org/wiki/Kilobyte |
The kilocalorie per mole is a unit to measure an amount of energy per number of molecules , atoms , or other similar particles . It is defined as one kilocalorie of energy (1000 thermochemical gram calories ) per one mole of substance. The unit symbol is written kcal/mol or kcal⋅mol −1 . As typically measured, one kc... | https://en.wikipedia.org/wiki/Kilocalorie_per_mole |
The kilogram per cubic metre (symbol: kg·m −3 , or kg/m 3 ) is the unit of density in the International System of Units (SI). It is defined by dividing the SI unit of mass , the kilogram , by the SI unit of volume , the cubic metre . [ 1 ]
The density of water is about 1000 kg/m 3 or 1 g/cm 3 , because the size of the... | https://en.wikipedia.org/wiki/Kilogram_per_cubic_metre |
A kilonova (also called a macronova ) is a transient astronomical event that occurs in a compact binary system when two neutron stars (BNS) or a neutron star and a black hole collide. [ 1 ] The kilonova, visible over the weeks and months following the merger, is an isotropically expanding luminous afterglow of electrom... | https://en.wikipedia.org/wiki/Kilonova |
Kim Guldstrand Larsen R (born 1957) is a Danish scientist and professor of computer science at Aalborg University , Denmark . His field of research includes modeling , validation and verification, performance analysis, and synthesing of real-time , embedded , and cyber-physical systems utilizing and contributing to con... | https://en.wikipedia.org/wiki/Kim_Guldstrand_Larsen |
The Kim reformer is a type of syngas plant invented by Hyun Yong Kim. It is a high temperature furnace (as shown in figure 1), filled with steam and/or carbon dioxide gas and maintaining a thermal equilibrium at a temperature just above 1200 °C, in which the reforming reaction is at its thermodynamic equilibrium and ca... | https://en.wikipedia.org/wiki/Kim_reformer |
Kimito Funatsu ( 船津 公人 , Funatsu Kimito , born December 3, 1955) [ 1 ] is a Japanese chemist specializing in chemoinformatics and data-driven chemistry, a professor emeritus at University of Tokyo , and the research director of the Data Science Center at Nara Institute of Science and Technology .
He graduated from Kag... | https://en.wikipedia.org/wiki/Kimito_Funatsu |
Kin recognition , also called kin detection , is an organism's ability to distinguish between close genetic kin and non-kin. In evolutionary biology and psychology , such an ability is presumed to have evolved for inbreeding avoidance , [ 1 ] though animals do not typically avoid inbreeding. [ 2 ]
An additional adapti... | https://en.wikipedia.org/wiki/Kin_recognition |
The term Kinase tyrosine-based inhibitory motif (KTIM) was coined by a group of immunology researchers from McGill University , Montreal, Quebec , Canada [ 1 ] in 2008 to represent any immunoreceptor tyrosine-based inhibitory -like sequence motif , with the consensus sequence I/V/L/SxYxxL/V, found in a kinase and regul... | https://en.wikipedia.org/wiki/Kinase_tyrosine-based_inhibitory_motif |
A physical quantity (or simply quantity ) [ 1 ] [ a ] is a property of a material or system that can be quantified by measurement . A physical quantity can be expressed as a value , which is the algebraic multiplication of a numerical value and a unit of measurement . For example, the physical quantity mass , symbol m ... | https://en.wikipedia.org/wiki/Kind_of_quantity |
Kindara is a femtech company headquartered in Colorado that develops apps that help women identify their fertile window. The products are used for women trying to get pregnant, or women who want to track their menstrual cycle for overall health. [ 1 ] [ 2 ] Their latest product, Priya Fertility and Ovulation Monitor, m... | https://en.wikipedia.org/wiki/Kindara |
A kinemage (short for kinetic image ) is an interactive graphic scientific illustration. It often is used to visualize molecules , especially proteins although it can also represent other types of 3-dimensional data (such as geometric figures, social networks, [ 1 ] or tetrahedra of RNA base composition ). The kinemage... | https://en.wikipedia.org/wiki/Kinemage |
