In populationgenetics , fixation is the change in a gene pool from a situation where there exist at least two variants of a particular gene allele to a situation where only one of the alleles remains. The term can refer to a gene in general or particular nucleotide position in the DNA chain locus genetics locus . In the process of substitution , a previously non existent allele arises by mutation and undergoes fixation by Biological inheritance spreading through the population by random genetic drift and or positive Natural selection selection . Once the allele frequency frequency of the allele is at 100 , i.e. being the only gene variant present in any member, it is said to be fixed in the population ... Inc., USA. Hartl, D.L. and Clark, A.G. 2006 Principles of PopulationGenetics 4th edition . Sinauer Associates Inc., USA. Kimura, M. 1962 On the Probability of Fixation of Mutant Genes in a Population. Genetics 47 713 719. http www.pubmedcentral.nih.gov articlerender.fcgi?tool pubmed&pubmedid 14456043 PubMed Central genetics stub Category Populationgenetics bg es Alelo ... . Probability of fixation Under conditions of genetic drift alone, every finite set of genes or alleles ... . This fact can be used to derive the rate of gene fixation of a neutral allele that is, one not under any form of selection for a population of varying size provided that it is finite and nonzero . Because ... time that an allele will ultimately become fixed at its locus is simply its frequency math p math in the population at that time. For example, if a population includes allele A with frequency equal to 20 ... force . For a diploid population of size N and neutral mutation rate math mu math , the initial frequency ... 2N mu math . Since the fixation rate is the rate of novel neutral mutation multiplied by their probability of fixation, the overall fixation rate is math 2N mu times frac 1 2N mu math . Thus, the rate of fixation for a mutation not subject to selection is simply the rate of introduction of such mutations ... more details
wiktionary Fixation may refer to the following In science Fixation psychology , the state in which an individual becomes obsessed with an attachment to another human, an animal, or an inanimate object Fixation visual maintaining the gaze in a constant direction Fixation alchemy , a process in the alchemical magnum opus alchemy magnum opus Carbon fixation , a biochemical process, usually driven by photosynthesis, whereby carbon dioxide is converted into organic compounds Nitrogen fixation , a process by which nitrogen is converted from its inert molecular form to a compound more readily available and useful to living organisms Fixationpopulationgenetics , the state when every individual in a population has the same allele at a particular locus Fixation histology in biochemistry, histology, cell biology and pathology, the technique of preserving a specimen for microscopic study Fixation agent is a Process chemicals process chemical In business and law Fixation in business refers to a company s reluctance to change to suit current market conditions, thus increasing the probability that the company will make larger numbers and greater severities of poor decisions. Fixation in law refers to a work entitled to copyright protection e.g. music, literature, painting, etc. . Only works fixed in a medium can be copyrighted, not the ideas behind those works. In online marketing Fixation online eye tracking refers to the test subject fixing on a particular portion of the page. It is used to determine which areas of a web page receive the most views. This is used to adjust where content resides on a web page to maximize its exposure. Fixation may also refer to the game by 2DArray, which is puzzle in genre and is hosted on Kongregate, Armour games and other websites. Synonyms obsession , immobile immobilization , adhesive n. disambig da Fiksering de Fixierung fr Fixation he nl Fixatie ja uk ... more details
is met, the probability that a new advantageous mutant becomes fixationpopulationgenetics ...Evolutionary biology Populationgenetics is the study of allele frequency distribution and change under ... . Populationgenetics was a vital ingredient in the emergence of the modern evolutionary ... moth. Populationgenetics is the study of the frequency and interaction of alleles and genes in populations ... name Ewens W.J. 2004 cite book author Ewens W.J. year 2004 title Mathematical PopulationGenetics ... . Populationgenetics describes natural selection by defining fitness biology fitness as a propensity ... of populationgenetics, many biologists doubted that small difference in fitness were sufficient ... cite journal author Hermisson J, Pennings PS title Soft sweeps molecular populationgenetics of adaptation ... force. The populationgenetics of genetic drift are described using either branching process es or a diffusion ... and Moran models of populationgenetics. Assuming genetic drift is the only evolutionary force acting ... 