and an increase in population genetic load , which over time will result in extinction. A Vortex The A vortex is a result of an increase in genetic drift and a corresponding decrease in genetic variance which leads to a decrease in population adaptive potential , and eventual extinction. This vortex ... s ratchet References Refimprove date January 2008 reflist Category Extinction et V ljasuremiskeeris fr Vortex d extinction ko ...Extinction vortices are a class of models through which conservation biology conservation biologists , conservation genetics geneticists and ecologist s can understand the dynamics of and categorize extinction s in the context of their causes. Developed by M. E. Gilpin and Michael Soule M. E. Soul in their now famous 1986 paper Minimum viable populations Processes of species extinction, there are currently four classes of extinction vortices. ref cite book author Gilpin ME, Soul ME year 1986 chapter Minimum Viable Populations Processes of Species Extinction pages 19 34 editor M. E. Soul title Conservation Biology The Science of Scarcity and Diversity publisher Sinauer, Sunderland, Mass ref The first two R and D deal with Natural environment environmental factors that have an effect on the ecosystem or community level, such as disturbance , pollution , habitat loss etc. Whereas the second two F and A deal with genetic factors such as inbreeding depression and outbreeding depression , genetic drift etc. Types of vortices R Vortex The R vortex is initiated when there is a disturbance which facilitates a lowering of population size N and a corresponding increase in variability Var r ... 2007 D Vortex The D vortex is initiated when population size N decreases and variability Var r increases ... patchy or Habitat fragmentation fragmented . Within these fragments, local extinction rates increase which, through positive feedback , further increases D. F Vortex The F vortex is initiated by a decrease ... more details
Other uses Morefootnotes date April 2010 Image Airplane vortex edit.jpg thumb 250px Vortex created by the passage of an aircraft wing, revealed by colored smoke A vortex plural vortices is a Rotation spinning ... and pathlines streamlines is vortex flow. The motion of the fluid swirling rapidly around a center geometry center is called a vortex. The speed and rate of rotation of the fluid in a free irrotational vortex are greatest at the center, and decrease progressively with distance from the center, whereas the speed of a forced rotational vortex is zero at the center and increases proportional ... the pressure minimum in a free vortex is much lower. Properties Image Crow instability contrail.JPG Crow Instability contrail demonstrates vortex 300px thumb Vortices display some special properties The fluid pressure in a vortex is lowest in the center and rises progressively with distance from the center. This is in accordance with Bernoulli s Principle . The core of a vortex in air is sometimes .... The spout of a tornado is a classic and frightening example of the visible core of a vortex. A dust devil is also the core of a vortex, made visible by the dust drawn upwards by the turbulent flow of air from ground level into the low pressure core. The core of every vortex can be considered to contain a vortex line, and every particle in the vortex can be considered to be circulating around the vortex line. Vortex lines can start and end at the boundary of the fluid or form closed loops. They cannot ... themselves to a solid surface. For example, a vortex usually forms ahead of the Propeller propeller disk or jet engine of a slow moving Fixed wing aircraft airplane . One end of the vortex line is attached to the propeller disk or jet engine, but when the airplane is taxiing the other end of the vortex line readily attaches itself to the ground rather than end in midair. The vortex can suck water ... vortex. The Circulation fluid dynamics circulation of the merged vortex will equal the sum of the Circulation ... more details
Other uses Vortex disambiguation File Lilian Braithwaite & No l Coward.jpg right thumb 250px No l Coward with Lilian Braithwaite , his co star in The Vortex The Vortex is a Play theatre play by the English people English writer and actor No l Coward . The story focuses on sexual vanity and drug abuse among the upper classes. The play was Coward s first great commercial success. After London productions in 1924 25, the play received a New York production in 1924 26. It has enjoyed several recent revivals. Background and productions The story is about a nymphomaniac socialite and her cocaine addicted son played by Coward . Some saw the drugs as a mask for homosexuality, ref Hoare, p. 129 ref while Kenneth Tynan later described it as a jeremiad against narcotics with dialogue that sounds today not so much stilted as high heeled . ref name tynan Tynan, pp. 286 88 ref Image kate cutler.jpg 125px thumb left Kate Cutler c. 1900 It was first performed in 1924 at the Everyman Cinema Everyman Theatre , Hampstead in north London. Leading London managements had wished to stage the play, but had not wanted Coward to play the juvenile lead, Nicky. As one of Coward s principal objects in writing the play ... drama 3671468 The Vortex Noel Coward 27s hothouse drama.html Review of The Vortex , The Telegraph , 2008 ref Ivor Novello appeared in The Vortex film a 1928 film version . ref http www.imdb.com title tt0019538 The Vortex 1928 at the IMDB, accessed March 8, 2011 ref In 1975, Glyn Dearman produced a BBC .... ref http www.radiodramareviews.com id121.html The Vortex by Noel Coward , Radio Drama Reviews Online ... reviews vortex rev.htm 2002 review of The Vortex at the Donmar Warehouse http www.curtainup.com vortex.html 2001 review of The Vortex off Broadway at Diane Von Furstenburg Studio, The Theater ... of The Vortex at the Royal Exchange Theatre, UK http www.ibdb.com production.php?id 9899 Internet Broadway Database listing DEFAULTSORT Vortex Category Plays by No l Coward Category English plays ... more details
