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Invagination
Invagination means to fold inward or to sheath. In biology, this can refer to a number of processes.* Invagination is the morphogenetic processes by which an embryo takes form, and is the initial step of gastrulation, the massive reorganization of the embryo from a simple spherical ball of cells, the blastula, into a multi-layered organism, with differentiated germ layers: endoderm,

Invalid
Invalid may refer to:* Patient, a sick person* A person with a disability* .invalid, a top-level Internet domain not intended for real useAs the opposite of valid:* Validity, in logic, true premises cannot lead to a false conclusion

Invariance
Invariance is a French magazine edited by Jacques Camatte, published since 1968.It emerged from the Italian left-communist tradition associated with Amadeo Bordiga and it originally bore the subtitle "Invariance of the theory of the proletariat", indicating Bordiga's notion of the unchanging nature of communist theory

Invariant
Invariant and invariance may have several meanings, among which are:- Computer science :* Invariant , an Expression whose value doesn't change during program execution* A type in overriding that is neither covariant nor contravariant

Invasion
An invasion is a military offensive consisting of all, or large parts of the armed forces of one geopolitical entity aggressively entering territory controlled by another such entity, generally with the objective of either conquering, liberating or re-establishing control or authority over a territory, forcing the partition of a country, altering the established government or gaining

Invasion (comics)
Invasion, in the world of comics, may refer to:* Invasion! , a major storyline in the DC Universe* Invasion! , a long series in 2000 AD

Invasion (song)
"Invasion" is the first single from the band Eisley's 2007 album, Combinations.- Inspiration :During the band's Final Noise Tour in 2006 Sherri DuPree would ask the crowd if they had read or watched Invasion of the Body Snatchers, and then the band would play this song

Invasion stripes
Invasion stripes were alternating black and white bands painted on the fuselages and wings of World War II Allied aircraft, for the purpose of increased recognition by friendly forces during and after the Normandy Landings

Invasive
Invasive may refer to:*A military invasion*An invasive species*An invasive medical procedure*The invasively progressive spread of disease from one organ in the body to another, especially in reference to cancer

Invention
An invention is a novel composition, device, or process. An invention may be derived from a pre-existing model or idea, or it could be independently conceived, in which case it may be a radical breakthrough. In addition, there is cultural invention, which is an innovative set of useful social behaviors adopted by people and passed on to others

Invention (album)
Invention is an album by Phil Keaggy, Wes King, and Out of the Grey's Scott Denté, released on 7 October 1997. The album is composed mostly of guitar-based instrumental tracks.-Track listing:#"Watch My Back" – 4:51#"Isle of Skye" – 4:24

Invention (disambiguation)
Invention may refer to:*Invention, a form, a composition of matter, or a process that has an element of novelty*Invention , a short composition with two-part counterpoint

Inventor (disambiguation)
An inventor is a person who creates or discovers new methods, means, or devices for performing a task.Inventor may also refer to:*American Inventor, an American television show*Autodesk Inventor, the 3D solid modeling software

Inventory
Inventory means a list compiled for some formal purpose, such as the details of an estate going to probate, or the contents of a house let furnished. This remains the prime meaning in British English

Inventory (museum)
An inventory is an itemized list of objects that the museum has accessioned or received via loan and must be physically located by an examiner. A complete, one-hundred percent inventory, or a random inventory of the collection must be carried out periodically to ensure the museum is operating under best practices and for security purposes

Inventura
Inventura is a compilation album, showing public the timeline of Chaozz' work - from "...a nastal chaos" to "Sakum prdum".-Track listing:#"Ruzno" #"Marie a Jana"#"Svisti na golfovym hristi"#"Prvni zima"

Inver
Inver is a village in County Donegal, Ireland. It lies on the N56 National secondary road mid-way between Killybegs to the west and Donegal Town to the east. Inver has an excellent football pitch and a club called Eany Celtic

Inverness (HM Prison)
HM Prison Inverness, also known as Porterfield Prison, is located in the Crown area of Inverness, Scotland, and serves the courts of the Highlands and Islands. It covers all the courts in the Western Isles as well as courts from Fort William, Wick and Elgin

Inverness (UK Parliament constituency)
Inverness was a county constituency of the House of Commons of the Parliament of the United Kingdom from 1918 until 1983. It elected one Member of Parliament by the first-past-the-post system of election.

