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The World Uranium Hearing was held in Salzburg, Austria in September 1992. [ 1 ] Anti-nuclear speakers from all continents, including indigenous speakers and scientists, testified to the health and environmental problems of uranium mining and processing, nuclear power , nuclear weapons , nuclear tests , and radioactive... | https://en.wikipedia.org/wiki/World_Uranium_Hearing |
The world line (or worldline ) of an object is the path that an object traces in 4- dimensional spacetime . It is an important concept of modern physics , and particularly theoretical physics .
The concept of a "world line" is distinguished from concepts such as an " orbit " or a " trajectory " (e.g., a planet's orbit... | https://en.wikipedia.org/wiki/World_line |
In gravitation theory , a world manifold endowed with some Lorentzian pseudo-Riemannian metric and an associated space-time structure is a space-time . Gravitation theory is formulated as classical field theory on natural bundles over a world manifold.
A world manifold is a four-dimensional orientable real smooth mani... | https://en.wikipedia.org/wiki/World_manifold |
Worldchanging: A User's Guide for the 21st Century is a book about environmental concerns and practical actual responses. It is a compendium of the solutions, ideas and inventions emerging today for building a sustainable , livable, prosperous future. [ 1 ] In November 2006, Worldchanging published a survey of global i... | https://en.wikipedia.org/wiki/Worldchanging_(book) |
The worm-like chain ( WLC ) model in polymer physics is used to describe the behavior of polymers that are semi-flexible: fairly stiff with successive segments pointing in roughly the same direction, and with persistence length within a few orders of magnitude of the polymer length. The WLC model is the continuous vers... | https://en.wikipedia.org/wiki/Worm-like_chain |
WormBook is an open access, comprehensive collection of original, peer-reviewed chapters covering topics related to the biology of the nematode worm Caenorhabditis elegans (C. elegans) . WormBook also includes WormMethods, an up-to-date collection of methods and protocols for C. elegans researchers. [ 1 ] [ 2 ] [ 3 ] [... | https://en.wikipedia.org/wiki/WormBook |
Worm is a self-published web serial by John C. "Wildbow" McCrae and the first installment of the Parahumans series , known for subverting and playing with common tropes and themes of superhero fiction . It was McCrae's first novel. [ 4 ] Worm features a bullied teenage girl, Taylor Hebert, who develops the superpower t... | https://en.wikipedia.org/wiki/Worm_(web_serial) |
A wormhole is a hypothetical structure that connects disparate points in spacetime . It may be visualized as a tunnel with two ends at separate points in spacetime (i.e., different locations, different points in time, or both). Wormholes are based on a special solution of the Einstein field equations . [ 1 ] More preci... | https://en.wikipedia.org/wiki/Wormhole |
Wormwood ( Ancient Greek : ἀψίνθιον ( apsinthion) αψινθος ( apsinthos ) is a prophesied star or angel [ 1 ] which appears in the Book of Revelation .
Wormwood, translated from αψινθος (Apsinthos) and לענה ( la'anah ), is historically believed to refer to a plant of the genus Artemisia , likely either A. absinthium or ... | https://en.wikipedia.org/wiki/Wormwood_(Bible) |
A Woronin body (named after the Russian botanist Mikhail Stepanovich Woronin [ 2 ] ) is an organelle found near the septae that divide hyphal compartments in filamentous Ascomycota . It is formed by budding from conventional peroxisomes. [ 3 ] Woronin bodies are present in the fungal class Pezizomycotina, which include... | https://en.wikipedia.org/wiki/Woronin_body |
The worship of heavenly bodies is the veneration of stars (individually or together as the night sky), the planets, or other astronomical objects as deities , or the association of deities with heavenly bodies. In anthropological literature these systems of practice may be referred to as astral cults .
