Made VirusLikeParticle Vaccine against Avian H5N1 Influenza volume 5 issue 12 pages e15559 doi ... title Modeling the competition between aggregation and self assembly during viruslikeparticle processing ... Vaccines DEFAULTSORT VirusLikeParticle Category Viral structural proteins Category Microbiology de Viruslikeparticle es Part cula como virus fr Viruslikeparticle it Particella virus simile ...Viruslike particles resemble virus es, but are non infectious because they do not contain any viral ... in the self assembly of viruslike particles VLPs . VLPs derived from the Hepatitis B virus and composed ... Z, Mason H title Viruslike particles production in green plants journal Methods volume 40 issue ... of viruslike particles for gene transfer journal Current Opinion in Molecular Therapeutics volume ... free preparations and may be classified as viruslike particles. These VLPs are important in phytopathology ... A, Doranz BJ, Rucker J title Use of viruslike particles as quantitative probes of membrane protein ... bavari VLP press release.pdf title Ebola Viruslike Particles Prevent Lethal Ebola Virus Infection ... ref More recently, VLPs have been produced from components of a wide variety of virus families including Parvoviridae e.g. adeno associated virus , Retroviridae e.g. HIV , and Flaviviridae e.g. Hepatitis C virus . VLPs can be produced in a variety of cell culture systems including mammalian cell ... virus. ref name Akahata Cite journal author Akahata W, Yang ZY, Andersen H, et al. title A VLP vaccine for epidemic Chikungunya virus protects non human primates against infection journal Nature Medicine ... that VLP vaccines against influenza virus could provide stronger and longer lasting protection against ... accessdate June 8, 2010 ref Production may begin as soon as the genetic sequence of the virus strain ... both the Influenza A virus subtype H5N1 and the 1918 flu pandemic . Citation needed date June ... rstb.1976.0102 author Adolph KW, Butler PJG title Assembly of a spherical plant virus journal ... more details
can be considered particles next to them The term particle is usually applied differently to three class of sizes. The term macroscopic scale macroscopic particle , usually refers to particles much larger than atom s and molecule s. These are usually abstracted as point particle point like particles ... point particle point like , elementary particles are truly point particle punctual . ref ...Other uses File Gas particle movement.svg thumb Particles are very often represented as dot disambiguation ... s in the night sky . In the Outline of physical science physical sciences , a particle is a small wikt ... properties such as volume or mass . ref cite web author title Particle url http amsglossary.allenpress.com ... be considered a particle. ref cite web title Particle url http dictionary.reference.com browse particle work Reference.com Dictionary.com accessdate 2010 02 08 ref For example, grains of sand on a beach ... author F. W. Sears, M. W. Zemanski year 1964 chapter Equilibrium of a Particle title University ... reducing the problem to the ballistics of a classical physics classical point particle . ref cite book author F. W. Sears, M. W. Zemanski year 1964 chapter Equilibrium of a Particle title University ... is called a particle. A particle may be so small that it is an approximation to a point, or it may ... in, and give rise to several phenomena such as the particle in a box problem ref cite book author R ... of Ideal Gases Quantum States of a Single Particle title Fundamentals of Statistical and Thermal Dynamics publisher McGraw Hill pages vii x isbn 07 051800 9 ref and wave particle duality , ref ... particle s , which refer to particles smaller than atoms. ref cite web title Subatomic particle url http science.yourdictionary.com subatomic particle work American Heritage Science Dictionary ... in particle accelerator s or cosmic ray s. Composition File Quark structure proton.svg 150px ... can also be classified according to composition. Composite particle s refer to particles that have ... more details
Bacteria, like plants, have strong cell walls that a virus must breach to infect the cell. However ... violet name Viruses image Rotavirus Reconstruction.jpg image caption Rotavirus virus group I VII subdivision ranks Groups subdivision I dsDNA virus es br II ssDNA virus es br III dsRNA virus es br IV positive sense ssRNA virus ssRNA viruses br V negative sense ssRNA virus ssRNA viruses br VI ssRNA RT virus es br VII dsDNA RT virus es A virus is a small pathogen infectious agent that can replicate ... a non bacterial pathogen infecting tobacco plants, and the discovery of the tobacco mosaic virus ... Breitbart M, Rohwer F 2005 278 84 vcite journal author Breitbart M, Rohwer F title Here a virus, there a virus, everywhere the same virus? journal Trends Microbiol volume 13 issue 6 pages 278 84 year ... , a sub speciality of microbiology . Virus particles known as virions consist of two or three parts ... helical and icosahedron icosahedral forms to more complex structures. The average virus is about ... cells that a virus can infect is called its Host biology Host range host range . This can be narrow or, as when a virus is capable of infecting many species, broad. ref Shors pp. 49 50 ref Viral infections in animals provoke an immune response that usually eliminates the infecting virus. Immune responses ... is from the Latin virus referring to poison and other noxious substances, first used in English in 1392. ref name Etymology Dictionary vcite web title virus author Harper D year 2011 home The Online Etymology Dictionary url http www.etymonline.com index.php?term virus accessdate 23 December 2011 ref .... The Plural form of words ending in us Virus plural is viruses . The adjective viral dates to 1948 ... 24 December 2011 ref is also used to refer to a single, stable infective viral particle that is released ... used this filter to study what is now known as the tobacco mosaic virus . His experiments showed ... living germ and re introduced the word virus . ref name Collier3 Collier p. 3 ref Beijerinck maintained ... more details
