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p20

1. p20-ARC One of the subunits of ARP2/3. 2. p20-CGGBP (CGG-binding protein1) A protein that binds to the unmethylated form of the trinucleotide repeat ...

ginseng

ginseng   Quick reference

World Encyclopedia

Reference type:
Subject Reference
Current Version:
2004
Subject:
Encyclopedias
Length:
32 words

...Either of two perennial plants found in the USA ( Panax quinquefolius ) and e Asia ( P. ginseng ). It has yellow-green flowers and compound leaves. Height: to 51cm (20in). Family...

ethanal

ethanal   Quick reference

World Encyclopedia

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Subject Reference
Current Version:
2004
Subject:
Encyclopedias
Length:
40 words

... ( acetaldehyde ) Colourless volatile flammable liquid (CH 3 CHO) manufactured by catalytic oxidation of ethene or ethanol, or catalytic hydration of acetylene. It is used in the breathalyser test and to silver mirrors. Properties: r.d. 0.788; m.p. −123.5°C (−190.3°F); b.p. 20.8°C...

aniline

aniline   Quick reference

World Encyclopedia

Reference type:
Subject Reference
Current Version:
2004
Subject:
Encyclopedias
Length:
42 words

... ( phenylamine ) Highly poisonous, colourless oily liquid (C 6 H 5 NH 2 ) made by the reduction of nitrobenzene. It is an important starting material for making organic compounds such as drugs, explosives, and dyes. Properties: r.d. 1.02; −m.p. 6.2°C (20.8°F); b.p. 184.1°C (363.4°F). See also ...

neon

neon   Quick reference

World Encyclopedia

Reference type:
Subject Reference
Current Version:
2004
Subject:
Encyclopedias
Length:
89 words

...English chemist Morris Travers ( 1872–1961 ), its main use is in discharge tubes for advertising signs (emitting a red glow) and in gas lasers, geiger counters, and particle detectors. It forms no compounds. Properties: at.no. 10; r.a.m. 20.179; m.p. −248.67°C (−415.6°F); b.p. −246.05°C (−410.89°F); most common isotope Ne 20 ...

manganese

manganese   Quick reference

World Encyclopedia

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Subject Reference
Current Version:
2004
Subject:
Encyclopedias
Length:
69 words

...1774 by Swedish chemist Johan Gottlieb Gahn ( 1745–1818 ). Its chief ores are pyrolusite, manganite and hausmannite. The metal is used in alloy steels, ferromagnetic alloys, fertilizers, paints and as a petrol additive. Properties: at.no. 25; r.a.m. 54.938; r.d. 7.20; m.p. 1,244°C (2,271°F); b.p. 1,962°C (3,564°F); most common isotope Mn 55 (100%). See also transition...

neptunium

neptunium   Quick reference

World Encyclopedia

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Subject Reference
Current Version:
2004
Subject:
Encyclopedias
Length:
70 words

...series . Discovered in 1940 by US physicists Edwin McMillan and Philip Abelson ( 1913–2004 ), this silvery element is found in small amounts in uranium ores, and is obtained as a by-product in nuclear reactors. Properties: at.no. 93; r.a.m. 237.0482; r.d. 20.25; m.p. 640°C (1,184°F); b.p. 3,902°C (7,056°F); most stable isotope Np 237 (half-life 2.2 million...

xenon

xenon   Quick reference

World Encyclopedia

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Current Version:
2004
Subject:
Encyclopedias
Length:
96 words

... and English chemist Morris Travers ( 1872–1961 ). Xenon is present in the Earth's atmosphere (about one part in 20 million) and is obtained by fractionation of liquid air. Colourless and odourless, it is used in light bulbs, lasers and arc lamps for cinema projection. The element, which has nine stable isotopes, forms some compounds, mostly with fluorine . Properties: at.no. 54; r.a.m. 131.30; r.d. 5.88; m.p. −111.9°C (−169.42°F); b.p. −107.1°C (−160.8°F); most common isotope Xe 132 ...

degree

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World Encyclopedia

Reference type:
Subject Reference
Current Version:
2004
Subject:
Encyclopedias
Length:
70 words