In mechanical engineering , a kinematic chain is an assembly of rigid bodies connected by joints to provide constrained motion that is the mathematical model for a mechanical system . [ 1 ] As the word chain suggests, the rigid bodies, or links, are constrained by their connections to other links. An example is the si... | https://en.wikipedia.org/wiki/Kinematic_chain |
Kinematic determinacy is a term used in structural mechanics to describe a structure where material compatibility conditions alone can be used to calculate deflections . [ 1 ] A kinematically determinate structure can be defined as a structure where, if it is possible to find nodal displacements compatible with member ... | https://en.wikipedia.org/wiki/Kinematic_determinacy |
In mechanical engineering , a kinematic diagram or kinematic scheme (also called a joint map or skeleton diagram ) illustrates the connectivity of links and joints of a mechanism or machine rather than the dimensions or shape of the parts. Often links are presented as geometric objects, such as lines, triangles or squ... | https://en.wikipedia.org/wiki/Kinematic_diagram |
In mechanical engineering , kinematic synthesis (also known as mechanism synthesis ) determines the size and configuration of mechanisms that shape the flow of power through a mechanical system , or machine , to achieve a desired performance. [ 1 ] The word synthesis refers to combining parts to form a whole. [ 2 ] Har... | https://en.wikipedia.org/wiki/Kinematic_synthesis |
In gravity and pressure driven fluid dynamical and geophysical mass flows such as ocean waves, avalanches, debris flows, mud flows, flash floods, etc., kinematic waves are important mathematical tools to understand the basic features of the associated wave phenomena. [ 1 ] These waves are also applied to model the moti... | https://en.wikipedia.org/wiki/Kinematic_wave |
In physics , kinematics studies the geometrical aspects of motion of physical objects independent of forces that set them in motion. Constrained motion such as linked machine parts are also described as kinematics.
Kinematics is concerned with systems of specification of objects' positions and velocities and mathemati... | https://en.wikipedia.org/wiki/Kinematics |
Kinesis , like a taxis or tropism , is a movement or activity of a cell or an organism in response to a stimulus (such as gas exposure , light intensity or ambient temperature ).
Unlike taxis, the response to the stimulus provided is non-directional. The animal does not move toward or away from the stimulus but moves ... | https://en.wikipedia.org/wiki/Kinesis_(biology) |
Kinetic-segregation is a model proposed for the mechanism of T-cell receptor (TCR) triggering. [ 1 ] [ 2 ] It offers an explanation for how TCR binding to its ligand triggers T-cell activation, based on size-sensitivity for the molecules involved. Simon J. Davis and Anton van der Merwe , University of Oxford , proposed... | https://en.wikipedia.org/wiki/Kinetic-segregation_model_of_T_cell_activation |
The kinetic Monte Carlo (KMC) method is a Monte Carlo method computer simulation intended to simulate the time evolution of some processes occurring in nature. Typically these are processes that occur with known transition rates among states. These rates are inputs to the KMC algorithm; the method itself cannot predict... | https://en.wikipedia.org/wiki/Kinetic_Monte_Carlo |
The Kinetic PreProcessor (KPP) is an open-source software tool used in atmospheric chemistry . Taking a set of chemical reactions and their rate coefficients as input, KPP generates Fortran 90 , FORTRAN 77 , C , or Matlab code
of the resulting ordinary differential equations (ODEs) . Solving the ODEs allows the tempor... | https://en.wikipedia.org/wiki/Kinetic_PreProcessor |
Kinetic architecture is a concept through which buildings are designed to allow parts of the structure to move, without reducing overall structural integrity.
A building's capability for motion can be used just to: enhance its aesthetic qualities; respond to environmental conditions; and/or, perform functions that wou... | https://en.wikipedia.org/wiki/Kinetic_architecture |
Kinetic capillary electrophoresis or KCE is capillary electrophoresis of molecules that interact during electrophoresis.