About the punk band the XM Satellite Radio channel the Virus XM the album The Virus album Infobox musical artist See Wikipedia WikiProject Musicians name The Virus image missing image the virus.jpg caption image size 150 background group or band alias origin Philadelphia , USA genre Punk rock Punk , Streetpunk years active 1998 2004 label Charged Records, Punkcore Records associated acts Cheap Sex Br Nighttime Dealers BR No Authority BR Bomb Squadron website current members Mike Virus br Fat Dave br Chris BR Jarrod BR Geoff BR Paul BR Mike Authority br Tim br Josh past members notable instruments The Virus was a street punk band from Philadelphia , United States. Now defunct, their former singer Mike Virus went on to perform in the band Cheap Sex . Fat Dave now plays guitar in the Lancaster, PA punk band TiGHT FiTS Fat Dave and Jarrod were in a band called Bomb Squadron Right before The Virus was formed. The Virus formed in February 1998, with Mike Virus on vocals, Chris on lead guitar, Fat Dave on guitar, Jarrod on drums, and Geoff on bass. The band played their first show a month later ... Records. After the album was recorded, singer Mike Virus left the band and Paul took over vocals ... Chaos festival in Atlanta, Georgia alongside bands like Anti Nowhere League , The Crack, and Peter ... In The Sun festival alongside bands like The Exploited , The Partisans band The Partisans , GBH, UK .... Soon after, The Virus ceased touring and disbanded completely. Paul went on to play in bands such as Nighttime ... went on to form the post punk band The Hunt. In 2002, Mike Virus formed the band Cheap Sex , who disbanded ... 7 2003 on Dirty Punk Records Original members Mike Virus Vocals Chris Expulsion Lead guitar Fat ... Allmusic class artist id p510403 pure url yes Allmusic http www.chargedrecords.com photos virus band lancaster.gif Picture Category American punk rock groups Virus Category Street punk Virus, The Category Musical groups from Philadelphia, Pennsylvania The Virus it The Virus sv The Virus ... more details
In particle physics , the term particle zoo is used colloquially to describe a relatively extensive list of the known elementary particle s that almost look like hundreds of species in the zoo. The situation was particularly confusing in the late 1960s, before the discovery of quarks, when hundreds of strongly interacting particles hadron s were known. It was later discovered that they were not elementary particles, but rather composites of the quark s. The set of particles believed today to be elementary is known as the Standard Model . According to string theory , all particles in the zoo have a common ancestor, namely a String physics vibrating string . See also List of particles List of baryons List of mesons DEFAULTSORT Particle Zoo Category Particle physics particle stub es Zool gico de part culas ko ... more details
to a sound wave through a medium of a fluid like air, particle velocity would be the physical speed ...Sound measurements Particle velocity is the velocity v of a particle real or imagined in a Transmission .... Particle velocity should not be confused with the speed of the wave as it passes through the medium, i.e. in the case of a sound wave, particle velocity is not the same as the speed of sound ... small particle velocity. Particle velocity should also not be confused with the velocity of individual molecules. In applications involving sound, the particle velocity is usually measured using a logarithmic decibel scale called particle velocity level . Equations in terms of other measurements The velocity v can be related to the particle displacement math xi math and acceleration for single ... math class wikitable Symbol Units Meaning v Meters per second m s particle velocity m, meters particle ... density P sub ac sub W, watt s sound power or acoustic power A m area a m second s particle acceleration math rho math Kg m 3 Air Density Particle velocity level The particle velocity level or the sound ... in a medium, mostly air. It shows the ratio of the particle velocity v sub 1 sub and the particle velocity v sub 0 sub . The particle velocity level is math L v 20 , log 10 left frac v 1 v 0 right mathrm dB math where v sub 1 sub and v sub 0 sub are the velocities. The particle velocity level has the letter L sub v sub . The Units of measurement unit of the particle velocity level is named dB . Notice The decibel dB is dimensionless. If v sub 0 sub is the standard reference particle velocity of math v 0 5.0 times 10 8 mathrm frac m s math we use dB SVL . SVL sound velocity level . Sound particle velocity v should not be confused with Sound velocity c . See also Sound particleParticle displacement Particle acceleration Pressure gradient External links http www.sengpielaudio.com calculator ... sound wave pdf http www.microflown.com The particle velocity can be directly measured with a Microflown ... more details