name ETMM See also extinction habitat fragmentation ecological extinctionextinctionvortex small ...Extinction threshold is a term used in conservation biology to explain the point at which a species , population ..., or metapopulation, will go extinct , ref name ETMM Ovaskainen, O. and Hanski, I. 2003 Extinction ... just below the critical value, a phenomenon known as extinction debt . ref name Tilman1994 cite doi 10.1038 371065a0 ref Extinction Thresholds are important to conservation biologists when ... than then extinction rate, otherwise the entire entity will go extinct once it reaches the threshold ..., 3rd Ed, Sinauer Associates. ref Extinction thresholds are realized under a number of circumstances and the point in modeling them is to define the conditions that lead a population to extinction. ref name ETPFL With, K.A. and King, A.W. 1999 Extinction Thresholds For Species in Fractal Landscapes, Conservation Biology Vol 13, No.2,pp.314 326. ref Modeling extinction thresholds can explain the relationship between extinction threshold and habitat loss and habitat fragmentation . ref name EHFET Fahrig, Lenore. 2002 Effect of Habitat Fragmentation on the Extinction Threshold A Synthesis, Ecological ... to predict extinction thresholds. The classic metapopulation model is the Levins Model , which ... Lande to include habitat occupancy. ref name ETMM This mathematical model is used to infer the extinction ... extinction thresholds because of the difficulty in understanding extinction processes through ...,F, 2003 Extinction Thresholds in Host Parasite Dynamics, Ann. Zool. Fennic. 40 115 130. ref When determining an extinction threshold there are two types of models that can be used deterministic ... , e extinction rate, c colonization rate, and h amount of habitat. A species will persist only ... the deterministic extinction threshold, but in reality has a high risk of extinction . ref name ETMM Other Factors When using metapopulation type models to predict extinction thresholds there are a number ... more details
size Extinctionvortex References div class references small references div Category Extinction pt ...conservation status Functional extinction is the extinction of a species or other taxon such that it disappears from the fossil record , or historic reports of its existence cease ref Extinctions in Near Time Causes, Contexts, and Consequences 1999. Edited by R.D.E. MacPhee, Hans Dieter Sues . page 202. ref the reduced population no longer plays a significant role in ecosystem function ref cite web url http www.greenfacts.org biodiversity l 3 1 define biodiversity.htm title What is the link between biodiversity and ecosystem services? accessdate 2006 12 16 work Scientific Facts on Biodiversity archiveurl http web.archive.org web 20060930074436 http www.greenfacts.org biodiversity l 3 1 define biodiversity.htm Bot retrieved archive archivedate 2006 09 30 ref or the population is no longer viable. There are no individuals able to reproduce, or the small population of breeding individuals will not be able to sustain itself due to inbreeding depression and genetic drift , which leads to a loss of Fitness biology fitness . In plant populations, Self incompatibility in plants self incompatibility mechanisms may cause related plant specimens to be incompatible, which may lead to functional extinction if an entire population becomes self incompatible. This does not occur in larger populations. In Polygyny polygynous populations, where only a few males leave offspring, there is a much smaller reproducing population than if all viable males were considered. Furthermore, the successful males act as a genetic bottleneck, leading to more rapid genetic drift or inbreeding problems in small populations. The IUCN Red List does not have a category for functional extinction, and so species which are no longer viable or able to sustain themselves in the wild may be classified as critically endangered or they may be extinct in the wild if specimens remain in captivity but there is no reasonable ... more details