Inverness-shire
The County of Inverness or Inverness-shire was a general purpose county of Scotland, with the burgh of Inverness as the county town, until 1975, when, under the Local Government Act 1973, the county area was divided between the two-tier Highland region and the unitary Western Isles. The Highland region was a region of eight districts of which one was named Inverness

Inverse
Inverse may refer to:* Inverse , a type of immediate inference from a conditional sentence* Inverse , a program for solving inverse and optimization problems

Inverse (program)
Inverse is a general purpose computer program for solving inverse and optimization problems.The program has been designed in particular for solving problems where complex numerical simulations Inverse is a general purpose computer program for solving inverse and optimization problems.The program has been designed in particular for solving problems where complex numerical simulations Inverse is a general purpose computer program for solving inverse and optimization problems.The program has been designed in particular for solving problems where complex numerical simulations (e.g

Inversion (geology)
In structural geology inversion or basin inversion relates to the relative uplift of a sedimentary basin or similar structure as a result of crustal shortening. This normally excludes uplift developed in the footwalls of later extensional faults, or uplift caused by mantle plumes

Inversion (kinesiology)
Inversion is the movement of the sole towards the median plane .Tibialis anterior and tibialis posterior invert. Some sources also state that the triceps surae and extensor hallucis longus invert.

Inversion (linguistics)
In linguistics, grammatical inversion is any of a number of different distinct grammatical constructions in the languages of the world. There are three main uses in the literature which, unfortunately, have little if any overlap either formally or typologically: syntactic inversion, thematic inversion, and feature inversion.-Syntactic inversion:The first and most

Inversion (music)
In music theory, the word inversion has several meanings. There are inverted chords, inverted melodies, inverted intervals, and inverted voices

Invertase
Invertase is an enzyme that catalyzes the hydrolysis of sucrose . The resulting mixture of fructose and glucose is called inverted sugar syrup. Related to invertases are sucrases. Invertases and sucrases hydrolyze sucrose to give the same mixture of glucose and fructose

Inverter
Inverter may refer to* Inverter , a device that converts direct current to alternating current** Inverter , an air conditioner that can continuously regulate its output by altering the compressor speed in response to cooling demand** Uninterruptible power supply, which often are based on an electrical inverter* Inverter , a logic gate also

Inverter (air conditioning)
The inverter tag found on some air conditioners signifies the ability of the unit to continuously regulate its thermal transfer flow by altering the speed of the compressor in response to cooling demand.

Investigate (New Zealand)
Investigate is a current affairs magazine published in New Zealand. It has a conservative Christian editorial standpoint and has published a number of controversial articles. Many of the more notable articles have been critical of policies and members of the centre-left Fifth Labour Government of New Zealand which governed from December 1999 until November 2008

Investigation
Investigation may refer to:In law enforcement:* The work of a Private investigator* The work of a Detective*Federal Bureau of Investigation, the primary investigative arm of the US Department of Justice

Investigation (film)
Investigation is a 2006 Bulgarian film directed by Iglika Triffonova.- Plot outline :Parts of a corpse have been found and a suspect, Plamen Goranov , brother of the murdered man, is detained. He denies any charges and for want of conclusive evidence, the investigation is about to be suspended

Investigator
Investigator may refer to:*Clinical investigator, an investigator involved in a clinical trial*Detective, a person who investigates crimes, can be a rank and job in a police department, state or federal employee, or a civilian called a private detective

Investiture
Investiture, from the Latin is a rather general term for the formal installation of an incumbent

Investment
Investment has different meanings in finance and economics. Finance investment is putting money into something with the expectation of gain, that upon thorough analysis, has a high degree of security for the principal amount, as well as security of return, within an expected period of time

Investment (military)
Investment is the military tactic of surrounding an enemy fort with armed forces to prevent entry or escape.A circumvallation is a line of fortifications, built by the attackers around the besieged fortification facing towards the enemy fort

Investor
An investor is a party that makes an investment into one or more categories of assets --- equity, debt securities, real estate, currency, commodity, derivatives such as put and call options, etc

Invidia
In Latin, invidia is the sense of envy or jealousy, a "looking upon" associated with the evil eye, from invidere, "to look against, to look at in a hostile manner." Invidia is one of the Seven Deadly Sins in Christian belief.