, or abstract visual effects like glowing trails, magic spells, etc. While in most cases particle systems are implemented in three dimensional graphics systems, two dimensional particle systems may also be used under some circumstances. Typical implementation Typically a particle system s position ...about 3D computer graphics the computer game developer Particle Systems Ltd Image particle sys fire.jpg thumb A particle system used to simulate a fire, created in 3dengfx . Image particle sys galaxy.jpg thumb Ad hoc particle system used to simulate a galaxy, created in 3dengfx. Image Pi explosion.jpg thumb A particle system used to simulate a bomb explosion, created in particleIllusion . The term particle system refers to a 3D computer graphics computer graphics technique to simulate certain fuzzy ... of such phenomena which are commonly replicated using particle systems include fire, explosions ... has attached to it a set of particle behavior parameters. These parameters can include the spawning ... the direction they are emitted upon creation , particle lifetime the length of time each individual particle exists before disappearing , particle color, and many more. It is common for all or most ... value and the degree of randomness allowable on either side of the center i.e. the average particle ... appear to spray directly from each face. A typical particle system s update loop which is performed ... and the spawning area specified. Each of the particle s parameters i.e. velocity, color, etc. is initialized ..., each particle is rendered, usually in the form of a texture mapped textured sprite computer graphics ..., this is not necessary a particle may be rendered as a single pixel in small resolution limited processing ... s computed from particle metaballs make quite convincing liquids. Finally, 3D mesh objects can stand ... to match the positions of thousands or millions of particles. Snowflakes versus hair Particle systems can be either animated or static that is, the lifetime of each particle can either be distributed ... more details
unreferenced date February 2011 Image particlecounter.jpg thumb right 380px Diagram of a Particle Counter A particle counter is an instrument that detects and counts particles. By its very nature a particle counter is a single particle counter, meaning it detects and counts particles one at a time. The nature of particle counting is based upon either light scattering, light obscuration, or direct imaging. A high energy light source is used to illuminate the particle as it passes through the detection chamber. The particle passes through the light source typically a laser or halogen light and if light ... software to measure particle attributes. If light blocking obscuration is used the loss of light is detected. The amplitude of the light scattered or light blocked is measured and the particle is counted ... particle counter diagram. More information about types of particle counters and types of particle detection follow in this article. Direct imaging particle counting employs the use of a high resolution camera and a light to detect particles. Vision based particle sizing units obtain two dimensional images that are analyzed by computer software to obtain particle size measurement in both the laboratory and online. Along with particle size, color and shape analysis can also be determined. File Vision Based Particle Counter.jpg thumb right 380px Diagram of a Vision Based Particle Counter Applications of particle counters are separated into three primary categories Aerosol particle counters Liquid particle counters Solid particle counters Aerosol particle counters Aerosol Particle Counters are used ... environment aerosol particle counters are used is a cleanroom . Cleanrooms are used extensively ... have defined particle count limits. Aerosol particle counters are used to test and classify a cleanroom ... in a unit of air. The typical unit is either cubic feet or cubic meters. The particle counts are always ... 1,000 align center ISO 7 align center 10,000 align center ISO 8 align center 100,000 Liquid particle ... more details
Wiktionary bradyon tardyon ittyon Wiktionary tachyon The term massive particle refers to particles which have non zero rest mass . They are divided in two major groups, bradyons and tachyons . The existence of massive superluminal particles is a controversial issue. Bradyons A bradyon , also known as a tardyon or ittyon , ref cite journal last Bilaniuk first O. M.P. last2 Sudarshan first2 E.C.G. title Particles beyond the Light Barrier journal Physics Today volume 22 issue 5 pages 43 51 year 1969 doi 10.1063 1.3035574 ref is a Elementary particleparticle that travels slower than speed of light light . ref cite arxiv last Folman first R. last2 Recami first2 E. title On the Phenomenology of Tachyon Radiation class hep th eprint hep th 9508166 year 1995 ref The term bradyon , from lang el Wiktionary bradys , slow , was coined to contrast with tachyon , from lang el Wiktionary tachys , swift, quick, fast, rapid , which refers to hypothetical particles that travel faster than light . As predicted by theory of relativity relativity , since baryons travel slower than light, they can also be defined as particles that have a non zero rest mass . However, if tachyons exist, then not all massive particles are bradyons, since tachyons are also massive, but with an imaginary rest mass see Tachyon Mass Tachyon . Tachyons Main Tachyon A tachyon is a hypothetical subatomic particle that always moves faster than light. In the language of special relativity, a tachyon would be a particle with space like four momentum and imaginary proper time. A tachyon would be constrained to the space like portion of the energy momentum graph. Therefore, it cannot slow down to subluminal speeds. References references Category Particle physics particle stub fr Bradyon ja pl Tardiony ru simple Bradyon fi Tardioni ... more details