...In mathematics, unit of angular measure equal to 1/360 of a complete revolution. One degree is written 1°, and can be divided into 60 parts called minutes (e.g. 20, which may in turn be divided into 60 parts called seconds (e.g. 25). Three-hundred-and-sixty degrees are equal to 2p radians. In physics and engineering, a degree is one unit on any of various scales, such as the Celsius temperature...

radon

radon   Quick reference

World Encyclopedia

Reference type:
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Current Version:
2004
Subject:
Encyclopedias
Length:
81 words

...a noble gas which is the densest gas known. It was first discovered ( 1899 ) by New Zealand-born British physicist Ernest Rutherford . The 20 known isotopes, which are alpha particle emitters, are present in the Earth's atmosphere in trace amounts. Radon is mainly used in medical radiotherapy . Chemically, it is mostly inert but does form fluoride compounds. Properties: at.no. 86; r.d. 9.73; m.p. −71°C (−95.8°F); b.p. −61.8°C (−79.24 °F); most stable isotope Rn 222 (half-life 3.8...

calcium

calcium   Quick reference

World Encyclopedia

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Current Version:
2004
Subject:
Encyclopedias
Length:
101 words

...is essential for strong bones and teeth. The metal, which is soft and malleable, has few commercial applications but its compounds are widely used. It is a reactive element, combining readily with oxygen, nitrogen and other non-metals. Properties: at.no. 20; r.a.m. 40.08; r.d. 1.55; m.p. 839°C (1542°F); b.p. 1484°C (2703°F); most common isotope Ca 40 (96.95%). See also hardness of...

Indonesia

Indonesia   Quick reference

A Guide to Countries of the World (4 ed.)

Reference type:
Subject Reference
Current Version:
2016
Subject:
Encyclopedias, Geographical reference, Social sciences, Regional and Area Studies
Length:
2,031 words
Illustration(s):
2

...Indonesia did not suffer too much in the global recession. One of his most notable achievements was to end a twenty-nine-year rebellion in Aceh by offering autonomy. The economy benefited from global growth, but he did not tackle structural economic problems, particularly the 20 per cent of government expenditure that went on fuel subsidies. He did, however, begin to attack government corruption and at the end of his first four years, he was a popular leader, and was resoundingly re-elected in 2009 . In his second term in office, his administration...

Sweden

Sweden: c. 1450 - 1986  

Reference type:
Timeline
Current Version:
2012

...The The Oxford Dictionary of Plays 1 1900s 20th century Performing arts Theatre Literature Drama Europe 1926 1926 To explain the irregular movement of stars, Swedish astronomer Bertil Lindblad proposes the theory that our galaxy rotates Lindblad, Bertil (1895–1965) A Dictionary of Scientists 1 1920s 20th century Science Astronomy and space Europe 1934 1934 Swedish tenor Jussi Björling makes his debut in Stockholm, in Puccini's Manon Lescaut Björling, Jussi (5 Feb. 1911) The Oxford Companion to Music 1 rev 1930s 20th century Performing arts Music Opera Europe...

North America

North America: c. 30,000 years ago - 2011  

Reference type:
Timeline
Current Version:
2012

...1960s 20th century Literature American literature Literature in English Fiction United States 1960 1960 Democrat candidate John F. Kennedy defeats Republican Richard Nixon in the US presidential election Kennedy, John Fitzgerald (b. 29 May 1917) A Dictionary of Contemporary World History 3 1960s 20th century Politics US presidents Rulers and politicians United States 1961 1961 President Kennedy appoints his younger brother Robert to the position of US attorney-general Kennedy, Robert Francis (b. 20 Nov) A Dictionary of Contemporary World History 3 1960s 20th...

United States

United States: c. 30,000 years ago - 2011  

Reference type:
Timeline
Current Version:
2012

...1960s 20th century Literature American literature Literature in English Fiction North America 1960 1960 Democrat candidate John F. Kennedy defeats Republican Richard Nixon in the US presidential election Kennedy, John Fitzgerald (b. 29 May 1917) A Dictionary of Contemporary World History 3 1960s 20th century Politics US presidents Rulers and politicians North America 1961 1961 President Kennedy appoints his younger brother Robert to the position of US attorney-general Kennedy, Robert Francis (b. 20 Nov) A Dictionary of Contemporary World History 3 1960s 20th...

