Results 21 to 30 of about 521,158 (314)

Internal standard versus external standard calibration: an uncertainty case study of a liquid chromatography analysis

open access: yesQuímica Nova, 2010
Traditionally, in the cigarettes industry, the determination of ammonium ion in the mainstream smoke is performed by ion chromatography. This work studies this determination and compares the results of this technique with the use of external and internal
Elcio Cruz de Oliveira   +4 more
doaj   +1 more source

LRCFS/lrcfs-measurement-uncertainty-calculator: Homogeneity Uncertainty/Test

open access: yes, 2021
The Leverhulme Research Centre for Forensic Science Measurement Uncertainty Calculator (MUCalc) is an application for calculating measurement uncertainty in accordance with the standards of International Organization for Standardization ISO/IEC 17025 ...
Joyce Klu, Roy Mudie, Niamh Nic Daeid
core   +1 more source

A probabilistic uncertainty evaluation method for turbomachinery probe measurements [PDF]

open access: yesE3S Web of Conferences, 2022
The paper presents a probabilistic uncertainty evaluation method described in the Guide to the Expression of Uncertainty in Measurement (GUM) [1] and its application to the field of Turbomachinery probe measurement techniques.
Behr Thomas   +2 more
doaj   +1 more source

Technological Uncertainty and Standardization Strategies: A Coopetition Framework [PDF]

open access: yesIEEE Transactions on Engineering Management
Standards may be arrived at through various coordination mechanisms, including cooperation, coopetition, or competition. This article explores how technological uncertainty affects the coordination mechanism for standardization. The article is based on the Community Innovation Survey, a sizeable firm-level survey representative of the Luxembourgish ...
Cesare A. F. Riillo   +4 more
openaire   +5 more sources

Uncertainty Analysis of Activity Concentration Measurement of Tritium Gas Standard Source

open access: yesJournal of Isotopes, 2023
The value of activity concentration of tritium standard source is very important for the monitor and calibration of tritium. The length compensation method is applied for measuring activity of tritium.
LUO Rui;LIU Yuntao;LIN Min;XU Lijun;MAO Naqing;LI Ming
doaj   +1 more source

Standard and nonstandard representability of positive uncertainty orderings [PDF]

open access: yesKybernetika, 2014
Summary: Axioms are given for positive comparative probabilities and plausibilities defined either on Boolean algebras or on arbitrary sets of events. These axioms allow to characterize binary relations representable by either standard or nonstandard measures (i.e., taking values either on the real field or on a hyperreal field).
Andrea Capotorti   +2 more
openaire   +3 more sources

Sensitivities of a Standard Test Method for the Determination of the pHe of Bioethanol and Suggestions for Improvement

open access: yesSensors, 2010
An assessment of the sensitivities of the critical parameters in the ASTM D6423 documentary standard method for the measurement of pHe in (bio)ethanol has been undertaken.
Paul J. Brewer   +2 more
doaj   +1 more source

Simulated measurement-uncertainty determination for mass-standard calibration via transfer artefacts

open access: yesMeasurement: Sensors, 2021
Monte Carlo methods are appropriate for determining manufacturing accuracy or measurement uncertainty for the calibration of mass standards such as sorption, duplex and buoyancy artefacts, which are referred to as transfer artefacts.
Frank Härtig   +2 more
doaj   +1 more source

Uncertainty Estimation for Quantitative Agarose Gel Electrophoresis of Nucleic Acids

open access: yesSensors, 2023
This paper considers the evaluation of uncertainty of quantitative gel electrophoresis. To date, such uncertainty estimation presented in the literature are based on the multiple measurements performed for assessing the intra- and interlaboratory ...
Konstantin Semenov   +6 more
doaj   +1 more source

Measurement uncertainty contribution in the quantisation of measurement values : Expert Report DKD-E 13-1

open access: yes, 2020
This report deals with the estimation of the measurement uncertainty contribution by way of quantisation for digitally indicating measuring instruments.
Members of the Technical Committee Measurement Uncertainty of the DKD
core   +1 more source

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