The most notabl... | https://en.wikipedia.org/wiki/Worship_of_heavenly_bodies |
The worst-case analysis regulation [ 1 ] was promulgated in 1979 by the US Council on Environmental Quality (CEQ). The regulation is one of many implementing the National Environmental Policy Act of 1969 [ 2 ] and it sets out the formal procedure a US government agency must follow when confronted with gaps in relevant ... | https://en.wikipedia.org/wiki/Worst-case_analysis |
Worst case analysis was, from 1978 until 1986, a doctrine under 40 U.S.C. § 1502.22 which mandated that an environmental impact statement include such an analysis: [ 1 ]
When an agency is evaluating significant adverse effects on the human environment in an environmental impact statement and there are gaps in relevant... | https://en.wikipedia.org/wiki/Worst_case_analysis |
Wound contracture is a process that may occur during wound healing when an excess of wound contraction , a normal healing process, leads to physical deformity characterized by skin constriction and functional limitations. [ 1 ] [ 2 ] [ 3 ] Wound contractures may be seen after serious burns and may occur on the palms, t... | https://en.wikipedia.org/wiki/Wound_contracture |
Wound healing refers to a living organism's replacement of destroyed or damaged tissue by newly produced tissue. [ 1 ]
In undamaged skin, the epidermis (surface, epithelial layer) and dermis (deeper, connective layer) form a protective barrier against the external environment. When the barrier is broken, a regulated s... | https://en.wikipedia.org/wiki/Wound_healing |
A wound healing assay is a laboratory technique used to study cell migration and cell–cell interaction . This is also called a scratch assay because it is done by making a scratch on a cell monolayer and capturing images at regular intervals by time lapse microscopy. [ 1 ] [ 2 ]
It is specifically a 2D cell migration... | https://en.wikipedia.org/wiki/Wound_healing_assay |
Wouthuysen–Field coupling , or the Wouthuysen–Field effect , is a mechanism that couples the excitation temperature , also called the spin temperature, of neutral hydrogen to Lyman-alpha radiation. This coupling plays a role in producing a difference in the temperature of neutral hydrogen and the cosmic microwave backg... | https://en.wikipedia.org/wiki/Wouthuysen–Field_coupling |
Measurement of wow and flutter is carried out on audio tape machines, cassette recorders and players, and other analog recording and reproduction devices with rotary components (e.g. movie projectors, turntables (vinyl recording), etc.) This measurement quantifies the amount of 'frequency wobble' (caused by speed fluct... | https://en.wikipedia.org/wiki/Wow_and_flutter_measurement |
Woz U is a company founded by Apple co-founder Steve Wozniak that focuses on technical education for independent students, and offers curriculum to universities and organizations to upskill their employees. [ 1 ] [ 2 ] [ 3 ] [ 4 ]
WOZ U was founded in October 2017 by Apple co-founder Steve Wozniak. Wozniak was inspir... | https://en.wikipedia.org/wiki/Woz_U |
In coding theory , the Wozencraft ensemble is a set of linear codes in which most of codes satisfy the Gilbert-Varshamov bound . It is named after John Wozencraft , who proved its existence. The ensemble is described by Massey (1963) , who attributes it to Wozencraft. Justesen (1972) used the Wozencraft ensemble as the... | https://en.wikipedia.org/wiki/Wozencraft_ensemble |
Wreck Racing is a Georgia Tech automotive competition team, based in the Woodruff School of Mechanical Engineering . The team is composed of undergraduate and graduate students from the various schools within Georgia Tech and is based in the Student Competition Center on the North edge of Tech's Atlanta campus. The t... | https://en.wikipedia.org/wiki/Wreck_Racing |
The Wrigley Trophy is an award given for motorboats . It was awarded as early as 1912 with a $1,500 cash prize. In 1912 the award was disputed when James A. Pugh contested the win by J. Stuart Blackton . He argued that Baby Reliance II was allowed a late entry and had already missed two rounds of competition. [ 1 ] | https://en.wikipedia.org/wiki/Wrigley_Trophy |
A wrinklon is a type of quasiparticle introduced in the study of wrinkling behavior in thin sheet materials, such as graphene or fabric . It is a localized excitation corresponding to wrinkles in a constrained two dimensional system. [ 1 ]
It represents a localized region where two wrinkles in the material merge into ... | https://en.wikipedia.org/wiki/Wrinklon |
Wristbands are encircling strips worn on the wrist or lower forearm. The term may refer to a bracelet -like band, similar to that of a wristwatch , to the cuff or other part of a sleeve that covers the wrist, or decorative or functional bands worn on the wrist for many different reasons. Wristbands are often worn and ... | https://en.wikipedia.org/wiki/Wristband |
A write buffer is a type of data buffer that can be used to hold data being written from the cache to main memory or to the next cache in the memory hierarchy to improve performance and reduce latency . It is used in certain CPU cache architectures like Intel's x86 and AMD64. [ 1 ] In multi-core systems, write buffers ... | https://en.wikipedia.org/wiki/Write_buffer |
A wrong-way driver warning is an advanced driver-assistance system introduced in 2010 [ 1 ] [ 2 ] to prevent wrong-way driving .