10.1002 bies.20516 ref harv ref Complications Basic models of populationgenetics consider only one ... Lewontin 1974 , the theoretical task for populationgenetics is a process in two spaces a genotypic space and a phenotypic space . The challenge of a complete theory of populationgenetics is to provide ... the resulting population P sub 2 sub back to genotype space G sub 2 sub where Mendelism Mendelian genetics ... of evolutionary theory that exist in parallel, traditional populationgenetics operating in the genotype ... , are asexual. The populationgenetics of microorganism s lays the foundations for tracking the origin and evolution of antibiotic resistance and deadly infectious pathogen s. Populationgenetics of microorganisms ... adaptive peaks. The work of Fisher, Haldane and Wright founded the discipline of populationgenetics ... The mathematics of populationgenetics were originally developed as the beginning of the modern evolutionary synthesis . According to Beatty 1986 , populationgenetics defines the core of the modern ... more details
Nitrogen fixation is a process, biological, abiotic, or synthetic by which nitrogen N sub 2 sub in the Earth ... author Postgate, J year 1998 title Nitrogen Fixation, 3rd Edition publisher Cambridge University Press ... not easily react with other chemicals to form new compounds. Fixation processes free up the nitrogen atoms from their diatomic form N sub 2 sub to be used in other ways. Nitrogen fixation, natural ... and RNA and amino acid s for protein s. Therefore nitrogen fixation is essential for agriculture and the manufacture ... gunpowder, dynamite, TNT, etc. Nitrogen fixation occurs naturally in the air by means of lightning ... date April 2012 Nitrogen fixation also refers to other biological conversions of nitrogen, such as its ... with diazotrophs. Biological nitrogen fixation was discovered by the German agronomist Hermann Hellriegel and Dutch microbiologist Martinus Beijerinck . Biological nitrogen fixation linked from Biological nitrogen fixation File Nitrogen Cycle.jpg thumb 320px right Schematic representation of the nitrogen cycle . Abiotic nitrogen fixation has been omitted. Biological nitrogen fixation BNF occurs when ... diazotrophs Cyanobacteria Green sulfur bacteria Azotobacteraceae Rhizobia Frankia Nitrogen fixation ... analysis publisher Caister Academic Press isbn 978 1 904455 86 8 ref Nitrogen fixation by cyanobacteria ... of nitrogen fixation in cyanobacteria N. Latysheva, V.L. Junker, W.J. Palmer, G.A. Codd and D. Barker ... cyan id http www.horizonpress.com cyan isbn 978 1 904455 15 8 ref Nitrogen fixation by cyanobacteria ... fixation include the legume family &ndash Fabaceae &ndash with taxa such as clover ... genetics genetic and physiological requirements were present in an incipient state in the last common ... fern Azolla species Cycad s Gunnera Industrial nitrogen fixation Haber process main Haber process Artificial ... research has been conducted on the discovery of catalysts for nitrogen fixation, often with the goal ... ref Ambient nitrogen reduction Catalytic chemical nitrogen fixation at temperatures considerably ... more details
http www.bioperl.org wiki HOWTO PopGen Population Statistics using Bio PopGen PopStats BioPerl Bio PopGen PopStats popgen DEFAULTSORT Fixation Index Category Populationgenetics fr Indice de fixation ...The fixation index F sub ST sub is a measure of population differentiation, genetic distance , based ... within and between populations is frequently used in the field of populationgenetics . The values range ... genetics microsatellite s. It is a special case of F statistics , developed in the 1920s by Sewall Wright . Definition The fixation index, F sub ST sub , is simply a measure of the diversity of randomly chosen alleles within the same sub population relative to that found in the entire population. It is often expressed as the proportion of genetic diversity due to allele frequency differences ... 10 issue 9 pages 639 650 last Holsinger first Kent E. coauthors Bruce S. Weir title Genetics in geographically .... last3 Maddison first3 WP. title Estimation of Levels of Gene Flow from DNA Sequence Data journal Genetics ... population. The average pairwise difference within a population can be calculated as the sum of the pairwise ... ST sub , the value math Pi text Within math should be computed for each population and then averaged. Otherwise, random sampling of pairs within populations puts all the weight on the population with the largest ... frequency proportion of the Minor allele frequency minor allele at SNP i in population ... of chromosomes analysed in that population. The lack of the j subscript in the denominator indicates ... on a world scale a kinship between two individuals of the same human population is equivalent to kinship ... volume 24 issue 2 pages 141 147 last Harpending first Henry title Kinship and Population Subdivision journal Population & Environment date 2002 11 01 isbn 1020815420693 ref Autosomal genetic ... European Population Genetic Substructure Further Definition of Ancestry Informative Markers for Distinguishing ... ST sub External links BioPerl References references Evolution and the Genetics of Populations Volume ... more details
