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Overview

14

C a radioactive isotope of normal carbon (12C) emitting a weak beta particle. The half-life of 14C is 5,700 years. This radioisotope is extensively used as a tracer in molecular biology. ...

annexin 14

annexin 14   Reference library

Oxford Dictionary of Biochemistry and Molecular Biology (2 ed.)

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Life Sciences
Length:
6 words

...14 other name : annexin...

14C

14C   Quick reference

A Dictionary of Genetics (8 ed.)

Reference type:
Subject Reference
Current Version:
2014
Subject:
Science and technology, Life Sciences
Length:
31 words

... C a radioactive isotope of normal carbon ( 12 C) emitting a weak beta particle. The half-life of 14 C is 5700 years. This radioisotope is extensively used as a tracer in molecular...

interleukin-14

interleukin-14   Quick reference

A Dictionary of Biomedicine (2 ed.)

Reference type:
Subject Reference
Current Version:
2019

...interleukin-14 ( IL-14 ) A protein (high molecular weight B-cell growth factor, HMW-BCGF, 546 aa) originally thought to be a cytokine that enhanced proliferation of activated B cells, now redesignated as α ‎- taxilin ....

Mel-14

Mel-14   Quick reference

A Dictionary of Biomedicine (2 ed.)

Reference type:
Subject Reference
Current Version:
2019

...Mel-14 A monoclonal antibody that reacts with L-selectin (CD62L) and will block lymphocyte binding to HEV both in vitro and in vivo ....

carbon‐14

carbon‐14   Reference library

Oxford Dictionary of Biochemistry and Molecular Biology (2 ed.)

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Life Sciences
Length:
63 words

...14 a radioactive nuclide of carbon, 14 6 C. It emits an electron (β − ‐particle) (0.156 Mev), no γ‐radiation, and has a half‐life of 5730 years, decaying to 14 7 N. A minute proportion occurs in atmospheric CO 2 due to the action of cosmic rays, and it forms the basis of carbon dating . It is used very widely as a radioactive tracer, for which it is produced...

Complex 14

Complex 14   Quick reference

A Dictionary of Space Exploration (3 ed.)

Reference type:
Subject Reference
Current Version:
2018

...Complex 14 A launch site at the Kennedy Space Center for the Mercury spacecraft ( see mercury project ), including the first US orbital flight by John Glenn . Located 5 km south of Complex 39 , it is now out of...

lin14

lin14   Reference library

Oxford Dictionary of Biochemistry and Molecular Biology (2 ed.)

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Life Sciences
Length:
49 words

...14 a gene involved in embryonic development in Caenorhabditis elegans that codes for a nuclear protein. Regulatory sequences in the 3′ untranslated region generate a temporal switch during development. There are three forms of the product: A (537 amino acids); B1 (539 amino acids); and B2 (515 amino...

Article 14

Article 14   Reference library

The New Oxford Companion to Law

Reference type:
Subject Reference
Current Version:
2009
Subject:
Law
Length:
464 words

...associated with a protected ground. The latter form of discrimination (generally known as indirect discrimination or disparate impact) is very under‐developed in Article 14 jurisprudence but the decision in Thlimmenos v Greece ( 2001 ) is an example of such discrimination being found to breach Article 14. Less favourable treatment on a protected ground will not breach Article 14 if it is justifiable ( Belgian Linguistic Case (No 2) ( 1968 ). Different standards of justification appear to apply to different protected grounds, the European Court of Human...

Demetrius (14)

Demetrius (14) (c.100 bc)(of Laconia)   Reference library

William David Ross and Dirk Obbink

The Oxford Classical Dictionary (4 ed.)

Reference type:
Subject Reference
Current Version:
2012
Subject:
Classical studies, History
Length:
344 words

...(14) ( RE 115), of Laconia ( c. 100 bc ) , Epicurean pupil of Protarchus of Bargylia and younger contemporary of Philodemus' teacher Zeno (5) of Sidon. He refuted Carneades' attack on the possibility of proof, and expounded Epicurus' epiphenomenal doctrine of time as an ‘accident of accidents’. Aëtius ( 1 ) (1. 18. 3 p. 316, 4 Diels) includes him, along with Leucippus (3) , Democritus , and Metrodorus (2) , in a list of those who think that atoms ( see atomism ) are infinite in number and that void is infinite in extent. Philodemus in On...

carbon‐14

carbon‐14   Quick reference

A Dictionary of Environment and Conservation (3 ed.)

Reference type:
Subject Reference
Current Version:
2017

...14 ( 14 C ) A naturally occurring carbon isotope that is produced in the atmosphere by cosmic ray bombardment and has a half‐life of 5700 years. It is useful for the absolute dating of samples up to 40 000 years old. See also radiocarbon dating...

14 Printed Ephemera

14 Printed Ephemera   Reference library

The Oxford Companion to the Book

Reference type:
Subject Reference
Current Version:
2010
Subject:
History, Social sciences
Length:
7,034 words
Publisher:
Oxford University Press
Illustration(s):
1

... Printed Ephemera Michael Harris 1 Introduction 2 Some definitions 3 Collecting ephemera: ballads, chapbooks, almanacs, and newspapers 4 Other collections 5 Conclusion 1 Introduction The category of ephemera forms an elusive, sometimes contentious, element in the output of print. The aim of this essay is not to attempt to describe everything that can be identified as ephemera, but rather to trace the category’s porous boundaries and, in particular, to suggest how different forms have, over time, changed in their relationship to the book. Ephemera...