Invincible
-Film, television, and video games:* Invincible , a film by Werner Herzog* Invincible , a TV movie starring Billy Zane* Invincible , a film starring Mark Wahlberg* "Invincible", an episode of Eureka

Invincible (Muse song)
"Invincible" is a song by English rock band Muse and is the sixth track on their fourth album Black Holes & Revelations. The song was also released as the fourth single from that album in the United Kingdom on 9 April 2007

Invincible (OK Go song)
"Invincible" is the fourth single by the Chicago based rock band OK Go from their Do What You Want EP and their 2005 album Oh No. It was released as a single in 2006 for US radio stations only.-Music video:

Invincible (Ship)
The French Navy's Invincible was a sister ship to the Gloire, the world's first ocean-going ironclad battleship. It was launched on 4 April 1861. The Gloire class were designed by the French naval architect Dupuy de Lôme

Invincible (Star Wars novel)
Invincible is the ninth and final book in the Legacy of the Force series. It is a novel by Troy Denning and was released on May 13, 2008.-Story:

Invincible (TV movie)
Invincible is a 2001 fantasy / martial arts film starring Billy Zane.-Synopsis:The Shadow Men are immortal beings of darkness and destruction. One such Shadow Man, Os , is confronted by the White Warrior, a being of light, and given the chance to change his ways or die

Invisibility
Invisibility is the state of an object that cannot be seen. An object in this state is said to be invisible . The term is usually used as a fantasy/science fiction term, where objects are literally made unseeable by magical or technological means; however, its effects can also be seen in the real world, particularly in physics and perceptional

Invisible (album)
Invisible is La Ley's fourth album. It is often considered their best record, and is their second best selling album. The album reunites La Ley again with Rodrigo Aboitiz and invites a new member, Pedro Furgone, after the death of founder Andres Bobe. The album begins the dark era of La Ley

Invisible (Alison Moyet song)
"Invisible" is a song recorded by Alison Moyet in 1984, written by Lamont Dozier , from her album Alf.

Invisible (Nightingale album)
Invisible is the fifth full-length studio album by the Swedish progressive/AOR metal/rock band Nightingale. The track "Still Alive" is the end of the Breathing Shadow story

Invisible (Tilt song)
"Invisible" is a song by English electronic music group Tilt, which reached the UK top 20 charts when released in 1999. The song was co-written by Dominique Atkins, from Grace fame, who also provided the vocals.-Track listings and formats:CD 1

Invisible Rail
The Invisible Rail is a flightless species of bird in the family Rallidae , endemic only to Halmahera, north Maluku, Indonesia, especially its swamp forests, wetlands, and forest edges. The Invisible Rail is evaluated as Vulnerable on the IUCN Red List of Threatened Species

Invitation
Invitation is the first full-length studio album from the Finnish power metal band Altaria.-Track listing:# "Unicorn" – 3:32# "History of Times to Come" – 4:16# "Ravenwing" – 4:30# "Innocent" – 4:11# "Wrath of a Warchild" – 4:13

Invitation
Invitation may refer to:*Invitation , 1952 MGM film starring Dorothy McGuire and Van Johnson**"Invitation", theme music for above film by Bronislau Kaper which has become a jazz standard*Invitation , 1993

Invitee
In the law of torts, an invitee is a person who is invited to land by the possessor of the land as a member of the public or one who is invited to the land for the purpose of business dealings with the possessor of the land

Invocation
An invocation may take the form of:*Supplication or prayer.*A form of possession.*Command or conjuration.*Self-identification with certain spirits.