KCE was introduced and developed by Professor Sergey Krylov and his research group at York University , Toronto, Canada. [ 1 ] It serves as a conceptual platform for development of homogeneous chemi... | https://en.wikipedia.org/wiki/Kinetic_capillary_electrophoresis |
In polymer chemistry , the kinetic chain length ( ν ) of a polymer is the average number of units called monomers added to a growing chain during chain-growth polymerization . During this process, a polymer chain is formed when monomers are bonded together to form long chains known as polymers. Kinetic chain length is ... | https://en.wikipedia.org/wiki/Kinetic_chain_length |
In physics and engineering , a free body diagram ( FBD ; also called a force diagram ) [ 1 ] is a graphical illustration used to visualize the applied forces , moments , and resulting reactions on a free body in a given condition. It depicts a body or connected bodies with all the applied forces and moments, and reacti... | https://en.wikipedia.org/wiki/Kinetic_diagram |
Kinetic diameter is a measure applied to atoms and molecules that expresses the likelihood that a molecule in a gas will collide with another molecule. It is an indication of the size of the molecule as a target. The kinetic diameter is not the same as atomic diameter defined in terms of the size of the atom's electr... | https://en.wikipedia.org/wiki/Kinetic_diameter |
Kinetic energy metamorphosis ( KEM ) is a tribological process of gradual crystal re-orientation and foliation of component minerals in certain rocks. It is caused by very high, localized application of kinetic energy . The required energy may be provided by prolonged battery of fluvially propelled bed load of cobbles,... | https://en.wikipedia.org/wiki/Kinetic_energy_metamorphosis |
Kinetic exchange models are multi-agent dynamic models inspired by the statistical physics of energy distribution , which try to explain the robust and universal features of income/wealth distributions.
Understanding the distributions of income and wealth in an economy has been a classic problem in economics for more ... | https://en.wikipedia.org/wiki/Kinetic_exchange_models_of_markets |
A kinetic exclusion assay ( KinExA ) is a type of bioassay in which a solution containing receptor , ligand , and receptor-ligand complex is briefly exposed to additional ligand immobilized on a solid phase. [ 1 ] [ 2 ]
During the assay, a fraction of the free receptor is captured by the solid phase ligand and subsequ... | https://en.wikipedia.org/wiki/Kinetic_exclusion_assay |
Kinetic fractionation is an isotopic fractionation process that separates stable isotopes from each other by their mass during unidirectional processes. Biological processes are generally unidirectional and are very good examples of "kinetic" isotope reactions. All organisms preferentially use lighter isotopes, because... | https://en.wikipedia.org/wiki/Kinetic_fractionation |
Kinetic inductance is the manifestation of the inertial mass of mobile charge carriers in alternating electric fields as an equivalent series inductance . Kinetic inductance is observed in high carrier mobility conductors (e.g. superconductors ) and at very high frequencies.
A change in electromotive force (emf) will ... | https://en.wikipedia.org/wiki/Kinetic_inductance |
In physical organic chemistry , a kinetic isotope effect ( KIE ) is the change in the reaction rate of a chemical reaction when one of the atoms in the reactants is replaced by one of its isotopes . [ 3 ] Formally, it is the ratio of rate constants for the reactions involving the light ( k L ) and the heavy ( k H ) iso... | https://en.wikipedia.org/wiki/Kinetic_isotope_effect |
The kinetic isotope effect (KIE) of ribulose-1,5-bisphosphate carboxylase oxygenase ( RuBisCO ) is the isotopic fractionation associated solely with the step in the Calvin-Benson cycle where a molecule of carbon dioxide (CO 2 ) is attached to the 5-carbon sugar ribulose-1,5-bisphosphate (RuBP) to produce two 3-carbon s... | https://en.wikipedia.org/wiki/Kinetic_isotope_effects_of_RuBisCO |
Kinetic proofreading (or kinetic amplification ) is a mechanism for error correction in biochemical reactions , proposed independently by John Hopfield (1974) and Jacques Ninio (1975). Kinetic proofreading allows enzymes to discriminate between two possible reaction pathways leading to correct or incorrect products wit... | https://en.wikipedia.org/wiki/Kinetic_proofreading |
In organic chemistry , kinetic resolution is a means of differentiating two enantiomers in a racemic mixture . In kinetic resolution, two enantiomers react with different reaction rates in a chemical reaction with a chiral catalyst or reagent, resulting in an enantioenriched sample of the less reactive enantiomer. [ 1 ... | https://en.wikipedia.org/wiki/Kinetic_resolution |
In physics , chemistry and related fields, a kinetic scheme is a network of states and connections between them representing a dynamical process. Usually a kinetic scheme represents a Markovian process , while for non-Markovian processes generalized kinetic schemes are used. Figure 1 illustrates a kinetic scheme.
