CATION

kătˌīˈən, atom or group of atoms carrying a positive charge. The charge results because there are more protons than electrons in the cation. Cations can be formed from a metal by oxidation (see oxidation and reduction), from a neutral base (see acids and bases) by protonation, or from a polar compound by ionization. Cationic species include Na+, Mg++, and NH4+. The cations of the transition elements have characteristic colors in water solution. Salts are made up of cations and anions. See ion.

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The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Cation
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books on: Cation  - 13042 results

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1.
Listening In: Music, Mind, and the Modernist Narrative
Book by Eric Prieto; University of Nebraska Press, 2002
Subjects: Music And Literature--History--20th Century, Music--Philosophy And Aesthetics
...all, as we saw, the concept of exempli cation provides an explanation of nonrepresentational...if we agree with Goodman that "exempli cation, like denotation, relates a symbol to...meaning, because denotation and exempli cation follow the same referential path, albeit...
2.
AP Chemistry: 2008-2009
Book by John T. Moore, Richard H. Langley; McGraw-Hill, 2008
Subjects: Advanced Placement Programs (Education)--Examinations--Study Guides, Chemistry--Examinations--Study Guides, College Entrance Achievement Tests--United States--Study Guides
...the acid. In principle, the cation of the base is the conjugate...the solution neutral. The cations from the strong bases, Li...a combination of only these cations and anions are neutral. The...conjugate of a strong base (cation), the solution will be basic...
3.
Radioisotopes in Biology and Agriculture: Principles and Practice
Book by C. L. Comar; McGraw-Hill, 1955
Subjects: Radioisotopes In Agriculture, Radioisotopes In Biology
...9-5 . Cation Exchangers. Cation or base exchangers can be regarded...ions. Many of the organic cation exchangers utilize sulfonic...of some of the commonly used cation exchangers that are commercially...Anion exchangers are polyvalent cations with negatively charged exchangeable...
4.
Tropical Forest Ecology: A View from Barro Colorado Island
Book by Egbert Giles Leigh Jr.; Oxford University Press, 1999
Subjects: Barro Colorado Island (Panama), Forest Ecology--Panama--Barro Colorado Island
...least a remnant of the soils cation exchange capacity. Cation exchange capacity, the readiness with which the soil exchanges cations with the surrounding water...Amazonia, plant products enhance cation exchange capacity more directly...
5.
Fundamental Concepts of Inorganic Chemistry
Book by Esmarch S. Gilreath; McGraw-Hill, 1958
Subjects: Chemistry, Inorganic
...general formula CA, if the ratio of the cation radius to the anion radius, r c / r A...only two anions can be arranged about a cation so that the three ions are in contact...three anions may be in contact with one cation at the same time. If the ratio is greater...
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journal articles on: Cation  - 831 results