expert subject Physics date June 2009 Orphan date February 2009 Maximon an hypothetical elementary particle of maximum mass in the mass spectrum of elementary particles having mass of 5 x 10 sup 28 sup Electronvolt eV . Maximons can be electrically charged or neutral, they can have internal temperature of maximum or absolute zero, spin. They can look like black holes also. Maximons were assumpted by Russian academican Markov, Moisey Alexandrovich M. A. Markov at 1966. References reflist External links http adsabs.harvard.edu abs 1987PZETF..45..115M Abstract of Maximon and minimon in the light of a possible formulation of the concept of an elementary particle http www.jinr.ru publish Archive Pepan 1998 v29 v 29 3 pdf obzory v29p3 07.pdf Markov s Maximon and black holes in Russian language Russian http heritage.sai.msu.ru ucheb Zemcov Chapter 01 chapter 01.htm Analyse of dimensions in Russian Physics stub Particle stub Category Hypothetical elementary particles ru ... more details
processes, such as photon s, neutrino s, and muon s, as well as a wide range of exotic particle s. To be specific, the term particle is a misnomer from classical physics because the dynamics of particle physics are governed by quantum mechanics . As such, they exhibit wave particle duality , displaying particlelike behavior under certain experimental conditions and wave like behavior in others ... Heavy Ion Collider RHIC Particle physics is a branch of physics that studies the existence and interactions ... are summarized in a theory called the Standard Model , therefore particle physics is largely the study of the Standard Model s particle content and its possible extensions. Subatomic ... . Modern particle physics research is focused on subatomic particle s, including atomic constituents ... treated in quantum field theory . Following the convention of particle physicists, elementary particles ... display wave like properties as well. All particles and their interactions observed to date ... to date. However, most particle physicists believe that it is an incomplete description of nature .... Particle physics has affected the philosophy of science greatly. Some particle physicists adhere .... ref cite web url http pdg.lbl.gov title Review of particle physics ref ref cite web url http www.interactions.org title Particle Physics News and Resources ref ref cite web url http cerncourier.com ... cms ?pid 1000345 title Particle physics in 60 seconds ref Other physicists may defend ... matter is composed of elementary particle s dates to at least the 6th century BC. The philosophical ... modern Europe an physicists such as Pierre Gassendi , Robert Boyle , and Isaac Newton . The particle ... that each element of nature was composed of a single, unique type of particle. Dalton and his contemporaries ..., a bewildering variety of particles were found in scattering experiments. This was referred to as the particle ... 24 fundamental particle s, which are the constituents of matter . Finally, it predicts the existence ... more details
string and existence of a massless spin 2 particle behaving like the graviton . Technicolor main Technicolor ... Model of Elementary Particles.svg thumb 300px Standard Model of Elementary Particles In particle physics , an elementary particle or fundamental particle is a wiktionary particleparticle not known ... particle truly has no substructure, then it is one of the basic building blocks of the universe from ... An Encyclopedia of Particle Physics publisher Simon & Schuster year 2000 isbn 0 684 85578 ... atom means indivisible . A central feature in elementary particle theory is the early 20th century ... as point particle s, although some particle theories such as string theory posit a physical dimension. Overview Main Standard Model See also Physics beyond the Standard Model Image Particle overview.svg ... and are divided into twelve flavour particle physics flavour s. Particles associated with fundamental ... title Facts and Mysteries in Elementary Particle Physics publisher World Scientific isbn 981 238 149 ... neutrino , muon , muon neutrino , tau particle tau , tau neutrino Elementary bosons force carrier ... massless force carriers. ref name mrob Standard Model main Standard Model The Standard Model of particle ... , the particle that would carry the gravity gravitational force or the superpartner ... main Fermion The 12 fundamental fermionic flavours are divided into three generation particle physics ... and its two cousins, the muon and the tau particle tau . class wikitable width 100 style text align center Particle Generations colspan 6 Leptons colspan 2 First generation colspan 2 Second generation colspan 2 Third generation Name Symbol Name Symbol Name Symbol electron Subatomic particle electron muon Subatomic particle muon tau particle tau Subatomic particle tau electron neutrino Subatomic particle electron neutrino muon neutrino Subatomic particle Muon neutrino tau neutrino Subatomic particle Tau neutrino colspan 6 Quarks colspan 2 First generation colspan 2 Second generation colspan ... more details