Invocation (Sympathy album)
Invocation is the 2002 debut album by the Canadian technical death metal band Sympathy. The album was published by Fear Dark, a Dutch record label.

Invoice
An invoice or bill is a commercial document issued by a seller to the buyer, indicating the products, quantities, and agreed prices for products or services the seller has provided the buyer. An invoice indicates the buyer must pay the seller, according to the payment terms

Involuntary
Involuntary is the antonym of voluntary. An involuntary action is one that occurs without volition or will; see volition and will . Involuntary may also refer to:*Involuntary , a 2008 Swedish film by Ruben Östlund

Involute
In the differential geometry of curves, an involute is a curve obtained from another given curve by attaching an imaginary taut string to the given curve and tracing its free end as it is wound onto that given curve; or in reverse, unwound. It is a roulette wherein the rolling curve is a straight line containing the generating point

Involution
In mathematics, an involution, or an involutary function, is a function f that is its own inverse:-General properties:Any involution is a bijection.The identity map is a trivial example of an involution

Involution
Involution occurs when something turns in upon itself. It may refer to:* Involute, a construction in the differential geometry of curves* Involution , intensification of production through increased labour inputs

Involution (disambiguation)
Involution occurs when something turns in upon itself. It may refer to:* Involute, a construction in the differential geometry of curves* Involution , intensification of production through increased labour inputs

Involution (medicine)
-Thymus:The thymus continues to grow between birth and puberty and then begins to atrophy, a process directed by the high levels of circulating sex hormones. Proportional to thymic size, thymic activity is most active before puberty. Upon atrophy, the size and activity are dramatically reduced, and the organ is primarily replaced with fat

Involution (Meher Baba)
For Indian spiritual master Meher Baba, involution is the inner path of the human soul to the Self. Charles Haynes, in describing Meher Baba's sense of involution writes, "The old and new impressions, both of which create a veil over consciousness, gradually wear away, revealing an increasingly clearer experience of God; that is, the soul wearies of the world and is ready to begin the

Involve
- Organisations :* Involve , The Involve Foundation, a UK based organisation that focuses on public participation* INVOLVE , a UK national advisory Group that promotes public involvement in health and social care research

Involve (think tank)
The Involve Foundation is a leading UK based charity focused on public participation.-Background:Involve is based in Central London with Simon Burall as Director and is governed by a board chaired by Ian Christie and including Geoff Mulgan amongst the trustees.Involve was founded in 2004 by Richard Wilson to determine how new forms of public participation can

INVOLVE (UK National Advisory group)
INVOLVE is a national advisory Group, funded by the Department of Health, that promotes public involvement in health and social care research. Established in 1996, it was originally called "Consumers in NHS Research". It expanded to cover public health and social care research in 2001, and changed its name to INVOLVE in July 2003

IO
Io, IO, I/O, i/o, or i.o. may refer to:-An abbreviation:* I.O., a theater in Chicago, Illinois dedicated to improvisational comedy* i.o., "in illo ordine", Latin phrase meaning "respectively"

IO (band)
IO is a German alternative rock band, formed in 2006 after the breakup of Guano Apes. Original Guano Apes members Henning Rümenapp , Stefan Ude and Dennis Poschwatta reunited after having spent time on individual projects - of which Poschwatta's band Tamoto was the only real band, as well as the most successful

Pentose phosphate pathway
The pentose phosphate pathway is a process that generates NADPH and pentoses . There are two distinct phases in the pathway. The first is the oxidative phase, in which NADPH is generated, and the second is the non-oxidative synthesis of 5-carbon sugars

Pentrebach
Pentrebach is a village in the County Borough of Merthyr Tydfil, Wales. It lies on the east side of the River Taff opposite Abercanaid, South of Merthyr and North of Troedyrhiw. To the east of the village lies the Mynydd Cilfach-yr-Encil which rises up to 445 m

Peony
Peony or paeony is a name for plants in the genus Paeonia, the only genus in the flowering plant family Paeoniaceae. They are native to Asia, southern Europe and western North America

