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Calibration

Calibration refers to the process of determining the relation between the output of a measuring instrument and the value of the input quantity or attribute, a measurement standard. In non-specialized use, calibration is often regarded as including the process of adjusting the output or indication on a measurement instrument to agree with value of the applied standard, within a specified accuracy. For example, a thermometer could be calibrated so the error of indication or the correction is determined, and adjusted so that it shows the true temperature in Celsius at specific points on the scale. Calibration also can refer to judgments made by a prognosticator. For example, if a weather forecaster is properly calibrated, it will rain on 80% of the days on which she says "there is an 80% chance of rain today".In many countries a National Metrology Institute will exist which will maintain primary standards of measurement which will be used to provide traceability to customer's instruments by calibration. The NMI supports the metrological infrastructure in that country by establishing an unbroken chain, from the top level of standards to an instrument used for measurement. Examples of National Metrology Institutes are NPL in the UK, NIST in the United States, PTB in Germany and many others. Since the Mutual Recognition Agreement was signed it is now straightforward to take traceability from any participating NMI and it is no longer necessary for a company to obtain traceability for measurements from the NMI of the country in which it is situated.See [http://www.bipm.org/en/cipm-mra/] for more information on the Mutual Recognition Agreement.See [http://www.bipm.org/] for the international metrology frameworkFor a calibration to be of any value it must be accompanied by a traceable uncertainty statement to an stated confidence level. This is evaluated through careful uncertainty analysis.In computing, an interactive whiteboard pen or other input method can be calibrated so that relation between the physical pen position and the position of the cursor on the screen is established and properly adjusted. (From the Wikpedia article Calibration.)

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Recent Publications on Calibration:

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Influence of iron chelation on R1 and R2 calibration curves in gerbil liver and heart.
MRI is gaining increasing importance for the noninvasive quantification of...
27th June, 2008
Division of Pediatric Cardiology, Children's Hospital Los Angeles, Magn Reson Med. 2008 Jun 25;60(1):82-89.
DOI Direct Link
Fast and optimized T(1) mapping technique for the noninvasive quantification of gastric secretion.
PURPOSE: To evaluate the noninvasive quantification of gastric secretion...
27th June, 2008
Institute for Biomedical Engineering, University and ETH Zurich, J Magn Reson Imaging. 2008 Jun 25;28(1):96-102.
DOI Direct Link
Quantitative brain proton MR spectroscopy based on measurement of the relaxation time T(1) of water.
PURPOSE: To provide a straightforward method for metabolite quantitation...
27th June, 2008
Institute of Diagnostic Radiology and Radiation Oncology, University of J Magn Reson Imaging. 2008 Jun 25;28(1):34-38.
DOI Direct Link
Improved slice selection for R2* mapping during cryoablation with eddy current compensation.
PURPOSE: To improve the slice profile and image quality of R2* mapping in...
27th June, 2008
Department of Radiology, Stanford University, Stanford, California. J Magn Reson Imaging. 2008 Jun 25;28(1):190-198.
DOI Direct Link
Camera-based detection and removal of shadows from interactive multiprojector displays.
Front-projection displays are a cost-effective and increasingly popular...
27th June, 2008
Department of Computer Science, University of Kentucky, Lexington, KY IEEE Trans Vis Comput Graph. 2004 May-Jun;10(3):290-301.
DOI Direct Link

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BioNews Results for Calibration:

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40-m Tightly Calibrated Embozene Color-Advanced Microspheres
Endovascular Today:  Jun 20 2008 5:39PM Matching: calibration
Dabur OnQuest hopes to get CAP accreditation next year
Economictimes:  Jun 10 2008 3:24PM Matching: calibration
Pharmaceuticals: Analytical & Bioscience Solutions Update
Bioresearch Online:  Jun 3 2008 5:22PM Matching: calibration
Drug testing lab at Baroda gets NABL accreditation
PharmaBiz:  Jun 3 2008 3:06AM Matching: calibration
Drug testing lab of Maharashtra FDA to get NABL accreditation soon
PharmaBiz:  May 23 2008 5:30AM Matching: calibration
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Calibration Clinical Trials:

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Calibration of Urine pH Strips for NCI Case-Control Studies on Bladder Cancer and Comparison of DNA Yields From Buccal Cells Collected Through Two Different Methods
Effect of the Fat Content of the Bedtime Snack on Overnight Hypoglycemia
Diabetes Mellitus, Type I
A Novel Acuity Testing Method
Vision Disorder
HMP (Home Macular Perimeter) -Usability Trial
Age Related Macular Degeneration
A Protocol for the Use of Chlorhexidine Gluconate Saturation for the Reduction of Dental Biofilm Formation on Polymethylmethacrylate Restoration
Dental Plaque

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Calibration Patents:

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US Patent No.Title
7391687 Method of determining recording power for recordable optical disk in optical disk system
7391942 Long period grating sensor methods and apparatus
7391948 Optical waveguide structure
7391973 Two-stage gain equalizer
7391975 Method of synchronizing servo timing in an optical wireless link

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Companies working in the area of Calibration from Bioportfolio's Biocorporate database :

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Company Name

AccuTek Laboratories

Welcome to AccuTek Laboratories, home of comprehensive pipette calibration and pipette repair services as well as best prices on AccuPet, ePet, refurbished Pipetman and Eppendorf at closeout...
www.accuteklab.com/        View full profile
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APD Dynamics Incorporated

APS DYNAMICS, INC. based in Carlsbad, California specializes in designing, manufacturing and marketing vibration systems for modal test excitation, low frequency calibration and component test....
www.apsdynamics.com/        View full profile
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Compliance Technology Group

Compliance Technology Group, Inc., is a full service consulting firm specializing in Engineering, Calibration and Validation Services for cGMP/cGLP facilites. Professional staff have had over 135...
www.compliancetechgroup.com/        View full profile
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BioPortfolio Ltd. offers e-mail and postal lists for Calibration scientists - we have details of around 3430 individuals working on Calibration .


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Wikipedia excerpt, where present, licenced under the GNU Free Documentation License. Resources from the NCBI applied. Selected MeSH subject headings created and maintained by the US NLM are used in conjunction with additional keywords. 2006-2008 MeSH.
 

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