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1.
A Screen for Nigericin-resistant Yeast Mutants Revealed Genes Controlling Mitochondrial Volume and Mitochondrial Cation Homeostasis
Journal article by Blanka Kucejova, Martin Kucej, Silvia Petrezselyova, Lenka Abelovska, Lubomir Tomaska; Genetics, Vol. 171, 2005
Subjects: Cations, DNA Primers, Genetics, Mdm31 protein, S cerevisiae, Mdm32 protein, S cerevisiae, Membrane Proteins, Mitochondrial DNA, Mitochondrial Proteins, Nigericin, Saccharomyces cerevisiae Proteins, Yeast
...Volume and Mitochondrial Cation Homeostasis by Blanka...electrophoretic influx of cations into the mitochondrial...hypothesized that mitochondrial cation asymmetry could be sustained...associated proton/ cation antiporter(s), which would export cations out of the matrix using...
2.
The Cation Diffusion Facilitator Gene Cdf-2 Mediates Zinc Metabolism in Caenorhabditis Elegans
Journal article by Diana E. Davis, Cheol Hyun Roh, Krupa Deshmukh, Janelle J. Bruinsma, Daniel L. Schneider, James Guthrie, J. David Robertson, Kerry Kornfeld; Genetics, Vol. 182, 2009
Subjects: Animals, Biology, E coli, Proteins, Signal transduction, Studies, Zinc
The Cation Diffusion Facilitator Gene Cdf-2 Mediates...critical roles in transporting zinc, the cation diffusion facilitator (CDF/SLC30) family...elegans cdf-2 encodes a member of the cation diffusion facilitator family: Vertebrates...
3.
From Nielsen Estate to Africa House: Ed"we"cation and Male/female Relations in Rural Woodside, Jamaica
Journal article by Catherine John; Caribbean Quarterly, Vol. 52, 2006
...From Nielsen Estate to Africa House: Ed"we"cation and Male/female Relations in Rural Woodside...to me that development involved "ed-we-cation" rather than simply "ed-you-cation." Those of us coming into struggling communities...
4.
Communi Cations
Journal article by Jim Peck, Jim Sanford; Bulletin of Concerned Asian Scholars, Vol. 2, 1970
Subjects: Asia
COMMUNI CATIONS Asia Scholars to End the War A newly formed committee called Asia Scholars to End the War is currently circulating a petition expressing...
5.
A Specific Subset of Transient Receptor Potential Vanilloid-type Channel Subunits in Caenorhabditis Elegans Endocrine Cells Function as Mixed Heteromers to Promote Neurotransmitter Release
Journal article by Antony M. Jose, I. Amy Bany, Daniel L. Chase, Michael R. Koelle; Genetics, Vol. 175, 2007
Subjects: Behavior, Caenorhabditis elegans Proteins, Cells, Diabetes, Endocrinology, Ion Channels, Nerve Tissue Proteins, Neurons, Neurotransmitters, OCR-1 protein, C elegans, OCR-2 protein, C elegans, Pancreas, Proteins, TRPV Cation Channels, Worms
...into electrical signals (MONTELL 2005). These tetrameric cation channels can be homomers of identical subunits or heteromers...tetramers (Figure 8). When the uterus is not full, these cation channels are active, leading to Ca21 influx that promotes the...
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magazine articles on: Cation  - 197 results

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1.
Altar-Cation
Magazine article by Phineas Baxandall, Robert; The American Prospect, Vol. 15, April 2004
Subjects: Massachusetts. Supreme Judicial Court--Cases, Same-sex marriage--Laws, regulations and rules
Altar-Cation. by Phineas Baxandall , Robert PAUL STARRS DISCUSSION of gay marriage and political tactics "Judicial Overreach," March recognizes...
2.
Empires of the Sons (and the Friends, and the Mistresses.)
Magazine article by Eric Konigsberg; Washington Monthly, Vol. 24, June 1992
Subjects: Civil service positions--Political aspects, Public officers--Employment
...Austin to help out his longtime campaign manager, Paul Cation. Cation, a lawyer, was recovering from mental problems aggravated...the next year, although the FBI had notified GSA that Cation was under investigation for bank fraud. Even after...
3.
How to Protect and Defend Free Trade
Magazine article by José Guilherme Reis, Thomas Farole; Americas Quarterly, Vol. 5, Winter 2011
Subjects: Exports, International trade, Labor costs, Manufacturing, Productivity, Studies, Tourism
...strategies: Diversify Exports 1 Diversifi cation of exports is a potent buffer against...have been supported by a rapid diversifi cation of exports over the last 20 years. Nicaragua...manufacturing. The next step in the diversifi cation agenda needs to go beyond manufacturing...
4.
From Kinase to Cancer
Magazine article by Lewis Cantley; The Scientist, Vol. 21, December 2007
Subjects: Cancer, Cell growth, Clinical trials, Enzymes, Kinases, Laboratories, Metabolic disorders, Studies, Tumors
...hormones regulate the flux of cations into and out of cells. Growth...lipid regulated the activity of cation transporters. The discovery...support our work on regulation of cation transport systems. Along the...critical role in regulation of cation transport systems in response...
5.
Electrolytes; the Charge in the Body's Power System
Magazine article by Annabel Hecht; FDA Consumer, Vol. 20, July 1986
Subjects: Calcium (Nutrients)--Physiological aspects, Calcium in the body--Physiological aspects, Chlorides--Physiological aspects, Electrolyte metabolism--Analysis, Electrolytes--Physiological aspects, Magnesium (Nutrients)--Physiological aspects, Magnesium in the body--Physiological aspects, Potassium (Chemical element)--Physiological aspects, Potassium--Physiological aspects, Sodium (Nutrients)--Physiological aspects, Sodium in the body--Physiological aspects
...positive charge; they are called cations (pronounced kati uns). Others...anions (ani uns). The major cations are potassium, magnesium...Potassium As the principal cation in the intracellular fluid...depression. Sodium The principal cation in the extracellular fluid...
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newspaper articles on: Cation  - 317 results