A ki... | https://en.wikipedia.org/wiki/Kinetic_scheme |
The kinetic theory of gases is a simple classical model of the thermodynamic behavior of gases . Its introduction allowed many principal concepts of thermodynamics to be established. It treats a gas as composed of numerous particles, too small to be seen with a microscope, in constant, random motion. These particles ar... | https://en.wikipedia.org/wiki/Kinetic_theory_of_gases |
A kinetochore ( / k ɪ ˈ n ɛ t ə k ɔːr / , /- ˈ n iː t ə k ɔːr / ) is a flared oblique-shaped protein structure associated with duplicated chromatids in eukaryotic cells where the spindle fibers , which can be thought of as the ropes pulling chromosomes apart, attach during cell division to pull sister chromatids apart.... | https://en.wikipedia.org/wiki/Kinetochore |
The King Abdullah Canal is the largest irrigation canal system in Jordan and runs parallel to the east bank of the Jordan River . It was previously known as the East Ghor Main Canal and renamed in 1987 after Abdullah I of Jordan . [ 1 ]
The main water source for the King Abdullah Canal (KAC) is the Yarmouk River and t... | https://en.wikipedia.org/wiki/King_Abdullah_Canal |
King Pharmaceuticals, Inc. is a pharmaceutical company, a wholly owned subsidiary of Pfizer based in Bristol, Tennessee . Before being acquired by Pfizer, it was the world's 39th largest pharmaceutical company . [ 1 ] [ 2 ] On October 12, 2010, King was acquired by Pfizer for $14.25 per share. [ 3 ] King produced a wid... | https://en.wikipedia.org/wiki/King_Pharmaceuticals |
A king post (or king-post or kingpost ) is a central vertical post used in architectural or bridge designs, working in tension to support a beam below from a truss apex above (whereas a crown post , though visually similar, supports items above from the beam below).
In aircraft design a strut called a king post acts i... | https://en.wikipedia.org/wiki/King_post |
In biology , a kingdom is the second highest taxonomic rank , just below domain . Kingdoms are divided into smaller groups called phyla (singular phylum).