Unreferenced date January 2012 In particle physics , a shower is a cascade of secondary subatomic particle particles produced as the result of a high energy particle interacting with dense matter. The incoming particle interacts, producing multiple new particles with lesser energy each of these then interacts in the same way, a process that continues until many thousands, millions, or even billions of low energy particles are produced. These are then stopped in the matter and absorbed. Types of showers Image Schematic of a particle shower.svg thumb right The start of an electromagnetic shower. There are two basic types of showers. Electromagnetic showers are produced by a particle that interacts primarily or exclusively via the electromagnetic force , usually a photon or electron . Hadronic showers are produced by hadron s i.e. nucleon s and other particles made of quark s , and proceed mostly via the strong nuclear force . Electromagnetic showers An electromagnetic shower begins when a high energy electron, positron or photon enters a material. At high energies above a few Electron volt MeV , below which photoelectric effect and Compton scattering are dominant , photons interact with matter primarily via pair production &mdash that is, they convert into an electron positron pair ... of experiments as a means of observing ultra high energy cosmic ray s. Some experiments, like ... others, like Haverah Park experiment , have detected the remains of a shower by sampling the energy deposited over a large area on the ground. In particle detector s built at high energy particle accelerator s, a device called a calorimeter particle physics calorimeter records the energy of particles ... type of particle. See also Air shower physics , an extensive many kilometres wide cascade of ionized ... , from cite journal author S. Eidelman et al. title Review of Particle Physics journal Physics Letters ... 2004PhLB..592....1P url http pdg.lbl.gov Category Experimental particle physics de Teilchenschauer ko ... more details
. The probability shown as the colour opacity optics opacity of finding the particle at a given point x is spread out like a waveform, there is no definite position of the particle. As the amplitude ...In physics , a free particle is a particle that, in some sense, is not bound by an external force, or equivalently not in a region where its potential energy varies. In classical physics, this means the particle is present in a field free space. in quantum mechanics, it means a region of constant potential ... at any point or surface in three dimensions in space. Classical Free Particle The classical free particle ... of the particle and v is the vector velocity of the particle. Non Relativistic Quantum Free Particle ... Schr dinger equation Matter wave A free quantum particle is described by the Schr dinger equation ... is the wavefunction of the particle at position r and time t . The solution for a particle with momentum ... conjugate , over all space is the probability of finding the particle in all space, which must be unity if the particle exists math int mathrm all ,space psi mathbf r ,t 2 d 3 mathbf r 1 math This is the normalization ... of wave function for one spin 0 particle in one dimension. The wavefunctions shown are continuous ... density which can measure in of finding the particle at the points on the x axis. image1 ..., meaning the particle becomes more localized. width1 400 image2 Perfect localization.svg caption2 In the limit 0, the particle s position and momentum become known exactly. width2 200 In this case, the free particle wavefunction may be represented by a superposition of free particle momentum eigenfunctions ... which turns out to be the classical velocity of the particle. The phase velocity of the wave is defined as math v p frac omega k frac E p frac p 2m frac v 2 math Relativistic free particle main Quantum ... wave equations . See also Particle in a box Finite square well Delta potential Wave packet particle ..., Mc Graw Hill USA , 2006, ISBN 10 007 145533 7 ISBN 13 978 007 145533 6 DEFAULTSORT Free Particle ... more details
In linguistics , a discourse particle is a lexeme or Grammatical particleparticle which has no direct semantic meaning in the context of a Sentence linguistics sentence , having rather a Pragmatics pragmatic function it serves to indicate the speaker s attitude, or to structure their relationship to other participants in a conversation . Discourse particles are primarily a feature of spoken language in written language they indicate an informal or jocular tone. Examples Examples in English language English include well e.g. in Well, I wouldn t say that. or Well, look who it is y know e.g. in It s not as easy as that, y know. like e.g. in It can drive some parents, like, nuts. ref name like cite journal first Eils last Lotozo year 2002 month September 4 title The way teens talk, like, serves a purpose journal Milwaukee Journal Sentinel url http articles.chicagotribune.com 2002 09 05 features 0209050015 1 linguistics english project discourse particles Citing cite journal first Muffy E. A. last Siegel year 2002 month title Like The Discourse Particle and Semantics journal Journal of Semantics volume 19 issue 1 pages 35 71 url http jos.oxfordjournals.org cgi content abstract 19 1 35 doi 10.1093 jos 19.1.35 ref See also Filled pause Filler linguistics Filler Speech disfluencies Tag question Notes reflist References cite book author Hansen, Maj Britt Mosegaard title The Function of Discourse Particles A study with special reference to spoken standard French year 1998 publisher Benjamins isbn 1 55619 815 9 location Philadelphia Lexical categories state collapsed Category Parts of speech de Diskurspartikel ko sv Diskurspartikel ... more details