Unreferenced stub auto yes date December 2009 Fixation in alchemy refers to a process by which a previously Volatility chemistry volatile substance is transformed into a form often solid that is not affected by fire . It separates the substance or object and puts it back in the same or different shape at a subatomic level. Fixation is sometimes listed as one of the processes required for transformation of a substance, or completion of the alchemical magnum opus alchemy magnum opus . Alchemy DEFAULTSORT Fixation Alchemy Category Alchemical processes Occult stub ... more details
Interlocking Nail System Accessed 10 February 2011 ref Open Reduction Internal Fixation ORIF Open Reduction Internal Fixation ORIF involves the implementation of implants to guide the healing ... s. Internal fixation refers to fixation of screws and or plates, intramedullary bone nails femur , tibia , humerus to enable or facilitate healing . Rigid fixation prevents micro motion across lines ... dynamic compression plate are used. Open Reduction Internal Fixation techniques are often used in cases ... to remove the hardware. Closed Reduction Internal Fixation Closed Reduction Internal Fixation CRIF is Reduction orthopedic surgery reduction without any open surgery, followed by internal fixation. It appears ... and internal fixation is recommended. ref cite pmid 19047713 ref See also Arbeitsgemeinschaft f r Osteosynthesefragen External fixation Notes reflist External links http www.aofoundation.org wps portal ... And Techniques Of Internal Fixation Of Fractures 28MB PPT Bone, cartilage, and joint procedures spacing DEFAULTSORT Internal Fixation Category Implants Category Orthopedic surgery ar de Interne Fixation ... more details
A fixation agent is a chemical that is capable to fixate one Chemical substance substance to another substance that the first substance have little Chemical affinity affinity to. Applications Pulp and paper production In Pulp mill pulp and Papermaking paper production fixation agents are used to fixate pitch resin pitch or stickies papermaking stickies to the Cellulose paper fibers to transport the problems out of the Process industries production process and have a cleaner production plant. As fixation agents used in pulp and paper production are minerals like talc and bentonite or different cationic polymers like polyDADMAC . The polymer based fixation agents are often called detackifier s as they reduce the tackiness of the pitch and stickies. Category Process chemicals chem stub ... more details
Other uses Fixation disambiguation Fixation Quote farm date October 2011 Fixation is a concept originated ..., Comprehensive Dictionary of Psychoanalysis London 2009 p. 112 ref Subsequently Fixation acquired ... throughout life . ref http www.answers.com topic fixationFixation ref Freud In Three Essays on the Theory ... of voyeurs from the after effects of infantile object choice...an incestuous fixation of his or her ... Freud theorized that some humans may develop psychological fixation due to A lack of proper gratification ... by an increased pertinacity or susceptibilty to fixation in persons who are later to become ... at a very early age which leads to a kind of partial fixation , which then constitutes ... Penguin 1995 p. 73 ref Whether a particularly obsessive attachment is a fixation or a defensible expression of love is at times debatable. Fixation to intangibles i.e., ideas, ideologies, etc ... ref As Freud s thought developed, so too did the notion of a succession of possible fixation points during development, and of the relation between this succession of fixation points and the choice ... Library 10 p. 132 ref However he continued to view fixation as the manifestation of very early linkages ... in those impressions . ref Freud, Psychopathology pp. 137 8 ref Fixation has been compared to the way ... ref might seem a ready explanation for the human phenomenon of fixation. Freud, however, wanted to loosen ... or neurotic fixation. Post Freudians For Melanie Klein , the fixing of the libido at a given ... of Child Psychoanalysis Routledge 1998 p. 129 ref She considered that a fixation that leads to a symptom ... distinguished two variants in stage fixation that of zone and of mode . Thus at the oral stage there may be a zone fixation, i.e., the individual holds on to oral pleasures , or there may be a mode fixation...he always wants to get whether by mouth and senses, or by other apertures, receptors, or behaviours. This kind of fixation will later be carried over to other zones . ref Erik H. Erikson ... more details
