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anion
anion
anion A negative ion, i.e. an atom, or complex of atoms, that has gained one or more electrons and thereby carries a negative electric charge, e.g. Cl
−, OH
−, and SO
42−. So-called because when an electric current is passed through a conducting solution the negative ions present in the solution are attracted to the anode (the positive electrode). Compare
CATION.
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Anion gap, anion gap corrected for albumin, base deficit and unmeasured anions in critically ill patients: implications on the assessment of metabolic acidosis and the diagnosis of hyperlactatemia.(Research article)(Report)
Magazine article from: BMC Emergency Medicine; 12/16/2008; ; 700+ words
; ...Michael G Seneff [1] Background The use of anion gap assessment to interpret and diagnose...a gap acid, is one cause of elevated anion gap metabolic acidosis, and an elevated...measured and calculated lab values, such as anion gap (AG) and base deficit (BD), accurately...
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Influence of anions and cations on the dipole potential of phosphatidylcholine vesicles: A basis for the Hofmeister effect
Magazine article from: Biophysical Journal; 5/1/1999; ; 700+ words
; ...tension. The effect of the anions was shown to increase...order corresponded to the anions' adsorbability and suggested...membrane. The order of anion effectiveness is in agreement...precipitate a given protein. Anion effects obeying a similar...reported that lyotropic anions reversibly ...
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Adjustable capacity anion exchangers and their application in ion chromatography. (Feature).(Brief Article)(Statistical Data Included)
Magazine article from: Chemistry and Industry; 9/16/2002; ; 700+ words
; The current trend in anion exchange resin technology...polarisable and polyvalent anions in a reasonable run time...the IonPac Cryptand A1 anion exchanger at Dionex has...an adjustable capacity anion-exchange column. It...elution of polyvalent anions using low eluent concentrations...
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Characterization of Anion Channels in the Plasma Membrane of Arabidopsis Epidermal Root Cells and the Identification of a Citrate-Permeable Channel Induced by Phosphate Starvation1
Magazine article from: Plant Physiology; 12/1/2004; ; 700+ words
; ...epidermal cells and show that anion channels represent a pathway...sup 2-^ as the dominant anion in the pipette, voltage-dependent...permeable to a range of inorganic anions; however when intracellular...starvation. Thus, we investigated anion channel activity from root epidermal...
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The recognition and sensing of anions by a novel phenanthroline-bridged diamide.
Magazine article from: Canadian Journal of Chemistry; 9/1/2006; ; 700+ words
; ...peut reconnaitre un anion neutre tout en possedant...capacites a se lier aux anions. Les resultats d...binding interactions of anions are less effective...cations. The design of anion receptors is particularly...the result of an anion recognition study...Experimental Reagents All ...
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Spatial Distribution of Maxi-Anion Channel on Cardiomyocytes Detected by Smart-Patch Technique
Magazine article from: Biophysical Journal; 3/1/2008; ; 700+ words
; ...region. INTRODUCTION The maxi-anion channel has been observed in...determined recently that the maxi-anion channel is a nanoscopic pore...The channel was selective to anions, showed significant permeability...mediated by activity of the maxi-anion channel under ischemic or hypotonic...
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Answering your questions; normal range for anion gap.(Tips from the clinical experts)(Interview)(Column)
Magazine article from: Medical Laboratory Observer; 6/1/2007; 700+ words
; ...and the major measured anions, chloride, and bicarbonate. The anion gap is usually calculated...An increase in the anion gap represents a change in the pattern of anions and cations in serum. (3) An increased anion gap may be due to decreases...
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Wide Nanoscopic Pore of Maxi-Anion Channel Suits its Function as an ATP-Conductive Pathway
Magazine article from: Biophysical Journal; 9/1/2004; ; 700+ words
; ...function of the maxi-anion channel as a conductive...bulky ATP^sup 4-^ anion. We found a linear relationship...permeability of organic anions of different size and...suggested that ATP anions can permeate volumesensitive...outwardly rectifying (VSOR) anion channels in endothelial...
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The Sodium-Coupled Neutral Amino Acid Transporter SNAT2 Mediates an Anion Leak Conductance that Is Differentially Inhibited by Transported Substrates
Magazine article from: Biophysical Journal; 4/1/2007; ; 700+ words
; ...Fig. 1). In contrast to the anion conductance, alanine transport...mutation. The permeability of the anion leak conductance is higher for...a preference for hydrophobic anions, Binding of Na+ to SNAT2 is not required to activate this leak anion conductance, but it increases...
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The serum anion gap
Magazine article from: Archives of Pathology & Laboratory Medicine; 6/1/1997; ; 700+ words
; ...establish (or at least verify) the anion gap reference interval for the...calculated result remains valid. The anion gap is a calculated value...concentration of unmeasured anions in venous serum and is widely...reports have suggested that the anion gap reference interval should...
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Anion
Encyclopedia entry from: The Gale Encyclopedia of Science
Anion In an electrical field, anions are attracted to the positively-charged...pole, which is called the anode. An anion can be a negatively charged atom or group of atoms. In an electrolytic cell, anions are attracted to the positive electrode...
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anion
Book article from: The Columbia Encyclopedia, Sixth Edition
anion , atom or group of atoms carrying a negative...are more electrons than protons in the anion. Anions can be formed from nonmetals by reduction...in organic reactions are often radical anions (anions containing an unpaired electron...
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anion-exchange capacity
Book article from: A Dictionary of Plant Sciences
anion-exchange capacity The total exchangeable anions that a soil can adsorb, measured as milliequivalents per 100 grams of soil.
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Ions and Ionization
Book article from: Science of Everyday Things
...this type of ion is known as an anion (AN-ie-un). Anions can be represented symbolically in...described here is never called a chlorine anion; rather, anions have a special nomenclature. If the anion represents, as was the case here...
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Ion Exchange
Encyclopedia entry from: The Gale Encyclopedia of Science
...dissolved sodium chloride and a strong anion resin in the hydroxide (basic) form yields...Complete exchange of solution ions (cation or anion) — that is, complete absorption...species, cations on a cation resin, and anions on an anion
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