In the case of signs imposing access restrictions, through the wrong-way driver warning function an acoustic warning is emitted together with a visual warning in the instrument cluster – mak... | https://en.wikipedia.org/wiki/Wrong-way_driving_warning |
Wenjun Wu 's method is an algorithm for solving multivariate polynomial equations introduced in the late 1970s by the Chinese mathematician Wen-Tsun Wu . This method is based on the mathematical concept of characteristic set introduced in the late 1940s by J.F. Ritt . It is fully independent of the Gröbner basis method... | https://en.wikipedia.org/wiki/Wu's_method_of_characteristic_set |
WuXi AppTec ( WuXi is pronounced as Wu-shee ) is a global pharmaceutical , biopharmaceutical , and medical device company.
WuXi PharmaTech was founded in December 2000 in Shanghai by organic chemist Ge Li . [ 1 ] [ 2 ]
The company opened chemistry facilities in Tianjin in 2007. In 2008, WuXi PharmaTech acquired AppTe... | https://en.wikipedia.org/wiki/WuXi_AppTec |
The Wulff construction is a method to determine the equilibrium shape of a droplet or crystal of fixed volume inside a separate phase (usually its saturated solution or vapor). Energy minimization arguments are used to show that certain crystal planes are preferred over others, giving the crystal its shape. It is of fu... | https://en.wikipedia.org/wiki/Wulff_construction |
The Wulff–Dötz reaction (also known as the Dötz reaction or the benzannulation reaction of the Fischer carbene complexes) is the chemical reaction of an aromatic or vinylic alkoxy pentacarbonyl chromium carbene complex with an alkyne and carbon monoxide to give a Cr(CO) 3 -coordinated substituted phenol . [ 1 ] [ 2 ] [... | https://en.wikipedia.org/wiki/Wulff–Dötz_reaction |
In organic chemistry , the Wurtz reaction , named after Charles Adolphe Wurtz , is a coupling reaction in which two alkyl halides are treated with sodium metal to form a higher alkane.
The reaction is of little value except for intramolecular versions, such as 1,6-dibromohexane + 2 Na → cyclohexane + 2 NaBr.
A relate... | https://en.wikipedia.org/wiki/Wurtz_reaction |
The Wurtz–Fittig reaction is the chemical reaction of an aryl halide , alkyl halides , and sodium metal to give substituted aromatic compounds. [ 1 ] Following the work of Charles Adolphe Wurtz on the sodium-induced coupling of alkyl halides (the Wurtz reaction ), Wilhelm Rudolph Fittig extended the approach to the cou... | https://en.wikipedia.org/wiki/Wurtz–Fittig_reaction |
In topology and high energy physics , the Wu–Yang dictionary refers to the mathematical identification that allows back-and-forth translation between the concepts of gauge theory and those of differential geometry . The dictionary appeared in 1975 in an article by Tai Tsun Wu and C. N. Yang comparing electromagnetism... | https://en.wikipedia.org/wiki/Wu–Yang_dictionary |
In crystallography , a Wyckoff position is any point in a set of points whose site symmetry groups (see below) are all conjugate subgroups one of another. [ 1 ] Crystallography tables give the Wyckoff positions for different space groups . [ 2 ]
The Wyckoff positions are named after Ralph Wyckoff , an American X-ray c... | https://en.wikipedia.org/wiki/Wyckoff_positions |
The Wyman-Gordon 50,000-ton forging press is a forging press located at the Wyman-Gordon Grafton Plant that was built as part of the Heavy Press Program by the United States Air Force . It was manufactured by Loewy Hydropress of Pittsburgh, Pennsylvania and began operation in October, 1955. [ 1 ] | https://en.wikipedia.org/wiki/Wyman-Gordon_50,000_ton_forging_press |
The Wyss [ 1 ] Center is a not-for-profit neurotechnology research foundation in Geneva, Switzerland. [ 2 ]
The center was founded by Hansjörg Wyss , who previously created the Wyss Institute for Biologically Inspired Engineering in the United States. The founding director of the Wyss Center was neuroscientist Profess... | https://en.wikipedia.org/wiki/Wyss_Center_for_Bio_and_Neuroengineering |
In geometry , the Wythoff symbol is a notation representing a Wythoff construction of a uniform polyhedron or plane tiling within a Schwarz triangle . It was first used by Coxeter , Longuet-Higgins and Miller in their enumeration of the uniform polyhedra. Later the Coxeter diagram was developed to mark uniform polytope... | https://en.wikipedia.org/wiki/Wythoff_symbol |
The Wöhler synthesis is the conversion of ammonium cyanate into urea . This chemical reaction was described in 1828 by Friedrich Wöhler . [ 1 ] It is often cited as the starting point of modern organic chemistry . Although the Wöhler reaction concerns the conversion of ammonium cyanate, this salt appears only as an (un... | https://en.wikipedia.org/wiki/Wöhler_synthesis |
Wüstite ( Fe O , sometimes also written as Fe 0.95 O) is a mineral form of mostly iron(II) oxide found with meteorites and native iron . It has a grey colour with a greenish tint in reflected light . Wüstite crystallizes in the isometric-hexoctahedral crystal system in opaque to translucent metallic grains. It has a Mo... | https://en.wikipedia.org/wiki/Wüstite |
Włodzimierz Kołos (1928 - 1996) was a Polish chemist and physicist who was one of the founders of modern quantum chemistry , and pioneered accurate calculations on the electronic structure of molecules. [ 1 ]
Kołos was born on September 6, 1928, in Pinsk . He received his M.Sc. in chemistry in 1950 and began his acade... | https://en.wikipedia.org/wiki/Włodzimierz_Kołos |
Włodzimierz Kuperberg (born January 19, 1941) is a professor of mathematics at Auburn University , with research interests in geometry and topology .