Fixation disparity exists when there is a small misalignment of the eyes when viewing with binocular vision . The misaligment may be vertical, horizontal or both. The misalignment a few minute of arc minutes of arc is much smaller than that of strabismus , which prevents binocular vision, although it may reduce a patient s level of stereopsis . A patient may or may not have fixation disparity and a patient may have a different fixation disparity at distance than near. Measurement of fixation disparity There are several methods to quantify fixation disparity. The Mallett card, the Bernell lantern slide, the Wessen Card and the Disparometer may be used. A patient s associated phoria is the amount of prism needed to reduce their fixation disparity to zero minutes of arc. The Mallett Fixation Disparity Unit Instrument used to measure the associated heterophoria or compensating prism . It consists of a small central fixation letter X surrounded by two letters O, one on each side of X, the three letters being seen binocularly, and two coloured polarized vertical bars in line with the centre of the X which are seen by each eye separately. The instrument can be swung through 90 to measure any vertical fixation disparity. The associated phoria is indicated by the misalignment of the two polarized bars when the subject fixates the X through cross polarized filters in front of the eyes. The amount of associated phoria is given by the value of the base in or base out prism power necessary to produce alignment. The unit can also be used to detect suppression. See Disparometer associated heterophoria uncompensated heterophoria. See also Diplopia Eye examination Ocular dominance Phoria Vision therapy References Eskridge, JB, Amos, JF, Bartlett, JD. Clinical procedures in Optometry. Lippincott Co. New York 1991. Category Optometry Category Diseases of the eye and adnexa eye stub nl Fixatiedisparatie ... more details
Vertebral fixation also known as spinal fixation is a neurosurgery neurosurgical procedure in which two or more vertebra e are anchored to each other through a synthetic vertebral fixation device , with the aim of reducing vertebral mobility and thus avoiding possible damage to the spinal cord and or nerve root spinal roots . Indications A vertebral fixation procedure may be indicated in cases of vertebral fracture , List of vertebral deformities vertebral deformity , or degenerative vertebral disorders such as spondylolisthesis . Vertebral fixation devices The device used to achieve vertebral fixation is usually a permanent rigid or semi rigid prosthesis made of titanium examples include rods, plates, screws, and various combinations thereof. A much less common alternative is the use of a resorbable fixation device, composed of a bio resorbable material for example, this could be a polymer capable of being degraded into acidic products, and thus in need of including a buffering agent to avoid acid damage which may damage the bone adjacent to the device . The Medical community currently uses several different techniques for stabilizing the posterior region of the spine anatomy spine . The most radical of these techniques is spinal fusion . In recent years decades spinal surgeon s have begun to rely more heavily on mechanical implants, which provide increased stability without so severely limiting the recipient s range of motion. A number of devices have been developed that allow ... than spinal fusion. The Spinal Fixation Device was developed in response to this need for a device ... a wide range of motion. A Spinal Fixation Device is a spinal stabilization device that meets ... of pedicle fasteners. Image with unknown copyright status removed Image Spinal fixation device.png frame Spinal Fixation Device The illustration depicts a spinal fixation device . The number 110 refers ... vertebrae . More information about this specific spinal fixation device can be found in The United ... more details
In the fields of histology , pathology , and cell biology , fixation is a chemical process by which biological ... . Fixation terminates any ongoing biochemical reactions, and may also increase the mechanical strength or stability of the treated tissues. Purposes of fixationFixation of tissue is done for several ... for Clinical Pathology Press location Hong Kong isbn 9780891895817 page 2 pages url accessdate ref Fixation ... fixation does alter the sample and introduce artifacts that can interfere with interpretation of cellular ... microscopy to be simply an artifact of chemical fixation. ref cite journal author Ryter A title ... 2092.2000 pmc 90018 pmid 10898680 ref Standardization of fixation and other tissue processing ... that minimize artifacts in areas of interest. Fixation process Fixation is usually the first stage .... Therefore, the choice of fixative and fixation protocol may depend on the additional processing steps ... to a specific protein target. Prolonged fixation can chemically mask these targets and prevent antibody ... used. Expand section date June 2008 Types of fixation There are generally three types of fixation process Heat fixation After a smear has dried at room temperature, the slide is gripped by tongs or a clothespin ... the organism to the slide. Routinely used with bacteria and archaea. Heat fixation generally preserves ... autolysis. Heat fixation cannot be used in the capsular stain method as heat fixation will shrink or destroy the capsule glycocalyx and cannot be seen in stains. Perfusion Fixation via blood flow. The fixative ... the deeper tissue. Best in a slight vacuum. Chemical Fixation In this process, structures are preserved ... for fixation is glutaraldehyde . It operates in a similar way to formaldehyde by causing deformation ... its rate of diffusion across membranes is slower than formaldehyde. Consequently glutaraldehyde fixation ... of the tissue sample. One of the advantages of glutaraldehyde fixation is that it may offer a more ... fixation protocols call for a combination of formaldehyde and glutaraldehyde so that their respective ... more details