Standard model cTopic Quantum field theory Background A point particle ideal particle ref H.C. Ohanian, J.T. Markert 2007 , p. 3 ref or point likeparticle , often spelled pointlike particle is an idealization of particle s heavily used in physics . Its defining feature is that it lacks dimension spatial ..., R.E. Kalaba 2007 , p. 1 ref A point particle is an appropriate representation of any object whose ... of any shape will look and behave as a point like object. In the theory of gravity , physicists often discuss a point mass , meaning a point particle with a nonzero mass and no other properties or structure. Likewise, in electromagnetism , physicists discuss a point charge , a point particle ... combinations of properties extended objects behave as point like even in their immediate vicinity ... to those of a point particle of equal charge mass located at the center of the sphere. ref I. Newton .... Newton, A. Motte, J. Machin 1729 , p. 270 271 ref In quantum mechanics , the concept of a point particle is complicated by the Heisenberg uncertainty principle Even an elementary particle , with no internal ... elementary particle s such as electron s or quark s, which have no internal structure, versus composite particle s such as proton s, which do have internal structure A proton is made of three quarks. Elementary ... above. For more details see elementary particle . Point mass Image Example of a point.svg 220px ... is an idealized model of a particle which has an electric charge . A point charge is an electric charge ... by gluon s. main Elementary particle In quantum mechanics , there is a distinction between an elementary particle also called point particle and a composite particle . An elementary particle, such as an electron , quark , or photon , is a particle with no internal structure, whereas a composite particle ... . The particle wavepacket always occupies a nonzero volume. For example, see atomic orbital The electron is an elementary particle, but its quantum states form three dimensional patterns. Nevertheless ... more details
Hermetic detector Modern detectors in particle physics combine several of the above elements in layers much like an onion . Installations of particle detectors At colliders At CERN for the Large Hadron ...Image CMScollaborationPoster.png thumb 400px The Compact Muon Solenoid CMS is an example of a large particle detector. Notice the person for scale. In experimental and applied particle physics , nuclear physics , and nuclear engineering , a particle detector , also known as a radiation detector , is a device used to detect, track, and or identify high energy Elementary particleparticle s, such as those produced by nuclear decay , cosmic radiation , or reactions in a particle accelerator . Modern ... Image Detectors summary 3.png thumb 520px Summary of Particle Detectors Detectors designed for modern ... , when the detector counts the particles but does not resolve its energy or ionization. Particle ... are also massless particles, the term particle detector is still correct ref cite journal journal ... Sensors for particle detection Beam test of the four sensors RAPS03 stacked system author D. Passeri ... s but other, completely different principles have also been applied, like erenkov radiation erenkov ... Commonly used detectors for Particle and Nuclear Physics Gaseous ionization detectors Ionization ... Vertex Detector Transition radiation detector Calorimeter particle physics Calorimeters microchannel ... fermidet.html CDF http www d0.fnal.gov D0 At DESY for Hera particle accelerator HERA H1 particle detector H1 HERA B HERMES experiment HERMES Zeus particle detector ZEUS At Brookhaven National Laboratory ... Cornell for Cornell Electron Storage Ring CESR CLEO particle detector CLEO CUSB At Budker Institute ... of ionizing particles http rd11.web.cern.ch RD11 rkb titleD.html The Particle Detector BriefBook ... Grupen first C. title Physics of Particle Detection booktitle AIP Conference Proceedings, Instrumentation in Elementary Particle Physics, VIII pages 3&ndash 34 volume 536 publisher Dordrecht, D. Reidel ... more details
nucleon s and atom s. There are two types of subatomic particles elementary particle s, which are not made of other particles, and composite particle s. Particle physics and nuclear physics study ... An introduction to the standard model of particle physics url http books.google.com ?id Dm36BYq9iu0C&printsec frontcover&dq particle physics publisher Cambridge University Press page 1 isbn 978 0 521 85249 4 ref Six Flavour particle physics flavors of quark s Up quark up , Down quark down , Bottom ... s electron , electron neutrino , muon , muon neutrino , tau particle tau , tau neutrino Thirteen gauge ... elementary particle s. For example, a proton is made of two up quark s and one down quark , while ... s . Particles In particle physics , the conceptual idea of a particle is one of several concepts ..., the word particle means something rather different from the common sense of the term, reflecting ... from what everyday experience would lead us to expect. The idea of a particle underwent serious rethinking in light of experiments that showed that light could behave like a stream of particles called photons as well as exhibit wave like properties. These results necessitated the new concept of wave particle duality to reflect that quantum scale particles are understood to behave in a way resembling ... particle duality has been shown to apply not only to photons but to increasingly massive particles. ref Cite journal author year 2000 title Wave particle duality of C60 molecules first6 Anton last6 ... as both particles and waves . This paradox is known as the Wave particle duality Wave particle Duality ... Quantum Mechanics An Introduction url http books.google.com ?id 7qCMUfwoQcAC&pg PA29&dq wave particle ... has been verified not only for elementary particles but also for compound particles like atoms and even ... quantum mechanics, wave particle duality applies to all objects, even macroscopic ones wave properties ... and small wavelengths, both matter and radiation have both particle and wave aspects. ... But the wave ... more details
Particle therapy is a form of external beam radiotherapy using beams of energetic proton s, neutron s, or positive ion s for cancer treatment. The most common type of particle therapy as of 2009 ... a particle, photon therapy is not considered here. Additionally, electron therapy is generally put into its own category. Because of this, particle therapy is sometimes referred to, more correctly, as hadron ... been attempted it is a rare type of particle therapy that does not belong to the previously mentioned ... just over the last few millimeters of the particle s range, quite different from that of electrons or x rays. Particle therapy works by aiming energetic ionizing particles at the target tumor ... increases while the particle penetrates the tissue and Stopping power particle radiation loses energy ... near the end of the particle s Range particle radiation range . Beyond the Bragg peak, the dose ... particle beam defines the depth of penetration, and hence, the location of the maximum energy deposition ... to employ a raster scan method, i.e., to scan the target area quickly like the electron ... PTCOG Particle Therapy Co Operative Group ref . Proton therapy see the main article Proton ... in operation The Particle Therapy Co Operative Group continuously lists treatment centers in operation ... ENG research charged particle index.shtml National Institute of Radiological Sciences ref at Chiba ... to open in 2011 and will be one of the most advanced centers for particle therapy with hadrons ... Conference of the Particle Therapy Co Operative Group PTCOG . Gunma, Japan, 49 ref . Sophisticated approaches in image guided particle therapy IGPT augments the radiotherapy machines with imaging ... e 1011214 a catTree e 100010,1008643,1009404,1011214 a langId e 11 a storeId e 10001.htm pt Particle ... announces first combined particle therapy center in U.S. Radiation oncology Category Radiation oncology Category Medical physics Category Particle physics de Partikeltherapie fr Hadronth rapie ... more details
. Initial stages of particle deposition top , blocking middle , ripening bottom Particle deposition ... by appropriate hydrodynamic flow conditions and favorable particle surface interactions. Depositing particles may just form a monolayer which further inhibits additional particle deposition, and thereby ... particle deposition, which leads to the formation of thicker particle deposits, and this process ..., initially deposited particles may also detach. The latter process is known as particle release and is often ... largely resembles particle deposition, macromolecules may substantially deform during adsorption. The present article mainly deals with particle deposition from liquids, but similar process occurs when aerosol s or dust deposit from the gas phase. Initial Stages A particle may diffuse ... develops, which leads to a progressive slowing down of the deposition. When particle deposition is efficient ... flow will transport the particles close to the surface. Once a particle is situated close to the surface, it will attach spontaneously, when the particle surface interactions are attractive. In this situation ... where &Gamma is the number density of deposited particles, t is the time, c the particle number concentration ..., flow geometry, and the interaction potential of the depositing particle with the substrate. In many ... of particle aggregation Homoaggregation versus Heteroaggregation particle heteroaggregation , whereby ... equation ref name gregory M. Elimelech, J. Gregory, X. Jia, R. Williams, Particle Deposition .... On the other hand, rod like particles may lead to much smaller coverage, since a few misaligned ... on surface blocking. For small particles and low salt, the diffuse layer will extend far beyond the particle ... at the same time. This situation will result in a porous layer made of particle aggregation particle aggregates at the surface, and is referred to as ripening. The porosity of this layer will depend whether the particle aggregation process is fast or slow. Slow aggregation will lead to a more ... more details