Although Kuperberg is Polish-American , he was born in what is now Belarus , where his parents and older siblings had traveled east to escape World War II . In 1946, the... | https://en.wikipedia.org/wiki/Włodzimierz_Kuperberg |
X-PLOR is a computer software package for computational structural biology originally developed by Axel T. Brunger at Yale University . It was first published in 1987 as an offshoot of CHARMM - a similar program that ran on supercomputers made by Cray Inc. It is used in the fields of X-ray crystallography and nuclear m... | https://en.wikipedia.org/wiki/X-PLOR |
X-Ray is a reference tool, introduced in September 2011, [ 1 ] that is incorporated in the Amazon Kindle Touch and later models, Kindle apps for mobile platforms, Amazon Fire tablets, Fire TVs and Amazon Prime Video streaming apps, and the discontinued Fire Phone . On the Kindle, general reference information is prelo... | https://en.wikipedia.org/wiki/X-Ray_(Amazon) |
The X-Ray Imaging and Spectroscopy Mission ( XRISM , pronounced 'crism' [ 3 ] or 'krizz-em', [ 4 ] as if the X was a chi ), is an X-ray space telescope . It is a mission of the Japan Aerospace Exploration Agency (JAXA) in partnership with NASA and ESA , intended to study galaxy clusters , outflows from galaxy nuclei , ... | https://en.wikipedia.org/wiki/X-Ray_Imaging_and_Spectroscopy_Mission |
X-bracing is a structural engineering practice where the lateral load on a building is reduced by transferring the load into the exterior columns.
X-bracing was used in the construction of the 1908 Singer Building , then the tallest building in the world. [ 1 ]
Some skyscrapers by engineer Fazlur Khan , such as the 1... | https://en.wikipedia.org/wiki/X-bracing |
The X-factor in astrophysics, often labeled X CO , is an empirically determined proportionality constant which converts carbon monoxide (CO) emission line brightness to molecular hydrogen (H 2 ) mass. The term X-factor was coined in a 1983 paper titled "Gamma-rays from atomic and molecular gas in the first galactic qua... | https://en.wikipedia.org/wiki/X-factor_(astrophysics) |
X-inactivation (also called Lyonization , after English geneticist Mary Lyon ) is a process by which one of the copies of the X chromosome is inactivated in therian female mammals . The inactive X chromosome is silenced by being packaged into a transcriptionally inactive structure called heterochromatin . As nearly all... | https://en.wikipedia.org/wiki/X-inactivation |
Main Article : Sex linkage
X-linked recessive inheritance is a mode of inheritance in which a mutation in a gene on the X chromosome causes the phenotype to be always expressed in males (who are necessarily hemizygous for the gene mutation because they have one X and one Y chromosome ) and in females who are homozygou... | https://en.wikipedia.org/wiki/X-linked_recessive_inheritance |
X-ray absorption fine structure (XAFS) is a specific structure observed in X-ray absorption spectroscopy (XAS). By analyzing the XAFS, information can be acquired on the local structure and on the unoccupied local electronic states.