People
People is a plurality of human beings or other beings possessing enough qualities constituting personhood. It has two usages:* as the plural of person or a group of people People is a plurality of human beings or other beings possessing enough qualities constituting personhood. It has two usages:* as the plural of person (in addition to the rarer plural, "persons") or a group of people People is a plurality of human beings or other beings possessing enough qualities constituting personhood. It has two usages:* as the plural of person (in addition to the rarer plural, "persons") or a group of people (grammatically, a suppletive plural and collective noun; e.g

People (magazine)
In 1998, the magazine introduced a version targeted at teens called Teen People. However, on July 27, 2006, the company announced it would shut down publication of Teen People immediately. The last issue to be released was scheduled for September 2006. Subscribers to this magazine received Entertainment Weekly for the rest of their issues in exchange

People mover
A people mover or automated people mover is a fully automated, grade-separated mass transit system.The term is generally used only to describe systems serving relatively small areas such as airports, downtown districts or theme parks, but is sometimes applied to considerably more complex automated systems.The term was originally applied to two different systems,

People to People Student Ambassador Program
The People to People Student Ambassador Program is a travel service based in Spokane, Washington offering domestic and international travel opportunities to middle and high school students. The group was founded in 1956 and reincorporated in 1995. Since its founding, nearly half a million students, adults and athletes have participated in the ambassador programs

People's Republic of China
China , officially the People's Republic of China , is the most populous country in the world, with over 1.3 billion citizens. Located in East Asia, the country covers approximately 9.6 million square kilometres

Peoples Students Federation
Peoples Students Federation is a student federation and the student wing of the Pakistan Peoples Party founded by Shaheed Qamar Abbas in Khyber-Pakhtunkhwa.

PeopleSoft
PeopleSoft, Inc. was a company that provided Human Resource Management Systems , Financial Management Solutions , Supply Chain and customer relationship management software, as well as software solutions for manufacturing, enterprise performance management, and student administration to large corporations, governments, and organizations

Pepi I Meryre
Pepi I Meryre was the third king of the Sixth dynasty of Egypt. His first throne name was Neferdjahor which the king later altered to Meryre meaning "beloved of Rê."-Family:

Pepi II Neferkare
Pepi II was a pharaoh of the Sixth dynasty in Egypt's Old Kingdom. His throne name, Neferkare , means "Beautiful is the Ka of Re". He succeeded to the throne at age six, after the death of Merenre I, and is generally credited with having the longest reign of any monarch in history at 94 years Pepi II (reigned c. 2278 BC – c. 2184 BC) (2284 BC - 2184 BC) was a pharaoh of the Sixth dynasty in Egypt's Old Kingdom. His throne name, Neferkare (Nefer-ka-Re), means "Beautiful is the Ka of Re". He succeeded to the throne at age six, after the death of Merenre I, and is generally credited with having the longest reign of any monarch in history at 94 years Pepi II (reigned c. 2278 BC – c. 2184 BC) (2284 BC - 2184 BC) was a pharaoh of the Sixth dynasty in Egypt's Old Kingdom. His throne name, Neferkare (Nefer-ka-Re), means "Beautiful is the Ka of Re". He succeeded to the throne at age six, after the death of Merenre I, and is generally credited with having the longest reign of any monarch in history at 94 years (c

Peppa Pig
Peppa Pig is a British animated television series created directed and produced by Astley Baker Davies and distributed by eOne Entertainment. To date, three series have been aired. It is shown in 180 territories.-Background:

Pepper spray
Pepper spray, also known as OC spray , OC gas, and capsicum spray, is a lachrymatory agent that is used in riot control, crowd control and personal self-defense, including defense against dogs and bears

Pepper-box
The pepper-box revolver or simply pepperbox is a multiple-barrel repeating firearm that has three or more barrels grouped around a central axis. It mostly appears in the form of a multi-shot handheld firearm

Peppermint Patty
Patricia "Peppermint Patty" Reichardt is a fictional character featured in Charles M. Schulz's comic strip Peanuts. A freckle-faced auburn/brunette, she is one of a small group in the strip who lives across town from Charlie Brown and his school friends

Pepsi
Pepsi is a carbonated soft drink that is produced and manufactured by PepsiCo