wiktionary extinction wikiquote ExtinctionExtinction may refer to Extinction peerage , in the United Kingdom In science Bird s eye extinction , in optical mineralogy Extinction , in biology and palaeontology Extinction another word for attenuation , in physical sciences Extinction astronomy Extinction angle , in optical mineralogy Extinction coefficient another term for mass attenuation coefficient , in physical sciences Undulose extinction , a geological term In medicine Extinction psychology Extinction neurology In books Extinction novel Extinction novel , a fantasy novel by Lisa Smedman Extinction , a science fiction novel by Ray Hammond In entertainment Extinction , a song by Stigmata from the album Hollow Dreams Extinction Star Trek Enterprise Extinction Star Trek Enterprise , television episode Extinction Smallville episode Extinction Smallville episode , television episode Aliens versus Predator Extinction , a video game for PlayStation 2 and Xbox Resident Evil Extinction , a 2007 film starring Milla Jovovich See also Extinct disambiguation disambig de Extinktion es Extinci n desambiguaci n fr Extinction pl Ekstynkcja sv Extinktion ... more details
File LvMS Lvv.jpg thumb A sand grain of volcanic glass under the petrographic microscope . Its amorphous nature makes it go extinct in cross polarized light bottom frame , and thus does not have an extinction angle. Scale box in millimeters. File Quartz zhaseni.gif thumb left Undulose extinction in quartz . Extinction is a term used in optical mineralogy and petrology , which describes when cross polarized light Lighting dims , as viewed through a thin section of a mineral in a petrographic microscope . An isotropic minerals, opaque metallic minerals, or amophous materials glass show no light i.e. constant extinction . Anisotropic minerals will show one extinction for each 90 degrees of stage rotation. The Extinction angle is the measure between the cleavage direction or habit of a mineral and the extinction. To find this, simply line up the cleavage lines long direction with one of the cross hairs in the microscope, and turn the mineral until the extinction occurs. The number of degrees the stage was rotated is the extinction angle, between 0 89 degrees. 90 degrees would be considered zero degrees, and is known as parallel extinction. Inclined extinction is a measured angle between 1 89 degrees. Minerals with two cleavages can have two extinction angles, and minerals in which the multiple angles are the same are called symmetrical extinction. Minerals that have no cleavage or elongation can not have an extinction angle. Minerals with undulose extinction , solid solution zonation, or other factors e.g. Bird s eye extinction in mica that may inhibit this measure and may be more difficult to use. References cite book last Nesse first W.D. coauthors editor title Introduction of Optical Mineralogy chapter edition 2nd series volume year 1991 publisher Oxford University Press place New York pages 335 isbn 0 19 506024 5 Category Optical mineralogy petrology stub ... more details
Extinction coefficient refers to several different measures of the absorption of light in a medium In chemistry, biochemistry, molecular biology, or microbiology, the mass attenuation coefficient mass extinction coefficient and the molar absorptivity molar extinction coefficient are parameters defining how strongly a substance absorbs light at a given wavelength, per density mass density or per molar concentration , respectively. In physics, the extinction coefficient is the imaginary part of the complex index of refraction , which also relates to light absorption. For the quantitative relationship between the chemistry and physics definitions, see Mathematical descriptions of opacity . disambig ca Coeficient d extinci de Extinktionskoeffizient es Coeficiente de extinci n fr Absorptivit molaire ... more details
refimprove date July 2009 Extinction is the classical conditioning conditioning phenomenon in which a previously ... paired aversive or appetitive stimulus. Fear conditioning Extinction is typically studied within the Pavlovian fear conditioning framework in which extinction refers to the reduction in a conditioned ... shock loud noise with which it has been previously paired. The simplest explanation of extinction is that as the CS ... of CR in the context where extinction training occurred but not a different context after aversive ... when learning occurred in context A and extinction in context B , and spontaneous recovery restoration of CR when the retention test occurs after a long but not a short delay after extinction training and alternative explanations have been offered. ref name Myers & Davis 2007 Research on fear extinction ... & Davis 2007 Mechanisms of Fear Extinction. Molecular Psychiatry , 12, 120 150. ref Theories The dominant account of extinction involves associative models. However, there is debate over whether extinction ..., modulation and response fatigue. Myers and Davis laboratory work with fear extinction ... in which the extinction occurs. ref name Myers & Davis 2007 Given the competing views and difficult ... level most often in rodents to tease apart the specific brain mechanisms of extinction, in particular ..., Unal and Par published in Nature Neuroscience found that extinction is correlated with Inhibitory ... of anxiety. ref Amano T, Unal CT, Par D. 2010 . Synaptic correlates of fear extinction in the amygdala ... In the operant conditioning paradigm, extinction refers to the decline of an operant response when it is no longer reinforced in the presence of its discriminative stimulus. Extinction is observed ... occurs. In his autobiography, B.F. Skinner noted how he accidentally discovered the extinction of an operant response due to the malfunction of his laboratory equipment quote My first extinction curve ... had gone on pressing although no pellets were received. ... The change was more orderly than the extinction ... more details