The atomic X-ray absorption spectrum (XAS) of a core-level in an absorbing atom is sep... | https://en.wikipedia.org/wiki/X-ray_absorption_fine_structure |
X-ray absorption near edge structure ( XANES ), also known as near edge X-ray absorption fine structure ( NEXAFS ), is a type of absorption spectroscopy that indicates the features in the X-ray absorption spectra ( XAS ) of condensed matter due to the photoabsorption cross section for electronic transitions from an ato... | https://en.wikipedia.org/wiki/X-ray_absorption_near_edge_structure |
X-ray absorption spectroscopy (XAS) is a set of advanced techniques used for probing the local environment of matter at atomic level and its electronic structure. [ 1 ] The experiments require access to synchrotron radiation facilities for their intense and tunable X-ray beams. Samples can be in the gas phase, solution... | https://en.wikipedia.org/wiki/X-ray_absorption_spectroscopy |
X-ray astronomy is an observational branch of astronomy which deals with the study of X-ray observation and detection from astronomical objects . X-radiation is absorbed by the Earth's atmosphere , so instruments to detect X-rays must be taken to high altitude by balloons , sounding rockets , and satellites . X-ray as... | https://en.wikipedia.org/wiki/X-ray_astronomy |
X‑ray birefringence imaging [ 1 ] (XBI) can be considered the X‑ray analogue of the polarizing optical microscope . XBI uses linearly polarized X-rays with an energy tuned to an elemental absorption edge . The tuned X-rays interact solely with the absorbing element, thus allowing the local anisotropy of the bonding env... | https://en.wikipedia.org/wiki/X-ray_birefringence_imaging |
X-ray crystal truncation rod scattering is a powerful method in surface science , based on analysis of surface X-ray diffraction (SXRD) patterns from a crystalline surface.
For an infinite crystal , the diffracted pattern is concentrated in Dirac delta function like Bragg peaks . Presence of crystalline surfaces resul... | https://en.wikipedia.org/wiki/X-ray_crystal_truncation_rod |
X-ray crystallography is the experimental science of determining the atomic and molecular structure of a crystal , in which the crystalline structure causes a beam of incident X-rays to diffract in specific directions. By measuring the angles and intensities of the X-ray diffraction , a crystallographer can produce a t... | https://en.wikipedia.org/wiki/X-ray_crystallography |
X-ray diffraction is a generic term for phenomena associated with changes in the direction of X-ray beams due to interactions with the electrons around atoms. It occurs due to elastic scattering , when there is no change in the energy of the waves. The resulting map of the directions of the X-rays far from the sample i... | https://en.wikipedia.org/wiki/X-ray_diffraction |
X-ray diffraction computed tomography is an experimental technique that combines X-ray diffraction with the computed tomography data acquisition approach. X-ray diffraction (XRD) computed tomography (CT) was first introduced in 1987 by Harding et al. [ 1 ] using a laboratory diffractometer and a monochromatic X-ray pen... | https://en.wikipedia.org/wiki/X-ray_diffraction_computed_tomography |
In astronomy , an X-ray flash is a transient emission of X-rays originating in a distant galaxy , probably caused by a hypernova . They have been observed to last 90 to 200 seconds. [ 1 ]
Nearly all hypernovae are detected via (higher-energy) gamma-ray photons, at distances too great for any associated X-ray emission... | https://en.wikipedia.org/wiki/X-ray_flash_(astronomy) |
X-ray fluorescence ( XRF ) is the emission of characteristic "secondary" (or fluorescent) X-rays from a material that has been excited by being bombarded with high-energy X-rays or gamma rays . The phenomenon is widely used for elemental analysis and chemical analysis , particularly in the investigation of metals , gla... | https://en.wikipedia.org/wiki/X-ray_fluorescence |
X-ray fluorescence holography ( XFH ) is a holography method with atomic resolution based on atomic fluorescence . [ 1 ] It is a relatively new technique that benefits greatly from the coherent high-power X-rays available from synchrotron sources, such as the Japanese SPring-8 facility.
