Results 161 to 170 of about 80,246 (200)
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Traceability in radionuclide metrology

Nuclear Instruments and Methods in Physics Research, 1984
Abstract The concept of traceability is developed in the general context of national and international measurement systems. The distinction is drawn between measurement standards and specification standards, and reference is made to legal aspects of metrology.
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A traceability scheme for materials metrology

Metrologia, 2010
A schematic traceability chain is proposed similar to the traceability scheme in chemical measurements, in which calibration hierarchy is established by consecutive sets of three components, namely measurement standard, measurement system and measurement procedure.
Jose Antonio Salas-Tellez   +3 more
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Metrological Traceability and Measurement Uncertainty

2020
This chapter reviews the history of measurement science, providing the foundation for the international system of measurement in place today. Information is provided on the most common paths to establish metrological traceability of forensic toxicology quantitative test results and for a general framework to evaluate the measurement uncertainty of any ...
Laurel Farrell, Tate Yeatman
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Metrological Traceability

2007
The ability to trace a measurement result to a reference value lies at the heart of any measurement. Traceability is part of standards governing laboratory practice, such as ISO/IEC 17025 and Good Laboratory Practice (see chapter 9), as a mandatory property of a measurement result, yet as a concept, traceability of a chemical measurement result is ...
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Metrological traceability: A global perspective

New Frontiers for Metrology: From Biology and Chemistry to Quantum and Data Science, 2021
The principle of metrological traceability is foundational to the modern system of measurement. The concept of relating a measurement result to a reference through an unbroken chain of calibrations, each contributing to the measurement uncertainty allows us to achieve the quality of measurements that underpins our modern world.
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Mathematical modelling of metrological traceability chains

Ukrainian Metrological Journal, 2023
Metrological traceability is a property of the measurement result and requires an established multi-level calibration hierarchy. The metrological traceability chain is established through the calibration hierarchy and is used to establish the metrological traceability of the measurement result.
Oleh Velychko, Tetyana Gordiyenko
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Standardization in clinical enzymology: a challenge for the theory of metrological traceability

cclm, 2010
Abstract The goal of standardization for measurement of the catalytic concentration of enzymes is to achieve comparable results in human samples, independent of the reagent kits, instruments, and laboratory where the assay is performed. To pursue this objective, the IFCC has established reference systems for the most important clinical ...
I. Infusino   +3 more
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Metrological Traceability of Coordinate-Time Measurements

Measurement Techniques, 2013
Basic provisions for the unity of measurements in the area of coordinate-time measurements intended for construction of a national system based on advances in astrometry and the accepted international celestial and terrestrial coordinate systems are discussed.
A. S. Doynikov   +2 more
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THE TRACEABILITY CHAIN IN METROLOGY: A statistical application in metrology

Journal of Engineering Research, 2022
Enrique Villa-Diharce   +1 more
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Metrological traceability is not always a straight line

Accreditation and Quality Assurance, 2009
The two most important concepts in metrology are certainly “traceability to standards” and “measurement uncertainty evaluation”. So far the questions related to these concepts have been reasonably solved in the metrology of “classical quantities”, but for the introduction of metrological concepts in new fields, such as chemistry and biology, a lot of ...
Marc Priel   +2 more
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