Unreferenced date July 2009 In particle physics , V is a generic name for heavy, unstable subatomic particle s that decay into a pair of particles, thereby producing a characteristic letter V in a bubble chamber or other particle detector . Such particles were first detected using the Cosmotron particle accelerator at Brookhaven National Laboratory in the 1950s. Since all such particles have now been identified and given specific names, this term has fallen into disuse. V sup 0 sup is still used on occasion to refer generally to neutral particle s that may confuse the B tagging algorithms in a modern particle detector. DEFAULTSORT V Particle Category Subatomic particles particle stub ... more details
unreferenced date March 2009 main Quasiparticle In theoretical physics , the term dressed particle refers to a bare particle together with some excitations of other quantum field s that are physically inseparable from the bare particle. For example, a dressed electron include the chaotic dynamics of electron positron pairs and photon s surrounding the original electron. In radiobiology , a dressed particle is a bare particle together with its Debye sphere that neutralizes its electric charge. Dressed particles are also often called clothed particles . Category Theoretical physics phys stub ... more details
Particle filter example small.png thumb 250px Result of particle filtering red line based on observed data generated from the blue line Image Particle filter example.png Much larger image In statistics , a particle filter , also known as a sequential Monte Carlo method SMC , is a sophisticated model ... isbn ref Particle filters are usually used to estimate Bayesian model s in which the latent variable ... up to that time particle filters are so named because they allow for approximate filtering ... . Particle filters are the Sequential estimation sequential online algorithm online analogue of Markov ... designed particle filters can often be much faster than MCMC. They are often an alternative to the Kalman ... a version of the Kalman filter as a proposal distribution for the particle filter. citation needed date October 2011 Compared with MCMC methods, particle filters estimate only the distribution of only ... a set of weighted samples, rather than a usually much larger set of unweighted samples. Particle ... inference based only on simulated likelihood particle filter analysis of dynamic economic models .... Goal The particle filter aims to estimate the sequence of hidden parameters, x sub k sub for k ... 1 sub , , y sub k sub . Model Particle methods assume math x k math and the observations math y k ... distribution is Gaussian a third order approximation is possible . Particle filters are also an approximation, but with enough particles they can be much more accurate. Monte Carlo approximation Particle methods, like all sampling based approaches e.g., Markov chain Monte Carlo MCMC , generate a set ... statistics resampling SIR , the original particle filtering algorithm Gordon et al. 1993 , is a very commonly used particle filtering algorithm, which approximates the filtering distribution math p ... particles from the current particle set with probabilities proportional to their weights. Replace the current particle set with this new one. b For math L 1, ldots,P math set math w L k 1 P. math The term ... more details
Infobox Software name Fork Particle screenshot caption developer Fork Particle, Inc. latest release version ... http www.forkparticle.com Fork Particle Official Website Fork Particle is a computer graphics visual effects modeling and software development kit SDK developed and sold by Fork Particle, Inc. Fork Particle uses its Real time computing real time Particle Systems technology to simulate visual effects or particle effects such as Computer generated imagery CGI explosions, fire, rain, smoke, dust, etc. Fork Particle is used in video games and visual simulation software such as a flight simulator . It has ... http www.gamasutra.com view news 14927 Fork Particle Joins Xbox 360 Tools Middleware Program.php ref and PlayStation 3 . Notable Fork Particle licensees include Trickstar Games, ref http www.gamasutra.com view pressreleases 72414 Trickstar Games Adopts Particle Effects Middleware Technologyby Fork ... that have utilized Fork Particle s technology include Empire Earth III , LEGO Universe , Splosion ... Particle Toolset For Civ Vs Visual Effects.php ref Fork Particle SDK Fork Particle s real time technology component or particle engine is meant to be integrated and used with a video game engine or computer graphics engine hardware graphics engine . Particle effects are authored by VFX artists or designers using Fork Particle s effects modeling tool and then brought into the user s 3D computer graphics environment or 2D computer graphics environment where these particle effects are simulated by Fork Particle s engine in real time and displayed by the user application s graphics engine hardware graphics engine . The Fork Particle SDK includes these components real time particle engine Fork Runtime SDK , particle editor or modeling tool Fork Particle Studio , live update for in application particle effects editing Fork Live Tuner , and particle effects definitions batch file exporter. Technology Partners Fork Particle also includes incorporation or integrations with partner technologies ... more details
unreferenced date January 2011 mergeto Pseudotyping date January 2011 A pseudotyped virus is an enveloped virusparticle assembled with a foreign viral glycoprotein . The process of producing such particles is termed pseudotyping . Category Virology Virus stub ... more details
Encyclopedia
top