Fluorescent X-rays are scattere... | https://en.wikipedia.org/wiki/X-ray_fluorescence_holography |
In radiography , X-ray microtomography uses X-rays to create cross-sections of a physical object that can be used to recreate a virtual model ( 3D model ) without destroying the original object. It is similar to tomography and X-ray computed tomography . The prefix micro- (symbol: μ) is used to indicate that the pixel ... | https://en.wikipedia.org/wiki/X-ray_microtomography |
X-ray photoelectron spectroscopy ( XPS ) is a surface-sensitive quantitative spectroscopic technique that measures the very topmost 50-60 atoms, 5-10 nm of any surface. It belongs to the family of photoemission spectroscopies in which electron population spectra are obtained by irradiating a material with a beam of X-r... | https://en.wikipedia.org/wiki/X-ray_photoelectron_spectroscopy |
X-ray scattering techniques are a family of analytical techniques which reveal information about the crystal structure , chemical composition, and physical properties of materials and thin films. These techniques are based on observing the scattered intensity of an X-ray beam hitting a sample as a function of incident ... | https://en.wikipedia.org/wiki/X-ray_scattering_techniques |
The X-ray standing wave (XSW) technique can be used to study the structure of surfaces and interfaces with high spatial resolution and chemical selectivity. Pioneered by B.W. Batterman in the 1960s, [ 1 ] the availability of synchrotron light has stimulated the application of this interferometric technique to a wide ra... | https://en.wikipedia.org/wiki/X-ray_standing_waves |
X-ray emission occurs from many celestial objects. These emissions can have a pattern , occur intermittently, or as a transient astronomical event . In X-ray astronomy many sources have been discovered by placing an X-ray detector above the Earth 's atmosphere. Often, the first X-ray source discovered in many constella... | https://en.wikipedia.org/wiki/X-ray_transient |
X/Open group (also known as the Open Group for Unix Systems [ 1 ] [ 2 ] and incorporated in 1987 as X/Open Company, Ltd. [ 3 ] [ 4 ] ) was a consortium founded by several European UNIX systems manufacturers in 1984 [ 3 ] [ 5 ] to identify and promote open standards in the field of information technology . More specific... | https://en.wikipedia.org/wiki/X/Open |
X10 is a protocol for communication among electronic devices used for home automation ( domotics ). It primarily uses power line wiring for signaling and control, where the signals involve brief radio frequency bursts representing digital information. A wireless radio -based protocol transport is also defined.
X10 was... | https://en.wikipedia.org/wiki/X10_(industry_standard) |
The X:A ratio is the ratio between the number of X chromosomes and the number of sets of autosomes in an organism . This ratio is used primarily for determining the sex of some species, such as drosophila flies and the C. elegans nematode. [ 1 ] The first use of this ratio for sex determination is ascribed to Victor M.... | https://en.wikipedia.org/wiki/X:A_ratio |
XAM , or the eXtensible Access Method , is a standard for computer data storage developed by IBM and EMC and maintained by the Storage Networking Industry Association (SNIA). [ 1 ] [ 2 ] It was ratified as an ANSI standard by early 2011. [ 3 ] [ 4 ] XAM is an API for fixed content aware storage devices. XAM replaces th... | https://en.wikipedia.org/wiki/XAM |
xAP is an open protocol used for home automation and supports integration of telemetry and control devices primarily within the home. Common communications networks include RS-232 , RS-485 , Ethernet and wireless . xAP protocol always uses broadcast for sending the messages. All the receivers listens to the message and... | https://en.wikipedia.org/wiki/XAP_Home_Automation_protocol |
XCMS Online is a cloud version of the original eXtensible Computational Mass Spectrometry (XCMS) [ 1 ] [ 2 ] [ 3 ] technology (a bioinformatics software designed for statistical analysis of mass spectrometry data), created by the Siuzdak Lab at Scripps Research . XCMS introduced the concept of nonlinear retention time ... | https://en.wikipedia.org/wiki/XCMS_Online |
xDNA (also known as expanded DNA or benzo-homologated DNA ) is a size-expanded nucleotide system synthesized from the fusion of a benzene ring and one of the four natural bases: adenine , guanine , cytosine , and thymine . [ 1 ] This size expansion produces an 8 letter alphabet which has a larger information storage ca... | https://en.wikipedia.org/wiki/XDNA |
XDrawChem is a free software program for drawing chemical structural formulas , available for Unix and macOS . It is distributed under the GNU GPL . In Microsoft Windows this program is called WinDrawChem. [ 1 ] | https://en.wikipedia.org/wiki/XDrawChem |
XEUS ( X-ray Evolving Universe Spectroscopy ) was a space observatory plan developed by the European Space Agency (ESA) as a successor to the successful XMM-Newton X-ray satellite telescope . It was merged to the International X-ray Observatory (IXO) around 2008, but as that project ran into issues in 2011, the ESA com... | https://en.wikipedia.org/wiki/XEUS |
The XGC88000 crawler crane is a class of extremely large ultraheavy crawler crane made by XCMG . With a lifting capacity of 3,600 [ 5 ] to 4,000 tons, [ 6 ] a total boom length of 144 meters [ 3 ] and a total gross weight of 5,350 tons. [ 3 ] The XGC88000 crawler crane became the largest tracked mobile crane in the wor... | https://en.wikipedia.org/wiki/XGC88000_crawler_crane |
XJB-5-131 is a synthetic antioxidant . In a mouse model of Huntington's disease , it has been shown to reduce oxidative damage to mitochondrial DNA , and to maintain mitochondrial DNA copy number. [ 1 ] XJB-5-131 also strongly protects against ferroptosis , a form of iron-dependent regulated cell death. [ 2 ] | https://en.wikipedia.org/wiki/XJB-5-131 |
XL-413 is a drug which acts as a selective inhibitor of the enzyme cell division cycle 7-related protein kinase (CDC7). It is being researched for the treatment of some forms of cancer , and also has applications in genetic engineering . [ 1 ] [ 2 ] [ 3 ] [ 4 ]
This pharmacology -related article is a stub . You can he... | https://en.wikipedia.org/wiki/XL-413 |
XMD is a classical molecular dynamics software designed to
simulate problems related to materials science . The code was
developed by Jon Rifkin of University of Connecticut and is being
distributed under GNU General Public License .