about the biological term Extinction event Busta Rhymes album E.L.E. Extinction Level Event The Final World Front Bigfinishbox title The Extinction Event series Professor Bernice Summerfield number 2.3 cover Extinction Event.jpg writer Lance Parkin director Gary Russell producer Gary Russell set between The Stone s Lament and br The Skymines of Karthos length 70 minutes The Extinction Event is a Big Finish Productions List of Doctor Who audio plays by Big Finish audio drama featuring Lisa Bowerman as Bernice Summerfield , a character from the spin off media based on the long running United Kingdom British science fiction on television science fiction television series Doctor Who . Plot Only one object survived the destruction of the planet Halstead a harp . Bernice visits an auction house to buy the Halstead Harp but finds that someone else also has an interest in it and they re willing to kill... Cast Professor Bernice Summerfield Bernice Summerfield Lisa Bowerman Irving Braxiatel Miles Richardson Hulver Daniel Brennan actor Daniel Brennan Davon Alexis Khan Gulfrarg Ambassador Mark Donovan External links http www.bigfinish.com benny BS010 extinction.shtml Big Finish Productions Professor Bernice Summerfield The Extinction Event Category Bernice Summerfield audio plays Extinction Event DoctorWho stub ... more details
Extinction chess is a Chess variant variant of Chess western Chess where the objective of the game has changed. Instead of the winning condition of the game being the checkmate of the opponent s king, the object of the game is to capture all of a particular kind of piece the opponent has. In other words, the objective is to achieve any of the following Capture the opponent s king Capture the opponent s queen Capture both of the opponent s knights Capture both of the opponent s bishops Capture both of the opponent s rooks Capture all of the opponent s pawns. If your opponent promotes their last pawn, you will also win the game. Since the king is not a special piece in this game, it is legal to castle when in check, or to castle through check. Promotion to king is also allowed. This game was invented by R. Wayne Schmittberger . External links http www.chessvariants.org winning.dir extinction.html Extinction Chess http play.chessvariants.org pbm presets extinction chess.html Extinction Chess on Game Courier Play Extinction Chess against others online http www.itsyourturn.com ItsYourTurn.com Extinction chess tournaments online Category Chess variants ... more details
Unreferenced date December 2009 Orphan date December 2009 Infobox album See Wikipedia WikiProject Albums Name Appetite for Extinction Type Album Artist Some Velvet Sidewalk Cover Svs afe.jpg Released 1990 Recorded 1987 1989 Genre Experimental rock Length 26 11 Label Communion Producer Appetite for Extinction is the second album by Some Velvet Sidewalk . Track listing Seasons Old Bridges Dinosaur Hurt. Sidewalkin Crayons Snow. alright Moment Sidewalk and Sky Old Bridges Live 20,000 Leagues DEFAULTSORT Appetite For Extinction Category Some Velvet Sidewalk albums 1990s rock album stub ... more details
Image Quartz zhaseni.gif thumb Undulose extinction of quartz in Gneiss Orthogneiss Image Quartz micro2.jpg thumb Undulose extinction or undulatory extinction is a geological term referring to the type of extinction that occurs in certain mineral s when examined in thin section under cross Polarization waves polarized light. As the microscope stage is rotated, individual mineral grains appear black when the polarization due to the mineral prevents any light from passing through. If a mineral is Plastic deformation in solids deformed plastically by dislocation processes without recovery metallurgy recovery , strain builds up within the crystal lattice causing it to warp. This means that different parts reach extinction at slightly different angles, giving the crystal an irregular, mottled look. ref http books.google.co.uk books?id 4jMq3iw XVUC&pg PA57&dq 22undulose extinction 22&lr &ei WUqISvXPEpu ygTO0f2yDg v onepage&q 22undulose 20extinction 22&f false Passchier, C.W. & Trouw, R.A.J. 2005. Microtectonics, 2nd edition, Springer, 366pp. ref Undulose extinction is very common in quartz , so much so that it is often used as a diagnostic feature of that mineral, and feldspar of various sorts, but is possible in almost any mineral. It is possible to identify the presence of a porphyroblast before the main deformation event in a metamorphic reaction, if a porphyroblast displays clear undulose extinction it is a clear sign that it existed before the main rock was created. References Reflist Commons Category Undulose extinction Category Optical mineralogy Petrology stub cs Undul zn zh en de Undul se Ausl schung es Extinci n ondulante ... more details
