error-correcting code
error-correcting code A
code that is designed for
channel coding, i.e. for encoding information so that a decoder can correct, with a high probability of success, any errors caused in the signal by an intervening noisy channel.
Error-correcting codes may be
block codes or
convolutional codes, and in either case are employed in a
forward error-correction system. The most common error-correcting block codes are the
Hamming codes,
Bose–Chaudhuri–Hocquenghem (BCH) codes,
Reed-Solomon (RS) codes,
simplex codes, and the
Golay (23, 12) code.
Since errors may be corrected by detecting them and requesting retransmission, the process of error correction is sometimes taken to include
backward error-correction systems and, hence,
error-detecting codes.
See also
Shannon's model,
coding theory,
coding bounds.
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The Effect of Chelating Agents on Soil Sodicity
Magazine article from: Soil & Sediment Contamination; 1/1/2007; ; 700+ words
; ...the soil's SAR. Chelating Agents Chelating agents form stable complexes...structure of the agent (Ayres, 1968...Martell, 1959). The chelating agent diethylenetriamine...used as sequestering agents to remove toxic metals...
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Chelating agent for multi-component compound fertilizers.(Brief Article)
Magazine article from: China Chemical Reporter; 6/6/2005; 700+ words
; ...technology for such trace element additive is a new chelating agent. It can conduct the chelating of various trace elements into water soluble...component compound fertilizers produced with this chelating agent have good solubility and strong activity...
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The zinc-chelating agent disulfiram may have anticancer applications.
Newspaper article from: Angiogenesis Weekly; 12/12/2003; 700+ words
; ...NewsRx.net) -- The zinc-chelating agent disulfiram may have anticancer...proteolytic activity through a zinc-chelating mechanism. Addition of zinc could...invasion and angiogenesis by zinc-chelating agent disulfiram. Mol Pharmacol...
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Chelating Agents
Magazine article from: Chemical Market Reporter; 4/27/1998; ; 689 words
; ...aminopolycarboxylate chelating agents is estimated at 300...the most widely used chelating agent in many applications...will hold on to the chelating assets Hampshire's...Dow must manufacture agents fur Akzo until the Lima...
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Identify the Key and Niche Companies Operating in the Worlds Chelating Agents Industry.
M2 Presswire; 3/30/2007; 700+ words
; ...Companies Operating in the Worlds Chelating Agents Industry.(C)1994-2007 M2...has announced the addition of Chelating Agents - Global Strategic Business...analyzes the worldwide markets for Chelating Agents in Metric Tons. The specific...
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Once-daily drinkable chelating agent.(New drug information from the publishers of MPR)
Magazine article from: Clinical Advisor; 1/1/2006; 700+ words
; Drug: Exjade Company: Novartis Pharmacologic class: Iron-chelating agent Active ingredient: Deferasirox 125 mg, 250 mg, 500 mg; tabs for oral susp. Indication: Chronic iron overload due to blood...
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Desferal may alleviate Alzheimer's. (Ciba-Geigy Corp.'s chelating agent may slow mental deterioration associated with Alzheimer's disease)(RX: Mass Market Retail Pharmacy)
Magazine article from: Chain Drug Review; 6/17/1991; 697 words
; ...apparently collects in excessive amounts in the brains of Alzheimer's patients. The drug was studied because it is a chelating agent: it draws metals, including aluminum, out of human tissue. The Toronto research is believed to be the first to...
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New Bifunctional Chelating Agents for Radioimmunotherapy with Radiometals.
Newspaper article from: Immunotherapy Weekly; 6/14/1999; 700+ words
; ...Cancer) "New Bifunctional Chelating Agents for Radioimmunotherapy with Radiometals...is to develop new bifunctional chelating agents (BCAs) for the radiolabeling...better radioimmunotherapeutic agent for treatment of human malignancies...
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Akzo Nobel.(investments in chelating agents production plants)(Brief article)
Magazine article from: Chemistry and Industry; 5/7/2007; ; 699 words
; ...plants for the production of ethylene amines and chelating agents to be built on the company's new multisite in the Ningbo Chemical Industry Zone, China. The chelating agents facility is scheduled for start-up in 2009, followed...
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Dow Chemical Selects ChemPoint.com to Distribute VERSENE(TM) CA Chelating Agents; Continues to Expand Relationship with ChemPoint.
Business Wire; 5/4/2006; 700+ words
; ...as the exclusive distributor for VERSENE(TM) CA chelating agents in the United States. Effective May 1, 2006, VERSENE...Kevin Lewis, Americas Marketing Manager for VERSENE chelating agents, The Dow Chemical Company. "We recognize that...
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chelating agents
Book article from: The Columbia Encyclopedia, Sixth Edition
...compounds are called chelating agents. The compound formed by a chelating agent and a metal is called...with a complex chelating agent; heme, part of the...is an iron chelate. Chelating agents are important in textile...
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chelating agent
Book article from: A Dictionary of Nursing
chelating agent (kee- layt -ing) n. a chemical compound that forms complexes by binding metal ions. Some chelating agents, including desferrioxamine and penicillamine, are drugs used to treat metal poisoning: the metal is bound to the drug and excreted safely.
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ligand
Book article from: The Columbia Encyclopedia, Sixth Edition
...electrons, are called chelates (see chelating agents ). Ethylenediamine-tetraacetate, a commonly used chelating compound, has six pairs of electrons...nitrogen-containing) groups act as chelating agents; these groups fix the metal...
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Heavy Metal Poisoning
Encyclopedia entry from: Gale Encyclopedia of Children's Health: Infancy through Adolescence
...poisoning is chelation therapy. A chelating agent specific to the metal involved...intravenously. The three most common chelating agents are calcium disodium edetate...and penicillamine. The chelating agent encircles and binds to the metal...
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Cadmium Poisoning
Encyclopedia entry from: Gale Encyclopedia of Alternative Medicine
...literature on the subject is scarce. Addition of a chelating agent, particularly ethylenediamine tetraacetic acid...dialysis, dimercaptosuccinic acid (DMSA) (an oral chelating agent), has been recommended for removal of cadmium from...
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