Source code is available in C and can be compiled using POSIX thread
functions to tak... | https://en.wikipedia.org/wiki/XMD |
XMDF ( ever-eXtending Mobile Document Format ) is a file format for viewing electronic books . It was originally developed by Sharp Corporation for its Zaurus platform. It is primarily used in Japan . [ 1 ]
This software article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/XMDF_(E-book_format) |
The Extended Metadata Registry (XMDR) is a project proposing and testing a set of extensions to the ISO/IEC 11179 metadata registry specifications that deal with the development of improved standards and technology for storing and retrieving the semantics of data elements , terminologies , and concept structures in met... | https://en.wikipedia.org/wiki/XMDR |
XMLTV is an XML based file format for describing TV listings , which has been introduced in 2002. IPTV providers use XMLTV as the base reference template in their systems, and extend it internally according to their business needs. [ 1 ] [ 2 ] [ 3 ]
This computing article is a stub . You can help Wikipedia by expandin... | https://en.wikipedia.org/wiki/XMLTV |
XMM-Newton , also known as the High Throughput X-ray Spectroscopy Mission and the X-ray Multi-Mirror Mission , is an X-ray space observatory launched by the European Space Agency in December 1999 on an Ariane 5 rocket. It is the second cornerstone mission of ESA's Horizon 2000 programme. Named after physicist and astro... | https://en.wikipedia.org/wiki/XMM-Newton |
The XMM Cluster Survey ( XCS ) is a serendipitous X-ray galaxy cluster survey being conducted using archival data taken by ESA’s XMM-Newton satellite. Galaxy clusters trace the large scale structure of the universe , and their number density evolution with redshift provides a way to measure cosmological parameters, ind... | https://en.wikipedia.org/wiki/XMM_Cluster_Survey |
XMPP Standards Foundation ( XSF ) is the foundation in charge of the standardization of the protocol extensions of XMPP , the open standard of instant messaging and presence of the IETF .
The XSF was originally called the Jabber Software Foundation ( JSF ). The Jabber Software Foundation was originally established to ... | https://en.wikipedia.org/wiki/XMPP_Standards_Foundation |
The XO Project is an international team of amateur and professional astronomers tasked with identifying extrasolar planets. They are led by Peter R. McCullough of the Space Telescope Science Institute . [ 1 ] It is primarily funded by NASA's Origins Program and the Director's Discretionary Fund of the Space Telescope S... | https://en.wikipedia.org/wiki/XO_Project |
XPLM Publisher is a commercial authoring and publishing software developed and sold by XPLM . It combines the Oxygen XML Editor with Oracle Agile PLM and helps technical writers to create, manage, and publish technical product documentation (e.g., user guides ) in various formats and layouts. The XPLM Publisher follows... | https://en.wikipedia.org/wiki/XPLM_Publisher |
xPL is an open protocol intended to permit the control and monitoring of home automation devices. The primary design goal of xPL is to provide a rich set of features and functionality, whilst maintaining an elegant, uncomplicated message structure. The protocol includes complete discovery and auto-configuration capabil... | https://en.wikipedia.org/wiki/XPL_Protocol |
XPath 3 is the latest version of the XML Path Language , a query language for selecting nodes in XML documents. It supersedes XPath 1.0 and XPath 2.0 .
XPath 3.0 became a W3C Recommendation on 8 April 2014, while XPath 3.1 became a W3C Recommendation on 21 March 2017.