Refimprove date July 2009 Target fixation is a process by which the brain is focused so intently on an observed object that awareness of other obstacles or hazards can diminish. Also, in an avoidance scenario, the observer can become so fixated on the target that they will forget to take the necessary action to avoid it, thus colliding with the object. This is a common issue for motorcyclists and mountain bikers. A motorcycle or bicycle will tend to go where the rider is looking if the rider is overly focused on an obstacle, the cycle can collide with that object simply because of the rider s focus on it, even though the rider is ostensibly trying to avoid it. The term target fixation was used in World War II fighter bomber pilot training to describe pilots flying into targets during a strafing or bombing run. ref name Colgan2010 Citation title Allied Strafing in World War II A Cockpit View of Air to Ground Battle first William B. last Colgan publisher McFarland year 2010 isbn 9780786448876 url http books.google.com books?id GuuOyzdx1UAC&pg PA44 ref Target fixation may also refer to a phenomenon where a skydiver may forget to pull the Pullstring ripcord because he or she is so focused on the landing area. ref http www.greenharbor.com fffolder carkeet.html The Free Fall Research Page Unplanned Freefall? Some Survival Tips by David Carkeet Bot generated title ref Notes Reflist References Refbegin Citation title The Upper Half of the Motorcycle On the Unity of Rider and Machine first Bernt last Spiegel postscriopt Translated by Meredith Hassall publisher Whitehorse Press year 2010 ISBN 9781884313752 Citation last Vanderbilt first Tom title Traffic why we drive the way we do and what it says about us first Tom last Vanderbilt publisher Random House year 2008 ISBN 9780307264787 Refend DEFAULTSORT Target Fixation Category Cognition Category Motorcycle dynamics cognitive psych stub motorcycle stub de Target fixation ... more details
years ago Hippocrates described a form of external fixation to splint a fracture of the tibia. The device ... of Antwerp, Belgium independently invented the modern concept of unilateral external fixation ... fracture fixationfixation overview 1.html Fracture Fixation Overview Bone, cartilage, and joint ... more details
Fixation or visual fixation is the maintaining of the Visual perception visual gaze on a single location. Humans and other animals with a fovea typically alternate saccade s and visual fixations, the notable exception being in smooth pursuit , controlled by a different neural substrate that appear to have developed for hunting prey. There are three categories of fixational eye movements microsaccade s, ocular drift s, and ocular microtremor . Fixational eye movement has been found in a number of species, including humans, other primates, cats, rabbits, turtles, salamanders, owls. Although their existence has been known since the 1950s, the role and importance of fixational eye movement is still debated. reading activity Reading involves fixating on a successive locations across the page or screen. Visual fixation is never perfectly steady fixational eye movement occurs involuntarily. The term fixation can also be used to refer to the point in time and space of focus rather than to the act of fixating a fixation in this sense is the point between any two saccades, during which the eyes are relatively stationary and virtually all visual input occurs e.g., Martin 1974 . In the current consensus, fixational eye movement contributes to maintaining visibility, by continuously stimulating neurons in the early visual areas of the brain , which mostly respond to wikt transience transient stimulus physiology stimuli . In the absence of retinal jitter a laboratory condition called retinal stabilization , stabilized images as a visual percept rapidly fade out and completely disappear provided the stabilization is good enough Pritchard, Heron & Hebb, 1960 Coppola & Purves, 1996 . Fixation is also used in experiments in vision science or neuroscience. Human subjects are often told to fixate ... links MeshName Ocular Fixation See also Rapid eye movement Saccade Troxler s fading References ... &year &match all refend Category Eye Category Vision fr Fixation vision de Fixation Auge ... more details