Traditionally, textbooks from Canada and the United States have used a system of six kingdoms ( Animalia , Plantae , Fungi , Protista , Archaea /Archaebacteria, and... | https://en.wikipedia.org/wiki/Kingdom_(biology) |
In mathematics, Kingman's subadditive ergodic theorem is one of several ergodic theorems . It can be seen as a generalization of Birkhoff's ergodic theorem . [ 1 ] Intuitively, the subadditive ergodic theorem is a kind of random variable version of Fekete's lemma (hence the name ergodic). [ 2 ] As a result, it can be r... | https://en.wikipedia.org/wiki/Kingman's_subadditive_ergodic_theorem |
Kinks are deviations of a dislocation defect along its glide plane. In edge dislocations, the constant glide plane allows short regions of the dislocation to turn, converting into screw dislocations and producing kinks. Screw dislocations have rotatable glide planes, thus kinks that are generated along screw dislocatio... | https://en.wikipedia.org/wiki/Kink_(materials_science) |
In organophosphorus chemistry , the Kinnear–Perren reaction (sometimes the Clay-Kinnear-Perren reaction) is used to prepare alkylphosphonyl dichlorides (RP(O)Cl 2 ) and alkyl phosphonate esters (RP(O)(OR') 2 ). [ 1 ] The reactants are alkyl chloride, phosphorus trichloride , and aluminium trichloride as catalyst. [ 2 ]... | https://en.wikipedia.org/wiki/Kinnear–Perren_reaction |
The Kinyoun method or Kinyoun stain (cold method), developed by Joseph J. Kinyoun , is a procedure used to stain acid-fast species of the bacterial genus Mycobacterium . [ 1 ] It is a variation of a method developed by Robert Koch in 1882. Certain species of bacteria have a waxy lipid called mycolic acid, in their cell... | https://en.wikipedia.org/wiki/Kinyoun_stain |
Kipp's apparatus , also called a Kipp generator , is an apparatus designed for preparation of small volumes of gases . It was invented around 1844 by the Dutch pharmacist Petrus Jacobus Kipp and widely used in chemical laboratories and for demonstrations in schools into the second half of the 20th century.
It later fe... | https://en.wikipedia.org/wiki/Kipp's_apparatus |
The Kirbee Kiln Site is a 19th-century kiln ruin located in Montgomery County, Texas , where stoneware was manufactured by the Kirbee family. It is one of the largest groundhog kilns ever recorded in the American South. The exact location of the site is restricted. It was listed on the National Register of Historic Pla... | https://en.wikipedia.org/wiki/Kirbee_Kiln_Site |
Kirchhoff's circuit laws are two equalities that deal with the current and potential difference (commonly known as voltage) in the lumped element model of electrical circuits . They were first described in 1845 by German physicist Gustav Kirchhoff . [ 1 ] This generalized the work of Georg Ohm and preceded the work of ... | https://en.wikipedia.org/wiki/Kirchhoff's_circuit_laws |
In the mathematical field of graph theory , Kirchhoff's theorem or Kirchhoff's matrix tree theorem named after Gustav Kirchhoff is a theorem about the number of spanning trees in a graph , showing that this number can be computed in polynomial time from the determinant of a submatrix of the graph's Laplacian matrix ; s... | https://en.wikipedia.org/wiki/Kirchhoff's_theorem |
In fluid dynamics , the Kirchhoff equations , named after Gustav Kirchhoff , describe the motion of a rigid body in an ideal fluid .
d d t ∂ T ∂ ω = ∂ T ∂ ω × ω + ∂ T ∂ v × v + Q h + Q , d d t ∂ T ∂ v = ∂ T ∂ v × ω + F h + F , T = 1 2 ( ω T I ~ ω + m v 2 ) Q h = − ∫ p x × n ^ d σ , F h = − ∫ p n ^ d σ {\displaystyle {... | https://en.wikipedia.org/wiki/Kirchhoff_equations |
The Kiritimatiellota are a phylum of bacteria . [ 3 ]
This bacteria -related article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Kiritimatiellota |
The Kirkendall effect is the motion of the interface between two metals that occurs due to the difference in diffusion rates of the metal atoms. The effect can be observed, for example, by placing insoluble markers at the interface between a pure metal and an alloy containing that metal, and heating to a temperature wh... | https://en.wikipedia.org/wiki/Kirkendall_effect |
The Kirkhill Astronomical Pillar was constructed in 1776 by David Stewart Erskine, 11th Earl of Buchan [ a ] and erected in the grounds of his estate at Kirkhill House, near Broxburn , Scotland . The pillar fell into disrepair and eventually collapsed in the 1970s but fortunately the stones were preserved and the pill... | https://en.wikipedia.org/wiki/Kirkhill_Astronomical_Pillar |