France

France: c. 31,000 years ago - 2007  

Reference type:
Timeline
Current Version:
2012

...and Fable 2 First World War 20th century Social and domestic War Europe Society Wars since 1900 1921 1921 The Swiss architect Le Corbusier begins a 20-year partnership with his cousin, Pierre Jeanneret Corbusier, Le. A Dictionary of Architecture and Landscape Architecture 2 20th century Architecture French architecture Europe 1922 1922 James Joyce's novel Ulysses is published in Paris, by Sylvia Beach, because of censorship problems elsewhere Joyce, James Augustine (1882–1941) Who's Who in the Twentieth Century 1 1920s 20th century Literature French...

Britain

Britain: c. 800,000 years ago - 2011  

Reference type:
Timeline
Current Version:
2012

...1917 1917 Jeeves and Bertie Wooster make their first appearance in P.G. Wodehouse's The Man with Two Left Feet Wodehouse, Sir P. G. (1881–1975) The Concise Oxford Companion to English Literature 3 1910s 20th century Literature English literature Literature in English Fiction Great Britain - from 1707 United Kingdom - from 1801 British Isles Europe 1917 1917 John Ireland's Second Violin Concerto meets with immediate approval Ireland, John Nicholson (1879–1962) World Encyclopedia 1 1910s 20th century Performing arts Music Great Britain - from 1707 United...

British Isles

British Isles: c. 800,000 years ago - 2011  

Reference type:
Timeline
Current Version:
2012

...20th century Performing arts Music Great Britain - from 1707 United Kingdom - from 1801 Europe Britain 1969 1969 The first series of Monty Python's Flying Circus is broadcast on British TV Monty Python's Flying Circus The Oxford Dictionary of Phrase and Fable 2 1960s 20th century Performing arts Great Britain - from 1707 United Kingdom - from 1801 Europe Britain 1969 1969 19-year-old rugby player J.P.R. Williams makes his debut for Wales in a match against Scotland Williams, J(ohn) P(eter) R(hys) (1949– ) Who's Who in the Twentieth Century 1 1960s 20th...

Wales

Wales: 77 - 2005  

Reference type:
Timeline
Current Version:
2012

...a sliding slag heap buries a primary school in the Welsh village of Aberfan Aberfan disaster A Dictionary of British History 1 rev 1960s 20th century Great Britain - from 1707 United Kingdom - from 1801 British Isles Europe Britain 1969 1969 19-year-old rugby player J.P.R. Williams makes his debut for Wales in a match against Scotland Williams, J(ohn) P(eter) R(hys) (1949– ) Who's Who in the Twentieth Century 1 1960s 20th century Sports and games Great Britain - from 1707 United Kingdom - from 1801 Scotland British Isles Europe Society Britain 1980 1980 The...

Europe

Europe: c. 800,000 years ago - 2011  

Reference type:
Timeline
Current Version:
2012

...1910s 20th century Arts Painting French painting French art France 1917 1917 Jeeves and Bertie Wooster make their first appearance in P.G. Wodehouse's The Man with Two Left Feet Wodehouse, Sir P. G. (1881–1975) The Concise Oxford Companion to English Literature 3 1910s 20th century Literature English literature Literature in English Fiction Great Britain - from 1707 United Kingdom - from 1801 British Isles Britain 1917 1917 John Ireland's Second Violin Concerto meets with immediate approval Ireland, John Nicholson (1879–1962) World Encyclopedia 1 1910s 20th...

Scotland

Scotland: c. 2500 BCE - 2007  

Reference type:
Timeline
Current Version:
2012

...in his 'Raj Quartet' Raj Quartet, The The Oxford Companion to Twentieth-Century Literature in English 1 1960s 20th century Literature English literature Literature in English Fiction Great Britain - from 1707 United Kingdom - from 1801 British Isles Europe Britain 1969 1969 19-year-old rugby player J.P.R. Williams makes his debut for Wales in a match against Scotland Williams, J(ohn) P(eter) R(hys) (1949– ) Who's Who in the Twentieth Century 1 1960s 20th century Sports and games Great Britain - from 1707 United Kingdom - from 1801 Wales British Isles Europe...

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