The fixation reflex is that concerned with attracting the eye on a peripheral object. For example, when a light shines in the periphery, the eyes shift gaze on it. It is controlled by the occipital lobe of the cerebral cortex, corroborated by three main tests Removal of cortex causes shutdown of this reflex Drawing a figure on the cortex surface will cause eye movements in the very direction traveled Detecting an image by recording the actual signals from the eyes Older research declares that a motor pathway from the occipital cortex to the brainstem motor neurons was via the superior colliculi. This is the case in lower animals, but in humans, the theory that eye muscle nuclei aside from the superior colliculi of the midbrain is now generally held. When an object is focused directly at an object but the eyes drift off their target, the fixation reflex keeps the eyes focused on the original object, albeit moving itself See also Physiologic nystagmus Nystagmus Saccade Bibliography eye, human. Encyclop dia Britannica. 2008. Encyclop dia Britannica 2006 Ultimate Reference Suite DVD Category Eye ... more details
Fisher s reproductive value was defined by Ronald Fisher R. A. Fisher in his 1930 book The Genetical Theory of Natural Selection what page? I ll have a look as the expected value expected reproduction of an individual from their current age onward, conditional probability given that they have survived to their current age. It is used in describing populations with age structure. Definition Consider a species with a life table life history table with survival and reproductive parameters given by math ell x math and math m x math , where math ell x math probability of surviving from age 0 to age math x math and math m x math average number of offspring produced by an individual of age math x. math Depending on whether the breeding is discrete or continuous, Fisher s reproductive value is calculated as math v x mbox either frac sum y x infty ell y m y R mbox or frac int y x infty ell y m y ,dy R math where math R mbox either sum y 0 infty ell y m y mbox or int 0 infty ell x m x ,dx, math the net reproductive rate of the population. The average age of a reproducing adult is the generation time and is math T mbox either sum y 0 infty ell y v y mbox or int 0 infty ell x v x ,dx. math See also Effective population size Senescence References Fisher, R. A. 1930 The genetical theory of natural selection . Oxford University Press, Oxford. Category Population genetics de Reproduktionswert ... more details
Use dmy dates date January 2012 Use Australian English date January 2012 Unsourced date December 2011 Infobox broadcasting network name Animation Fixation logo type Weeknight Animation Block 2007 2009 br Wednesday Night Animation block 2009 present branding established test card test of transmission airdate country Australia available Australia founded founder slogan motto market share license area headquarters broadcast area area erp owner Foxtel 2007 2009 br Ten Network Holdings 2009 present parent key people foundation launch date 2007 dissolved former names digital analog servicename1 service1 servicename2 service2 servicename3 service3 servicename4 service4 callsigns callsign meaning former callsigns affiliation Eleven TV channel Eleven 2011 present affiliates groups former affiliations Fox8 2007 2009 br Network Ten 2009 2011 website footnotes Animation Fixation is an animation block a selection of various animated programs aired as part of a single session featured on Australian television during the evening timeframe. In 2007, it aired on Fox8 and was broadcast every weeknight from 5.30 to 7.30 pm. It was moved to Network Ten on December 2, 2009, and occupied the new starting time of 7.30pm maintaining a two hour duration , but only on Wednesday evenings. Animation Fixation is currently a part of channel Eleven TV channel Eleven s programing, a transition that occurred on January 12, 2011, and has adopted the same time slot from its Tenure academic tenure with channel Ten. On channel Eleven it is preceded by The Late Late Show with Craig Ferguson . Programming Future shows Allen Gregory Current shows The Simpsons Futurama The Cleveland Show Bob s Burgers New episodes Former shows King of the Hill Family Guy only on Fox8 See also Animation Salvation Television Blocks in Australia Category Fox8 shows Category Network Ten Category Television programming blocks ... more details
by ethnic groups References reflist DEFAULTSORT PopulationGenetics Of The Sami Category Sami ... to have a complex population history, suggesting a mixture of peoples arriving in Fenno Scandia ... Genetics volume 74 pages 661 682 url http www.journals.uchicago.edu AJHG journal issues v74n4 40783 ... Ural region of Russia journal European Journal of Human Genetics volume 15 pages 115 120 url http ... Pool journal American Journal of Human Genetics volume 67 pages 1251 1276 url http www.stats.gla.ac.uk ... Link journal American Journal of Human Genetics volume 76 pages 883 886 pmc 1199377 pmid 15791543 ... in Europe journal American Journal of Human Genetics volume 69 year 2001 pages 884 885 pmid 11517423 ... and 16298 that are frequent in the Sami population are much more widespread in eastern than in western ... contribution of people from the Volga Ural region to the Sami population. ref name Ingman2007 Y ... diversity in Sweden A long time perspective journal European Journal of Human Genetics volume 14 ... more details