The Aptian extinction was an extinction event of the early Cretaceous Period . It is dated to c. 116 or 117 million years ago, in the middle of the Aptian stage of the geological time scale , and has sometimes been termed the mid Aptian extinction event as a result. It is classified as a minor extinction event, rather than a major event like the famous Cretaceous Tertiary extinction event that brought about the end of the age of dinosaurs and the Mesozoic Era . The Aptian event is most readily detected among marine rather than terrestrial fossil deposits. Nonetheless, The Aptian Extinction Event is an episode of importance, deserving a higher status among other minor events. ref Archangelsky, Sergio. The Tic Flora Patagonia and the Aptian Extinction Event. Acta Paleobotanica 41 2 , 2001, pp. 115 22. ref The Aptian event may have been causally connected with the Rahjamal Traps Volcano volcanism episode in the Bengal region of India, associated with the Kerguelen hotspot of volcanic activity. ref Vincent Courtillot Courtillot, Vincent . Evolutionary Catastrophes The Science of Mass Extinctions. Cambridge, Cambridge University Press, 1999 p. 95. ref At the time in question, c. 116&ndash 117 Annum Ma , India was located in the southern Indian ocean plate tectonics had not yet moved the Indian landmass into its present position. References references geochronology stub paleo stub Category Cretaceous extinctions Category Geochronology Category Extinction events ExtEvent nav hu Apti kihal si esem ny zh ... more details
File On off keying eye diagram.svg thumb 300px right Eye diagram showing an example of two power levels in an On off keying OOK modulation scheme which can be used to calculate extinction ratio. P sub 1 sub and P sub 0 sub are represented by binary 1 and binary 0 respectively. In telecommunication s, extinction ratio r sub e sub is the ratio of two optical Power physics power levels, of a digital signal generated by an optical source , e.g., a laser diode , where P sub 1 sub is the optical power level generated when the light source is on, and P sub 0 sub is the power level generated when the light source is off. The extinction ratio may be expressed as a fraction, in decibel dB , or as a percentage . ref cite web url http www.timbercon.com Extinction Ratio.html title Extinction Ratio publisher timbercon accessdate 2009 05 14 ref math r e frac P 1 P 0 math References references FS1037C MIL STD 2196 Category Telecommunications terms Category Ratios electronics stub de Extinktionsverh ltnis ... more details
Olson s Extinction was a mass extinction that occurred mya 270 in the Early Guadalupian of the Permian period and which predated the Permian Triassic extinction event . ref name SahneyBenton2008RecoveryFromProfoundExtinction cite journal ref harv last1 Sahney first1 S. last2 Benton first2 M.J. title Recovery from the most profound mass extinction of all time journal Proceedings of the Royal Society Biological year 2008 volume 275 issue 1636 pages 759 pmid 18198148 pmc 2596898 doi 10.1098 rspb.2007.1370 url http journals.royalsociety.org content qq5un1810k7605h5 fulltext.pdf ref Extinction Patterns The first evidence of extinction came when Everett C. Olson noted a hiatus between Early Permian faunas dominated by pelycosaurs and therapsid dominated faunas of the Middle and Late Permian. First considered to be a preservational gap in the fossil record, the event was originally dubbed Olson s Gap . ref name LSG04 cite journal ref harv last Lucas first S. G. title A global hiatus in the Middle ... that indicated an extinction pulse preceding the Permian Triassic extinction event had a profound ... level and referred to the event as Olson s Extinction . Furthermore, they showed that even discounting the sparse fossil assemblages from the extinction period, the event can be confirmed by the stages ... of these animals survived Olson s Extinction. ref name Modesto2011 cite journal ref harv author Sean ... s Extinction before the impact of the Permian Triassic extinction event . Estimates of recovery ... during Olson s Extinction, most notably the origin of therapsida therapsids , a group that includes ... published app54 app20080071.pdf doi 10.4202 app.2008.0071 ref Current Relevance A future extinction ... extinction of animal species. A better understanding of the process of extinction in the past ... that led to the Olson s Extinction and the Permo Triassic Extinction and the recovery of ecosystem ... crisis. References references Category Extinction events es Extinci n de Olson fr Lacune d Olson ... more details
Extinction debt is a concept in ecology that describes the future extinction of species due to events in the past. Extinction debt occurs because of time delays between impacts on a species, such as destruction ... to extinction. Technically, extinction debt generally refers to the number of species in an area ... to any occurrence of delayed extinction. In discussions of Conservation biology Threats to biodiversity threats to biodiversity , extinction debt is analogous to the climate commitment in climate ... greenhouse gasses are emitted. Similarly, the Holocene extinction current extinction may continue long after human impacts on species halt. Extinction debt may be local or global, but most examples ... species and species with very specific habitat requirements specialists . ref name Kuussaari2009 Extinction ... reverse extinction debt. Immigration credit is the corollary to extinction debt. It refers to the number ... of an ecosystem . ref name Jackson2010 cite doi 10.1016 j.tree.2009.10.001 ref Causes Extinction debt is caused by many of the same drivers as extinction . The most well known drivers of extinction ... j.tree.2009.04.011 ref These cause extinction debt by reducing the ability of species to persist ... ultimately go extinct. Pollution may also cause extinction debt by reducing a species birth rate or increasing its death rate so that its population slowly declines. ref name Loehle1996 Extinction debts ... change . ref name Thomas2006 cite doi 10.1016 j.tree.2006.05.01 ref Extinction debt may also occur due to the loss of Mutualism biology mutualist species. In New Zealand, the local extinction of several ... 