Kirkman's schoolgirl problem is a problem in combinatorics proposed by Thomas Penyngton Kirkman in 1850 as Query VI in The Lady's and Gentleman's Diary (pg.48). The problem states:
Fifteen young ladies in a school walk out three abreast for seven days in succession: it is required to arrange them daily so that no two... | https://en.wikipedia.org/wiki/Kirkman's_schoolgirl_problem |
The Kirkwood–Buff (KB) solution theory , due to John G. Kirkwood and Frank P. Buff , links macroscopic (bulk) properties to microscopic (molecular) details. Using statistical mechanics , the KB theory derives thermodynamic quantities from pair correlation functions between all molecules in a multi-component solution. [... | https://en.wikipedia.org/wiki/Kirkwood–Buff_solution_theory |
The Kirsanov reaction is a method for the synthesis of certain organophosphorus compounds . In this reaction a tertiary phosphine is combined with a halogen and then an amine to give the iminophosphines, which are useful ligands and useful reagents . [ 1 ] A typical reaction involves triphenylphosphine with bromine to... | https://en.wikipedia.org/wiki/Kirsanov_reaction |
The Kirschner value or Kirschner number is a value determined when examining fat . The Kirschner value is an indicator of how much volatile fatty acid can be extracted from fat through saponification . It consists of the number of milliliters of 0.1 normal sodium hydroxide necessary for the neutralization of water-solu... | https://en.wikipedia.org/wiki/Kirschner_value |
KisMAC is a wireless network discovery tool for Mac OS X . It has a wide range of features, similar to those of Kismet (its Linux / BSD namesake). The program is geared toward network security professionals, and is not as novice-friendly as similar applications. Distributed under the GNU General Public License , [ 2 ... | https://en.wikipedia.org/wiki/KisMAC |
In organic chemistry , cyclopropanation refers to any chemical process which generates cyclopropane ( (CH 2 ) 3 ) rings . It is an important process in modern chemistry as many useful compounds bear this motif; for example pyrethroid insecticides and a number of quinolone antibiotics ( ciprofloxacin , sparfloxacin , et... | https://en.wikipedia.org/wiki/Kishner_cyclopropane_synthesis |
A kit is a set of components that has to be assembled by the buyer or at the site of use to get the definitive product.
Examples:
This technology-related article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Kit_(components) |
Kevin Kit Parker is a lieutenant colonel in the United States Army Reserve [ 1 ] and the Tarr Family Professor of Bioengineering and Applied Physics at Harvard University . [ 2 ] His research includes cardiac cell biology and tissue engineering, traumatic brain injury , and biological applications of micro- and nanotec... | https://en.wikipedia.org/wiki/Kit_Parker |
In condensed matter physics , the Kitaev chain or Kitaev–Majorana chain is a simplified model for a topological superconductor . It models a one dimensional lattice featuring Majorana bound states . The Kitaev chain have been used as a toy model of semiconductor nanowires for the development of topological quantum comp... | https://en.wikipedia.org/wiki/Kitaev_chain |
Kitbashing or model bashing is the practice of making a new scale model by taking pieces out of kits. These pieces may be added to a custom project or to another kit. For professional modelmakers , kitbashing is used to create concept models for detailing movie special effects . Commercial model kits are a ready source... | https://en.wikipedia.org/wiki/Kitbashing |
The Kitchen rudder is the familiar name for "Kitchen's Patent Reversing Rudders", a combination rudder and directional propulsion delivery system for relatively slow speed displacement boats which was invented in the early 20th century by John G. A. Kitchen of Lancashire, England. It turns the rudder into a directiona... | https://en.wikipedia.org/wiki/Kitchen_rudder |
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Kitrinoviricota is a phylum of RNA viruses that includes all positive-strand RNA viruses that infect eukaryotes and are not members of the phylum Pisuviricota or Lenarviricota . [ 1 ] The name of the group derives from Greek κίτρινος ( kítrinos ), which means yellow (a reference to yellow fever virus ), and -... | https://en.wikipedia.org/wiki/Kitrinoviricota |
The Kiviter process is an above ground retorting technology for shale oil extraction .