Pepsi Blue
- History :Pepsi Blue was launched in mid-2002 and discontinued in Canada and the United States in 2004, although it remains available in some other countries. Its berry flavor was the result of taste-testing over 100 flavors over a 9-month period

Pepsi Coliseum
Pepsi Coliseum is an 8,200-seat multi-purpose arena, in Indianapolis, Indiana. It was formerly known as the Indiana State Fair Coliseum. The current arena was built in 1939, replacing a previous coliseum that was built in 1907

PepsiCo
PepsiCo Inc. is an American multinational corporation headquartered in Purchase, New York, United States, with interests in the manufacturing, marketing and distribution of grain-based snack foods, beverages, and other products. PepsiCo was formed in 1965 with the merger of the Pepsi-Cola Company and Frito-Lay, Inc

Peptide bond
This article is about the peptide link found within biological molecules, such as proteins. A similar article for synthetic molecules is being created

Peptide mass fingerprinting
Peptide mass fingerprinting is an analytical technique for protein identification that was developed in 1993 by several groups independently. In this method, the unknown protein of interest is first cleaved into smaller peptides, whose absolute masses can be accurately measured with a mass spectrometer such as MALDI-TOF or ESI-TOF

Peptidoglycan
Peptidoglycan, also known as murein, is a polymer consisting of sugars and amino acids that forms a mesh-like layer outside the plasma membrane of bacteria , forming the cell wall. The sugar component consists of alternating residues of β- linked N-acetylglucosamine and N-acetylmuramic acid

Percentile rank
The percentile rank of a score is the percentage of scores in its frequency distribution that are the same or lower than it. For example, a test score that is greater than 75% of the scores of people taking the test is said to be at the 75th percentile.

Perception
Perception is the process of attaining awareness or understanding of the environment by organizing and interpreting sensory information. All perception involves signals in the nervous system, which in turn result from physical stimulation of the sense organs

Perceval, the Story of the Grail
Perceval, the Story of the Grail is the unfinished fifth romance of Chrétien de Troyes. Probably written between 1181 and 1191, it is dedicated to Chrétien's patron Philip, Count of Flanders

Percheron
The Percheron is a breed of draft horse that originated in the Perche valley in northern France. Percherons are usually gray or black in color. They are well-muscled, and known for their intelligence and willingness to work. Although their exact origins are unknown, the ancestors of the breed were present in the valley by the 17th century

Percival
Percival or Perceval is one of King Arthur's legendary Knights of the Round Table. In Welsh literature his story is allotted to the historical Peredur

Percival Vega Gull
|-See also:-Bibliography:* Ellison, Norman H. Percivals Aircraft . Chalford, Stroud, UK: Chalford Publishing Company, 1997. ISBN 0-7524-0774-0.

Percocet
The combination oxycodone/paracetamol is a narcotic pain reliever used to treat moderate to severe acute pain, marketed by Endo Pharmaceuticals.-History:The U.S

Percolation
In physics, chemistry and materials science, percolation concerns the movement and filtering of fluids through porous materials

Percussion cap
The percussion cap, introduced around 1830, was the crucial invention that enabled muzzleloading firearms to fire reliably in any weather.Before this development, firearms used flintlock ignition systems which produced flint-on-steel sparks to ignite a pan of priming powder and thereby fire the gun's main powder charge The percussion cap, introduced around 1830, was the crucial invention that enabled muzzleloading firearms to fire reliably in any weather.Before this development, firearms used flintlock ignition systems which produced flint-on-steel sparks to ignite a pan of priming powder and thereby fire the gun's main powder charge The percussion cap, introduced around 1830, was the crucial invention that enabled muzzleloading firearms to fire reliably in any weather.Before this development, firearms used flintlock ignition systems which produced flint-on-steel sparks to ignite a pan of priming powder and thereby fire the gun's main powder charge (the flintlock mechanism replaced older ignition systems such as the

Percussion instrument
A percussion instrument is any object which produces a sound when hit with an implement or when it is shaken, rubbed, scraped, or otherwise acted upon in a way that sets the object into vibration