10.1126 science.1199092 ref Time scale The time to payoff of extinction debt can be very long. Islands ... bryozoan populations dropped severely at this time, extinction of these species took another 1 2 million years. ref name Jackson2009 cite doi 10.1098 rspb.2009.0844 ref Extinction debts incurred due to human actions have shorter timescales. Local extinction of birds from rainforest fragmentation occurs ... more details
, the site of damage related to visual extinction. Visual extinction is a neurological disorder which ..., hemispatial neglect . Visual extinction has the characteristic symptom of difficulty to perceive contralesional ... Vuilleumier, PO, Rafal, RD 2000 . A systematic study of visual extinction between and within field ... History Visual Extinction is the result of unilateral cerebral damage ref name Pavlovskaya Pavlovskaya, Marina, Sagi, Dov, Soroker, Nachum, Ring Haim 1997 . Visual extinction and cortical connectivity ... 00028 1 ref and has always been poorly understood. Researchers have been studying visual extinction ... right hemisphere of the Human brain brain . Studies have suggested that visual extinction may ... affected by the extinction. ref name Vuilleumier Research done by Pavlovskaya, Sagi, Soroker and Ring show that visual extinction is dependent on simple stimuli properties. These properties ... Pavlovskaya Physiological Basis Visual extinction arises from damage to the parietal lobe of the brain ... harm. Although both sides of the brain are vulnerable to such damage, it is more unusual for extinction ..., HO 2007 . Incidence of visual extinction after left versus right hemisphere stroke. Stroke 38 12 ... the damage, since it is done in the opposite brain hemisphere. This implies that extinction ... and attentional limits in visual extinction . Neurocase 11 6 , 452 462. http www.ncbi.nlm.nih.gov ... extinction experiments such as those done by Vuilleumier and Rafal eliminate the connection of these effects with visual extinction. ref name Vuilleumier Historically, it was believed that the parietal damage weakened afferent neuron input to the visual cortex , and so the extinction event was caused ... not account for the ability of extinction patients being able to correctly identify contralesional ... visual extinction? Neurophysiological evidence. Neuropsychologia 39 12 , 1354 1366. ref where patients who show extinction also display aggravated delays in their reaction time to stimuli, both when ... more details
notability Music date May 2011 Infobox Album See Wikipedia WikiProject Albums Name Psalms Of Extinction Type Album Artist Pain Swedish band Pain Cover Psalms of Extinction.jpg Released April 16, 2007 Recorded Genre Industrial metal , Heavy metal music Heavy metal , Techno Length 48 00 Label Roadrunner Records Roadrunner Producer Peter T gtgren Last album Dancing with the Dead br 2005 This album Psalms Of Extinction br 2007 Next album Cynic Paradise br 2008 Psalms Of Extinction is the fifth studio album by Swedish Metal band Pain Swedish band Pain , released on April 16, 2007 in Europe Europe s Nordic Territories and May 7, 2007 in the rest of Europe . The first Pain album since their debut to lack a charting single, it hit 21 on the Swedish charts but dropped off after only two weeks. ref name charts http swedishcharts.com showitem.asp?interpret Pain&titel Rebirth&cat a Pain in Swedish Charts , swedishcharts.com. ref Zombie Slam is the first song from the album to receive a video. Musicians featured on the album include Mikkey Dee Mot rhead , ex Don Dokken, King Diamond on Zombie Slam recording drums, Children of Bodom frontman Alexi Laiho on Just Think Again guitar solo , and Peter Iwers of In Flames on the first two songs bass guitar . Track listing All songs written by Peter T gtgren except where noted. ref http www.allmusic.com album psalms of extinction r1073376 Psalms of Extinction Overview , AllMusicGuide. ref Save Your Prayers 3 43 Nailed to the Ground 4 11 Zombie Slam 3 32 Psalms of Extinction 4 09 Clouds of Ecstasy 3 16 Play Dead Arnold, Bj rk , Wobble 4 03 Does It Really ... of Extinction is unlikely to wow serious industrial music freaks as anything remotely groundbreaking ... MySpace Pain Musical Project Category Pain albums Category 2007 albums es Psalms of Extinction fr Psalms of Extinction it Psalms of Extinction ru Psalms of Extinction fi Psalms of Extinction sv Psalms of Extinction ... more details
