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ion
ion
A Dictionary of Food and Nutrition
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2005
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© A Dictionary of Food and Nutrition 2005, originally published by Oxford University Press 2005. (Hide copyright information)
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ion An atom or molecule that has lost or gained one or more electrons, and thus has an electric charge. Positively charged ions are known as cations, because they migrate towards the cathode (negative pole) in solution, while negatively charged ions migrate towards the positive pole (anode) and hence are known as anions.
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Gaseous ions and chemical mass spectrometry (1).(AWARD LECTURE/CONFERENCE D'HONNEUR)(Report)
Magazine article from: Canadian Journal of Chemistry; 3/1/2008; ; 700+ words
; ...phase. Key words: ions, mass spectrometry, kinetics, ion chemistry. Resume...l'injection des ions dans le tube a ecoulement...production de l'ion (par exemple, par...rates of electron-ion recombination between atomic and molecular ions, in determining the...
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Ion Transport through Membrane-Spanning Nanopores Studied by Molecular Dynamics Simulations and Continuum Electrostatics Calculations
Magazine article from: Biophysical Journal; 10/1/2005; ; 700+ words
; ...preference of hydrated ions to move along the pore...the pore. INTRODUCTION Ion transport across membranes...highly permeable for K+ ions but not Na+ ions. Structural studies of...provided new insight into ion-channel gating, relating...
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2007 ION(R) Awards Finalists Announced.
Business Wire; 5/15/2007; 700+ words
; ...Business Magazine. For more information on the ION[R] Awards recipients, please visit http://www.ionAwards.com. About the ION[R] Network and Positive Ions, Inc. The ION[R] Network features a unique broadcast and...
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ION Networks Announces ION Secure 2500 Security Appliance; New Solution Targeting Small Branch Locations Ships to First Customers.
Business Wire; 12/18/2002; 700+ words
; ...BUSINESS WIRE)--Dec. 18, 2002 ION Networks, Inc. (Nasdaq: IONN), a leading...for small or remote branch offices. The ION Secure 2500 is specifically designed to...by network and vendor support staff. The ION Secure 2500 can also be integrated as part...
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Ion Leakage through Transient Water Pores in Protein-Free Lipid Membranes Driven by Transmembrane Ionic Charge Imbalance
Magazine article from: Biophysical Journal; 3/15/2007; ; 700+ words
; ...force-fields for ions). What is more, a potassium ion is found to be able...mainly governed by ion channels, lipid...barriers. Instead, ions as well as water...compounds such as ions (2,3). This pore-mediated ion leakage is believed...
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ION Networks Announces PRIISMS Authentication Gateway Module; Optional Software Component Provides Compatibility with Other Popular Security Solutions.
Business Wire; 11/19/2002; 700+ words
; ...BUSINESS WIRE)--Nov. 19, 2002 ION Networks, Inc. (Nasdaq: IONN), a leading...optional component for the recently released ION Secure PRIISMS v2.1 - a single sign...administrator-class users - that allows ION Secure solutions to coexist with other widely...
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ION Life to Add Compelling New Programming and Award-Winning Content to Lineup.
Business Wire; 5/19/2008; 700+ words
; ...Most Famous Arena" WEST PALM BEACH, Fla. -- ION Media Networks, Inc. announced today that ION Life, its network dedicated to active living...first commissioned production from NFL Films, ION Life will present the new series, "Stories...
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ION Media Networks Launches 24-Hour Broadcast Diginet Branded 'ION Life'.
Business Wire; 2/21/2007; 700+ words
; ...Lifestyles Debuts Across Nation's Largest TV Station Group WEST PALM BEACH, Fla. -- ION Media Networks, Inc. (AMEX:ION) today announced the launch of ION Life, the country's first broadcast television network dedicated to content promoting...
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Ion exchange and surface charge on montmorillonite clay
Magazine article from: Water Environment Research; 5/1/1999; ; 700+ words
; ...transport of hazardous ions in aqueous systems...part governed by ion exchange with reactive...otherwise undesirable ions from drinking water. Ion exchange has been...understanding of ion exchange can lead...and transport of ions in subsurface and...
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ION Networks Unveils `Disposable' Security Tokens; Innovative Handheld Applications Aim to Contribute to Broadened Enterprise and Coexistence Strategies.
Business Wire; 9/25/2002; 700+ words
; ...BUSINESS WIRE)--Sept. 25, 2002 ION Networks, Inc. (Nasdaq: IONN), a leading...software-based authentication tokens into its ION Secure(TM) solutions suite, representing...and Microsoft Windows(R) platforms, ION Secure 520 Soft Tokens are software applications...
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ion
Book article from: The Columbia Encyclopedia, Sixth Edition
...ions, H + , or basic ions such as hydroxide ion, OH - , make acidic...mineral zeolite, a natural ion-exchange resin; sodium ions from the zeolite are...it to a soluble salt. Ion-permeable membranes allow some ions to pass through more...
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Ion Channels
Book article from: Chemistry: Foundations and Applications
...open and close to allow ions to diffuse down their...in or out of a cell. Ion channels are specific...combinations of types) of ions, such as chloride...electrical potential. When an ion channel is open, a million ions can flow in or out of...
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Ions and Ionization
Book article from: Science of Everyday Things
...dissociated into its component ions in a solution such as water...form of static electricity. Ion exchange, or the replacement of one ion by another, is used in applications...while chemists and physicists use ions in mass spectrometry, to discover...
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Ion Propulsion
Book article from: Space Sciences
...spacecraft been flown. Ion propulsion works by taking...into positively charged ions. The xenon ions drift...second. Once the xenon ions are free of the engine...magnetic fields to accelerate ions. A key advantage of ion propulsion is efficiency...
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ion channels
Book article from: The Oxford Companion to the Body
...pores, through which ions can flow. Ion fluxes across the...ligand-activated. Ion channels are selectively...different classes of small ions; this is necessary...effectively between ions that are similar...potassium-selective ion channels prefer potassium...
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