The Kiviter process is based on the earlier vertical retort technology (Pintsch's generator). [ 1 ] This technology underwent a long process of development. The early concept of central inlet of the heat carrier was later replaced b... | https://en.wikipedia.org/wiki/Kiviter_process |
A Kiwi drive is a holonomic drive system of three omni-directional wheels (such as omni wheels or Mecanum wheels ), 120 degrees from each other, that enables movement in any direction using only three motors. This is in contrast with non-holonomic systems such as traditionally wheeled or tracked vehicles which cannot ... | https://en.wikipedia.org/wiki/Kiwi_drive |
The Kjeldahl method or Kjeldahl digestion ( Danish pronunciation: [ˈkʰelˌtɛˀl] ) in analytical chemistry is a method for the quantitative determination of a sample's organic nitrogen plus ammonia / ammonium (NH 3 /NH 4 + ). Without modification, other forms of inorganic nitrogen, for instance nitrate , are not included... | https://en.wikipedia.org/wiki/Kjeldahl_method |
Klaas Wynne (also Wijnne ; born 1964) is a professor in the School of Chemistry at the University of Glasgow and chair of Chemical Physics . [ 1 ] [ 2 ] He was previously a professor in the Department of Physics at the University of Strathclyde (1996–2010). [ 3 ]
He received his BSc in chemistry from the University of... | https://en.wikipedia.org/wiki/Klaas_Wynne |
Klark Teknik is a company that designs and develops professional signal processing and audio equipment . Located in Kidderminster , Worcestershire, UK, the company was founded in 1974 by brothers Terence and Phillip Clarke. It developed a number of new types of equipment in the audio field, winning a Queen's Awards for... | https://en.wikipedia.org/wiki/Klark_Teknik |
Klaus Bechgaard (5 March 1945 – 7 March 2017 [ 1 ] ) was a Danish scientist and chemist , noted for being one of the first scientists in the world to synthesize a number of organic charge transfer complexes and demonstrate their superconductivity , therefore the name Bechgaard salt . These salts all exhibit superconduc... | https://en.wikipedia.org/wiki/Klaus_Bechgaard |
Klaus Schmiegel (born June 28, 1939), is a German chemist best known for his work in organic chemistry , which led to the invention of Prozac , a widely used antidepressant .
Klaus Schmiegel was born in Chemnitz , Germany on June 28, 1939. After he immigrated to the United States in 1951, Schmiegel received a B.S. in ... | https://en.wikipedia.org/wiki/Klaus_Schmiegel |
Klavs Flemming Jensen [ 1 ] (born August 5, 1952) [ 2 ] is a chemical engineer who is currently the Warren K. Lewis Professor at the Massachusetts Institute of Technology (MIT). [ 2 ]
Jensen was elected a member of the National Academy of Engineering in 2002 for fundamental contributions to multi-scale chemical reacti... | https://en.wikipedia.org/wiki/Klavs_F._Jensen |
In computational geometry , Klee's measure problem is the problem of determining how efficiently the measure of a union of ( multidimensional ) rectangular ranges can be computed. Here, a d -dimensional rectangular range is defined to be a Cartesian product of d intervals of real numbers , which is a subset of R d .