Image Extinction cross.jpg thumb right An extinction cross photographed with a CCD camera using a green laser beam and a polarizer The extinction cross is an optical phenomenon that is seen when trying to extinguish a laser beam or non planar white light using crossed polarizer s. Ideally, crossed 90 rotated polarizers block all light, since light which is polarized along the polarization axis of the first polarizer is perpendicular to the polarization axis of the second. When the beam is not perfectly collimated light collimated , however, a characteristic fringing pattern is produced. See also Polarization waves Further reading http ruby.colorado.edu smyth G30106.html Mineralogy notes 6 See 6.3.5. Review of Uniaxial Optical Properties http www.microscopyu.com tutorials java dic dicalignment index.html Nikon MicroscopyU See Figure 1a Category Polarization Category Optical phenomena optics stub ... more details
refimprove date June 2009 Extinction is a neurological disorder characterized by inability to recognize two simultaneous Stimulus physiology stimuli on opposite sides of the body, or proximally and distally , though either one can be sensed alone. ref name osullivan O Sullivan, S.B & Schmitz, T.J. 2007 . Physical Rehabilitation. Philadelphia, PA Davis. ISBN 978 0 8036 1247 1. ref For example, a person displaying Somatosensory system tactile extinction could feel a thumbtack pressed into the forefinger on either side normally, but if two thumbtacks were applied simultaneously, one to each forefinger, the subject would only feel one. Extinction is a subtle form of hemispatial neglect that is usually associated with lesion s of the right parietal lobe . It is less common in lesions of the Lateralization of brain function dominant usually left parietal lobe , possibly because the dominant hemisphere is more specialized for language than it is for visuospatial functions. ref name Blumenfield cite book last Blumenfield first Hal title Neuroanatomy Through Clinical Cases publisher Sinauer year ... or subcortical lesions. ref name Blumenfield Whatever the location, the extinction will manifest on the opposite side of the body. It can take several forms including tactile, visual extinction and less ... Clinical Cases. Sunderland MA Sinauer. ISBN 978 0 87893 058 6. ref In visual extinction, a person ... presentation in visual extinction a pyschophysical study. Journal of Neuropsychology, 4 167 179 ref ... on the right side of the brain. Testing tactile, visual, or auditory extinction are useful tests of sensory hemispatial neglect. ref name blumenfeld In clinical practice, extinction can be measured ... brain.oxfordjournals.org cgi content full 123 6 1263 A systematic study of visual extinction in Brain ... extinction in Cognitive Neuroscience and Neuropsychology http w3.uniroma1.it aglioti SCNL Publications ... extinction within and between hemispaces in Neuropsychology Category Neurological disorders neuroscience ... more details
For the extinction of mankind, see Human extinction . Infobox musical artist See Wikipedia WikiProject Musicians name Extinction of Mankind image caption The current line up of Extinction of Mankind image size background group or band alias origin England genre Crust punk , extreme metal , anarcho punk years active 1992&ndash present label Profane Existence , Moshpit Tragedy Records associated acts website current members Ste, Scoot, Ginny, Tony past members Fozzy, Foz, Mass notable instruments Extinction of Mankind is an England English crust punk band, formed in 1992. Biography The original line up consisted of Ste vocals , Mass Guitar , Fozzy Bass and Foz Drums . After several gigs the band recorded their first split EP with the band Warcollapse, it saw a release at the end of 1993. Next, the band headed out on a tour in Sweden with the crust band Doom band Doom . They would go on to record another split ep, with Doom this time. This album was released in 1994. The band returned to Europe and picked up another tour with Doom. During this time the Weakness EP was recorded and released ... matters. During this time, the Extinction of Mankind Misery split EP was planned. In early 1998 ... Wolfpack and Skitsystem . During this time the Extinction of Mankind Misery split was finally ... was not re pressed. ref http www.aversionline.com blahg 2007 05 01 step on it and extinction ... reviews cd review extinction of mankind ale to england Metalinjection review of Ale to England ref ... LP 1997 The Nightmare Seconds... LP 2004 Northern Scum LP 2006 Splits Extinction of Mankind Doom band Doom Split Extinction of Mankind Misery band Misery Split Extinction of Mankind Warcollapse Split Extinction of Mankind Phobia Split References Reflist External links http www.myspace.com extinctionofmankind EOM Official Myspace http www.last.fm music Extinction of Mankind Extinction of Mankind on Last.fm ... punk groups Category Musical groups established in 1992 it Extinction of Mankind ... more details
Local extinction , also known as extirpation , is the condition of a species or other taxon which ceases to exist in the chosen geographic area of study, though it still exists elsewhere. Local extinctions are contrasted with global extinctions. Local extinctions may be followed by a replacement of the species taken from other locations wolf reintroduction is an example of this. Conservation Local extinctions mark a change in the ecology of an area. The area of study chosen may reflect a natural subpopula political, boundaries, or both. The Cetacean Specialist Group of the International Union for Conservation of Nature IUCN has assessed the threat of a local extinction of the Black Sea stock of Harbour Porpoise Phocoena phocoena which touches six different countries. COSEWIC , by contrast, investigate