Infobox album See Wikipedia WikiProject Albums Name God Fixation Type Album Artist Petra band Petra Cover Petragodfixation.jpg Released April 21, 1998 Genre Christian rock Length 43 02 Label Word Records Word , Epic Records Epic Producer John Elefante John & Dino Elefante Reviews Allmusic Rating 3 5 Allmusic class album id r348197 pure url yes link HM Magazine http web.archive.org web 20010713013634 www.hmmagazine.com issue72 72Albums.htm link Last album Petra Praise 2 We Need Jesus br 1997 This album God Fixation br 1998 Next album Double Take Petra album Double Take br 2000 God Fixation is the eighteenth release of the Christian rock band, Petra band Petra . It was released on April 21, 1998. The album features 3 new members guitarist Pete Orta guitarist keyboardist Kevin Brandow and bassist Lonnie Chapin . All new members worked on the music and lyrics of the new songs contributing heavily to the sound of this album, which is more modern and less driving than most of their previous work. Album background God Fixation came to be after another major lineup change within the band. After the departure of guitarist David Lichens and keyboardist Jim Cooper musician Jim Cooper , lead singer John Schlitt recruited guitarists Pete Orta and Kevin Brandow , who had been playing with him on his solo tour. They joined new bassist Lonnie Chapin in the recording of the album. According to Schlitt, the three new members worked closely with band founder Bob Hartman in the writing and recording ... small Words by Chelsea Brandow, Music by Orta and Elefante small 4 37 God Fixation small Music ... by K.Brandow, Wooten and Elefante small 4 29 Awards God Fixation was nominated for a Grammy for Grammy ... www.allmusic.com album god fixation r348197 Petra God Fixation on AllMusic ref , while Victor Sambu ... . ref http www.jesusfreakhideout.com cdreviews PetraGodFixation.asp Petra God Fixation Review on Jesus ... reflist Petra band Category 1998 albums Category Petra albums pt God Fixation ... more details
inline citations date April 2012 In computer network security, session fixation attacks attempt to exploit computer security exploit the vulnerability of a system which allows one person to fixate set another person s session computer science session identifier SID . Most session fixation attacks are web based, and most rely on session identifiers being accepted from Uniform Resource Locator URLs query string or POST data. Attack scenarios Alice and Bob Alice has an account at the bank code nowiki http unsafe nowiki code . Unfortunately, Alice is not very security savvy. Alice and Bob Mallory is out to get Alice s money from the bank. Alice has a reasonable level of trust in Mallory, and will visit links Mallory sends her. A simple attack scenario Straightforward scenario Mallory has determined ... accept server generated session identifiers are safe from fixation. This is false . Scenario Mallory ... nowiki code . Attacks using cross site cooking Another session fixation attack, cross site ... date July 2011 Regenerate SID on each request A countermeasure against session fixation is to generate ... fixation attempt. Unfortunately session regeneration is not always possible. Problems are known to occur ... not prevent all session fixation attacks. syntaxhighlight lang php if isset SESSION SERVER GENERATED ... harder to perform session fixation and other attacks. As more and more networks begin to conform ... Session poisoning Cross calation External links http shiflett.org articles session fixation Security Corner Session Fixation http www.acros.si papers session fixation.pdf Session Fixation Vulnerability in Web based Applications PDF http revver.com video 470597 what is session fixation Session Fixation Video example http projects.webappsec.org Session Fixation 20Session 20Fixation 20Vulnerabilities ... Session Fixation Category Web security exploits Category Article Feedback 5 de Session Fixation fr Fixation de session ... more details
, carbon fixation is the Redox reduction of carbon dioxide to organic compound s by living organism s. The obvious example is photosynthesis . Carbon fixation requires an electron donor such as water ... carbon. Photosynthesis Photosynthesis uses energy from sunlight to drive an autotrophic carbon fixation ... sup sup 2e sup sup 2H sup sup eqm NADPH H sup sup The second step, the actual fixation of carbon dioxide ... Benson Bassham cycle, or simply the Calvin cycle, was the first autotrophic carbon fixation pathway ... cycle in plants accounts for the preponderance of carbon fixation on land. In algae and cyanobacteria , it accounts for the preponderance of carbon fixation in the oceans. The Calvin cycle reduces ... to 10 . ref name O Leary88 C sub 4 sub plants C4 carbon fixation C sub 4 sub plants preface the Calvin ... 