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1.
Stay-Cation Throws Up Gastro-Pub Opportunities
Newspaper article; Western Mail (Cardiff, Wales), August 22, 2009
Stay-Cation Throws Up Gastro-Pub Opportunities...Like everyone else, were taking a stay-cation this year and holidaying in West Wales...say more other than hooray for the stay-cation? Q Im looking for some pretty tea towels...
2.
Faux-Cation? with the Economy Canceling Vacation Plans, Many Would-Be Travelers
Newspaper article; Daily Herald (Arlington Heights, IL), July 31, 2008
Subjects: Economic conditions, Travelers--Economic aspects
Faux-Cation? with the Economy Canceling Vacation Plans, Many Would-Be Travelers. Faux-cation? With the economy canceling vacation plans, many would-be travelers are simply faking them Page 4 Lights, camera, action NBC gears up to...
3.
Staycation? This Year It's a Nay-Cation; A WICKEDLY FUNNY TAKE ON MODERN IRELAND
Newspaper article; The Mail on Sunday (London, England), August 15, 2010
Staycation? This Year Its a Nay-Cation; A WICKEDLY FUNNY TAKE ON MODERN IRELAND. Byline: Anne Gildea...Vacation? Staycation? Actually this year I have decided on a nay-cation. Thats where you decide youre not going to have a holiday, but...
4.
Forget Vacations, This Summer We're All Going on a Stay-Cation; Rise in Day Trips Predicted as Cost of Flying Goes Up
Newspaper article; Western Mail (Cardiff, Wales), June 24, 2008
Forget Vacations, This Summer Were All Going on a Stay-Cation; Rise in Day Trips Predicted as Cost of Flying Goes Up. Byline...TOURISM leader has warned 2008 could be the year of the "stay-cation" - vacationing at home - as holiday-makers prepare to swap...
5.
Altar-Cation Ruined a Jolly Nice Cotswolds Wedding; Family Fallout after Father of Bride Is Floored by Nephew
Newspaper article; Evening Gazette (Middlesbrough, England), November 19, 2011
Subjects: Family
Altar-Cation Ruined a Jolly Nice Cotswolds Wedding; Family Fallout after Father of Bride Is Floored by Nephew. A WEDDING was wrecked when...
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encyclopedia articles on: Cation  - 6 results

       More encyclopedia Results: 1-6 >>  
 
1.
Cation
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
CATION kat i n, atom or group of atoms carrying...are more protons than electrons in the cation. Cations can be formed from a metal by oxidation...include Na + , Mg ++ , and NH 4 + . The cations of the transition elements have characteristic...
2.
Alum
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...that are hydrated sulfates of a univalent cation (e.g., potassium, sodium, ammonium, cesium, or thallium) and a trivalent cation (e.g., aluminum, chromium, iron...is a double sulfate salt of a divalent cation (e.g., magnesium or calcium) and...
3.
Isomorphism
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...solid solution. Isomorphous substances usually have similar chemical formulas, and the polarizability and ratio of anion and cation radii are generally comparable (see ion ). Isomorphism was discovered (c.1820) by Eilhard Mitscherlich, who stated the...
4.
Valence , in Chemistry
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...and form compounds in which they exist in the positive, or cationic, state, are assigned positive oxidation numbers (see cation ). For a metal such as zinc, which donates two electrons to achieve a stable electron configuration, the oxidation number...
5.
Ion , in Chemistry
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...positive charge and is called a cation . If an atom or group gains...normally exist as groups of cations and anions such that the sum...chloride, NaCl, the sodium cations, Na + , are neutralized by...carbonate, Na 2 CO 3 , two sodium cations are needed to neutralize each...
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