wildlife only in Canada, so assesses only the risk of a Canadian local extinction even for species which cross into the United States or other countries. Other subpopulations may be naturally ... extinction, particularly the saltwater crocodile Crocodylus porosus which has been extirpated from Vietnam ... spells not only the local extinction of rhinoceroses in Cameroon, but also the global extinction of the Western ... a local extinction useful for research In the case of the Bay Checkerspot , scientists, including Paul R. Ehrlich , chose not to intervene in a local extinction, using it to study the danger to the world ... checkerspot node4.html Local extinction . Population Viability Analysis Bay Checkerspot Butterfly ... mostly only categorizes whole species or subspecies, assessing the global risk of extinction, in some ... of local extinction Marsh Deer three subpopulations assessed Blue Whale , North Pacific stock and North ... in the wild. No plant or fungi subpopulations have been assessed by the IUCN. Local extinction ... Extinction List of extinct animals Threatened species References Reflist DEFAULTSORT Local Extinction Category Extinction ca Extinci local fr Esp ce extirp e ... more details
extinction refers to the extinction event extinction of species during the present Holocene ... releases ?4143 Extinction crisis continues apace ref However, most extinctions go undocumented. According ... species per year may be the present rate of extinction. ref S.L. Pimm, G.J. Russell, J.L. Gittleman ... extinction includes the disappearance of large mammal s, known as megafauna , starting roughly ..., are sometimes referred to as the Quaternary extinction event or Ice Age extinction. However, the Holocene extinction may be regarded as continuing into the 21st century. There is no general agreement on whether to consider more recent extinctions as a distinct event, merely part of the Quaternary extinction ... these most recent parts of the extinction have plant s also suffered large losses. Overall, the Holocene extinction can be characterized by climate change and humanity s presence. The prehistoric extinction .... The ongoing extinction seems more outstanding in light of separating recent extinctions approximately since the industrial revolution from the Pleistocene extinction near the end of the last glacial period . The latter is exemplified by the extinction of large herbivores such as the woolly ... of extinctions since 11,000 BCE. If only considering human impact, the vulnerability and extinction ... to separate the Pleistocene extinction from the recent one. Nevertheless, the Pleistocene extinction ... Solitaire . Ongoing Holocene extinction One scientist estimates the extinction may be 10,000 times the background extinction rate the average between mass extinction events . ref E.O. Wilson. 2005. The Future ... studies, most scientists predicted a much lower extinction rate than this outlying estimate. ref J.H.Lawton and R.M.May, Extinction Rates , Oxford University Press , Oxford, UK ref Megafaunal ... influences. Extinction rates are minimized in the popular imagination by the survival of captive ... Thylacine or Tasmanian Tiger, Thylacinus cynocephalus , Tasmania extinction disputed Quagga ... more details
annotated image Extinction An extinction event also known as mass extinctionextinction level event ELE ... when the rate of extinction increases with respect to the rate of speciation . Because the majority ..., recorded extinction events affect the easily observed, biologically complex component of the biosphere ... 0 pages 5 ref but extinction occurs at an uneven rate. Based on the fossil record , the background rate of extinction s on Earth is about two to five alpha taxonomy taxonomic family biology families ... extinction rates because of their superior fossil record and stratigraphic range compared to land ... the background extinction rate. The most recent, Cretaceous Tertiary extinction event , which occurred approximately 65.5 million years ago Ma , was a large scale mass extinction of animal and plant ... chosen for describing an extinction event as major , and the data chosen to measure past diversity. Major extinction events In a landmark paper published in 1982, Jack Sepkoski and David ... of decreasing extinction rates during the Phanerozoic, ref name Alroy2008 but as more stringent ... of extinction events. ref name Alroy2008 Cretaceous Tertiary extinction event End Cretaceous or K T extinction 65.5 annum SI prefix multipliers Ma at the Cretaceous . Maastrichtian Paleogene . Danian ... Paleogene or K Pg extinction event by many researchers. About 17 of all families, 50 of all genera ... 3C4 3ATEOTDI 3E2.0.CO 3B2 title The extinction of the dinosaurs in North America journal GSA Today ... of extinction between and among different clade s. Mammal s and bird s emerged as dominant land vertebrates in the age of new life. Triassic Jurassic extinction event End Triassic 205 Ma at the Triassic ... extinction event End Permian 251 Ma at the Permian Triassic transition. Earth s largest extinction ..., but new taxa became dominant after the extinction. ref name McElwain2007 cite journal author McElwain, J.C. coauthors Punyasena, S. W. year 2007 title Mass extinction events and the plant fossil ... more details
Encyclopedia
top