4 sub . Overall, 7600 species of terrestrial plants use C sub 4 sub carbon fixation, representing ... name O Leary88 C sub 3 sub plants The large majority of plants are C3 carbon fixation C sub 3 sub ... imply autotrophic carbon fixation. In recent decades, a great many phototrophic bacteria and archaea, which lack autotrophic carbon fixation pathways, have been discovered. They are obligate ly heterotrophic ... rock s. Other autotrophic pathways Six autotrophic carbon fixation pathways are known as of 2011. The Calvin ... 2002 title A bicyclic autotrophic CO2 fixation pathway in Chloroflexus aurantiacus journal J. Biol ... steps of the autotrophic 3 hydroxypropionate CO2 fixation cycle in Chloroflexus aurantiacus ... of Heterotrophic Carbon Dioxide Fixation by Harland G. Wood journal The Journal of Biological ... carbon fixation is of interest, according to Graham Cairns Smith , in the study of the origins of life ... del carboni de Kohlenstoffdioxid Assimilation fr Fixation du carbone it Fase di fissazione del carbonio ja pl Asymilacja w gla pt Fixa o do carbono ru simple Carbon fixation ... more details
Oral fixation may refer to In psychology Oral stage , a term used by Sigmund Freud to describe the child s development during the first 0 to 18 months of life, in which an infant s pleasure centers are in the mouth. In music Oral Fixation , an album by Lydia Lunch . Fijaci n Oral Vol. 1 Oral Fixation Vol. 1 , Shakira s fourth studio album. Oral Fixation Vol. 2 , Shakira s fifth studio album. Disambig ... more details
Diagnostic infobox Name PAGENAME Image Caption ICD10 ICD9 MeshID D007841 OPS301 OtherCodes A latex fixation test or latex agglutination test is an Agglutination biology agglutination technique used to detect antibodies, such as those produced in response to the rubella virus or the rheumatoid factor . May be used for Rickettsia, coccidioidomycosis, though numerous sources of interferences e.g., large immune complexes and high protein concentrations lessen the utility of the latex agglutination LA test in most situations. There is an excellent LA test for cryptococcus. ref Howanitz and Howanitz, Laboratory Medicine. Published by Church Livingston 1991 pp 825 828 ref It also is used in definitive diagnosis of Group A streptococcus . In a latex fixation test, a sample is mixed with latex beads coated with antibodies. If the antigen is present, it will react with the antibodies causing the latex beads to clump. http www.umm.edu ency article 003334.htm See also Visceral leishmaniasis Diagnosis External links MeshName Latex fixation test cite journal author Singer JM, Edberg SC, Selinger M, Amram M title Quality control of the latex fixation test journal Am. J. Clin. Pathol. volume 72 issue 4 pages 591 6 year 1979 pmid 495562 doi Immunologic techniques and tests References Reflist Category Blood tests Category Immunologic tests Category Medical tests immunology stub pl Odczyn lateksowy ... more details
DISPLAYTITLE C sub 3 sub carbon fixation Image Calvin cycle4.svg thumb right 450px Calvin Benson cycle c3 carbon fixation is a metabolic pathway for carbon fixation in photosynthesis . This process converts carbon dioxide and ribulose bisphosphate RuBP, a 5 carbon sugar into 3 phosphoglycerate through the following reaction CO sub 2 sub RuBP 2 3 phosphoglycerate This reaction occurs in all plants as the first step of the Calvin Benson cycle . In C4 carbon fixation c4 plants, carbon dioxide is drawn out of malate and into this reaction rather than directly from the air . Plant s that survive solely on c3 fixation c3 plants tend to thrive in areas where sunlight intensity is moderate, temperature s are moderate, carbon dioxide concentrations are around 200 parts per million ppm or higher, ref C.Michael Hogan. 2011. http www.eoearth.org article Respiration?topic 74360 Respiration . Encyclopedia of Earth. Eds. Mark McGinley and C.J.Cleveland. National Council for Science and the Environment. Washington DC ref and ground water is plentiful. The c3 plants, originating during Mesozoic and Paleozoic eras, predate the C4 carbon fixation c4 plants and still represent approximately 95 of Earth s plant biomass. C3 plants lose 97 of the water taken up through their roots to transpiration. ref name Raven2001 cite journal author Raven, J.A. coauthors Edwards, D. year 2001 title Roots evolutionary origins and biogeochemical significance journal Journal of Experimental Botany volume 52 issue 90001 pages 381 401 pmid 11326045 doi 10.1093 jexbot 52.suppl 1.381 ref Examples include rice and barley. C3 plants cannot grow in hot areas because RuBisCO incorporates more oxygen into RuBP as temperatures increase. This leads to photorespiration , which leads to a net loss of carbon and nitrogen from the plant and can, therefore, limit growth. In dry areas, c3 plants shut their stomata to reduce ... shows higher degree of sup 13 sup C depletion than the c4 plants. See also C4 carbon fixation CAM ... more details
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