Percy Barnevik
Percy Nils Barnevik is a Swedish business executive, best known as CEO and later Chairman of Asea Brown Boveri 1988–2002, and for being the centre of a giant pension dispute that shook Sweden in 2003.-Background:

Percy Charles Pickard
Group Captain Percy Charles "Pick" Pickard DSO & Two Bars, DFC, was a British bomber pilot and commander during World War II. He is best remembered by the public for his role in the 1941 wartime propaganda film Target for Tonight in which he featured as the pilot of 'F for Freddie' – a Wellington bomber of No. 149 Squadron

Percy Edwards
Percy Edwards MBE , was an English animal impersonator, ornithologist, and entertainer.-Biography:

Percy Fawcett
Lt. Colonel Percival Harrison Fawcett was a British artillery officer, archaeologist and South American explorer.

Percy Julian
Percy Lavon Julian was an African American research chemist and a pioneer in the chemical synthesis of medicinal drugs from plants

Percy Priest Lake
J. Percy Priest Lake is a reservoir in north central Tennessee. It is formed by J. Percy Priest Dam, located between miles six and seven of the Stones River. The dam is located about 10 miles east of downtown Nashville and impounds a lake 42 miles long

Percy Shaw
Percy Shaw, OBE was an English inventor and businessman. He patented the reflective road stud or "cat's eye" in 1934, and set up a company to manufacture his invention in 1935.-Biography:

Peregrine Falcon
The Peregrine Falcon , also known as the Peregrine, and historically as the Duck Hawk in North America, is a widespread bird of prey in the family Falconidae. A large, crow-sized falcon, it has a blue-gray back, barred white underparts, and a black head and "moustache"

Perennial plant
A perennial plant or simply perennial is a plant that lives for more than two years. The term is often used to differentiate a plant from shorter lived annuals and biennials. The term is sometimes misused by commercial gardeners or horticulturalists to describe only herbaceous perennials

Perez v. Sharp
In 1948, in the case Perez v. Sharp, also known as Perez v. Lippold and Perez v. Moroney, the Supreme Court of California recognized that interracial bans on marriage violated the Fourteenth Amendment of the Federal Constitution.

Perfect competition
In economic theory, perfect competition describes markets such that no participants are large enough to have the market power to set the price of a homogeneous product. Because the conditions for perfect competition are strict, there are few if any perfectly competitive markets

Perfect Dark (P2P)
is a Japanese peer-to-peer file-sharing application designed for use with Microsoft Windows . It was launched in 2006, its author is known by the pseudonym . Perfect Dark was developed with the intention for it to be the successor to both Winny and Share

Perfect number
In number theory, a perfect number is a positive integer that is equal to the sum of its proper positive divisors, that is, the sum of its positive divisors excluding the number itself . Equivalently, a perfect number is a number that is half the sum of all of its positive divisors i.e

Perfect Strangers (TV series)
Perfect Strangers is an American sitcom that ran for eight seasons from March 25, 1986, to August 6, 1993, on the ABC television network. Created by Dale McRaven, the series chronicles the rocky coexistence of midwestern American Larry Appleton and his distant cousin from eastern Mediterranean Europe, Balki Bartokomous .Originally airing on

Perfetti Van Melle
Perfetti Van Melle is a privately held Italian global manufacturer of confectionery and gum. It was formed in 2001 with the acquisition of Van Melle of the Netherlands, by the Italian group Perfetti of Italy and having its corporate headquarters in Lainate , Italy.Perfetti Van Melle bills itself as the third largest confectionery manufacturer in the world after Kraft Foods

Perforation (oil well)
A perforation in the context of oil wells refers to a hole punched in the casing or liner of an oil well to connect it to the reservoir. In cased hole completions, the well will be drilled down past the section of the formation desired for production and will have casing or a liner run in separating the formation from the well bore

Perfume
Perfume is a mixture of fragrant essential oils and/or aroma compounds, fixatives, and solvents used to give the human body, animals, objects, and living spaces "a pleasant scent"

Perfusionist
A perfusionist, also known as a clinical perfusionist or a cardiovascular perfusionist, is a specialized health professional who operates the heart-lung machine during cardiac surgery and other surgeries that require cardiopulmonary bypass.