March 14 Alliance

March 14 Alliance   Quick reference

A Dictionary of Politics in the Middle East

Reference type:
Subject Reference
Current Version:
2018
Subject:
Social sciences, Politics
Length:
112 words

...March 14 Alliance Lebanese political coalition named after the date of the Cedar Revolution in 2005 that resulted in the withdrawal of Syrian forces from Lebanon. Led by Saad Hariri , the March 14 Alliance consisted initially of seventeen political parties, from liberal to conservative and Islamist to secular. The March 14 Alliance demanded the end of Syrian interference in Lebanon and investigation of the murder of former Prime Minister Rafik Hariri , whose assassination in February 2005 triggered the Cedar Revolution. The March 14 Alliance held...

Diploma 14–19

Diploma 14–19   Quick reference

A Dictionary of Education (2 ed.)

Reference type:
Subject Reference
Current Version:
2015
Subject:
Social sciences, Education
Length:
176 words

...14–19 A qualification for 14–19-year-olds, introduced in 2008 , to run alongside the General Certificate of Secondary Education and the General Certificate of Education Advanced Level . The 14–19 Diploma combined theoretical and practical learning, including work experience, and was aimed at young people of all ability levels. One of its purposes was to bridge the gap between vocational and academic routes. It constituted part of a wider reform of education for 14–19-year-olds discussed in the 2005 White Paper 14–19 Education and Skills ,...

Carbon-14 Dating

Carbon-14 Dating   Reference library

Encyclopedia of the Dead Sea Scrolls

Reference type:
Subject Reference
Current Version:
2008

...14 Dating . Radiocarbon testing is the primary method used by archaeologists for dating organic and other materials containing the radioactive carbon isotope C 14 . All plant and animals absorb C 14 from the environment. The C 14 isotope is continually produced in a reaction from the bombardment of nitrogen atoms with cosmic radiation in the upper atmosphere. When an organism dies, it ceases to be in equilibrium with its surroundings (that is, ceases taking in new carbon). The C 14 isotope at the point of death decays at a known half-life rate (about...

14–19 agenda

14–19 agenda   Quick reference

A Dictionary of Education (2 ed.)

Reference type:
Subject Reference
Current Version:
2015
Subject:
Social sciences, Education
Length:
285 words

...–19 agenda The focus on the development and implementation of education provision for 14–19-year-olds in the UK in the first decade of the 21st century. Following the final report in 2004 of the committee chaired by Mike Tomlinson , which proposed a radical reform of qualifications for students at Key Stage 4 and in 16–19 education, the government published the White Paper 14–19 Education and Skills in February 2005 . This White Paper, and its accompanying implementation plan, identified several proposals aimed at ‘improving choice, improving...

group 14 elements

group 14 elements   Quick reference

A Dictionary of Chemistry (8 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Science and technology, Chemistry
Length:
337 words

...14 elements A group of elements in the periodic table : carbon (C), silicon (Si), germanium (Ge), tin (Sn), and lead (Pb), which all have outer electronic configurations ns 2 np 2 with no partly filled inner levels. Formerly, they were classified in group IV, which consisted of two subgroups: IVB (the main group) and group IVA. Group IVA consisted of titanium (Ti), zirconium (Zr), and hafnium (Hf), which now form group 4 and are generally considered with the transition elements . The main valency of the elements is 4, and the members of the group show a...

vitamin B14

vitamin B14   Quick reference

A Dictionary of Food and Nutrition (4 ed.)

Reference type:
Subject Reference
Current Version:
2014

...B 14 Not an established vitamin; name originally given to a substance found in human urine that increases the rate of cell proliferation in bone-marrow...

EcoT14I

EcoT14I   Reference library

Oxford Dictionary of Biochemistry and Molecular Biology (2 ed.)

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Life Sciences
Length:
13 words

...T14I a type 2 restriction endonuclease ; recognition sequence: C↑C[AT][AT]GG. Sty I is an isoschizomer...

M-14 Garand rifle

M-14 Garand rifle   Reference library

The Oxford Essential Dictionary of the U.S. Military

Reference type:
Subject Reference
Current Version:
2002

...14 Garand rifle a gas-operated .30-06 rifle developed by the Army in the 1950s that uses a twenty-round detachable box-type...

14-3-3 proteins

14-3-3 proteins   Quick reference

A Dictionary of Biomedicine (2 ed.)

Reference type:
Subject Reference
Current Version:
2019

...14-3-3 proteins A family of conserved regulatory adaptor molecules ( ˜ 250 aa) that bind to phosphoserine-containing proteins, including a wide range of functionally diverse signalling proteins, including kinases, phosphatases, and transmembrane receptors. There are seven highly conserved human 14-3-3 proteins ( β ‎, γ ‎, ε ‎, η ‎, σ ‎, θ ‎, ζ ‎) and they are involved in cellular proliferation, checkpoint control, and apoptosis. For example, 14-3-3- σ ‎ (stratifin, 248 aa) is particularly abundant in stratified keratinizing epithelium and is strongly...

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