T... | https://en.wikipedia.org/wiki/Klee's_measure_problem |
Klee diagrams , named for their resemblance to paintings by Paul Klee , are false-colour maps that represent a way of assembling and viewing large genomic datasets . Contemporary research has produced genomic databases for an enormous range of life forms, inviting insights into the genetic basis of biodiversity . [ 1 ]... | https://en.wikipedia.org/wiki/Klee_diagram |
In computability theory , Kleene's recursion theorems are a pair of fundamental results about the application of computable functions to their own descriptions. The theorems were first proved by Stephen Kleene in 1938 [ 1 ] and appear in his 1952 book Introduction to Metamathematics . [ 2 ] A related theorem, which ... | https://en.wikipedia.org/wiki/Kleene's_recursion_theorem |
In the mathematical areas of order and lattice theory , the Kleene fixed-point theorem , named after American mathematician Stephen Cole Kleene , states the following:
The ascending Kleene chain of f is the chain
obtained by iterating f on the least element ⊥ of L . Expressed in a formula, the theorem states that
wh... | https://en.wikipedia.org/wiki/Kleene_fixed-point_theorem |
In descriptive set theory , the Kleene–Brouwer order or Lusin–Sierpiński order [ 1 ] is a linear order on finite sequences over some linearly ordered set ( X , < ) {\displaystyle (X,<)} , that differs from the more commonly used lexicographic order in how it handles the case when one sequence is a prefix of the other. ... | https://en.wikipedia.org/wiki/Kleene–Brouwer_order |
In mathematics , the Kleene–Rosser paradox is a paradox that shows that certain systems of formal logic are inconsistent , in particular the version of Haskell Curry 's combinatory logic introduced in 1930, and Alonzo Church 's original lambda calculus , introduced in 1932–1933, both originally intended as systems of f... | https://en.wikipedia.org/wiki/Kleene–Rosser_paradox |
In mathematics , a Klein geometry is a type of geometry motivated by Felix Klein in his influential Erlangen program . More specifically, it is a homogeneous space X together with a transitive action on X by a Lie group G , which acts as the symmetry group of the geometry.
For background and motivation see the article... | https://en.wikipedia.org/wiki/Klein_geometry |
The Klein–Gordon equation ( Klein–Fock–Gordon equation or sometimes Klein–Gordon–Fock equation ) is a relativistic wave equation , related to the Schrödinger equation . It is named after Oskar Klein and Walter Gordon . It is second-order in space and time and manifestly Lorentz-covariant . It is a differential equation... | https://en.wikipedia.org/wiki/Klein–Gordon_equation |
In particle physics , the Klein–Nishina formula gives the differential cross section (i.e. the "likelihood" and angular distribution) of photons scattered from a single free electron , calculated in the lowest order of quantum electrodynamics . It was first derived in 1928 by Oskar Klein and Yoshio Nishina , constituti... | https://en.wikipedia.org/wiki/Klein–Nishina_formula |
A Klemperer rosette is a gravitational system of (optionally) alternating heavier and lighter bodies orbiting in a symmetrical pattern around a common barycenter . It was first described by W.B. Klemperer in 1962, [ 1 ] and is a special case of a central configuration .
Klemperer described rosette systems as follows:
... | https://en.wikipedia.org/wiki/Klemperer_rosette |
In biology, a klepton (abbreviated kl.) and synklepton (abbreviated sk.) is a species that requires input from another biological taxon (normally from a species which is closely related to the kleptonic species) to complete its reproductive cycle . [ 1 ] Specific types of kleptons are zygokleptons , which reproduce by ... | https://en.wikipedia.org/wiki/Klepton |
Kleptopharmacophagy is a term used for describing the ecological relationship between two different organisms, where the first is stealing the second's chemical compounds and consuming them. [ 1 ] [ 2 ] This scientific term was proposed by Australian, Singaporean, and American biologists in September 2021 in an article... | https://en.wikipedia.org/wiki/Kleptopharmacophagy |
Kleptoplasty or kleptoplastidy is a process in symbiotic relationships whereby plastids , notably chloroplasts from algae , are sequestered by the host. The word is derived from Kleptes (κλέπτης) which is Greek for thief . The alga is eaten normally and partially digested, leaving the plastid intact. The plastids are m... | https://en.wikipedia.org/wiki/Kleptoplasty |
A kleptoprotein is a protein which is not encoded in the genome of the organism which uses it, but instead is obtained through diet from a prey organism. Importantly, a kleptoprotein must maintain its function and be mostly or entirely undigested, drawing a distinction from proteins that are digested for nutrition, whi... | https://en.wikipedia.org/wiki/Kleptoprotein |
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