Pericardium
The pericardium is a double-walled sac that contains the heart and the roots of the great vessels.-Layers:

Perichoresis
Perichoresis is a term in Christian theology first found within the Church Fathers but now reinvigorated among contemporary figures such as C. Baxter Kruger, Jurgen Moltmann, Miroslav Volf and John Zizioulas, amongst others. The term first appears in Gregory of Nazianzus but was explored more fully in the work of John of Damascus

Pericles
Pericles was a prominent and influential statesman, orator, and general of Athens during the city's Golden Age—specifically, the time between the Persian and Peloponnesian wars

Peridot
-Chemistry:The chemical composition of peridot is 2SiO4, with Mg in greater quantities than Fe.-Etymology:The origin of the name "peridot" is uncertain

Peridotite
A peridotite is a dense, coarse-grained igneous rock, consisting mostly of the minerals olivine and pyroxene. Peridotite is ultramafic, as the rock contains less than 45% silica. It is high in magnesium, reflecting the high proportions of magnesium-rich olivine, with appreciable iron

Perindopril
Perindopril, or perindopril arginine, is a long-acting ACE inhibitor. Perindopril is used to treat high blood pressure, heart failure or stable coronary artery disease. It is also available in a generic form, perindopril erbumine

Perineum
In human anatomy, the perineum is a region of the body including the perineal body and surrounding structures

Period 5 element
A period 5 element is one of the chemical elements in the fifth row of the periodic table of the elements. The periodic table is laid out in rows to illustrate recurring trends in the chemical behaviour of the elements as their atomic number increases: a new row is begun when chemical behaviour begins to repeat, meaning that elements with similar behaviour fall

Period-after-opening symbol
The period-after-opening symbol or PAO symbol is a graphic symbol that identifies the useful lifetime of a cosmetics product after its package has been opened for the first time

Periodic points of complex quadratic mappings
This article describes periodic points of some complex quadratic maps. A map is a formula for computing a value of a variable based on its own previous value or values; a quadratic map is one that involves the previous value raised to the powers one and two; and a complex map is one in which the variable is a complex number

Periodic table
The periodic table of the chemical elements is a tabular display of the 118 known chemical elements organized by selected properties of their atomic structures. Elements are presented by increasing atomic number, the number of protons in an atom's atomic nucleus

Periodontal probe
A periodontal probe is an instrument in dentistry commonly used in the dental armamentarium. It is usually long, thin, and blunted at the end. The primary purpose of a periodontal probe is to measure pocket depths around a tooth in order to establish the state of health of the periodontium

Peripheral Component Interconnect
Conventional PCI is a computer bus for attaching hardware devices in a computer

Periscope
A periscope is an instrument for observation from a concealed position. In its simplest form it consists of a tube with mirrors at each end set parallel to each other at a 45-degree angle.

Peristalsis
Peristalsis is a radially symmetrical contraction and relaxation of muscles which propagates in a wave down the muscular tube, in an anterograde fashion. In humans, peristalsis is found in the contraction of smooth muscles to propel contents through the digestive tract. Earthworms use a similar mechanism to drive their locomotion

Peritonitis
Peritonitis is an inflammation of the peritoneum, the serous membrane that lines part of the abdominal cavity and viscera. Peritonitis may be localised or generalised, and may result from infection or from a non-infectious process.-Abdominal pain and tenderness:The main manifestations of

Periyar River
Periyar is the longest river in the state of Kerala, India, with a length of 244 km. The Periyar is known as the lifeline of Kerala; it is one of the few perennial rivers in the region and provides drinking water for several major towns

Perkin reaction
The Perkin reaction is an organic reaction developed by William Henry Perkin that can be used to make cinnamic acids i.e. α-β-unsaturated aromatic acid by the aldol condensation of aromatic aldehydes and acid anhydrides in the presence of an alkali salt of the acid.Several reviews have been written.

 
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