Compared to XPath 2.0 , XPath 3.0 adds the follow... | https://en.wikipedia.org/wiki/XPath_3 |
The X-ray Polarimeter Satellite ( XPoSat ) is an Indian Space Research Organisation (ISRO)-manufactured space observatory to study polarisation of cosmic X-rays . It was launched on 1 January 2024 on a PSLV rocket, [ 8 ] and it has an expected operational lifespan of at least five years. [ 9 ] [ 10 ]
The telescope was... | https://en.wikipedia.org/wiki/XPoSat |
Excess-3 , 3-excess [ 1 ] [ 2 ] [ 3 ] or 10-excess-3 binary code (often abbreviated as XS-3 , [ 4 ] 3XS [ 1 ] or X3 [ 5 ] [ 6 ] ), shifted binary [ 7 ] or Stibitz code [ 1 ] [ 2 ] [ 8 ] [ 9 ] (after George Stibitz , [ 10 ] who built a relay-based adding machine in 1937 [ 11 ] [ 12 ] ) is a self-complementary binary-cod... | https://en.wikipedia.org/wiki/XS-3_code |
XT9 is a text predicting and correcting system for mobile devices with full keyboards rather than the 3x4 keypad on old phones. [ 1 ] It was originally developed by Tegic Communications , now part of Nuance Communications . [ 2 ] It was originally created for devices with styluses , but is now commonly used for touch s... | https://en.wikipedia.org/wiki/XT9 |
XTX is a computer-on-module (COM) standard for x86 -based embedded devices . XTX adds PCI-Express , SATA , and LPC capabilities. The standard was promulgated by Advantech Corporation, Ampro, [ 1 ] and Congatec .
This computer hardware article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/XTX |
XView is a widget toolkit from Sun Microsystems introduced in 1988. It provides an OPEN LOOK user interface for X Window System applications, with an object-oriented application programming interface (API) for the C programming language . Its interface, controls, and layouts are very close to that of the earlier SunVi... | https://en.wikipedia.org/wiki/XView |
XW10508 is an orally active prodrug of esketamine , an NMDA receptor antagonist , which is under development for the treatment of major depressive disorder and chronic pain . [ 1 ] [ 4 ] [ 2 ] [ 3 ] It is taken by mouth . [ 1 ] [ 2 ] [ 3 ]
The drug is a novel esketamine analogue and conjugate that acts as a prodrug of... | https://en.wikipedia.org/wiki/XW10508 |
The XYZ file format is a chemical file format . There is no formal standard and several variations exist, but a typical XYZ format specifies the molecule geometry by giving the number of atoms with Cartesian coordinates that will be read on the first line, a comment on the second, and the lines of atomic coordinates in... | https://en.wikipedia.org/wiki/XYZ_file_format |
In combinatorial mathematics, the XYZ inequality , also called the Fishburn–Shepp inequality , is an inequality for the number of linear extensions of finite partial orders . The inequality was conjectured by Ivan Rival and Bill Sands in 1981. It was proved by Lawrence Shepp in Shepp (1982) . An extension was given by ... | https://en.wikipedia.org/wiki/XYZ_inequality |
In February 2024, a malicious backdoor was introduced to the Linux build of the xz utility within the liblzma library in versions 5.6.0 and 5.6.1 by an account using the name "Jia Tan". [ b ] [ 4 ] The backdoor gives an attacker who possesses a specific Ed448 private key remote code execution through OpenSSH on the aff... | https://en.wikipedia.org/wiki/XZ_Utils_backdoor |
In particle physics , the X charge (or simply X ) is a conserved quantum number associated with the SO(10) grand unification theory . It is thought to be conserved in strong , weak , electromagnetic , gravitational , and Higgs interactions. Because the X charge is related to the weak hypercharge , it varies depending o... | https://en.wikipedia.org/wiki/X_(charge) |
The X Input Method (or XIM ) was the original input method framework for the X Window System . [ 1 ]
It predates IBus , Fcitx , SCIM , uim and IIIMF . The specification [ 2 ] is published most recently in 1994 by (and copyright held by) the X Consortium . Although rarely used today, XIM is historically notable and has... | https://en.wikipedia.org/wiki/X_Input_Method |
X hyperactivation refers to the process in Drosophila by which genes on the X chromosome in male flies become twice as active as genes on the X chromosome in female flies.
In Drosophila , there is a stark difference between the X and Y chromosome as most genetic material has been lost on the Y chromosome. [ 1 ] Due to... | https://en.wikipedia.org/wiki/X_hyperactivation |
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