CZ:Featured article/Current: Difference between revisions

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imported>Chunbum Park
(dementia)
imported>Chunbum Park
(Higgs boson)
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== '''[[Dementia]]''' ==
== '''[[Higgs boson]]''' ==
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'''Dementia''' is "progressive decline in two or more cognitive domains that is severe enough to interfere with the performance of everyday activities."<ref name="pmid12614094">{{cite journal |author=Karlawish, J. & Clark, C. |title=Diagnostic evaluation of elderly patients with mild memory problems |journal=Ann Intern Med |volume=138 |issue=5 |pages=411-9 |year=2003 |pmid=12614094 | url=http://www.annals.org/cgi/content/full/138/5/411}}</ref>
The '''Higgs boson''' is a massive spin-0 [[elementary particle]] in the [[Standard Model]] of [[particle physics]] that plays a key role in explaining the mass of other elementary particles. Its experimental discovery was announced in a seminar July 4, 2012.<ref name=Higgs>


Deficits in cognitive function contribute to impaired functional status.<ref name="pmid17827410">{{cite journal |author=Royall DR, Lauterbach EC, Kaufer D, Malloy P, Coburn KL, Black KJ |title=The cognitive correlates of functional status: a review from the Committee on Research of the American Neuropsychiatric Association |journal=The Journal of neuropsychiatry and clinical neurosciences |volume=19 |issue=3 |pages=249–65 |year=2007 |pmid=17827410 |doi=10.1176/appi.neuropsych.19.3.249}}</ref> The deficits in the domains of cognitive function are<ref name="pmid17551132">{{cite journal |author=Holsinger T, Deveau J, Boustani M, Williams JW |title=Does this patient have dementia? |journal=JAMA |volume=297 |issue=21 |pages=2391–404 |year=2007 |pmid=17551132 |doi=10.1001/jama.297.21.2391}}</ref>:
Announced at a CERN seminar in Geneva. See {{cite web |title=Higgs boson discovery brings scientists close to understanding mass |publisher=Washington Post |url=http://www.washingtonpost.com/business/higgs-boson-discovery-brings-scientists-lose-to-understanding-mass/2012/07/05/gJQA23iQPW_story.html |author=Thomas Mulier and Jason Gale |accessdate=2012-07-05 |quote=The data presented yesterday are the latest from the $10.5 billion [[Large Hadron Collider]], a 27-kilometer (17-mile) circumference particle accelerator buried on the border of France and Switzerland. CERN has 10,000 scientists working on the project...}}
* Agnosia - "Failure to recognize or identify objects despite intact sensory function"<ref name="pmid17551132"/>
* Aphasia - "Deterioration of language function"<ref name="pmid17551132"/>
* Apraxia - "Impaired ability to execute motor activities despite intact motor abilities, sensory function, and comprehension of the required task"<ref name="pmid17551132"/>
* Disturbance in executive functioning - "The ability to think abstractly and to plan, initiate, sequence, monitor, and stop complex behavior"<ref name="pmid17551132"/>


''[[Dementia|.... (read more)]]''
</ref><ref name=CERN>
{{cite web |title=CERN experiments observe particle consistent with long-sought Higgs boson |date=4 July 2012 |publisher=CERN press office |accessdate=2012-07-05 |url=http://press.web.cern.ch/press/PressReleases/Releases2012/PR17.12E.html}}
</ref> This particle was first proposed by Professor [[Peter Higgs]] of [[University of Edinburgh|Edinburgh University]] in 1964 as a means to explain the origin of the masses of the elementary particles by the introduction of an fundamental scalar field. This gives all the fundamental particles mass via a process of spontaneous symmetry breaking called the ''Higgs Mechanism''. The Higgs boson was popularised as the "God particle" by the [[Nobel Prize]]-winning [[physicist]] [[Leon M. Lederman]] in his 1993 popular science book ''The God Particle: If the Universe Is the Answer, What is the Question?'' co-written with science writer Dick Teresi.<ref>Leon M. Lederman and R Teresi (1993) ''The God Particle: If the Universe Is the Answer, What is the Question?'' Dell. ISBN 0-385-31211-3</ref><ref> [http://www.newscientist.com/article/dn16618-fermilab-closing-in-on-the-god-particle.html Fermilab 'closing in' on the God particle] ''New Scientist''</ref>
 
''[[Higgs boson|.... (read more)]]''


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Revision as of 22:18, 5 July 2012

Higgs boson

The Higgs boson is a massive spin-0 elementary particle in the Standard Model of particle physics that plays a key role in explaining the mass of other elementary particles. Its experimental discovery was announced in a seminar July 4, 2012.[1][2] This particle was first proposed by Professor Peter Higgs of Edinburgh University in 1964 as a means to explain the origin of the masses of the elementary particles by the introduction of an fundamental scalar field. This gives all the fundamental particles mass via a process of spontaneous symmetry breaking called the Higgs Mechanism. The Higgs boson was popularised as the "God particle" by the Nobel Prize-winning physicist Leon M. Lederman in his 1993 popular science book The God Particle: If the Universe Is the Answer, What is the Question? co-written with science writer Dick Teresi.[3][4]

.... (read more)

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